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EP0382652A1 - Stringing apparatus for a tennis racket - Google Patents

Stringing apparatus for a tennis racket Download PDF

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Publication number
EP0382652A1
EP0382652A1 EP90420037A EP90420037A EP0382652A1 EP 0382652 A1 EP0382652 A1 EP 0382652A1 EP 90420037 A EP90420037 A EP 90420037A EP 90420037 A EP90420037 A EP 90420037A EP 0382652 A1 EP0382652 A1 EP 0382652A1
Authority
EP
European Patent Office
Prior art keywords
cradle
frame
stringing
racket
clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90420037A
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German (de)
French (fr)
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EP0382652B1 (en
Inventor
Gérard Longeat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babolat VS SA
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Babolat VS SA
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Filing date
Publication date
Application filed by Babolat VS SA filed Critical Babolat VS SA
Publication of EP0382652A1 publication Critical patent/EP0382652A1/en
Application granted granted Critical
Publication of EP0382652B1 publication Critical patent/EP0382652B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings
    • A63B51/14—Arrangements for stringing, e.g. for controlling the tension of the strings during stringing

Definitions

  • the present invention relates to an apparatus, device or machine for stringing a tennis racket.
  • Such a machine has the following drawbacks.
  • a stringing apparatus comprising: - a rigid support; - A rope cradle, essentially constituted by a beam, mounted in rotation on the support, adjustable in angular position by the operator, relative to the support; - A rigid but removable means of attachment of the racket frame on the string cradle; this means disposed on the cradle comprises two frame fixing members, mounted opposite, adjustable in translation on the beam; each fixing member comprises a bracket and a flat pressing means mounted on the head of the bracket; the two pressing means face each other and allow the heart and the head of the racket frame to be tightened respectively; a first pressing means consists of a fixed bearing and an adjustable stop with nut; - the lateral means or stops, from the outside, of the frame of the racket to be strung; these means consist in adding to one of the fixing members, two arms extending parallel to the rope cradle, symmetrically with respect to the beam forming the rope cradle;
  • Such a device has the following drawback:
  • the lateral stops described above do not provide any rigid attachment to the frame of the racket, capable of counteracting local deformations of the frame under the effect of the tension exerted on the stringing wire. These stops can only limit the transverse displacement towards the outside of the frame, and nothing more.
  • the shapes, geometries and thicknesses of the frame which vary from one racket to another, have the consequence that the level or the height of the horizontal stringing plane, that is to say the sieve of the racket strung or to be tied, relative to the cradle of rope or to the rigid support, varies from one racket to another. Consequently, the level of the wire pulling head, or diabolo, varies significantly compared to the stringing plane, from one racket to another.
  • the impossibility of controlling the level or height of the stringing plane means that one cannot control the tension actually exerted on the stringing thread, taking into account the existence of a variable vertical component of the tension.
  • the subject of the present invention is a stringing apparatus which principally allows effective control of the height or level of the stringing plane, whatever the rackets.
  • the invention relates to a stringing apparatus allowing both an effective and relatively complete clamping of the frame of the racket, and an ease of use for the operator.
  • a reference plane is defined, said stringing plane, situated at a predetermined level or height, in particular relative to the fixed support.
  • the specific means or characterizing the present invention are organized with respect to this reference plane, in the following manner: - On the one hand, thanks to means for controlling the movement of the clamping jaws, the latter are movable only in the reference plane, between a separated position releasing the frame, and a close position clamping the latter; - And secondly, each jaw includes means for self-positioning of the racket frame, under the effect of the displacement of at least one clamping jaw from the separated position to the close position, to bring the plane racket sieve in the reference string plane.
  • a preferred embodiment of the invention relates to an apparatus traditionally comprising two frame fixing members, arranged opposite on the cradle of rope, and each comprising a bracket.
  • at least two jaws of clamping are secured respectively to two arms, forming clamping members of the racket frame; these arms extend above the rope cradle, and are each mounted on the head of a bracket, in an adjustable manner, and preferably together, between a separated position releasing the frame and a close position clamping the latter.
  • the invention thus makes it possible to fix in space the frame of the racket, in the manner of a vice, relative to a reference plane in which the stringing will be carried out.
  • a preferred embodiment of the invention consists in providing a pulling head for the stringing wire, distinct from the rest of the tension member, and movable in height compared to the latter. And control means make it possible to place the traction head, on one side in the low position, retracted relative to the handle of the racket, when the angular position of the cradle is located within a reference angle, corresponding at the passage of the handle on the side of the tensioning member, and on the other side in the high position, coinciding for the cordage to be pulled with the reference stringing plane, and this when the angular position of the cradle is at outside the above-mentioned reference angle.
  • one or more pliers for tightening the cord each movable in position in the plane of the cord or the screen, and each orientable around 'a pivot axis perpendicular to the sieve.
  • these clamps comprise, still in known manner, two jaws facing each other with an upper edge in the form of a comb, and means for bringing the two jaws closer or further apart from one another.
  • each clamp is movable in the stringing plane along two axes of articulation, linked together but distinct, perpendicular to the stringing plane, namely: a first axis, fixed in rotation relative to the rope cradle, around which a satellite arm is mounted in rotation, parallel to the cradle, - And a second axis, fixed in rotation relative to the satellite arm, around which a gripper arm is mounted in rotation, parallel to the cradle.
  • Locking means are further provided for simultaneously locking in position, and the satellite arm with respect to the cradle, and the gripper arm with respect to the satellite arm.
  • an apparatus comprises the following essential organs or elements: - A rigid support 1, which can be placed on any flat and horizontal surface, or on a height-adjustable base or base; this support has for example a rectangular shape. - A cradle 2 of rope, rotatably mounted on the support 1, and adjustable in angular position relative to the latter. - Two bodies 3 and 4 for fixing the frame of the tennis racket, arranged and fixed on the cradle 2, facing each other along the axis of the frame. - two clamps 6 and 7 of the stringing wire, mounted movably on the stringing cradle 2. - A tension member 8 of the cord wire, secured to the support 1, comprising a traction head 9 of the same wire. a housing 10, placed on either side of the tensioning member 8 of the cordage wire, comprising a control keyboard 11 directed towards the operator, and enabling him to accomplish the various maneuvers required by the stringing of racket.
  • the rope cradle 2 has a planar shape, and is mounted in rotation about an axis 12, perpendicular to the support 1. More specifically, the cradle 2 comprises an upper plate 13 and a plate lower 14, arranged at a distance from the plate 13, and connected to the latter by an oblique edge 14a.
  • the cradle 2 is integral with a co-axial hub 15, journalled in a cylindrical housing 16, also co-axial, belonging to support 1.
  • the two fixing members 3 and 4 ensure the clamping in a horizontal position of the tennis racket 17 to be strung, shown in broken lines in Figures 2 and 3, and comprising a frame 17a and a handle 17b.
  • the two members 3 and 4 come out arranged in exactly the same way so that it suffices to describe only one, for example the fixing member 3.
  • the members 3 and 4 are arranged and rigidly mounted on the cradle 2, facing each other along the longitudinal axis 18 of the latter, corresponding to the axis of symmetry of your racket 17.
  • the fixing member 3 comprises a bracket 19, directed perpendicularly to the cradle 2, two clamping arms of the frame, extending substantially parallel to the cradle 2, symmetrically with respect to the axis 18 of alignment of the fixing members 3 and 4.
  • the general shape of these arms 20, seen from above (see FIG. 3) is in correspondence with the rounded profile of the frame 17a.
  • the two arms 20 are each articulated on the head 19a of the stem 19, in an adjustable manner and together, between a separated position shown in FIG. 5, releasing the frame 17a from the racket, and a close-up position represented in FIG. and blocking this same frame 17a, in the direction of the arrows represented in FIG. 5.
  • a slide 21 is mounted in the head 19a of the bracket, and is movable in translation in the vertical plane 22 of alignment of the fixing members 3 and 4; this slide 21 has two grooves 21a and 21b, aligned, directed perpendicular to the vertical plane 22 above.
  • Two axes 23 of articulation of the two arms 20 respectively are directed perpendicular to the rope cradle 2, and downwards; these two axes are journalled on the head 19a of the bracket 19, on either side of the cylindrical orifice 19b ensuring the sliding of the slide 21.
  • a member 26 for adjusting the position of the slide 21 in the stem head 19a comprises a knurled knob 27 which can rotate freely relative to the head 19a, and located essentially outside of the stem 19, and a rod 28 threaded, co-axial with the slide 21, cooperating with a homologous thread of a thread 27a provided in the axis of the button softness 27.
  • each clamping arm 20 comprises a clamping jaw 25, directed and open towards the frame 17a of the racket, and more particularly shown in FIG. 4.
  • Each of these jaws, of flattened shape, is directed so substantially perpendicular to the frame 17a of the racket.
  • the opening 25a of each jaw 25 has a divergent transverse profile, V-shaped, symmetrical with respect to the reference plane 29 which will be discussed below.
  • the internal wall of each jaw 25, and more precisely of the opening 25a is covered with a molded lining 30, of plastic material, so as to promote the limited displacement of the frame 17a, without damaging it, when the arms of clamping 20 are brought towards the racket 17, in the direction of the arrows shown in Figure 5.
  • the two oblique edges, or jaws of the opening 25a of each jaw 25, clear between them a passage or slot 25b, extending behind the opening 25a, and allowing the passage of the cordage wire.
  • the two arms 20 of the first fixing member 3 are directed towards the two arms 20 respectively of the second fixing member 4, so as to embrace the frame 17a of the racket.
  • the four corresponding jaws 25 extend in height, symmetrically on either side of the reference stringing plane 29.
  • the frame 17a During the movement of the jaws 25, from the outside towards the inside of the cradle 2, the frame 17a, whatever its geometry, its size or its thickness, is centered in the reference plane of rope 29; this is shown in particular in Figure 4, or there are shown two frames 17a of different thickness and dimensions.
  • the reference stringing plane corresponding to that of the future sieve of the racket 17, and determined by the clamping jaws, is located above the heads 19a of the fixing brackets 19.
  • each of them comprises a hook 31, or billiard, allowing the frame 17a of the racket to be held in abutment, and completing the action of fixing the jaws 25.
  • a first knurled button 27 comprises two parts 271 and 272, integral in rotation with one another; the first 271 is located outside of the head 19a, and can be manipulated by the operator; the second 272 is mounted free in rotation on a ring inserted on the head 19a, and stopped in translation by a washer 71; it is this part 272 which comprises the thread 27a cooperating with the hollow threaded rod 28 integral with the slide; a second knurled button 72 is mounted to rotate freely on the first button 27, and more precisely the part 271, by virtue of a stop ring 73, and an annular ball bearing 74 between the parts 72 and 272; - the barrel 72a of the knurled button 72 has an internal thread cooperating with the threaded end 31a of the straight rod 31 of the billiard
  • each billiard table can be brought by the operator into abutment against the frame, and makes it possible to avoid any significant longitudinal displacement of the latter during the stringing.
  • the two clamps 6 and 7 of the cordage wire each comprise two jaws facing each other, of which only one 32a has been shown in FIG. 6, the upper edge 32a of the same jaw affecting the shape d 'a comb, to allow the passage of the transverse son of the sieve.
  • the two clamps 6 or 7 means not shown are provided for bringing the two jaws 32 together and away from them.
  • the two clamps 6 and 7 can all at the same time be moved in the stringing plane, and oriented around their own pivot axis 33, perpendicular to the cradle 2, or to the stringing plane cited above.
  • the two clamps 6 and 7 are arranged relative to the cradle 2, in exactly the same way, so that only the description of the arrangement of the clamp 6 is sufficient, in accordance with FIGS. 6 and 7.
  • the collet 6 is movable in the abovementioned stringing plane, along two articulation axes 12 and 34, linked but distinct, and both perpendicular to the same stringing plane.
  • a satellite arm 35 is rotatably mounted, parallel to the cradle 2.
  • a support arm -clamps 36 is rotatably mounted, always parallel to the cradle 2.
  • This clamp-carrying arm supports a vertical barrel 37, within which is disposed the axis 33 of the clamp 6.
  • the upper plate 13 of the cradle 2 has a light 13a circular, centered on the first axis of rotation 12.
  • the satellite arm 35 is located below the plate 13, and the gripper arm 36 above this same plate, the second articulation axis 34 freely passing through the light circular 13a.
  • means are provided for simultaneous locking in position, described below, and of the satellite arm 35 relative to the cradle 2, and of the clamp-carrying arm 36 relative to the satellite arm 35.
  • the means described above therefore allow, on the one hand, to block in rotation the satellite arm 35 relative to the plate 13, and therefore in the cradle 2, and on the other hand, to block in rotation the clamp-carrying arm 36, relative to the satellite arm 35.
  • the traction head 9 of the cordage wire is distinct from the rest of the tension member 8, and is articulated on the member 8, around a horizontal axis 47.
  • This head 9 comprises in a manner known per se, on the one hand, a roller 48, or diabolo, used for winding the cording wire, and on the other hand, jaws for clamping the same wire, not shown.
  • the traction head 9 By pivoting about the axis 47, the traction head 9 is movable in height, relative to the member 8, between a low position (confer Figure 9), retracted relative to the handle 17b of the racket, and a position high (see Figure 10), coinciding for the string to be pulled, or the upper tangent plane of the diabolo 48, with the reference string plane 29, described and defined above.
  • the control means described below the retracted position according to FIG. 9 is obtained when the angular position of the cradle 2, materialized by the angular position of the handle 17b, is located inside a reference angle 49, corresponding to the passage of the handle 17b on the side of the tension member 8.
  • the high position according to FIG. 10 is obtained when the angular position of the cradle 2 is outside the reference angle 49.
  • the drive head control means 9 is arranged as follows.
  • the tension member 8 comprises a column 50 on the head of which is articulated the traction head 9.
  • a control rod 51 slides in the column 50, and is supported by its upper end 51a with the traction head 9.
  • a cam 52 is rotatably mounted on the base of the column 50 , and is in contact with the lower end 51b of the rod 51.
  • An electric motor 53 rotates the cam 52.
  • the rotational travel of the cam 52 is limited to half a turn, thanks to a finger 54, integral in rotation of the aforementioned cam and located outside the member 8, cooperating with two limit switches 55.
  • the electric motor 53 for controlling the cam 52 is activated or deactivated, depending on whether a specific contactor present on the periphery of the cradle 2 is switched on or off by any of the above-mentioned bosses.
  • the tension member 8 As for the tension member 8, it slides on a ball slide 56, and is driven towards the rear of the device, by a motorized pinion and a chain, not shown.

