US2743061A - Winding device - Google Patents

Description

April 1956 c. B. KINGSBURY 2,743,061

WINDING DEVICE Filed Nov. 26, 1952 5 Sheets-Sheet 1 Q m N Q 1 \N o i I N (.5 i; LI-

5 a? w m N S N g J Q xx 4 \3 Q INVENTOR W CHADWIGK B. KINGSBURY BY M J a 1% g ATTORNEY April 1956 c. B. KINGSBURY 2,743,061

WINDING DEVICE Filed Nov. 26. 1952 5 Sheets-Sheet 2 Fla? GHADWIOK B. KINGSBURY W1 6 ATTORNEY INVENTOR April 24, 1956 c. B. KINGSBURY WINDING DEVICE 5 Sheets-Sheet 3 Filed Nov. 26, 1952 NVENTOR M I A; ATTORNEY A ril 24, 1956 c. B. KINGSBURY 2,743,061

WINDING DEVICE Filed Nov. 26, 1952 .5 Sheets-Sheet 4 /J 55 F IG. 5.

WW V F l G 8 INVENTOR GHADWIGK B. KINGSBURY ATTORNEY April 24, 1956 c. B. KINGSBURY WINDING DEVICE 5 Sheets-Sheet 5 Filed NOV. 26, 1952 FIG. 9.

INVENTOR GHADWICK B. KINGSBURY BY fl-yx ffl Z ATTORNEY United States Patent WINDING DEVICE Chadwick B. Kingsbury, Elizabethton, Tenn., assignor to North American Rayon Corporation, New York, N. Y., a corporation of Delaware Application November 26, 1952, Serial No. 322,682

6 Claims. (Cl. 242-18) This invention relates to Winding devices in general. More particularly, this invention relates to an improved winding device adapted to wind substantially dynamically balanced yarn packages.

An object of this invention is to provide an improved winding device adapted to wind substantially dynamically balanced yarn packages at relatively high speeds.

Another object of this invention is to provide an improved winding device adapted to wind substantially dynamically balanced yarn packages having concentric layers of yarn.

Another object of this invention is to provide an improved winding device for winding yarn packages, said device being provided with an arrangement for preventing the yarn packages from engaging the driving mechanism in case the yarn breaks or after the package is wound.

Still another object of this invention is to provide an improved winding device for winding yarn packages, said device being provided with a weight mechanism that tends to counterbalance the weight of the yarn package so that the pressure exerted by the yarn package on the driving mechanism is substantially uniform during the winding of the yarn package.

A further object of this invention is to provide an improved winding device for winding yarn packages, said device being constructed with a leverage that is actuated during the winding of the yarn package so as to control the pressure between the yarn package and the driving mechanism during the winding process.

Still another object of this invention is to provide an improved winding device for winding yarn packages, said device having a weight that controls the pressure of the yarn package on the driving mechanism in such a way that the yarn package rides smoothly and evenly on the drive roll.

A further objective of this invention is to provide an improved winding device for winding yarn packages, the device being provided with a weight that is connected to the yarn package supporting frame by variable leverage that controls the effective weight of said weight member transmitted to said supporting frame so that the pressure of said yarn package on said drive roll is substantially uniform during the winding of said package. v

Another object of this invention is to provide an improved and simplified yarn winding device eliminating the usual internal arbors, axles and the like normally used to support and guide the bobbin during its build up. Still another object of this invention is to provide an improved winding device for Winding yarn packages, said device being provided with an arrangement of cams,

levers and counterweights to function as a friction and inertia snubber maintaining contact free of vibration between the bobbin and drive roll engaging the bobbin so as to wind a bobbin free of longitudinal flat areas.

A further object of this invention is to provide an improved winding device for winding yarn packages, said device being provided with an arrangement 'of cams, levers and counterweights to function as a friction and inertia snubber for maintaining a steady and uninterrupted pressure between the bobbin and drive roll engaging the bobbin, which steady pressure may, however, be held uniform or increased or decreased as the yarn bobbin is built up.

Other and further objects of this invention will be apparent to those skilled in the art to which it relates from the following specification, claims and drawings.

