EP0035149A1 - Assembly of sheets joined together by a fastening element - Google Patents

Abstract

An assembly of a plurality of sheets which are connected by a fastening element and are made of flat material, such as paper, film/foil and the like, the sheets having at least two recesses in each case and the fastening element consisting of a web and two essentially flat holding members adjoining each end of the web, and at least one of the holding members being inserted through the recesses of the sheets and being bent over into a plane which is essentially parallel to the sheets. The holding members (4) have in at least one direction larger dimensions in outline than the cross-section of the web (3) and the recesses are constructed as elongated holes and have a smaller width (b) in relation to the width (B) of the holding members. <IMAGE>

Description

The invention relates to a composite of a plurality of sheets of sheet material, such as paper, film or the like, which are connected by a connecting element, the sheets each having at least two recesses and the connecting element comprising one web and two connected to one end of the web , consists essentially of flat holding members and at least one of the holding members is inserted through the recesses in the leaves and folded over in a plane substantially parallel to the leaves. In the most varied areas of business, administration, etc., there is a constant and very large need to connect sheets of sheet material, in particular paper, in more or less large numbers for storage, information, etc. This is done by means of connecting elements that are known in various designs. In the context of the invention, such an arrangement is made up of a plurality of sheets of sheet material, which are connected by a connection element are connected, referred to as a composite. For the rest, the invention does not refer only to the connection of sheets of paper, but also from any other flat materials, such as foils, braids, fabrics, etc.

Composites of the type described in the introduction, from which the invention is based, are generally known, for example, in so-called quick-stitchers. The sheets to be connected have two punched holes of a circular, also standardized cross section at a standardized distance. The connecting element consists essentially of a tab made of plastically flexible sheet metal, which has a central web and holding members adjoining its ends. The "_' holding members (which are not particularly offset from the web when the tab is stretched) are inserted through the holes punched into the sheets to be connected and folded over on the side of the sheet stack opposite the web into a plane substantially parallel to the sheets, so that the stack between the web and folded holding members is held together.

This well-known flat file combination shows various documents split up. For example, the web and holding members rest on relatively small contact surfaces on the leaves, so that these (the binding material) are subjected to considerable mechanical stress and consequently have only a short service life. To a certain extent, this can be countered by providing special cover strips on the bottom and top of the sheet stack, the lower cover strip usually also serving as a so-called insert stapler or the like in a folder. file. These measures are complex and do not exclude considerable stresses on the leaves in the area of the recesses with desirable certainty.

In addition, filing in a folder is only possible with the above-described training as an insert stapler, but the stitched compound protrudes laterally by a corresponding amount. A further disadvantage of the above-mentioned loose-leaf binder assembly is that the folded holding members protrude freely at the top of the assembly, which is necessary with a considerable length, so that a reasonably secure connection is ensured. It cannot be ruled out that the holding members get caught on other files, parts of files, or other objects, on the one hand lead to damage and on the other hand are opened unintentionally. All of this is disadvantageous.

For the rest, one knows (also from widespread practice) composites of sheets of paper, etc., which are held together by so-called staples. There are also various disadvantages. As is known, when staples are set, on the one hand there is the possibility of bending the staple legs, that is to say the holding members in the nomenclature of the present invention, so that a relatively reliable bond is produced. A loosening of the connection by removing the staples is only possible with a special device. On the other hand, the staple legs can be spread apart so that the bond can be released without any special tools by pulling out the essentially elongated staples. However, this is also relatively uncomfortable and encounters considerable difficulties, especially with a large number of sheets. A reuse of these staples is not possible under any circumstances, so that when a bond has been released to take out a sheet, make a copy, etc., a new staple is required to re-establish the connection dig is. It proves particularly disadvantageous that in each case a special rub is necessary to set the staple. Finally, the usual paper clips are known for connecting sheets, which, however, do not allow a permanent connection and are also unsuitable for thicker stacks of sheets.

The invention has for its object to provide a composite of the type described above, which is characterized by high reliability of the connection and simple, trouble-free handling, can be produced and solved again in a simple manner, in particular without special equipment, and permits reuse of the connecting element.