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  • Health & Medical Sciences (AREA)
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  • Physical Education & Sports Medicine (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Electric Cable Installation (AREA)
  • Chain Conveyers (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
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  • Supports For Plants (AREA)
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Abstract

Apparatus for stringing a tennis racquet (17), comprising: - a support (1> - a stringing cradle (2), mounted rotatably on the support, which can be adjusted in respect of angular position relative to the latter - a rigid but removable means (3, 4) for fixing the frame (17a) of the racquet onto the stringing cradle, arranged on the latter, comprising at least two clamping jaws (25), each directed and open (25a) towards the frame (17a) of the racquet - an element (8) for tensioning the stringing thread, integral with the support, comprising a traction head (9), characterised in that, on the one hand, by virtue of means (27) for controlling the clamping jaws (25) in terms of displacement, the latter are movable only in a stringing reference plane between a separated position releasing the frame and a close-together position clamping the latter, and, on the other hand, each jaw comprises means for self-positioning the frame of the racquet, through the effect of the displacement of at least one clamping jaw from the separated position to the close-together position, in order to bring the plane of the string section of the racquet into the reference stringing plane. <IMAGE>

Description

La présente invention concerne un appareil, dispositif ou machine, permettant de corder une raquette de tennis .The present invention relates to an apparatus, device or machine for stringing a tennis racket.

Conformément au certificat d'addition français 43577, on a décrit un tel appareil comprenant :
- un support ;
- un berceau de cordage , ayant la forme d'un cadre de raquette, monté à rotation sur le support, réglable au position angulaire par rapport au support ; ce berceau comporte du côté extérieur, et sur son pourtour, une pluralité de consoles pourvues chacune de plusieurs rainures de réglage perpendiculaires, c'est à dire dirigées vers le centre du cadre ;
- un moyen de fixation rigide mais amovible du cadre de la raquette sur le berceau de cordage, comprenant une pluralité d'organes de fixation indépendants, pouvant être rapportés en vis à vis, de matière amovible et réglable sur les différentes consoles du berceau, grâce à des tiges filetées avec écrous à ailettes appartenant aux dits organes respec­tivement ; chaque organe de fixation comporte une machoire de serrage, dirigée et ouverte vers le cadre de la raquette, comportant deux mors parallèles, déplaçables ensemble l'un par rapport à l'autre, en rapprochement ou éloignement grâce à un mécanisme de commande manuelle avec pignon et vis ; la machoire de serrage est complétée sur son bord extérieur par une butée latérale réglable en translation indépendamment des mors.In accordance with French addition certificate 43577, such a device has been described comprising:
- a support ;
- a cradle of rope, in the form of a racket frame, rotatably mounted on the support, adjustable to the angular position relative to the support; this cradle comprises on the outside, and on its periphery, a plurality of consoles each provided with several perpendicular adjustment grooves, that is to say directed towards the center of the frame;
a means of rigid but removable fixing of the frame of the racket on the stringing cradle, comprising a plurality of independent fixing members, which can be attached opposite, of removable and adjustable material on the different consoles of the cradle, thanks to threaded rods with wing nuts belonging to said bodies respectively; each fastener comprises a clamping jaw, directed and open towards the frame of the racket, comprising two parallel jaws, movable together with respect to each other, in approach or in distance thanks to a manual control mechanism with pinion and screws; the clamping jaw is completed on its outer edge by a lateral stop adjustable in translation independently of the jaws.

Une telle machine présente les inconvénients suivants.Such a machine has the following drawbacks.

La mise en place et le retrait d'un même cadre s'effectuent par commande manuelle de la multitude des mécanismes associés aux différents organes de fixation respectivement, puisque chacun comporte au minimum un réglage des mors de la machoire de serrage, et un réglage de la butée latérale.The establishment and removal of the same frame is carried out by manual control of the multitude of mechanisms associated with the various fixing members respectively, since each comprises at least one adjustment of the jaws of the clamping jaw, and one adjustment of the lateral stop.

Pour des cadres différents, il faut en outre démonter tout ou partie des organes de fixation, et les remonter différemment sur les mêmes consoles ou des consoles différentes. Il faut aussi changer les garnitures internes des mors de serrage pour se conformer au cadre de raquette particulier à encorder.For different frames, it is also necessary to dismantle all or part of the fixing members, and reassemble them differently on the same consoles or different consoles. It is also necessary to change the internal linings of the clamping jaws to conform to the particular racket frame to be corded.

Conformément au document US-C-4706955, on a proposé un appa­reil de cordage comprenant : - un support rigide ;
- un berceau de cordage, constitué essentiellement par une poutre, monté en rotation sur le support, réglable en position angulaire par l'opéra­teur, par rapport au support ;
- un moyen de fixation rigide mais amovible du cadre de la raquette sur le berceau de cordage ; ce moyen disposé sur le berceau comporte deux organes de fixation du cadre, montés en vis à vis, réglables en translation sur la poutre ; chaque organe de fixation comprend une potence et un moyen de pressage à plat monté sur la tête de la potence ; les deux moyens de pressage se font face et permettent de serrer le coeur et la tête du cadre de raquette respectivement ; un premir moyen de pressage consiste en une portée fixe et une butée réglable avec écrou ;
- les moyens ou butées latérales, par l'extérieur, du cadre de la raquette à corder ; ces moyens consistent à adjoindre à l'un des organes de fixation, deux bras s'étendant parallèlement au berceau de cordage, symé­triquement par rapport à la poutre formant berceau de cordage ; ces deux bras sont articulés ensemble sur la tête de la potence, de manière réglable, entre une position écartée libérant le cadre, et une position rapprochée venant en butée à l'extérieur du cadre, par des rouleaux amobiles disposés de manière appropriée ;
- un organe de tension du fil de cordage, solidaire du support, situé à distance du berceau de cordage, et comportant une tête de traction du fil .In accordance with document US-C-4706955, a stringing apparatus has been proposed comprising: - a rigid support;
- A rope cradle, essentially constituted by a beam, mounted in rotation on the support, adjustable in angular position by the operator, relative to the support;
- A rigid but removable means of attachment of the racket frame on the string cradle; this means disposed on the cradle comprises two frame fixing members, mounted opposite, adjustable in translation on the beam; each fixing member comprises a bracket and a flat pressing means mounted on the head of the bracket; the two pressing means face each other and allow the heart and the head of the racket frame to be tightened respectively; a first pressing means consists of a fixed bearing and an adjustable stop with nut;
- the lateral means or stops, from the outside, of the frame of the racket to be strung; these means consist in adding to one of the fixing members, two arms extending parallel to the rope cradle, symmetrically with respect to the beam forming the rope cradle; these two arms are articulated together on the head of the bracket, in an adjustable manner, between a separated position releasing the frame, and a close position abutting outside the frame, by movable rollers arranged in an appropriate manner;
- A member for tensioning the cord wire, secured to the support, located at a distance from the cord cradle, and comprising a wire traction head.