In accordance with this invention there is provided a winding device for winding substantially dynamically balanced yarn packages efliciently and expeditiously. The yarn packages are wound upon a suitable tubular support or bobbin With or without heads which may be made of cardboard, Bakelite, metal or similar material and an arrangement is provided for supporting this bobbin in contact with a drive roll for the purpose of rotating the bobbin. As layers of yarn are wound upon the bobbin this drive roll engages the outermost layer of the yarn. Accordingly, the yarn package gradually increases in weight and diameter as more yarn is wound thereon so that normally the pressure of the yarn package on the drive roll would increase. However, in accordance with this invention there is provided a pivotally supported weight that is connected to the yarn package supporting frame by means of a variable leverage. This variable leverage functions to increase the elfective pressure of the weight member exerted against the yarn package supporting frame so that the weight of the yarn wound upon the yarn package is counteracted and the pressure of the yarn package on the drive roll is under predetermined control during the winding of the yarn package.

This mechanism also includes a toggle type latch arrangement which functions to hold the package out of engagement with the drive roll at the discretion of the operator. This permits the operator to latch the bobbin out of engagement with the drive roll in case of a yarn break, thus, preventing damage to the yarn body from continued contact with the drive roll after a break has occurred.

The friction of the variable leverage also may be varied or adjusted so as to cause the yarn package to ride on the drive roll in a smooth and uniform manner. This feature also improves the quality of the yarn package since it eliminates bumpy and uncontrolled contact of the yarn package with the drive roll, and thereby insures the uniform circular contour of the package.

Further details of this invention will be apparent to those skilled in the art to which it relates from the follow ing detailed description of an embodiment thereof and also from the drawings in which, briefly:

Fig. 1 is a perspective view of a winding device made in accordance with this invention and adapted to wind two yarn packages;

Fig. 2 is a plan view of the embodiment of this invention shown in Fig. 1;

Fig. 3 is a sectional view of one of the yarn package supporting bearings and this section view is taken along the line 3--3 of Fig. 2;

Fig. 4 is a side view of the embodiment shown in Fig. 1;

Fig. 5 is a view taken along the line 55 of Fig. 2;

Fig. 6 is a view similar to Fig. 5 with the bearing sleeve shifted axially along the shaft;

Fig. 7 is a view similar to Fig. 6 with the slotted bearing member lifted almost away from the shaft;

Fig. 8 is a view taken along the line 8--8 of Fig. 7; Fig. 9 is a detail view of the pivoted weight and variable leverage mechanism employed in this invention;

Fig. 10 is a side view of the pivoted weight mechanism and is taken along the line 6-6 of Fig. 9 to show this mechanism in latched position; 7

Fig. 11 is another side view of the pivoted weight mechanism shown in Fig. to show the positions of the levers in this mechanism when the bobbin is empty;

Fig. 12 is a detail view of the latch mechanism taken along the line 12-12 of Fig. 9; and

Fig. 13 is an additional view of the pivoted weight mechanism showing the positions of the levers in this mechanism when the bobbin is full.

Referring to Fig. l of the drawing there is shown an embodiment of this invention in perspective, and in this view one of the yarn supporting bobbins 18 is shown wound with yarn 11, the circumferential surface of which engages the circumference of the drive roll 12 which rotates the yarn 11 on bobbin 10 as yarn is fed thereto by a suitable traverse mechanism 12a. The bobbin 10 may be of material such as cardboard, Bakelite, metal or the like and is supported on each of the arms 13 and 14, as shown in Fig. 2, by a bearing structure such as is shown in Fig. 3. The arms 13 and 14 are connected together by a suitable cross member to form a U-shaped frame 15 that is pivotly supported on the shaft 16 by bearing members 17 and 18 that are attached to the frame 15 so that this frame and the yarn package supported thereby may be moved up and down a short distance by the lever 19 as will be described hereinafter. Furthermore, because of this pivoted support, the yarn package is permitted to ride against the surface of the drive roll 12 which is carried by the shaft 20 that is driven by a motor through a suitable driving mechanism.