This object is achieved in that in at least one direction the holding members have larger dimensions in plan than the cross section of the web and that the recesses are designed as elongated holes and have a smaller width compared to the width of the holding members. The invention thus first teaches that the holding members are, as it were, end widenings of the web, which lower in at least one, namely to the axis around which the holding members are folded Right direction both with respect to the elongated holes as well as compared to the web have greater width, the web being of course dimensioned such that it can be passed through the elongated holes. A composite according to the invention is basically produced in such a way that the holding members are "buttoned" into the elongated holes, as it were. The holding members are first inserted through the elongated holes, which is possible due to the corresponding cross-sectional dimensions, then - in the manner explained in more detail below - folded over and held in place after the folding in that the holding members project over the elongated holes in the width direction while the web, while the web Elongated holes. According to the invention, at least two elongated holes are provided, the web of the connecting element passing through both elongated holes and the two holding members coming to rest on one and the same side of the sheet stack. Of course, there is also the possibility of arranging a larger number of elongated holes along a straight line and guiding the web through these elongated holes in a meandering manner. The length of the web corresponds at least to the distance between the outermost elongated holes and is preferably - according to the thickness of the sheet stack to be connected - larger by a suitable amount.

The invention explained above teaches special configurations of both the connecting element and the leaves to be connected and consequently comprises both connecting elements and leaves in each case to the extent that they are functional according to the teaching of the invention.

In particular, there are a variety of design options. Thus, in a first embodiment, the elongated holes are arranged with their longitudinal extension in the direction of their connecting ends, and the holding members are folded around the longitudinal axis of the web after being pushed through the elongated holes. In this embodiment, the holding members are consequently inserted through the elongated holes in an arrangement perpendicular to the plane of the leaves, and the connecting member is then rotated as a whole around the web and thus around the connecting ends of the elongated holes by approximately 90 degrees.

A further advantageous embodiment is characterized in that the elongated holes are arranged with their longitudinal extension substantially perpendicular to the direction of their connecting ends and that the holding members after passing through are inserted through the elongated holes around an axis parallel to the leaves and orthogonal to the web.

The connecting element can be designed such that the web is connected at the edge to the holding members.

This "paobliform" embodiment is recommended in particular in the arrangement of the elongated holes explained above with their longitudinal extension in the direction of their connecting ends. Another embodiment, which is particularly recommended when arranging the elongated holes with their longitudinal extension perpendicular to the direction of their connecting ends, is characterized in that the web is connected within the base area of the holding members, so that a "dumbbell-like" design results, in which the holding members when inserted, cover the elongated holes on both sides of the web. The web and the holding members of the connecting element can be parallel to one another, so that, particularly when the web is connected at the edge, it is coplanar with the holding members. Another possibility is to arrange the holding members inclined with respect to the web, preferably inclined at opposite identical angles. With this embodiment, which is particularly recommended for thicker stacks of sheets, it can are sufficient for the web to be inclined in accordance with the thickness of the sheet stack and for the retaining members to lie essentially flat on the surface of the sheet stack.

The holding members are preferably integrally formed on the web. In this case, in a particularly advantageous embodiment, the web is made of flexible material, so that, with the composite lying flat, it easily conforms to the course specified by the arrangement of the elongated holes. For this purpose, the web can consist of elastic material, for example of elastomeric plastic, for example also of a wire wound into a flexible screw spiral. A further possibility for the design of the web from flexible material consists in the use of plastically deformable material, for example from a metal wire, which can be snuggled to the course given by the length of the elongated holes by appropriate application of pressure. Another possibility is to make the bridge from a wire made of metal or plastic monofilament and the holding members at least partially from rigid material (plastic, ceramic, etc.). The holding links can thus be designed to be smooth and easy to grip according to the respective requirements. The ends of the web can For example, be poured into the holding members or pass into a wire ring into which the holding members are pressed.

In the event that a composite is to be formed from a particularly thick stack of sheets, the invention provides a special embodiment which is characterized in that the web is designed to be divisible and the web parts by means of integrally formed connecting members, for example a molded-on clamping pin on the one hand and one on the other molded sleeve, are interconnectable.

Within the scope of the invention, the holding members of the connecting element can largely be of any design, insofar as they can only be inserted through the elongated holes provided according to the invention. In particular, in the direction in which the insertion takes place, the holding members can largely be of any length and can also be different from one another. In this regard, an advantageous embodiment is characterized in that at least one of the holding members is designed as an identification carrier which can be provided with an imprint or a writing surface for advertising or identification or notes of the user.