Un tel appareil présente l'inconvénient suivant :Such a device has the following drawback:

Le maintien du cadre de la raquette apparait irrégulier, puisque les seuls points ou zones de fixation ferme sont constitués par les moyens de pressage explicités précédemment. A cet égard, les butées latérales décrites précédemment n'assurent aucune fixation rigide du cadre de la raquette, à même de contrecarrer des déformations locales du cadre sous l'effet de la tension excercée sur le fil de cordage. Ces butées ne peuvent que limiter le déplacement transversal vers l'extérieur du cadre, et rien de plus.Maintaining the frame of the racket appears irregular, since the only points or areas of firm attachment are formed by the pressing means explained above. In this regard, the lateral stops described above do not provide any rigid attachment to the frame of the racket, capable of counteracting local deformations of the frame under the effect of the tension exerted on the stringing wire. These stops can only limit the transverse displacement towards the outside of the frame, and nothing more.

Les deux appareils décrits précédemment ont en commun l'incon­vénient principal suivant :The two devices described above have the following main drawback in common:

Les formes, géométries et épaisseurs du cadre, variables d'une raquette à une autre, ont pour conséquence que le niveau ou la hauteur du plan horizontal de cordage, c'est à dire du tamis de la raquette cordée ou à encorder, par rapport au berceau de cordage ou au support rigide, varie d'une raquette à une autre. En conséquence, le niveau de la tête de traction du fil, ou diabolo, varie de manière significative par rapport au plan de cordage, d'une raquette à une autre.The shapes, geometries and thicknesses of the frame, which vary from one racket to another, have the consequence that the level or the height of the horizontal stringing plane, that is to say the sieve of the racket strung or to be tied, relative to the cradle of rope or to the rigid support, varies from one racket to another. Consequently, the level of the wire pulling head, or diabolo, varies significantly compared to the stringing plane, from one racket to another.

Selon le certificat d'addition français 43 577, cette variation existe en raison de l'indépendance des différents organes de fixation, amovibles par rapport au berceau de cordage, et en raison des écarts, tolérances, ou usures différenciées entre les différents organes de fixation.According to the French certificate of addition 43 577, this variation exists due to the independence of the various fixing members, removable with respect to the cradle, and because of the differences, tolerances, or different wear and tear between the different fixing members. .

Selon le document US-C-4706955, cette variation existe en raison de la fixité du plan de support du cadre, déterminé par les deux portées fixes des deux moyens de pressage respectivement, et des variations géométriques des cadres de raguettes posés sur le support.According to document US Pat.

L'impossibilité de contrôler le niveau ou hauteur du plan de cordage a pour conséquence qu'on ne peut maîtriser la tension effectivement exercée sur le fil de cordage, compte tenu de l'existence d'une composante verticale variable de la tension.The impossibility of controlling the level or height of the stringing plane means that one cannot control the tension actually exerted on the stringing thread, taking into account the existence of a variable vertical component of the tension.

La présente invention a pour objet un appareil de cordage permet­tant à titre principal un contrôle effectif de la hauteur ou niveau du plan de cordage, quelles que soient les raquettes. A titre secondaire, l'invention a pour objet un appareil de cordage permettant tout à la fois un bridage effectif et relativement complet du cadre de la raquette, et une facilité d'emploi pour l'opérateur.The subject of the present invention is a stringing apparatus which principally allows effective control of the height or level of the stringing plane, whatever the rackets. On a secondary basis, the invention relates to a stringing apparatus allowing both an effective and relatively complete clamping of the frame of the racket, and an ease of use for the operator.

Selon la présente invention, on définit tout d'abord, par construc­tion, un plan de référence dit plan de cordage, situé à un niveau ou hauteur prédéterminé, notamment par rapport au support fixe. Puis, les moyens spécifiques ou caractérisant la présente invention, sont organisés par rapport à ce plan de référence, de la manière suivante :
- d'une part, grâce à des moyens de commande en déplacement des machoires de serrage, ces dernières sont mobiles uniquement dans le plan de référence, entre une position écartée libérant le cadre, et une position rapprochée serrant ce dernier ;
- et d'autre part, chaque machoire comporte des moyens d'auto-positionnement du cadre de la raquette, sous l'effet du déplacement d'au moins une machoire de serrage de la position écartée à la position rapprochée, pour amener le plan du tamis de la raquette dans le plan de cordage de référence.According to the present invention, first of all, by construction, a reference plane is defined, said stringing plane, situated at a predetermined level or height, in particular relative to the fixed support. Then, the specific means or characterizing the present invention are organized with respect to this reference plane, in the following manner:
- On the one hand, thanks to means for controlling the movement of the clamping jaws, the latter are movable only in the reference plane, between a separated position releasing the frame, and a close position clamping the latter;
- And secondly, each jaw includes means for self-positioning of the racket frame, under the effect of the displacement of at least one clamping jaw from the separated position to the close position, to bring the plane racket sieve in the reference string plane.

Un mode préféré d'exécution de l'invention, mais non exclusif, concerne un appareil comportant de manière traditionnelle deux organes de fixation du cadre, disposés en vis à vis sur le berceau de cordage, et comportant chacun une potence. Selon ce mode, au moins deux machoires de serrage sont solidaires de respectivement deux bras, formant organes de bridage du cadre de la raquette ; ces bras s'étendent au-dessus du berceau de cordage, et sont montés chacun sur la tête d'une potence, de manière réglable, et préférentiellement ensemble, entre une position écartée libérant le cadre et une position rapprochée bridant ce dernier.A preferred embodiment of the invention, but not exclusive, relates to an apparatus traditionally comprising two frame fixing members, arranged opposite on the cradle of rope, and each comprising a bracket. According to this mode, at least two jaws of clamping are secured respectively to two arms, forming clamping members of the racket frame; these arms extend above the rope cradle, and are each mounted on the head of a bracket, in an adjustable manner, and preferably together, between a separated position releasing the frame and a close position clamping the latter.

L'invention permet ainsi de fixer dans l'espace le cadre de la raquette, à la manière d'un étau, par rapport à un plan de référence dans lequel le cordage sera effectué .The invention thus makes it possible to fix in space the frame of the racket, in the manner of a vice, relative to a reference plane in which the stringing will be carried out.

Comme l'invention permet de contrôler le niveau du plan de cordage, un mode préféré d'exécution de l'invention consiste à prévoir une tête de traction du fil de cordage, distincte du reste de l'organe de tension, et mobile en hauteur par rapport à ce dernier. Et des moyens de commande permettent de placer la tête de traction, d'un côté en position basse, escamotée par rapport au manche de la raquette, lorsque la position angulaire du berceau est située à l'intérieur d'un angle de référence, correspondant au passage du manche du côté de l'organe de tension, et de l'autre côté en position haute, coïncidant pour le fil de cordage à tirer avec le plan de cordage de référence, et ce lorsque la position angulaire du berceau est à l'extérieur de l'angle de référence précité.As the invention makes it possible to control the level of the stringing plane, a preferred embodiment of the invention consists in providing a pulling head for the stringing wire, distinct from the rest of the tension member, and movable in height compared to the latter. And control means make it possible to place the traction head, on one side in the low position, retracted relative to the handle of the racket, when the angular position of the cradle is located within a reference angle, corresponding at the passage of the handle on the side of the tensioning member, and on the other side in the high position, coinciding for the cordage to be pulled with the reference stringing plane, and this when the angular position of the cradle is at outside the above-mentioned reference angle.

Cette solution permet de tirer horizontalement le fil de cordage et de supprimer la composante verticale de la tension exercée, sur la majeure partie de la course angulaire du berceau de cordage. On supprime ainsi une partie importante des contraintes néfastes exercées selon l'art antérieur sur les éléments ou organes mécaniques supportant la raquette. On supprime aussi une partie des frottements de la corde au niveau de son guidage dans le cadre, ce qui améliore la précision quant à la valeur réelle de la tension de la corde.This solution allows the cord to be pulled horizontally and the vertical component of the tension exerted to be eliminated over most of the angular travel of the cord cradle. This eliminates a significant part of the harmful stresses exerted according to the prior art on the mechanical elements or members supporting the racket. It also removes part of the friction of the rope at its guide in the frame, which improves the accuracy as to the actual value of the tension of the rope.

Pour terminer, selon une variante d'exécution de l'invention, on utilise de manière connue en soi une ou plusieurs pinces de serrage du fil de cordage, mobiles chacune en position dans le plan de cordage ou du tamis, et orientables chacune autour d'un axe de pivotement perpendiculaire au tamis. Et ces pinces comportent, toujours de manière connue, deux mors en vis à vis avec une bordure supérieure en forme de peigne, et des moyens pour rapprocher ou éloigner les deux mors l'un de l'autre.Finally, according to an alternative embodiment of the invention, in a manner known per se, one or more pliers for tightening the cord, each movable in position in the plane of the cord or the screen, and each orientable around 'a pivot axis perpendicular to the sieve. And these clamps comprise, still in known manner, two jaws facing each other with an upper edge in the form of a comb, and means for bringing the two jaws closer or further apart from one another.

De manière nouvelle, selon l'invention, chaque pince de serrage est mobile dans le plan de cordage selon deux axes d'articulation, liés entre eux mais distincts, perpendiculaires au plan de cordage, à savoir :
- un premier axe, fixe en rotation par rapport au berceau de cordage, autour duquel un bras satellite est monté en rotation, parallèlement au berceau,
- et un deuxième axe, fixe en rotation par rapport au bras satellite, autour duquel un bras porte-pince est monté en rotation, paral­lèlement au berceau.In a new way, according to the invention, each clamp is movable in the stringing plane along two axes of articulation, linked together but distinct, perpendicular to the stringing plane, namely:
a first axis, fixed in rotation relative to the rope cradle, around which a satellite arm is mounted in rotation, parallel to the cradle,
- And a second axis, fixed in rotation relative to the satellite arm, around which a gripper arm is mounted in rotation, parallel to the cradle.