Suitable ball bearing arrangements such as shown in Fig. 3 are carried by each of the arms 13 and 14 although only one of these bearing arrangements carried by the arm 14 is shown movable with respect to the yarn package both of the bearing arrangements may be movable if desired. This movement is accomplished by the arm 19. The bearing arrangement is provided with a flanged wheel 21 having a bevelled edge for engaging the end of the tube 10. This wheel has a hole formed therein for receiving and tightly holding the outer race 22 which engages the ball bearings 23. The inner race 24 which also engages the ball bearings 23 is supported by the shaft 25 that is axially movable in a hole formed in the arm 14. A pin 26 carried by the shaft 25 is adapted to engage the arm 14 in the slots 27 which extend in a direction parallel to the length of the shaft 25. The pin 26 is also adapted to engage the arm 19 in the slots 28 which extend in a direction substantially at right angles to the length of the shaft 25. The end of the arm 19 that is pivoted by the pin 29 to the arm 14 is of U-shaped configuration so that the ends 19a and 19b of the U-shaped portion engage opposite sides of the end of the arm 14 to which these arms are pivoted by the pin 29. This bearing support construction enables the operator to move the rotatable wheel 21 away from the end of the bobbin 10 by manipulating the arm 19 so that this bobbin may be either removed or inserted.

A spring 30 having a substantially U-shaped configuration is supported on the arms 14 and 19 as shown in Fig. 4 for the purpose of urging the flanged wheel 21 into engagement with the end of the bobbin 10. This spring 30 is provided with a central portion 31 that extends across the arm 14, and two substantially parallel portions 32 and 33 that are connected to the portions 31 and extend away therefrom past the ends of the pin 29. and terminating in short hook portions 34 and 35 that engage inner surfaces of the U-shaped portions of the arm 19. Thus, the pin 29 serves to hold the spring 30 in place and also cooperates with this spring to apply pressure against the arm 19 which forces the wheel 21 against the end of the bobbin 10.

The arm 13 is provided with a similar bearing structure for supporting a flanged wheel 21a similar to the flanged wheel 21 shown in Fig. 3, that is adapted to engage the other end of the bobbin 10. This wheel is supported by a ball bearing and shaft arrangement similar to that shown in Fig. 3, except that the shaft is fixedly attached to the arm 13 although a movable arrangement may be employed in this case also if desired.

Another frame 36 which is the same as the frame 15 and is provided with identical corresponding parts is also pivotly supported on the shaft 16. For this purpose the frame 36 is provided with bearing members 37 and 38 that are positioned adjacent to the bearing members 17 and 18 respectively of the frame 15. The bearing portions 17 and 37 engage the sleeve 39 that is supported by the shaft 16 which is held in place on the shaft by a suitable set-screw 40 that is threaded into the flange portion 41 of this sleeve. The bearing members 18 and 38 engage the sleeve 42 which is similar to the sleeve 39 and is held in place on the shaft 16 by the set-screw 43 that is threaded into the flange 44 of this sleeve as shown in Figs. 5, 6 and 7. The flanges 41 and 44 are of larger diameter than the diameter of the body portion of these sleeves and these flanges are disposed so that flange 41 engages one side of the bearing 17, the other side of this bearing member abutting the outer side of the bearing member 37 and the flange 44 abutting the outer side of the bearing member 38, the other side of this bearing abutting the outer side of the bearing 18. With this arrangement, the bearing members 17 and 37 are kept from shifting on the sleeve 39 and the bearing members 18 and 38 are kept from shifting on the sleeve 42.

The bearing members 17, 18, 37 and 38 are each provided with slots such as the slot 45 that is cut into the bearing member 38 as shown in Figs. 4, 5, 6 and 7. The width of this slot is slightly larger than the diameter of the shaft 16 but substantially less than the outside diam eter of the sleeve 42 as shown in Fig. 8 so that the bearing member cannot be removed from the sleeve. However, if the sleeve 42 is slipped aside on shaft 16 after the set-screw 43 is loosened as shown in Figs. 6 and 7, these bearing members 18 and 38 may be removed from the shaft 16. This is illustrated in Figs. 7 and 8 where one of the members 18 is shown being so removed. The frames 15 and 36 may, therefore, be removed from the shaft 16 by loosening the set-screw 40 of the sleeve 39 and the set-screw 43 of the sleeve 42 and sliding these sleeves on the shaft 16 so as to unlock the bearing members 17-37 and 18-38 so that these bearing members may be slipped off of the shaft 16 through the respective slots thereof. The sleeves 39 and 42 serve to lock these bearing members on the shaft 16 and also serve to hold these bearing members in certain predetermined position on this shaft. The flanges 41 and 44 cooperate with these bearing members to produce this latter result.