For a composite according to the invention, sheets made of sheet material are distinguished from conventional sheets by a special arrangement and design of the recesses, which is essentially characterized in that at least two elongated holes are provided and are arranged and designed in the manner explained above. Such sheets can easily be produced with corresponding elongated holes, so that a user only has to fold such sheets together to produce the composite and connect them with a connecting element according to the invention. Preferably, the elongated holes are arranged in a sheet corner, so that there is still the possibility of a composite according to the invention in a conventional manner in a flat file, folder or the like. put down without it protruding sideways.

The advantages achieved by the invention consist essentially in the fact that sheets of sheet material in largely any number in a simple manner and in particular without the need for special staplers or the like. can be connected to each other. The connection according to the invention is form-fitting and can inadvertently only be used with the use of force, but is intended in a simple manner by removing the connection, likewise possible without devices solve element. When repeated, the connection is always made at one and the same, predetermined by the arrangement of the elongated holes, and insertion and removal of the connecting element can be carried out without any damage to the leaves. The firm bond achieved by the invention on the one hand and the simple unlocking on the other hand also prove to be particularly advantageous for the closure of printed matter items which, as is well known, must allow postal inspection. A connecting element according to the invention can be produced at extremely low costs and at the same time offers the advantageous application as a label for advertising, file identification, notes, etc.

The invention further relates to a device for punching at least two perforations into a sheet or a plurality of sheets of paper, plastic, etc. lying one on top of the other, which has an approximately plate-shaped foot or the like which is provided with through openings and serves as a cutting plate and which also has one or more brackets is equipped, in which are each guided against a spring, tubular cutting punch, which in its outer. Circumferential areas or the like around the inner circumferential areas of the passage openings of the foot. correspond and on their free before projecting ends of a pressure plate or the like. is arranged, in particular for the production of the composite described above.

This part of the invention has for its object to provide a device for punching at least two perforations in a sheet or a plurality of sheets lying one above the other, with the help of which it is possible to produce perforations which enable the threading of connecting elements, the holding members according to the proposal discussed above have dimensions larger than the cross-section of its web at least in one direction in plan.

According to the invention this is achieved in that the inner circumferential surfaces of the passage openings of the foot or the like. and the outer circumferential surfaces of the cutting punches have an elongated shape. This configuration of the punch makes it possible to pull in connecting elements, the webs of which penetrate both elongated holes produced by the punch, the retaining members resting on the top of the sheet stack and bringing about a firm bond.

It is advantageous or the like on one side of the foot. an attack provided so that the perforations can be carried out at a specific distance from the stop, that is, always at the same place. The stop can be releasably or the like with the foot. be connected so that it can be removed if necessary if perforations are to be made at any distance from the upper or lower edge of the sheet or cbr sheets. For this purpose, it is also possible to design the bracket to be foldable.

According to a further proposal of the invention, the brackets on the foot or the like. slidably mounted so that the perforations can have different distances from each other. A change in the hole spacing both from the upper or lower edge area and with respect to the distance between them is only considered in special cases, e.g. when thick stacks are to be joined together.

• Figur 1 einen Verbund von Blättern aus flächigem Material mit einem Verbindungselement in einer perspektivischen Teilansicht,
• Figur 2 verschiedene Stufen bei der Ausführung des in Figur 1 dargestellten Verbundes,
• Figur 3 eine andere Ausführungsform des Gegenstandes der Figur 1,
• Figur 4 eine der Figur 2 entsprechende Darstellung des Gegenstandes der Figur 3.
• Figur 5 verschiedene weitere Ausführungsformen von Verbindungselementen,
• Figur 6 in schaubildlicher Darstellung den erfindungsgemäßen Locher,
• Figur 7 eine geschnittene Seitenansicht der Figur 6 im Bereich einer Halterung,
• Figur 8 in schaubildlicher Darstellung das Unterteil des Lochers und
• Figur 9 in schaubildlicher Darstellung eine Halterung des Lochers.

Exemplary embodiments of the invention are explained in more detail with reference to the drawings, which shows:

• 1 shows a composite view of sheets of sheet material with a connecting element in a partial perspective view,
• FIG. 2 shows different stages in the execution of the composite shown in FIG. 1,
• FIG. 3 shows another embodiment of the subject of FIG. 1,
• 4 shows a representation of the object of FIG. 3 corresponding to FIG. 2.
• FIG. 5 different further embodiments of connecting elements,
• FIG. 6 shows the punch according to the invention in a diagram,
• FIG. 7 shows a sectional side view of FIG. 6 in the area of a holder,
• Figure 8 is a graphical representation of the lower part of the punch and
• Figure 9 shows a holder of the punch in a diagrammatic representation.