Des moyens de blocage sont en outre prévus pour bloquer simul­tanément en position, et le bras satellite par rapport au berceau, et le bras porte-pinces par rapport au bras satellite.Locking means are further provided for simultaneously locking in position, and the satellite arm with respect to the cradle, and the gripper arm with respect to the satellite arm.

Une telle disposition permet de déplacer très facilement les pinces de serrage dans le plan du tamis, tout en augmentant la plage d'excursion de ces dernières, ce qui permet le cordage de grands comme de petits tamis.Such an arrangement makes it possible to very easily move the clamps in the plane of the screen, while increasing the excursion range of the latter, which allows the stringing of large and small screens.

La présente invention est maintenant décrite par référence aux dessins annexés, dans lesquels:

  • - la Figure 1 représente une vue en perspective d'un dispositif conforme à l'invention.
  • - la Figure 2 représente une vue schématique, de face, du berceau de cordage faisant partie du dispositif représenté à la Figure 1.
  • - la Figure 3 représente une vue de dessus de ce même berceau, toujours de manière schématique.
  • - la Figure 4 représente, de manière schématique et en coupe transversale, une mâchoire faisant partie de l'un quelconque des bras de bridage du cadre de la raquette, représentés par ailleurs aux Figures 2 et 3.
  • - la Figure 5 représente, de manière schématique et en coupe horizontale, un organe de fixation du cadre de la raquette, au niveau de la tête de la potence appartenant audit organe.
  • - la Figure 6 représente une vue schématique, en coupe verticale, du berceau de cordage appartenant à l'appareil selon la Figure 1, ce dessin représentant plus particulièrement la liaison entre le ou les porte-pinces et le berceau de cordage.
  • - la Figure 7 représente une vue de dessus du berceau de cordage, correspondant à la représentation de la Figure 6.
  • - la Figure 8 représente de manière schématique, et en vue de dessus, la relation entre la rotation du berceau de cordage, supportant le cadre de la raquette, d'une part, et l'organe de tension du fil de cordage, et plus précisément la tête de traction de ce dernier, d'autre part.
  • - les Figures 9 et 10 représentent la position de la tête de traction du fil de cordage, respectivement en position basse et en position haute, par rapport au plan horizontal du cadre de la raquette.
  • - la Figure 11 représente en coupe verticale un mode de réali­sation du berceau de cordage représenté par ailleurs schématiquement à la Figure 6 ; de la représentation de cette Figure ont été supprimés les organes de fixation du cadre de la raquette.
  • - la Figure 12 représente, selon la ligne de coupe XII.XII de la Figure 13, un mode de réalisation de l'organe de tension du fil de cordage.
  • - la Figure 13 représente une vue en coupe, selon la ligne XIII.XIII de la Figure 12, du même organe de tension.
  • - la Figure 14 représente, en coupe verticale, un mode d'exécution de l'organe de fixation représenté par ailleurs de manière schématique à la Figure 5. Cette figure fait apparaître les commandes séparées du billard et des bras de bridage respectivement.
The present invention is now described with reference to the accompanying drawings, in which:
  • - Figure 1 shows a perspective view of a device according to the invention.
  • - Figure 2 shows a schematic front view of the rope cradle forming part of the device shown in Figure 1.
  • - Figure 3 shows a top view of the same cradle, still schematically.
  • - Figure 4 shows, schematically and in cross section, a jaw forming part of any one of the clamping arms of the racket frame, represented moreover in Figures 2 and 3.
  • - Figure 5 shows, schematically and in horizontal section, a member for fixing the frame of the racket, at the head of the stem belonging to said member.
  • - Figure 6 shows a schematic view, in vertical section, of the rope cradle belonging to the apparatus according to Figure 1, this drawing representing more particularly the connection between the clamp holder (s) and the cradle of rope.
  • - Figure 7 shows a top view of the rope cradle, corresponding to the representation of Figure 6.
  • - Figure 8 shows schematically, and in top view, the relationship between the rotation of the string cradle, supporting the frame of the racket, on the one hand, and the tensioning member of the string, and more precisely the latter's traction head, on the other hand.
  • - Figures 9 and 10 show the position of the traction head stringing wire, respectively in the low position and in the high position, relative to the horizontal plane of the racket frame.
  • - Figure 11 shows in vertical section an embodiment of the rope cradle also shown schematically in Figure 6; from the representation of this Figure have been removed the fastening members of the racket frame.
  • - Figure 12 shows, along the line of section XII.XII of Figure 13, an embodiment of the tension member of the cordage.
  • - Figure 13 shows a sectional view along line XIII.XIII of Figure 12, of the same tension member.
  • - Figure 14 shows, in vertical section, an embodiment of the fixing member shown also schematically in Figure 5. This figure shows the separate controls for billiards and clamping arms respectively.

Conformément à la Figure 1, un appareil conforme à la présente invention comprend les organes ou éléments essentiels suivants :
- un support 1 rigide, pouvant être posé sur toute surface plane et horizontale, ou sur un pied ou piètement réglable en hauteur ; ce support a par exemple une forme rectangulaire.
- un berceau 2 de cordage, monté à rotation sur le support 1, et réglable en position angulaire par rapport à ce dernier.
- deux organes 3 et 4 de fixation du cadre de la raquette de tennis, disposés et fixés sur le berceau 2, en vis à vis selon l'axe du cadre.
- deux pinces de serrage 6 et 7 du fil de cordage, montées de manière mobile sur le berceau de cordage 2.
- un organe de tension 8 du fil de cordage, solidaire du support 1, comportant une tête de traction 9 du même fil.
- un boîtier 10, disposé de part et d'autre de l'organe de tension 8 du fil de cordage, comportant un clavier 11 de commande dirigé vers l'opérateur, et lui permettant d'accomplir les différentes manoeuvres néces­sitées par le cordage de la raquette.According to Figure 1, an apparatus according to the present invention comprises the following essential organs or elements:
- A rigid support 1, which can be placed on any flat and horizontal surface, or on a height-adjustable base or base; this support has for example a rectangular shape.
- A cradle 2 of rope, rotatably mounted on the support 1, and adjustable in angular position relative to the latter.
- Two bodies 3 and 4 for fixing the frame of the tennis racket, arranged and fixed on the cradle 2, facing each other along the axis of the frame.
- two clamps 6 and 7 of the stringing wire, mounted movably on the stringing cradle 2.
- A tension member 8 of the cord wire, secured to the support 1, comprising a traction head 9 of the same wire.
a housing 10, placed on either side of the tensioning member 8 of the cordage wire, comprising a control keyboard 11 directed towards the operator, and enabling him to accomplish the various maneuvers required by the stringing of racket.

Conformément aux Figures 2,3 et 6, le berceau de cordage 2 a une forme plane, et est monté en rotation autour d'un axe 12, perpendiculaire au support 1. Plus précisément, le berceau 2 comporte un plateau supérieur 13 et un plateau inférieur 14, disposé à distance du plateau 13, et relié à ce dernier par une bordure oblique 14a. Le berceau 2 est solidaire d'un moyeu co-axial 15, tourillonné dans un logement cylindrique 16, co-axial également, appartenant au support 1.In accordance with Figures 2,3 and 6, the rope cradle 2 has a planar shape, and is mounted in rotation about an axis 12, perpendicular to the support 1. More specifically, the cradle 2 comprises an upper plate 13 and a plate lower 14, arranged at a distance from the plate 13, and connected to the latter by an oblique edge 14a. The cradle 2 is integral with a co-axial hub 15, journalled in a cylindrical housing 16, also co-axial, belonging to support 1.

Les deux organes de fixation 3 et 4 assurent le bridage en position horizontale de la raquette de tennis 17 à corder, représentée en traits discontinus aux Figures 2 et 3, et comportant un cadre 17a et un manche 17b. Les deux organes 3 et 4 sort agencés exactement de la même manière de telle sorte qu'il suffit d'en décrire un seulement, par exemple l'organe de fixation 3. Les organes 3 et 4 sont disposés et montés de manière rigide sur le berceau 2, en vis à vis selon l'axe 18 longitudinal de ce dernier, correspondant à l'axe de symétrie de ta raquette 17. L'organe de fixation 3 comprend une potence 19, dirigée perpendiculairement au berceau 2, deux bras de bridage du cadre, s'étendant de manière sensiblement parallèle au berceau 2, symétriquement par rapport à l'axe 18 d'alignement des organes de fixation 3 et 4. La forme générale ces bras 20, vus de dessus (conférer Figure 3) est en correspondance avec le profil arrondi du cadre 17a. Les deux bras 20 sont articulés chacun sur la tête 19a de la potence 19, de manière réglable et ensemble, entre une position écartée représentée à Figure 5, libérant le cadre 17a de la raquette, et une position rapprochée représentée à la Figure 3, fixant et bloquant ce même cadre 17a, dans le sens des flèches représentées par la Figure 5.The two fixing members 3 and 4 ensure the clamping in a horizontal position of the tennis racket 17 to be strung, shown in broken lines in Figures 2 and 3, and comprising a frame 17a and a handle 17b. The two members 3 and 4 come out arranged in exactly the same way so that it suffices to describe only one, for example the fixing member 3. The members 3 and 4 are arranged and rigidly mounted on the cradle 2, facing each other along the longitudinal axis 18 of the latter, corresponding to the axis of symmetry of your racket 17. The fixing member 3 comprises a bracket 19, directed perpendicularly to the cradle 2, two clamping arms of the frame, extending substantially parallel to the cradle 2, symmetrically with respect to the axis 18 of alignment of the fixing members 3 and 4. The general shape of these arms 20, seen from above (see FIG. 3) is in correspondence with the rounded profile of the frame 17a. The two arms 20 are each articulated on the head 19a of the stem 19, in an adjustable manner and together, between a separated position shown in FIG. 5, releasing the frame 17a from the racket, and a close-up position represented in FIG. and blocking this same frame 17a, in the direction of the arrows represented in FIG. 5.