Each of the frames 15 and 36 is provided with a lever arm such as arm 46 that is made integral with the frame 36 as shown in Figs. 1 and 4. These arms cooperate with pivoted weight mechanisms that are supported by the shaft 47 and function to maintain a controlled steady pressure on the drive rolls 12 of the yarn packages being wound on the bobbins 10. These weight mechanisms each include a weight member 48 attached to a sleeve 49 that is rotatably positioned on the shaft 47. Each of these sleeves is provided with an arm 50 having a slot 51 cut therein as shown in Figs. 10 and 11. Roller 52 that is supported on the arm 46 by the pin 53 engages the arm 50 in the slot 51. However, where additional friction is desired to prevent the yarn package 11 from jumping up and down on the drive roll 12 when certain types of yarn are being wound, for example, the roller may be omitted and the pin 53 may itself be made large enough to engage the sides of the slot 51. Additional friction may be obtained between thearms 46 and 50 by the use of a spring asillustrated in Fig. 9 as will be described hereinafter.

The weight 48 projects from the bearing member 49 at an angle which is substantially a right angle with respect to the arm 50 and when the winding of the yarn package on the bobbin 10 is initiated this weight 48 is in its uppermost position and the-roller 52 is disposed at the far end of the slot 51 as shown in Figs. 1 and 11. At this time, the weight 48 exerts only a slight lifting action on the mechanism tending to lift the bobbin away from the drive roll 12. However, as the yarn is wound on the bobbin 10 the bobbin diameter increases and the roller 52 slides in the slot 51 toward the shaft 47 and gradually reduces the effective length of the arm 50 so that the effect of the weight 48 is increased. As a result a predetermined pressure of the yarn package upon the drive roll 12 is maintained. This predetermined pressure, may be made to increase, decrease or remain constant as the bobbin builds up. v

When a gradually decreasing pressure between bobbin 10 and the drive roll 12 is desired, the counterweight 48 may be adjusted to increase its effective pressure on arm 46, thus over compensating for the bobbin weight increase as it builds up. When a gradually increasing pressure between bobbin 10 and the drive roll 12 is desired, the counterweight 48 may be adjusted to decrease its effective pressure on arm 46, thus under compensating for the bobbin weight increase as it builds up. Therefore, by a combination of the contour of slot 51, counterweight position and size any combination of pressure increase or decrease between bobbin 10 and roll 12 may be effected throughout the build up of a bobbin. While the contour of slot 51 is shown straight it may, when desired, be made any contour necessary to effect the pressure relationship desired between bobbin 10 and roll 12.

The arm 59 is provided with a laterally extending portion 54 which supports a spring toggled latch 55 that is on the pin 56. This latch 55 is provided with a notch 57 that engages the pin 58 when the fully wound yarn package 11 is lifted olf of the drive roll 12 by the lever 19. At this time, the pin 58 engages the notch 57 and rotates the latch 55 on its pivot 56 against the tension of the spring 59 from the position shown in dotted outline in Fig. 12 to the position shown in solid lines. The spring 59 thus'acts as a part of a toggle mechanism and for this purpose one end of this spring is anchored to the arm 50 by the pin 60 and the other end is enchored to the latch 55 by the pin 61. This latch mechanism functions to hold the fully wound yarn package 11 elevated out of contact with the drive roll 12.

Pressure may be applied between the arms 46 and 50 by means of a coil spring 62 positioned on the shaft 47 between the bearing member 49 and the adjustable collar 63 that is held on the shaft 47 by the set-screw 64. Where additional friction is desired between the arms 46 and 50, the spring 62 may be compressed against the bearing member 49 by adjusting the collar 63 closer to this bearing member 49 or by providing a spring having greater tension.