FIG. 1 shows a composite of a sheet stack 1 made of a plurality of sheets made of flat material, namely of paper, which is held together by a connecting element 2. The connecting element 2 consists essentially of a web 3 and two holding members 4, which are formed in the form of widenings on the two ends of the web 3. The thickness of the holding members 4 essentially corresponds the thickness of the web 3, while the plan of the holding members 4 has significantly larger dimensions than the cross-sectional dimensions of the web 3. In the embodiment shown in Figure 1, the web 3 is connected on the edge to the holding members 4, coplanar with them and made in one piece from elastomeric material.

The sheets brought together to form the sheet stack 1 have recesses in the form of elongated holes 5 at a predetermined (and of course matching) spacing, only one of which is shown in FIG. 1. The width b of the elongated holes 5 is significantly smaller than the width B of the holding members 4, as can be easily seen from FIG. 1. The web 3 runs through the elongated holes 5 and accordingly has smaller cross-sectional dimensions, while the holding members 4 lie essentially parallel to the sheet stack 1.

In the exemplary embodiment shown in FIG. 1, the elongated holes 5 lie with their longitudinal extension in the direction of their connecting ends and thus simultaneously in the direction of the web 3. The manufacture of the composite shown in FIG. 1 is explained in detail with reference to FIG. 2.

The sheet stack 1 is first bent by a direction perpendicular to the connecting end of the elongated holes 5 as far as is necessary to insert the connecting element 2 through the elongated holes 5 (FIG. 2a). The connecting elements 2 are in a position parallel to the longitudinal extension of the elongated holes 5 and perpendicular to the sheet stack. The connecting element 2 is then rotated as a whole about the longitudinal axis of the web 3 by approximately 90 degrees (FIG. 2b). The sheet stack 1 is placed flat thereon, the web 3 running in a slight arc through the elongated holes 5 and the connecting elements 2 lying approximately parallel to the top of the sheet stack 1 (FIG. 2c). Figure 2 d shows a top view of the finished composite and shows how the connecting elements 2 protrude laterally beyond the elongated holes 5 and are thereby held. The removal of the connecting element 2 for releasing the composite is carried out accordingly in the reverse order.

FIG. 3 shows an embodiment which corresponds essentially to the subject of FIG. 1, but in which the elongated holes 5 are arranged differently, namely with their longitudinal extension perpendicular to the direction of their connecting ends and thus perpendicular to the web 3 of the connecting element 2. The web 3 is connected to the base of the holding members 4, so that a "dumbbell-like" shape results. The manufacture of the composite according to FIG. 3 is shown in individual steps in FIG. 4. First, the sheet stack 1 is bent so far about a direction perpendicular to the connecting end of the elongated holes 5 that the connecting element 2 can be inserted through the elongated holes 5 (FIG. 4a). The holding members 4 are then folded over an axis parallel to the sheets of the sheet stack 1 and orthogonal to the web 3 (FIG. 4b). The sheet stack 1 is then laid flat, with the result that the web 3 runs in a slight arc through the elongated holes 5 and the holding members 4 nestle essentially parallel to the sheet stack 1 on the top side thereof (FIG. 4c). FIG. 4d shows a top view of the configuration according to FIG. 4c. It can be seen that - as far as in the case of FIG. 2d - the web runs on the underside of the sheet stack 1 and the holding members 4 are held on the top by protruding the elongated holes 5 on both sides. The bond is released in reverse order.

The web consists generally and also in the illustrated embodiments of a material of good flexibility and relatively small thickness, so that it easily adapts to the course given by the elongated holes 5 without causing the sheet stack 1 to bend.

While the web 3 and the holding members 4 are arranged parallel to one another in the exemplary embodiment according to FIGS. 1 and 2 and perpendicular to one another in the exemplary embodiment according to FIGS. 3 and 4 - in each case in the stress-free state, FIG. 5a shows an exemplary embodiment in which the holding members 4 are opposite Web 3 are inclined by the same acute angle in opposite directions, so that - in particular in the case of thicker sheet stacks - the holding members 4 lie flat on the upper side, while the web 3 is guided in an arc through the elongated holes 5. This embodiment can also be inserted through the elongated holes 5 in a particularly simple manner (cf. FIG. 4 a). A correspondingly inclined arrangement of web 3 and holding members 4 is of course also possible in the embodiment according to FIGS. 1 and 2.