L'articulation réglable et concomitante des bras de bridage 20 est obtenue selon le mode d'exécution représenté à la Figure 5 :
- un coulisseau 21 est monté dans la tête 19a de la potence, et est mobile en translation dans le plan vertical 22 d'alignement des organes de fixation 3 et 4 ; ce coulisseau 21 comporte deux rainures 21a et 21b, alignées, dirigées perpendiculairement au plan vertical 22 précité.
- deux axes 23 d'articulation des deux bras 20 respectivement, sont dirigés perpendiculairement au berceau de cordage 2, et vers le bas ; ces deux axes sont tourillonnés sur la tête 19a de la potence 19, de part et d'autre de l'orifice cylindrique 19b assurant le coulissement du coulisseau 21.
- deux doigts 24 sont disposés sur les deux extrémités des deux bras 20 respectivement, opposées aux machoires 25 décrites ci-après, ces doigts 24 étant engagés en prise respectivement dans les rainures 21a et 21b.
- un organe de réglage 26 de la position du coulisseau 21 dans la tête de potence 19a comporte un bouton molleté 27 pouvant tourner librement par rapport à la tête 19a, et situé pour l'essentiel à l'extérieur de la potence 19, et une tige 28 filetée, co-axiale au coulisseau 21, coopérant avec un filetage homologue d'un taraudage 27a prévu dans l'axe du bouton molleté 27.The adjustable and concomitant articulation of the clamping arms 20 is obtained according to the embodiment shown in Figure 5:
- A slide 21 is mounted in the head 19a of the bracket, and is movable in translation in the vertical plane 22 of alignment of the fixing members 3 and 4; this slide 21 has two grooves 21a and 21b, aligned, directed perpendicular to the vertical plane 22 above.
- Two axes 23 of articulation of the two arms 20 respectively, are directed perpendicular to the rope cradle 2, and downwards; these two axes are journalled on the head 19a of the bracket 19, on either side of the cylindrical orifice 19b ensuring the sliding of the slide 21.
- Two fingers 24 are arranged on the two ends of the two arms 20 respectively, opposite the jaws 25 described below, these fingers 24 being engaged respectively in the grooves 21a and 21b.
a member 26 for adjusting the position of the slide 21 in the stem head 19a comprises a knurled knob 27 which can rotate freely relative to the head 19a, and located essentially outside of the stem 19, and a rod 28 threaded, co-axial with the slide 21, cooperating with a homologous thread of a thread 27a provided in the axis of the button softness 27.

L'extrémité libre de chaque bras 20 de bridage comporte une machoire de serrage 25, dirigée et ouverte vers le cadre 17a de la raquette, et plus particulièrement représentée à la Figure 4. Chacune de ces machoi­res, de forme aplatie, est dirigée de manière substantiellement perpendi­culaire par rapport au cadre 17a de la raquette. L'ouverture 25a de chaque machoire 25 présente un profil transversal divergent, en forme de V, symétrique par rapport au plan de référence 29 dont il sera question ci-après. La paroi interne de chaque machoire 25, et plus précisément de l'ouverture 25a, est recouverte d'une garniture moulée 30, en matière plastique, de manière à favoriser le déplacement limité du cadre 17a, sans l'endommager, lorsque les bras de bridage 20 sont rapprochés vers la raquette 17, dans le sens des flèches représentées à la Figure 5. Les deux bordures obliques, ou mors de l'ouverture 25a de chaque machoire 25, dégagent entre eux un passage ou fente 25b, s'étendant derrière l'ouverture 25a, et permettant le passage du fil de cordage.The free end of each clamping arm 20 comprises a clamping jaw 25, directed and open towards the frame 17a of the racket, and more particularly shown in FIG. 4. Each of these jaws, of flattened shape, is directed so substantially perpendicular to the frame 17a of the racket. The opening 25a of each jaw 25 has a divergent transverse profile, V-shaped, symmetrical with respect to the reference plane 29 which will be discussed below. The internal wall of each jaw 25, and more precisely of the opening 25a, is covered with a molded lining 30, of plastic material, so as to promote the limited displacement of the frame 17a, without damaging it, when the arms of clamping 20 are brought towards the racket 17, in the direction of the arrows shown in Figure 5. The two oblique edges, or jaws of the opening 25a of each jaw 25, clear between them a passage or slot 25b, extending behind the opening 25a, and allowing the passage of the cordage wire.

Comme le montrent les Figures 2 et 3, les deux bras 20 du premier organe 3 de fixation sont dirigés vers les deux bras 20 respec­tivement du deuxième organe de fixation 4, de manière à embrasser le cadre 17a de la raquette. Et, comme le montre la Figure 4, les quatre machoires 25 correspondantes s'étendent en hauteur, symétriquement de part et d'autre du plan de cordage 29 de référence. Ceci, en liaison avec les caractéristiques techniques précédemment décrites, permet d'auto-positionner et brider le cadre 17a de la raquette, dans le plan de référence 29 parallèle au berceau 2, sous l'effet du déplacement des bras de bridage 20, dans le sens des flèches représentées à la Figure 5, de la position écartée à la position rapprochée, décrites précédemment. Au cours du mouvement des machoires 25, de l'extérieur vers l'intérieur du berceau 2, le cadre 17a, quelle que soit sa géométrie, sa taille ou son épaisseur, est centré dans le plan de cordage 29 de référence ; ceci est montré en particulier par la Figure 4, ou l'on a représenté deux cadres 17a d'épaisseur et de dimensions différentes.As shown in Figures 2 and 3, the two arms 20 of the first fixing member 3 are directed towards the two arms 20 respectively of the second fixing member 4, so as to embrace the frame 17a of the racket. And, as shown in FIG. 4, the four corresponding jaws 25 extend in height, symmetrically on either side of the reference stringing plane 29. This, in conjunction with the technical characteristics described above, makes it possible to self-position and clamp the frame 17a of the racket, in the reference plane 29 parallel to the cradle 2, under the effect of the movement of the clamping arms 20, in the direction of the arrows shown in Figure 5, from the spread position to the close position, described above. During the movement of the jaws 25, from the outside towards the inside of the cradle 2, the frame 17a, whatever its geometry, its size or its thickness, is centered in the reference plane of rope 29; this is shown in particular in Figure 4, or there are shown two frames 17a of different thickness and dimensions.

Comme le montre aussi la Figure 2, le plan de cordage de référence, correspondant à celui du futur tamis de la raquette 17, et déterminé par les machoires 25 de serrage, est situé au-dessus des têtes 19a des potences de fixation 19.As also shown in FIG. 2, the reference stringing plane, corresponding to that of the future sieve of the racket 17, and determined by the clamping jaws, is located above the heads 19a of the fixing brackets 19.

Pour compléter la description des organes de fixation 3 et 4, il faut indiquer que chacun d'entre eux comporte un crochet 31, ou billard, permettant de maintenir en butée le cadre 17a de la raquette, et complétant l'action de fixation des machoires 25.To complete the description of the fastening members 3 and 4, it must be indicated that each of them comprises a hook 31, or billiard, allowing the frame 17a of the racket to be held in abutment, and completing the action of fixing the jaws 25.

Chaque billard 31 est actionné et réglé en translation, par rapport à la tête de potence 19a, indépendamment des bras (20) de bridage du cadre. Pour ce faire, on peut utiliser le mode d'exécution conforme à la Figure 14, et décrit sommairement comme suit :
- un premier bouton molleté 27 comporte deux parties 271 et 272, solidaires en rotation l'une de l'autre ; la première 271 est située à l'extérieur de la tête 19a, et peut être manipulée par l'opérateur ; la seconde 272 est montée libre en rotation sur une bague insérée sur la tête 19a, et arrêtée en translation par une rondelle 71 ; c'est cette pièce 272 qui comporte le filetage 27a coopérant avec la tige filetée creuse 28 solidaire du coulisseau ;
- un deuxième bouton molleté 72 est monté libre en rotation sur le premier bouton 27, et plus précisément la partie 271, grâce à une bague d'arrêt 73, et un roulement à bille 74 annulaire entre les pièces 72 et 272 ;
- le fût 72a du bouton molleté 72 comporte un filetage interne coopérant avec l'extrémité filetée 31a de la tige droite 31 du billard ; cette dernière coulisse librement à l'intérieur du tube 28 solidaire du coulisseau 21, et la tige 31 est arrêtée en rotation par une goupille solidaire du coulisseau.Each billiard 31 is actuated and adjusted in translation, relative to the stem head 19a, independently of the arms (20) for clamping the frame. To do this, you can use the execution mode according to Figure 14, and briefly described as follows:
- A first knurled button 27 comprises two parts 271 and 272, integral in rotation with one another; the first 271 is located outside of the head 19a, and can be manipulated by the operator; the second 272 is mounted free in rotation on a ring inserted on the head 19a, and stopped in translation by a washer 71; it is this part 272 which comprises the thread 27a cooperating with the hollow threaded rod 28 integral with the slide;
a second knurled button 72 is mounted to rotate freely on the first button 27, and more precisely the part 271, by virtue of a stop ring 73, and an annular ball bearing 74 between the parts 72 and 272;
- the barrel 72a of the knurled button 72 has an internal thread cooperating with the threaded end 31a of the straight rod 31 of the billiard table; the latter slides freely inside the tube 28 secured to the slide 21, and the rod 31 is stopped in rotation by a pin secured to the slide.

Ainsi, chaque billard peut être amené par l'opérateur en butée contre le cadre, et permet d'éviter tout déplacement longitudinal important de ce dernier lors du cordage.Thus, each billiard table can be brought by the operator into abutment against the frame, and makes it possible to avoid any significant longitudinal displacement of the latter during the stringing.

De manière connue en soi, les deux pinces de serrage 6 et 7 du fil de cordage comprennent chacune deux mors en vis à vis, dont un seul 32a a été représenté à la Figure 6, la bordure supérieure 32a du même mors affectant la forme d'un peigne, pour permettre le passage des fils trans­versaux du tamis. Pour chaque pince de serrage, 6 ou 7, des moyens non représentés sont prévus pour rapprocher et éloigner les deux mors 32.In a manner known per se, the two clamps 6 and 7 of the cordage wire each comprise two jaws facing each other, of which only one 32a has been shown in FIG. 6, the upper edge 32a of the same jaw affecting the shape d 'a comb, to allow the passage of the transverse son of the sieve. For each clamp, 6 or 7, means not shown are provided for bringing the two jaws 32 together and away from them.

