US2587114A

US2587114A - Control device

Info

Publication number: US2587114A
Application number: US65635A
Authority: US
Inventors: Marion P Chapman
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-12-16
Filing date: 1948-12-16
Publication date: 1952-02-26
Anticipated expiration: 1969-02-26

Description

Feb. 26, 1952 M. P. CHAPMAN CONTROL DEVICE 2 SHEETS-SHEET 1 Filed Dec. 16, 1948 Feb. 26, 1952 P. CHAPMAN 2,587,114

CONTROL. DEVICE Filed Dec. 16, 1948 2 SHEETSSHEET 2 INVENTOR MF/R/O/V PCHFIP/Vfl/V NEY Patented Feb. 26, 1952 UNITED STATES PATENT OFF-I CE I CONTROL DEVICE Marion P. ,Chapman,'-l)rayton, S. C.

Application'December 16, 1948, Serial No.'65,635

12 Claims.

. .1 The presentinvention; relates to machines of the typeused in they textile industry'forhandling ryarnunder tensiom-as for example machines-for :winding yarn on to rotating-bobbins or-quills,

and: comprises a novel device for use with-such machines particularly; adapted to compensate for tension changeszin the yarn resulting from normal operation-of. the windingmechanism. The new devicemaybe. employed to reduce the tensionintroducedfinto. the-:yarn at one point inits :travel in: order to :compensatefor tension added "by a part of the machine during one stage of the windingprocess. :Orv the device may beemployed ifdesired, to augment tension changes introduced by a-machine: part. Asl-the new device has been found to haveparticular value foruse-asan attachment to-machines for winding quills for automatic looms, it will be described with specific reference to-such application. It will be understoodjhowever; that the invention in'itsbroadest aspects, is not limited. to the specific embodiment thereof hereinafter described.

- In winding quills'forzusein automatic looms, a length of yarn equivalent to a few picks is first wound on the quill near: one end'thereof. This relatively shortglength of winding on the quill is called a bunch :and automatic quill-winding where the bunch is-tobe wound 1 and which is automatically removed from the yarn path after completion of a predetermined number of traverse motionsofqthe traversing mechanism. This additional guide which-the yarn contacts during the bunch wind causes the yarn to be wound under higher tension during the bunch wind than during the winding of the body of the quill. This tension difierential shows up as a defect in the woven fabric, shiners (yarn under excess ten- ;sion) .appearingin the fabric when the last few picks of a shuttle comprise yarn from the bunch. In the case of very fine yarns, for. examplelOO denier acetate yarn, thi excessive tension introducedinto the yarn during the bunch wind is apt to cause breakage oftheyarn during weaving with resultant large numberoi loom stops. 7

The device of the ,presentinventionremoves this inequality vin winding tension now, inherent in. machines of the above described type by automatically reducing thev tension, in; the yarn.., e-

liveredto .the bunch builder during the bunch .yvind seas. to compensatefor theincrease intension introduced by the additiqnal yarnguide of .thebunch wind. ,Thedevice is positive acting,

of .simple construction and may be readily at- ..tachedJtQ. standard winding machines without .interfer.ence with-,theoperation or with theadiustrnent v thereof.

v .Devices. representing specific embodiments of ,10 the invention areillustrateelinv the accompanying drawings, of which:

,-Fig. 1 .is .a perspective-view of aquilLwinding .machineequipped-:with a tension comp nsating device embodying the invention;

Fig. .2 isa: plan-view, partlyv broken away and on,an enlarged scale, of the tension compensating device of; Fig. 1;

Fig.3 isa sectionalview taken on the line 3..3 .of Fig. 2; e

Kiga i isa-sectionalview like Fig. 3 but showing ,the parts in tension releasing position;

Fig. 5' is.a .plan-.view of themovable guide .of ,the bunch wind mechanism of the machine of .Fig. l showing the operative connection. between .the guide and the tension compensator;

- :Figs. .6 and 'Lareplan and side.vie.ws respectively. of. a tension compensating device representing another embodiment of the *invention; ,and -Fig;-8 is a-view similaretoFig. v5 .-and showing canalternativearrangement-for connecting the munch-guide mechanism with the tension com- Tpensator.