While in the previously explained embodiments the connecting element is produced in one piece, FIG. 5b shows an embodiment in which the web 3 is formed from a plastic monofilament and at the end is cast or glued into the holding members 4 made of rigid plastic material. This can of course also be achieved in a corresponding manner in an embodiment according to FIGS. 1 and 2.

Figure 5c shows an embodiment that is particularly recommended for thick sheet stacks. Here, the web 3 is designed to be divisible, one of the two web parts having an integrally formed sleeve 6 and the other web part having an integrally formed clamping pin 7. In the case of very thick stacks of sheets, a procedure according to FIGS. 2 and 4 can prove to be difficult. In such a case, the embodiment shown in FIG. 5c offers the possibility of inserting the two halves of the connecting element 2 through one of the elongated holes and then connecting them together by joining the sleeve 6 and the clamping pin 7. Sleeve 6 and pin 7 are formed in a manner known per se so that they can be locked together.

In the embodiment shown in FIG. 5c, it is necessary to establish the bond between the two connecting links on the underside of the sheet stack. In addition, the job due to the thickness of the connecting links can interfere. In these cases, the embodiment shown in FIG. 5d is recommended, in which the connecting links are laid directly on one of the two holding links 4. The holding member 4 has on its underside a buckle-like passage 8 through which the web 3 designed as a flat belt is passed. The holding member 4 can be moved with the passage 8 on the web 3, a clamping being achieved by appropriate dimensioning of the web 3 and passage 8, by means of which the holding member 4 is held in the position provided in each case. In practice it can be seen that even this force-locking connection between the holding member 8 and the web 3 alone ensures a reliable connection. In addition, it is of course also possible to provide a locking mechanism in a manner known per se, for example in the form of a sawtooth profile on the web 3 and a tongue arranged in the passage 8.

This embodiment can be implemented both in the "paddle shape" according to FIGS. 1 and 2 and in the "dumbbell shape" according to FIGS. 3 and 4.

In any case, this embodiment offers the significant advantage that the effective length of the web 3 can be adapted to the respective thickness of the sheet stack. This embodiment can of course first be applied in the manner explained in connection with FIGS. 2 and 4. A further possibility, which may be advantageous in particular in the case of thick stacks of sheets, is to first only thread the web 3 through the elongated holes and then to attach the holding member 4 provided with the passage 8.

In all of the illustrated exemplary embodiments, there is the possibility, which is not reproduced in detail, of designing the holding members 4 on their upper side as identification carriers for receiving advertising, file identifications, notes, etc.

A connecting element according to the invention described above on the basis of various exemplary embodiments will often be formed symmetrically with holding members 4 of identical design in terms of their dimensions. From the above description, however, it is readily apparent that it is sufficient for producing the composite if only one of the two holding members 4 is designed with respect to its cross-sectional dimensions so that it can be inserted through the elongated holes 5. So that exists in many cases Particularly advantageous possibility of making the other holding member 4 larger and in particular so large that it cannot be inserted through the elongated holes 5. If use is made of this possibility (not shown in the figures), the larger holding member or the like can be used in a particularly advantageous manner as a label carrier. be formed.

In the embodiment according to FIGS. 6 to 9, 11 denotes the plate-shaped foot, on the underside of which a collecting box 12 is attached in a conventional manner for receiving the punched-out plates. The foot 11, which serves as a cutting plate, is provided with through openings 13 which cooperate with the cutting punches to be described later. Attached to the foot are the brackets 14, which are approximately angular in cross-section and whose free legs protrude beyond the foot 11.

On the brackets 14 guides 15 are attached, which are penetrated by cross pins 16. The cutting punches 17, which work against the action of springs 18, are arranged displaceably in the guides 15. The cutting punches 17 have recesses 19 suf, through which the transverse pins 16 pass. The inner circumferences of the passage openings 13 and the outer circumferential surfaces of the cutting punches 17 correspond to one another in shape and have an elongated shape, so that the holes produced are shaped like an elongated hole. On the freely projecting ends of the cutting punch 17, a pressure plate 20 is arranged, which serves as a support for one hand.

On one side of the foot 11 there is a stop 21, which can have the shape of a bracket, as can be seen in FIG. 6. However, it is also possible for the stop 21 to be formed by two pins, as can be seen in FIG.