Selon les Figures 6 et 7, les deux pinces de serrage 6 et 7 peuvent tout à la fois, être déplacées dans le plan de cordage, et orientées autour de leur propre axe 33 de pivotement, perpendiculaire au berceau 2, ou au plan de cordage précité. A cette fin, les deux pinces 6 et 7 sont agencées par rapport au berceau 2, exactement de la même manière, de telle sorte que seule la description de l'agencement de la pince 6 suffit, conformément aux Figures 6 et 7.According to Figures 6 and 7, the two clamps 6 and 7 can all at the same time be moved in the stringing plane, and oriented around their own pivot axis 33, perpendicular to the cradle 2, or to the stringing plane cited above. To this end, the two clamps 6 and 7 are arranged relative to the cradle 2, in exactly the same way, so that only the description of the arrangement of the clamp 6 is sufficient, in accordance with FIGS. 6 and 7.

Selon cet agencement, la pince de serrage 6 est mobile dans le plan de cordage précité, selon deux axes d'articulation 12 et 34, liés mais distincts, et tous les deux perpendiculaires au même plan de cordage. Autour du premier axe 12, fixe en rotation par rapport au berceau 2 de cordage, un bras satellite 35 est monté à rotation, parallèlement au berceau 2. Autour du deuxième axe 34, fixe en rotation par rapport au bras satellite 35, un bras porte-pinces 36 est monté à rotation, toujours parallèlement au berceau 2. Ce bras porte-pinces supporte un fût vertical 37, au sein duquel est disposé l'axe 33 de la pince 6. Le plateau supérieur 13 du berceau 2 comporte une lumière 13a circulaire, centrée sur le premier axe de rotation 12. Le bras satellite 35 est situé au-dessous du plateau 13, et le bras 36 porte-pinces au-dessus de ce même plateau, le deuxième axe d'articulation 34 traversant librement la lumière circulaire 13a.According to this arrangement, the collet 6 is movable in the abovementioned stringing plane, along two articulation axes 12 and 34, linked but distinct, and both perpendicular to the same stringing plane. Around the first axis 12, fixed in rotation relative to the cradle 2 of rope, a satellite arm 35 is rotatably mounted, parallel to the cradle 2. Around the second axis 34, fixed in rotation relative to the satellite arm 35, a support arm -clamps 36 is rotatably mounted, always parallel to the cradle 2. This clamp-carrying arm supports a vertical barrel 37, within which is disposed the axis 33 of the clamp 6. The upper plate 13 of the cradle 2 has a light 13a circular, centered on the first axis of rotation 12. The satellite arm 35 is located below the plate 13, and the gripper arm 36 above this same plate, the second articulation axis 34 freely passing through the light circular 13a.

Bien entendu, selon l'invention, on prévoit des moyens de blocage simultané en position, décrits ci-après, et du bras satellite 35 par rapport au berceau 2, et du bras porte-pinces 36 par rapport au bras satellite 35.Of course, according to the invention, means are provided for simultaneous locking in position, described below, and of the satellite arm 35 relative to the cradle 2, and of the clamp-carrying arm 36 relative to the satellite arm 35.

Conformément à la Figure 11, représentant un mode d'exécution du schéma de principe explicité à la Figure 6, les références numériques identiques désignent des organes ou pièces ayant les mêmes fonctions, décrites précédemment. Les moyens de blocage en position résultent de la combinaison des moyens suivants :
- le deuxième axe de rotation 34 est monté libre en rotation, dans un manchon 39 solidaire du bras satellite 35.
- le bras porte-pinces 36 est fixé en rotation sur l'extrémité 34a extérieure et supérieure du deuxième axe 34, grâce à un molletage approprié.
- un flasque 38 est fixé en rotation, par un ecrou 40, sur l'extrémité 34b intérieure et inférieure de l'axe 34, parallèlement au plateau 13.
- un électro-aimant 41 avec bobine 42 en couronne centrée sur le deuxième axe 34, est solidaire du bras satellite 35, entre le flasque 38 et le plateau 13 ; le bras satellite 35 est libre en translation, dans une course limitée, par rapport au deuxième axe 34, et l'électro-aimant 41 présente deux faces actives opposées, à savoir l'une 41a en vis à vis du plateau métallique 13, et l'autre 41b en vis à vis du flasque métallique 38.
- un moyen de commande électrique de l'électro-aimant 41 comporte :

  • 1°/ un bouton-poussoir 43 guidé en translation dans un perçage axial dans l'extrémité supérieure 34a de l'axe 34,
  • 2°/ une tige 44 de commande, disposée co-axialement dans l'axe 34a, et libre en translation par rapport à cette dernière,
  • 3°/ un levier 45 solidaire du bras satellite 35, et articulé sur ce dernier, en liaison à une extrémité avec la tige de commande 44,
  • 4°/ un contacteur 46 solidaire du bras satellite 35, en liaison avec l'autre extrémité du levier 45.
In accordance with Figure 11, representing an embodiment of the block diagram explained in Figure 6, identical reference numerals denote members or parts having the same functions, described above. The locking means in position result from the combination of the following means:
the second axis of rotation 34 is mounted to rotate freely, in a sleeve 39 secured to the satellite arm 35.
- The gripper arm 36 is fixed in rotation on the outer and upper end 34a of the second axis 34, thanks to an appropriate knurling.
- a flange 38 is fixed in rotation, by a nut 40, on the inner and lower end 34b of the axis 34, parallel to the plate 13.
- An electromagnet 41 with coil 42 in a crown centered on the second axis 34, is integral with the satellite arm 35, between the flange 38 and the plate 13; the satellite arm 35 is free in translation, in a limited stroke, relative to the second axis 34, and the electromagnet 41 has two opposite active faces, namely one 41a opposite the metal plate 13, and the other 41b opposite the metal flange 38.
an electrical control means for the electromagnet 41 comprises:
  • 1 ° / a push button 43 guided in translation in an axial bore in the upper end 34a of the axis 34,
  • 2 ° / a control rod 44, arranged co-axially in the axis 34a, and free in translation relative to the latter,
  • 3 ° / a lever 45 secured to the satellite arm 35, and articulated on the latter, in connection at one end with the control rod 44,
  • 4 ° / a contactor 46 secured to the satellite arm 35, in connection with the other end of the lever 45.

Grâce à cette disposition, et à une alimentation électrique appro­priée de l'électro-aimant 41, lorsque l'opérateur appuie sur le bouton 43, le levier 45 bascule vers le contacteur 46, pour alimenter la bobine 42 ; dès cet instant, la face active 41a de l'électro-aimant vient au contact de la plaque 13, et le bras satellite 35 se soulève légèrement, tandis que la face active 41b soulève et attire le flasque 38.Thanks to this arrangement, and to an appropriate electrical supply to the electromagnet 41, when the operator presses the button 43, the lever 45 switches to the contactor 46, to power the coil 42; from this moment, the active face 41a of the electromagnet comes into contact with the plate 13, and the satellite arm 35 lifts slightly, while the active face 41b lifts and attracts the flange 38.

Les moyens décrits précédemment permettent donc, d'une part, de bloquer en rotation le bras satellite 35 par rapport à la plaque 13, et donc au berceau 2, et d'autre part, de bloquer en rotation le bras porte-pinces 36, par rapport au bras satellite 35.The means described above therefore allow, on the one hand, to block in rotation the satellite arm 35 relative to the plate 13, and therefore in the cradle 2, and on the other hand, to block in rotation the clamp-carrying arm 36, relative to the satellite arm 35.

Conformément aux Figures 8 à 10, la tête de traction 9 du fil de cordage est distincte du reste de l'organe 8 de tension, et est articulée sur l'organe 8, autour d'un axe 47 horizontal. Cette tête 9 comporte de manière connue en soi, d'une part, un rouleau 48, ou diabolo, servant à l'enroulement du fil de cordage, et d'autre part, des mors de serrage du même fil, non représentés. Par pivotement autour de l'axe 47, la tête de traction 9 est mobile en hauteur, par rapport à l'organe 8, entre une position basse (conférer Figure 9), escamotée par rapport au manche 17b de la raquette, et une position haute (conférer Figure 10), coïncidant pour le fil de cordage à tirer, ou le plan tangent supérieur du diabolo 48, avec le plan de cordage de référence 29, décrit et défini ci-dessus. Par les moyens de commande décrits ci-après, la position escamotée selon la Figure 9 est obtenue lorsque la position angulaire du berceau 2, matérialisée par la position angulaire du manche 17b, est située à l'intérieur d'un angle de référence 49, corres­pondant au passage du manche 17b du côté de l'organe de tension 8. Et la position haute selon la Figure 10 est obtenue lorsque la position angulaire du berceau 2 est à l'extérieur de l'angle de référence 49. Selon le schéma de principe de la Figure 10 et le mode d'exécution des Figures 12 et 13, le moyen de commande de la tête de traction 9 est agencé de la manière suivante.In accordance with Figures 8 to 10, the traction head 9 of the cordage wire is distinct from the rest of the tension member 8, and is articulated on the member 8, around a horizontal axis 47. This head 9 comprises in a manner known per se, on the one hand, a roller 48, or diabolo, used for winding the cording wire, and on the other hand, jaws for clamping the same wire, not shown. By pivoting about the axis 47, the traction head 9 is movable in height, relative to the member 8, between a low position (confer Figure 9), retracted relative to the handle 17b of the racket, and a position high (see Figure 10), coinciding for the string to be pulled, or the upper tangent plane of the diabolo 48, with the reference string plane 29, described and defined above. By the control means described below, the retracted position according to FIG. 9 is obtained when the angular position of the cradle 2, materialized by the angular position of the handle 17b, is located inside a reference angle 49, corresponding to the passage of the handle 17b on the side of the tension member 8. And the high position according to FIG. 10 is obtained when the angular position of the cradle 2 is outside the reference angle 49. According to the diagram of principle of Figure 10 and the embodiment of Figures 12 and 13, the drive head control means 9 is arranged as follows.