- 1 In. Fig.=1- only somuch of the mechanism of a onventional quill-winding machine is illustrated :as is :necessaryfor an understanding of the new tension-compensator. The machine winds yarn from a,;;cake"2--on to a quill' l. Thercakel-is mounted on ;a suitable platform '6 above which 40 is fixedly-positioned a, bracket-8 carrying porcelain: guides-11 0 and I2 1 and three disk tension devices M, I6'and l8. *The quill 4 is mounted on :a spindle which is rotated by suitable mechanism (not shown in Fig: 1)-- during the winding operae45 g-tion. qThezquill traversing mechanism,.indicated :generallyat-ZB, includes a yarn guide 22=forleadingj-the yarn'tothe quill. The bunch build-mechanism includes a movableguide formed in the shape of a hook, which, during the winding of 50 the hunch. is maintained I in the position indicated; indotted lines i njFig; 1.. 'At the v end of %the bunchwinding. operation,- the -hook- 2 4 :is automatically moved into "the position indicated in -.solid" lines. "Themechanism'for controlling the fl fic qmovementsofithe guide 24 iscontained 'withina housing 25. It has not been illustrated as it forms no part of the present invention and is well known in the art.

The path of the yarn from the cake 2 to the quill 4 is shown in Fig. l as comprising the guide ID, the three tension devices l4, l6 and [8, the guide I2 andtraverse guide 22. From the guide 22, the yarn passes directly to the quill 4 except during the bunch winding operation when the yarn engages the hook 24 after passing through the guide 22.

In accordance with the invention, means are added to the above described winder for automatically reducing the tension introduced into the yarn by the tension disks l6 and I8 during the bunch wind to compensate for the tension introduced at that time'by the interposition of the hook 24 in the yarn flow path. These means include a movable member 28 adapted in one position to engage and lift the upper disks of devices I6 and I8 and a flexible cable 30 interconnecting the member 28 with the hook 24, for movement therewith.

The construction and operation of the member 28 and the means for mounting the same on the bracket 8 will nowbe described with reference to Figs. 2, 3 and 4. Aplate 32, of metal or the like, having a depending flange 34, is secured to the underside of the bracket 8 beneath the tension devices is and IS. The bolts which support the tension disks may conveniently serve as supporting means for the plate 32, thus avoiding the necessity offorming additional holes in the bracket. 8.

Depending from the underside of the plate 32, and integral therewith, are two pairs of oppositely disposed ledges 36 formed by offsetting partially cut sections from the body of the plate 32. The movable member 28 has an elongated plate portion 2811, which is slidable on the led es 36 and an up ardly extending portion 28b terminating in a bifurcated section 280 extending over and parallel to the base portion 28a. The furcations of the portion 280 have lips 38 thereon which, when the member 28 is moved to the right. as viewed in Fig. 3, into the position shown in Fig. 4, engage and lift by wedging action the upper disks of the tension devices I 6 and I8. The part 280. of the member 28 is formed with a downwardly depending tongue 40 which may be a generally rectan ular section cut out from the body of the member along three sides and bent downwardly along the uncut side. One end of a wire 42 is fixedly secured to the tongue 40, as by means of a screw'44 which passes through the tongue 40 and has a diametral hole therethrough for reception of the end of the wire.'and a nut 46 threaded on the screw and locking the wire between it and the tongue. The wire 42. the inner movable member of the flexible cable 36, is connected at its other end (see Fig. to a lug 48 secured to the bunch builder guide 24. The outer sheath of cable 30 is fastened at its upper end to the flange 34 of plate 32 by a clip 51! and at its lower end by a clip 52 to a plate 54 mounted on the end wall of housing 26, flange Y34 and plate 54 each being suitably apertured for reception of the respective end of the cable.