This friction between arms 46 and 50 acts as a snubber to dampen any vibration which may be generated by bobbin 10 rolling on drive roll 12. Various materials may be selected to act as friction plates between arms 46 and 50 depending on the results desired.

in actual operation when an empty yarn bobbin is placed between flanged wheels 21 and 21a and brought into contact with roll 12, arms 46 and 50 are in the position shown in Fig. 11. During the winding process, the thread 12b passes to the guide 12a of the traverse over the stationary rod 120 as shown in Fig. 4 and the guide 12a functions to distribute the thread over the bobbin. In order to accomplish this function the thread guide is attached to the traverse bar 12a which is moved back and forth so that the thread 12b is distributed on the bobbin 10 during the winding operation. As the yarn body builds up the roller 52 proceeds from the extreme outer position in slot 51 to the extreme inner position as shown in Fig. 13. When the roller 52 is in the outer position (Fig. 11) the counterweight 48 has little or no elfect on the pressure between the empty bobbin 10 and the drive roll 12. When the bobbin 10 is full and roller 52 is in position shown in Fig. 13, the counterweight 48 V 6 exerts the maximum pressure on lever arm 46 through the agency of lever 50 and roller 52. This friction developed between lever arms 46 and 50 by the action of spring 62 removes all back lash in the mechanism and, at the same time, dampens out vibration between the yarn body and the drive roll. This prevents the formation of lateral flat areas on the yarn body which, if allowed .to form, cause violent vibration between the yarn body and the drive roll and, in turn, produce an unbalanced yarn body unsuitable for subsequent rotation at high speeds. This is an important feature of this invention where heavy packages of yarn are produced for subsequent high speed rotation.

The variable linkage comprising the arms 46 and 50 that are slidably connected together by means of the roller 52 that is pivoted to the arm 56 by the pin 53, thus functions to control the pressure of the roll 12 against the bobbin 10 so that this pressure is under control throughout the winding cycle during which the thread or yarn is wound on the bobbin 10. As pointed out hereinbefore, the friction between the arm 46 and the arm 50 may be increased or decreased as desired by increasing or decreasing the tension of the spring 62 illustrated in Fig. 9. Furthermore, the spring 62 may also be employed to take the place of the weight 48 and, in this case, one end of the spring may be fixed to the sleeve 64 or to the bar 47 and the other end may be fixed to the sleeve 49 so that this latter sleeve 49 may be rotated on the bar or shaft 47 against the tension of the spring 62.

Other variations may be made in this invention without departing from the spirit and scope thereof and, therefore, I do not desire to limit this invention to the exact details described and illustrated except insofar as those details are set forth in the claims.

What I claim is as follows:

,1. In an apparatus for winding of thread or yarn to form a well-balanced package that may be subsequently rotated at relatively high speeds without damaging vibration, the combination of a freely rotatable take-up bobbin, thread or' yarn traversing means for feeding the thread or yarn to and fro across said bobbin, a roll for driving said bobbin, pivoted means for supporting said bobbin so that said bobbin and the thread or yarn wound thereon ride in contact with said roll, a pivoted weight and a variable linkage connected between said weight and said pivoted means for controlling the pressure of said roll against said bobbin and the thread or yarn wound thereon so that this pressure is under control throughout the winding cycle during which the thread or yarn is wound on said bobbin, and a toggle latch carried by said variable linkage for holding said bobbin out of contact with said roll when it is desired to interrupt the rotation of said bobbin.

2. In an apparatus for winding of thread or yarn to form a well-balanced package that may be subsequently rotated at relatively high speeds without damaging vibration, the combination of a freely rotatable take-up bobbin, thread or yarn traversing means for feeding the thread or yarn to and fro across said bobbin, a roll for driving said bobbin, pivoted means for supporting said bobbin so that said bobbin and the thread or yarn wound thereon ride in contact with said roll, a pivoted weight and a variable linkage connected between said weight and said pivoted means for controlling the pressure of said roll against said bobbin and the thread or yarn wound thereon so that this pressure is under control throughout the winding cycle during which the thread or yarn is wound on said bobbin, said variable linkage comprising a pair of levers, friction means for slidably connecting said levers together and resilient means for controlling said friction means.