L'organe de tension 8 comporte une colonne 50 sur la tête de laquelle est articulée la tête de traction 9. Une tige de commande 51 coulisse dans la colonne 50, et est en appui par son extrémité haute 51a avec la tête de traction 9. Une came 52 est montée en rotation sur la base de la colonne 50, et est en contact de l'extrémité basse 51b de la tige 51. Un moteur électrique 53 entraîne en rotation la came 52. La course en rotation de la came 52 est limitée à un demi-tour, grâce à un doigt 54, solidaire en rotation de la came précitée et situé à l'extérieur de l'organe 8, coopérant avec deux contacteurs de fin de course 55. Grâce à deux bossages situés sur le support 1, et délimitant l'angle de référence 49, le moteur électrique 53 de commande de la came 52 est activé ou désactivé, selon qu'un contacteur spécifique présent sur la périphérie du berceau 2 est enclenché ou déclenché par l'un quelconque des bossages précités.The tension member 8 comprises a column 50 on the head of which is articulated the traction head 9. A control rod 51 slides in the column 50, and is supported by its upper end 51a with the traction head 9. A cam 52 is rotatably mounted on the base of the column 50 , and is in contact with the lower end 51b of the rod 51. An electric motor 53 rotates the cam 52. The rotational travel of the cam 52 is limited to half a turn, thanks to a finger 54, integral in rotation of the aforementioned cam and located outside the member 8, cooperating with two limit switches 55. Thanks to two bosses located on the support 1, and delimiting the reference angle 49, the electric motor 53 for controlling the cam 52 is activated or deactivated, depending on whether a specific contactor present on the periphery of the cradle 2 is switched on or off by any of the above-mentioned bosses.

Quant à l'organe de tension 8, il coulisse sur une glissière à billes 56, et est entraîné vers l'arrière de l'appareil, par un pignon motorisé et une chaine, non représentés. L'actionnement du moteur 53, de manière à relever la tête de traction 9 au niveau du plan de référence 29, intervient avant mise en tension du fil de cordage, par le recul motorisé comme précé­demment décrit de l'organe 8.As for the tension member 8, it slides on a ball slide 56, and is driven towards the rear of the device, by a motorized pinion and a chain, not shown. The actuation of the motor 53, so as to raise the traction head 9 at the level of the reference plane 29, takes place before tensioning of the cordage, by the motorized recoil as previously described of the member 8.

Claims (10)

1- Appareil pour le cordage d'une raquette (17) de tennis, com­prenant :
- un support (1)
- un berceau (2) de cordage monté à rotation sur le support, réglable en position angulaire par rapport à ce dernier
- un moyen (3,4) de fixation rigide mais amovible du cadre (17a) de la raquette sur le berceau de cordage, disposé sur cette dernière, comprenant au moins deux machoires de serrage (25), chacune dirigée et ouverte (25a) vers le cadre (17a) de la raquette
- un organe de tension (8) du fil de cordage, solidaire du support, comportant une tête de traction (9) caractérisé en ce que d'une part, grâce à des moyens (27) de commande en déplacement des machoires de serrage (25), ces dernières sont mobiles uniquement dans un plan de référence de cordage, entre une position écartée libérant le cadre, et une position rapprochée serrant ce dernier, et d'autre part chaque machoire comporte des moyens d'auto-positionnement du cadre de la raquette, sous l'effet du déplacement d'au moins une machoire de serrage de la position écartée à la position rapprochée, pour amener le plan du tamis de la raquette dans le plan de cordage de référence. 1 - Apparatus for stringing a tennis racket (17), comprising:
- a support (1)
- a cradle (2) of rope mounted for rotation on the support, adjustable in angular position relative to the latter
- A means (3,4) for rigid but removable fixing of the frame (17a) of the racket on the string cradle, disposed on the latter, comprising at least two clamping jaws (25), each directed and open (25a) towards the frame (17a) of the racket
- a tensioning member (8) of the cordage wire, integral with the support, comprising a traction head (9) characterized in that on the one hand, by means (27) of control in movement of the clamping jaws ( 25), the latter are movable only in a rope reference plane, between a spaced apart position releasing the frame, and a close position clamping the latter, and on the other hand each jaw comprises means for self-positioning of the frame the racket, under the effect of the displacement of at least one clamping jaw from the spread position to the close position, in order to bring the plane of the screen of the racket into the reference stringing plane. 2- Appareil selon la revendication 1, caractérisé en ce que le moyen de fixation rigide compote au moins deux organes de fixation du cadre (17a) de la raquette, disposés en vis à ivs sur le berceau de cordage, caractérisé en ce que, chaque organe de fixation comprenant une potence (19), les deux machoires de serrage (25) sont solidaires de respectivement deux bras (20) de bridage du cadre de la raquette, s'étendant au-dessus du berceau de cordage, et montés chacun sur la tête (19a) d'une potence, de manière réglable entre une position écartée libérant le cadre et une position rapprochée bridant ce dernier. 2 - Apparatus according to claim 1, characterized in that the rigid fixing means compote at least two fixing members of the frame (17a) of the racket, arranged in ivs screw on the cradle of rope, characterized in that, each fastening member comprising a bracket (19), the two clamping jaws (25) are respectively secured to two arms (20) for clamping the frame of the racket, extending above the string cradle, and each mounted on the head (19a) of a bracket, so as to be adjustable between a separated position releasing the frame and a close position clamping the latter. 3- Appareil selon la revendication 1, caractérisé en ce que chaque mâchoire (25) présente un profil transversal divergent, par exemple en V, symétrique par rapport au plan de cordage (29) de référence. 3 - Apparatus according to claim 1, characterized in that each jaw (25) has a divergent transverse profile, for example in V, symmetrical with respect to the stringing plane (29) reference. 4- Appareil selon la revendication 2, caractérisé en ce que, d'une part, le deuxième organe (4) de fixation est agencé comme le premier organe (3) de fixation, deux bras de bridage (20) appartenant à un premier organe étant dirigés vers deux autres bras (20) de bridage respectivement, appar­tenant au deuxième organe, de manière à embrasser le cadre (17a) de la raquette, et d'autre part, les deux bras de bridage appartenant à un même organe de fixation sont articulés ensemble, de manière réglable, sur la tête (19a) de la potence correspondante. 4 - Apparatus according to claim 2, characterized in that, on the one hand, the second fixing member (4) is arranged like the first fixing member (3), two clamping arms (20) belonging to a first member being directed towards two other clamping arms (20) respectively, belonging to the second member, so as to embrace the frame (17a) of the racket, and secondly, the two clamping arms belonging to the same fixing member are articulated together, in an adjustable manner, on the head (19a) of the corresponding bracket. 5- Appareil selon la revendication 1, caractérisé en ce que chaque mâchoire de serrage (25a) comporte deux mors en vis à vis, dégageant entre eux un passage (25b) s'étendant derrière l'ouverture (25a) des mors, et permettant le passage du fil de cordage. 5 - Apparatus according to claim 1, characterized in that each clamping jaw (25a) comprises two jaws opposite, clearing between them a passage (25b) extending behind the opening (25a) of the jaws, and allowing the passage of the cordage wire. 6- Appareil selon la revendication 1, du genre comprenant au moins une pince de serrage (6,7) du fil de cordage, mobile en position dans le plan de cordage (29), et orientable autour d'un axe (33) de pivotement perpendiculaire à ce dernier, cette pince comprenant deux mors (32) en vis à vis avec une bordure supérieure (32a) en forme de peigne, et des moyens pour rapprocher et éloigner les deux mors l'un de l'autre, caractérisé en ce que la pince de serrage (6,7) est mobile dans le plan de cordage, selon deux axes (12, 34) d'articulation liés mais distincts, perpendiculaires audit plan de cordage, à savoir :
- un premier axe (12), fixe en rotation par rapport au berceau (2) de cordage, autour duquel un bras satellite (35) est monté en rotation, parallèlement au berceau.
- un deuxième axe (34), fixe en rotation par rapport au bras satellite, autour duquel un bras (36) porte-pince est monté à rotation, parallèlement au berceau.
- des moyens de blocage simultané en position, et du bras satellite par rapport au berceau, et du bras porte-pince par rapport au bras satellite, étant prevus. 6 - Apparatus according to claim 1, of the kind comprising at least one clamp (6,7) of the stringing wire, movable in position in the stringing plane (29), and orientable around an axis (33) of pivoting perpendicular to the latter, this clamp comprising two jaws (32) facing each other with an upper edge (32a) in the form of a comb, and means for bringing the two jaws closer and further apart from each other, characterized in that the clamp (6, 7) is movable in the stringing plane, along two axes (12, 34) of articulation linked but distinct, perpendicular to said stringing plane, namely:
- A first axis (12), fixed in rotation relative to the cradle (2) of cordage, around which a satellite arm (35) is mounted in rotation, parallel to the cradle.
- A second axis (34), fixed in rotation relative to the satellite arm, around which an arm (36) clamp holder is rotatably mounted, parallel to the cradle.
- Simultaneous locking means in position, and the satellite arm relative to the cradle, and the clamp holder arm relative to the satellite arm, being provided. 7- Appareil selon la revendication 6, caractérisé en ce que le berceau (2) de cordage comporte un plateau supérieur (13) avec une lumière (13a) circulaire centrée sur le premier axe de rotation, le bras satellite (35) est situé au-dessous du plateau, et le bras (36) porte-pince au-dessus dudit plateau, le deuxième axe d'articulation (34) traversant librement la lumière circulaire. 7 - Apparatus according to claim 6, characterized in that the cradle (2) of rope comprises an upper plate (13) with a light (13a) circular centered on the first axis of rotation, the satellite arm (35) is located at below the plate, and the arm (36) clamp holder above said plate, the second articulation axis (34) freely passing through the circular lumen. 8- Appareil selon la revendication 7, caractérisé en ce que les moyens de blocage en position consistent en la combinaison des moyens suivants :
- le deuxième axe de rotation (34) est monté libre en rotation sur le bras satellite (35),
- le bras porte-pince (36) est fixé en rotation sur l'extrémité (34a) extérieure du deuxième axe,
- un flasque (38) est fixé en rotation sur l'extrémité intérieure (34b) du deuxième axe, parallèlement au plateau,
- un électro-aimant (41) avec bobine en couronne centrée sur le deuxième axe de rotation (34), est solidaire du bras satellite, entre le flasque et le plateau (13) ; le bras satellite est libre en translation selon le premier axe, et l'électro-aimant présente deux faces actives opposées, l'une (41a) en vis à vis du plateau métallique (13), et l'autre (41b) en vis à vis du flasque métallique (38),
- il est prévu un moyen de commande (43, 44, 45, 46) électrique de l'électro-aimant. 8 - Apparatus according to claim 7, characterized in that the locking means in position consist of the combination of the following means:
the second axis of rotation (34) is mounted to rotate freely on the satellite arm (35),
- the gripper arm (36) is fixed in rotation on the end (34a) outside of the second axis,
- a flange (38) is fixed in rotation on the inner end (34b) of the second axis, parallel to the plate,
- an electromagnet (41) with coil in crown centered on the second axis of rotation (34), is integral with the satellite arm, between the flange and the plate (13); the satellite arm is free in translation along the first axis, and the electromagnet has two opposite active faces, one (41a) facing the metal plate (13), and the other (41b) facing with screw on the metal flange (38),
- An electric control means (43, 44, 45, 46) is provided for the electromagnet. 9- Appareil selon la revendication l, caractérisé en ce que, d'une part, la tête de traction (9) du fil de cordage est distincte du reste de l'organe (8) de tension, et est mobile en hauteur par rapport à ce dernier, et d'autre part, des moyens de commande permettent de placer la tête de traction en position basse (Fig. 9), escamotée par rapport au manche (17b) de la raquette, lorsque la position angulaire du berceau (2) est située, à l'intérieur d'un angle de référence correspondant au passage du manche du côté de l'organe de tension (8), et en position haute (Fig. 10), coïncidant pour le fil de cordage à tirer avec le plan de cordage de référence (29), lorsque la position angulaire du berceau est à l'extérieur de l'angle de référence. 9 - Apparatus according to claim l, characterized in that, on the one hand, the traction head (9) of the stringing wire is distinct from the rest of the tension member (8), and is movable in height relative to to the latter, and on the other hand, control means make it possible to place the traction head in the low position (Fig. 9), retracted relative to the handle (17b) of the racket, when the angular position of the cradle (2 ) is located, inside a reference angle corresponding to the passage of the handle on the side of the tension member (8), and in the high position (Fig. 10), coinciding for the cord to be pulled with the reference rope plane (29), when the angular position of the cradle is outside the reference angle. 10- Appareil selon la revendication 9, caractérisé en ce que l'organe de tension (8) comporte une colonne (50) sur la tête de laquelle est articulée la tête (9) de traction, une tige (51) de commande coulisse dans la colonne et est en appui du côté haut (51a) avec la tête de traction, une came (52) est montée à rotation sur la colonne et est au contact de l'extrémité basse (51b) de la tige de commande, un moteur (53) entraîne en rotation la came, sous le contrôle de contacteurs commandés par le passage angulaire du berceau (2) de cordage dans l'angle de référence (49). 10 - Apparatus according to claim 9, characterized in that the tension member (8) comprises a column (50) on the head of which is articulated the head (9) of traction, a control rod (51) slides in the column and is in abutment on the high side (51a) with the traction head, a cam (52) is rotatably mounted on the column and is in contact with the low end (51b) of the control rod, a motor (53) drives the cam in rotation, under the control of contactors controlled by the angular passage of the cradle (2) in the reference angle (49).
EP90420037A 1989-02-07 1990-01-25 Stringing apparatus for a tennis racket Expired - Lifetime EP0382652B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8901920 1989-02-07
FR8901920A FR2642655B1 (en) 1989-02-07 1989-02-07 APPARATUS FOR STRINGING A TENNIS RACKET