By placing the upper edge of a stack 22 of individual sheets against the stop 21 and the inside of the brackets 14, it is possible to always make holes at exactly the same distance from the upper or lower edge of the sheets or the stack. In the event that this distance is to be changed, it is possible to pivot the stop 21 into the position shown in dashed lines in FIG. 6 or, in the embodiment according to FIG. 8, to pull the pins out of their receptacles.

As not shown in detail, the brackets 14 can be slidably attached to the foot 21, so that a different distance between the two holes is possible.

The pressure plate 20 is fastened to the free ends of the cutting punches 17 by means of screws 23, so that the cutting punches 17 can be removed from their guides 15 by loosening the screws 23.

The undersides of the cutting punch 17 are cut concave in order to achieve a good cutting effect.

The invention is not limited to the illustrated and described embodiment. For example, the inner circumferential surfaces of the passage openings and the outer circumferential surfaces of the cutting elements which are adapted to them can generally have shapes that deviate from a circular shape, for example oval, diamond, deltoid or the like. be trained.

Claims (18)

1. Compound of a plurality of sheets of sheet material, such as paper, film or the like, connected by a connecting element, wherein the sheets each have at least two recesses and the connecting element consists essentially of one web and two connected to one end of the web flat holding members and at least one of the holding members is inserted through the recesses of the leaves and folded into a plane substantially parallel to the leaves, characterized in that in at least one direction the holding members (4) have larger dimensions in plan than the cross section of the web (3), and that the recesses are designed as elongated holes (5) and have a smaller width (b) than the width (B) of the holding members (4). 2. Composite according to claim 1, characterized in that the elongated holes (5) are arranged with their longitudinal extension in the direction of their connecting ends, and that the holding members (4) after insertion through the elongated holes (5) about the longitudinal axis of the web (3) have been killed. 3. Composite according to claim 1, characterized in that. the elongated holes (5) are arranged with their longitudinal extension substantially perpendicular to the direction of their connecting ends, and that the holding members (4) after being pushed through the elongated holes (5) by a parallel to the leaves (1) and orthogonal to the web (3) Axis are flipped. 4. Composite according to one of claims 1 to 3, characterized in that the web (3) is connected at the edge to the holding members (4). 5. Composite according to one of claims 1 to 3, characterized in that the web (3) is connected within the base of the holding members (4). 6. Composite according to one of claims 1 to 5, characterized in that the web (3) and the holding members (4) are parallel to each other. 7. Composite according to one of claims 1 to 5, characterized in that the holding members (4) with respect to the web (3) are arranged inclined. 8. Composite according to one of claims 1 to 7, characterized in that the holding members (4) on the web (3) are integrally formed. 9. Composite according to one of claims 1 to 8, characterized in that at least the web (3) consists of flexible material. 10. Composite according to one of claims 1 to 8, characterized in that the web (3) consists of a turn made of metal or plastic monofilament and the holding members (4) consist at least partially of rigid plastic material. 11. Composite according to one of claims 1 to 10, characterized in that the web (3) is designed to be divisible and the web parts can be connected to one another by means of integrally formed connecting members. 12. Composite according to one of claims 1 to 11, characterized in that at least one of the holding members (4) is designed as a label carrier. 13. Device for punching at least two perforations. gene in a sheet or several sheets of paper, plastic, etc. lying one on top of the other, which have an approximately plate-shaped foot or the like, provided with through openings, designed as a cutting plate. has, which is equipped with one or more brackets, in each of which slidable against a spring, tubular cutting punches are guided, or the like in their outer peripheral surfaces, such as the inner peripheral surfaces of the passage openings of the foot. correspond and on the freely projecting ends of a pressure plate or the like. is arranged, in particular for the production of a composite according to claim 1 and / or one or more of the preceding, characterized in that that the inner circumferences of the passage openings (13) of the foot (11) or the like. and the outer circumferential surfaces of the cutting punches (17) have an elongated shape. 14. The apparatus according to claim 13, characterized in that on one side of the foot (11) or the like. a stop (21) is provided. 15. The apparatus according to claim 14, characterized in that the stop (21) releasably with the foot (11) or the like. connected is. 16. The apparatus according to claim 14, characterized in that the stop (21) slidably on the foot (11) or the like. is appropriate. 17. The apparatus according to claim 14, characterized in that the stop (21) can be folded down. 18. The apparatus according to claim 13 and / or one or more of the preceding, characterized in that the holders (14) on the foot (11) or the like. are slidably attached.

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