3. In an apparatus for winding of thread or yarn to form a well-balanced package that may be subsequently rotated at relatively high speeds without damaging vibrabobbin so that said bobbin and the thread or yarn wound thereon ride in contact with said roll, a pivoted weight and a variable linkage connected between said weight and said pivoted means for controlling the pressure of said roll against said bobbin and the thread or yarn wound thereon so that this pressure is under control throughout the winding cycle during which the thread or yarn is wound on said bobbin, frictional means for connecting the elements of said variable linkage together and a spring for controlling the friction developed in said frictional means.

4. In an apparatus for winding of thread or yarn to form a well-balanced package that may be subsequently rotated at relatively high speeds without damaging vibration, the combination of a freely rotatable take-up bobbin, thread or yarn traversing means for feeding the thread or yarn to and fro across said bobbin, a roll for driving said bobbin, a fixed bar, a U-shaped member, said U-shaped member having a pair of arms for supporting said bobbin so that said bobbin and thread or yarn wound thereon ride in contact with said roll, a pair of slotted bearing members attached to said U-shaped member and supported on said bar in spaced relation, sleeves positioned between said slotted bearing members and said bar, said sleeves being adapted to lock said bearing members on said bar to permit rotation but prevent undesired removal thereof, a pivoted weight and a variable linkage connected between said weight and said U-shaped member for controlling the pressure of said roll against said bobbin and the thread or yarn wound thereon so that this pressure is under control throughout the winding cycle during which the thread or yarn is wound on said bobbin.

5. In an apparatus for winding of thread or yarn to form a well-balanced package that may be subsequently rotated at relatively high speeds without damaging vibra tion, the combination of a freely rotatable take-up bobbin, thread or yarn traversing means for feeding the thread or yarn to and fro across said bobbin, a roll for driving said bobbin, a fixed bar, a U-shaped member, said U-shaped member having a pair of arms for supporting said bobbin so that said bobbin and thread or yarn wound thereon ride in contact with said roll, a pair of slotted bearing members attached to said U-shaped member and supported on said bar in spaced relation, sleeves positioned between said slotted bearing members and said bar, said sleeves being adapted to lock said bearing members on said bar to permit rotation but prevent undesired removal thereof, a pivoted weight, a first arm fixedly attached to one of said slotted bearing members, a second arm connected to said pivoted weight, and means for variably connecting said first arm and said second arm for controlling the pressure of said roll against said bobbin and the thread or yarn wound thereon so that this pressure is under control throughout the winding cycle during which the thread or yarn is wound on said bobbin.

6. In an apparatus for winding of thread or yarn to form a well-balanced package that may be subsequently rotated at relatively high speeds without damaging vibration, the combination of a freely rotatable take-up bobbin, thread or yarn traversing means for feeding the thread or yarn to and fro across said bobbin, a roll for driving said bobbin, a fixed bar, a U-shaped member, said U-shaped member having a pair of arms for supporting said bobbin so that said bobbin and thread or yarn wound thereon ride in contact with said roll, a pair of slotted bearing members attached to spaced parts of said U-shaped member, the slots in said bearing members being wide enough so that said bearing members may be placed on said bar through the slots thereof, sleeves positioned between said slotted bearing members and said bar, each of said sleeves having an outer diameter greater than the width of the slot of the corresponding bearing member to lock said bearing members on said bar to permit rotation of said bearing members but prevent undesired removal thereof, a pivoted weight and a variable linkage connected between said Weight and said U-shapecl member for controlling the pressure of said roll against said bobbin and the thread or yarn wound thereon so that this pressure is under control throughout the winding cycle during which the thread or yarn is wound on said bobbin.

References Cited in the file of this patent UNITED STATES PATENTS 1,458,495 Morrison June 12, 1923 2,150,951 Toole Mar. 21, 1939 2,197,747 Naumann Apr. 16, 1940 2,231,837 Elvin Feb. 11, 1941 2,605,974 Keith Aug. 5, 1952 FOREIGN PATENTS 43 Great Britain Jan. 6, 1868

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