Publications (2)

Publication Number Publication Date
EP0382652A1 true EP0382652A1 (en) 1990-08-16
EP0382652B1 EP0382652B1 (en) 1992-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420037A Expired - Lifetime EP0382652B1 (en) 1989-02-07 1990-01-25 Stringing apparatus for a tennis racket

Country Status (8)

Country Link
US (2) US5026055A (en)
EP (1) EP0382652B1 (en)
JP (1) JPH0355071A (en)
AT (1) ATE81597T1 (en)
DE (2) DE382652T1 (en)
DK (1) DK0382652T3 (en)
ES (1) ES2035731T3 (en)
FR (1) FR2642655B1 (en)

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US5090697A (en) * 1991-03-22 1992-02-25 Poreex Industrial Co., Ltd. Racket frame stringing machine
US5269515A (en) * 1993-04-29 1993-12-14 Chu David T Machine for stringing game racket
FR2740046A1 (en) * 1995-10-23 1997-04-25 Gerber Bruno Jean Claude Automatic dispenser of strings for tennis, squash or badminton racket
WO1999001185A1 (en) * 1997-07-02 1999-01-14 Vaclav Zdrazila Racket mounting assembly for stringing machine
EP1486235A4 (en) * 2002-02-25 2008-07-16 Akifumi Nakane Device for replacing gut
EP2033694A1 (en) 2007-09-04 2009-03-11 Li, Chun-Chieh Height adjusting device for use in string puller of string pulling block of stringing machine
FR3027809A1 (en) * 2014-10-31 2016-05-06 Babolat Vs STRING BLOCKING SYSTEM FOR A RACKET CORKING MACHINE AND CORDERING MACHINE COMPRISING SUCH A SYSTEM
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CN106730694A (en) * 2016-12-24 2017-05-31 无锡明珠增压器制造有限公司 Racket threader
CN106730693A (en) * 2016-12-24 2017-05-31 无锡明珠增压器制造有限公司 Racket rotary positioning apparatus
CN106730692A (en) * 2016-12-24 2017-05-31 无锡明珠增压器制造有限公司 Racket positioner
WO2021023802A1 (en) * 2019-08-07 2021-02-11 Babolat Vs System for holding a racket and stringing machine comprising such a system

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US5222998A (en) * 1992-01-31 1993-06-29 Ferrari Importing Company Device for facilitating application of variable tension to sports racquet stringing bed
US5820500A (en) * 1994-05-03 1998-10-13 Raos; Davor Non-rotating racquet and stringing machine and method
US5639086A (en) * 1996-06-17 1997-06-17 Prince Sports Group Inc Universal stringing machine for sports racquets
US5733212A (en) * 1996-10-08 1998-03-31 Wise U. S. A., Inc. Electronic racket stringing machine
US5908362A (en) * 1997-02-11 1999-06-01 Ferrari Importing Company Tensioning device for stringing sports racquets having a string guide for maintaining constant string line of action to string gripper
JPH10326890A (en) * 1997-03-21 1998-12-08 Matsushita Electric Ind Co Ltd Semiconductor device and manufacturing method thereof
US6093121A (en) * 1998-10-27 2000-07-25 Bishop; Jonah C. Swivel clamp for racket stringing
US6162139A (en) * 1999-04-26 2000-12-19 Deuce Industries Ltd. String tensioning device
EP1857154A1 (en) * 2006-05-15 2007-11-21 Adolf Brunner Device for measuring racquet stringing of ball racquets
USD571384S1 (en) * 2007-01-23 2008-06-17 Erik Bernard Van Der Pols String-pulling body of a racket stringing apparatus
US8066593B2 (en) * 2007-04-11 2011-11-29 Wilson Sporting Goods Co. Customized racquet stringing system and method
US7833118B2 (en) * 2007-04-11 2010-11-16 Wilson Sporting Goods Co. Racquet stringing machine
US8075429B2 (en) 2007-04-11 2011-12-13 Wilson Sporting Goods Co. Racquet stringing machine
US7695383B2 (en) * 2007-04-11 2010-04-13 Wilson Sporting Goods Co. Racquet stringing machine
US7686713B2 (en) * 2007-04-11 2010-03-30 Wilson Sporting Goods Co. Racquet stringing machine
CN101391140B (en) * 2007-04-11 2011-11-23 威尔逊运动货品公司 Racquet stringing machine
CN100569320C (en) * 2007-07-06 2009-12-16 李俊杰 Wire drawing device height adjusting device of wire drawing machine head of racket threading machine
US7485055B1 (en) * 2007-08-23 2009-02-03 Min-Wei Lee String clamping device
US8206249B1 (en) * 2011-04-08 2012-06-26 Herbert H. Wise Electronic racquet stringing machine
US20150133243A1 (en) * 2013-11-11 2015-05-14 Vaclav Zdrazila Dual Stringing Tennis Racket Machine and Method
TWI650160B (en) * 2018-03-09 2019-02-11 愛町實業有限公司 Racket stringing machine
JP7262160B2 (en) * 2019-07-18 2023-04-21 ヨネックス株式会社 Turntable horizontal rotation position fixing mechanism

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US5090697A (en) * 1991-03-22 1992-02-25 Poreex Industrial Co., Ltd. Racket frame stringing machine
US5269515A (en) * 1993-04-29 1993-12-14 Chu David T Machine for stringing game racket
FR2740046A1 (en) * 1995-10-23 1997-04-25 Gerber Bruno Jean Claude Automatic dispenser of strings for tennis, squash or badminton racket
WO1999001185A1 (en) * 1997-07-02 1999-01-14 Vaclav Zdrazila Racket mounting assembly for stringing machine
EP1486235A4 (en) * 2002-02-25 2008-07-16 Akifumi Nakane Device for replacing gut
EP2033694A1 (en) 2007-09-04 2009-03-11 Li, Chun-Chieh Height adjusting device for use in string puller of string pulling block of stringing machine
FR3027809A1 (en) * 2014-10-31 2016-05-06 Babolat Vs STRING BLOCKING SYSTEM FOR A RACKET CORKING MACHINE AND CORDERING MACHINE COMPRISING SUCH A SYSTEM
US9993697B2 (en) 2014-10-31 2018-06-12 Babolat Vs System for blocking strings for a racket stringing machine and racket stringing machine comprising such a system
CN106693329A (en) * 2016-12-24 2017-05-24 无锡明珠增压器制造有限公司 Locating device with adjustable racket
CN106730694A (en) * 2016-12-24 2017-05-31 无锡明珠增压器制造有限公司 Racket threader
CN106730693A (en) * 2016-12-24 2017-05-31 无锡明珠增压器制造有限公司 Racket rotary positioning apparatus
CN106730692A (en) * 2016-12-24 2017-05-31 无锡明珠增压器制造有限公司 Racket positioner
WO2021023802A1 (en) * 2019-08-07 2021-02-11 Babolat Vs System for holding a racket and stringing machine comprising such a system
FR3099707A1 (en) * 2019-08-07 2021-02-12 Babolat Vs Racket holding system and stringing machine comprising such a system
TWI846925B (en) * 2019-08-07 2024-07-01 法商百保力公司 Racket holding system and stringing machine comprising such a system

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US5080360A (en) 1992-01-14
ATE81597T1 (en) 1992-11-15
DE69000388T2 (en) 1993-03-25
DE69000388D1 (en) 1992-11-26
FR2642655B1 (en) 1993-02-19
EP0382652B1 (en) 1992-10-21
JPH0355071A (en) 1991-03-08
US5026055A (en) 1991-06-25
ES2035731T3 (en) 1993-04-16
FR2642655A1 (en) 1990-08-10
DK0382652T3 (en) 1993-02-22
DE382652T1 (en) 1991-07-04

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