With the above described device, when the guide 24 is moved into the bunch winding position illustrated in dotted lines in Fig. 5, wire 42 is pulled through the cable sheath and moves the member 28 from the position shown in Fig. 3 to that shown in Fig. 4, in which position the upper disks of devices I 6 and. I8 are lifted t relieve the tension in the yarn at that location. At the end of the bunch wind, guide 24 returns to the inoperative position, pushing wire 42 with it and thereby causing member 28 to be returned to its inoperative position. By suitable selection of the weights of the upper disks of the tension devices, l6 and I8, the tension introduced by these devices when the member 28 is in the inoperative position of Fig. 3 may be made substantially equal to that introduced by the bunch guide 24 with consequent substantially constant tension throughout the entire winding process.

By changing the weight of the upper disk of device M the tension level during the winding operation may be adjusted as desired.

An alternative arrangement for lifting the upper disks of the tension devices l6 and I8 during bunch wind is illustrated in Figs. 6 and 7. In this embodiment of the invention the movable wire 42 of the cable 30 is connected to the short arm 56a of a two armed lever 56. The lever 56 is pivotally mounted on a stud 58 threaded into the support frame 80,. The long arm of the lever 56 carries at its end a bar 60 which, when the lever is rocked on its pivot into the position indicated in dotted lines in Fig. 6, engages and lifts the upper disks of the tension devices l6 and I8. Both arms of the lever 56 and the bar 60 may be conveniently formed of a single piece of round stock, the pivotal mounting being effected by forming a coil in the stock for accommodation of the stud 58. The long arm of the lever 58 includes a horizontal stretch 56b which extends from the coil surrounding the stud 58 along and to one side of the frame 8a to a point in the neighborhood of the tension devices l6 and I8, a short downwardly extending stretch 560 at the end of the stretch 56b, a horizontal arcuate section 56d which passes under the frame 80, an upwardly extending portion 56c and a short horizontal section 56 connecting the section 568 with a straight section comprising the bar 60. Mounted beneath the frame 8a on the lower end of the post 62 supporting the tension disks I6 is a support and guide 64 for the arcuate stretch 56d of the lever. The guide 64 may be conveniently formed, like the lever 56, of round stock and bent to provide an open ended slot 66 for passage of the section 56d therethrough.

The frame 8a, at the end thereof near the stud 58, has a block 68 formed integral therewith which is provided with a horizontal passage for reception of the upper end of the cable 30. A screw 10, threaded into the block 68 and engaging the sheath of the cable serves to anchor the cable in the block. The end of arm 56a has a ring shaped member 12 secured thereto as by brazing, and the end of the movable wire 42 of the cable is secured to the member 12 by means of a set screw 14. Preferably, to insure positive action of the device at termination of the bunch wind a compressionspring 16 is provided about the wire 42 with its ends abutting the member 12 and block 68.

The operation of the device of Figs. 6 and '7 will be clear from that already given in connection with the embodiment of the invention illustrated in Figs. 1 to 5. During bunch wind, the wire 42 pulls on the arm 56a. to rock the lever 56 in a counter clockwise direction, as viewed in Fig. 6, into position to engage and lift the upper disks of the tension devices 16 and I8. Upon completion of the bunch wind, the push of the wire 42,

assisted by the spring 16 when such is provided, returns the lever to the full line position of Fig. 6.

The connection of the lower end 01 the wire 42 to the bunch wind mechanism may be directly to the bunch guide, as shown in Fig. 5, or the wire may be connected within the casing 26 as shown in Fig. 8 to the end of an arm 78 of the bunch build mechanism which moves with the bunch guide 24.

With this type of connection the length of the guide 24 may be adjusted without interference from the cable connection. The end wall 30 of the housing 26 is suitably apertured for admission of the end of the wire 42 and a collar 82 is brazed to the wall 80 adjacent the aperture for reception of the end of the cable 30. A set screw 84 threaded through the wall of the collar 82, engages the sheath of the cable and anchors the same in the collar.

It will be understood, of course, that the particular connection of the cable to the bunch wind mechanism shown in Fig. 8 could be em- :ployed with either the construction of release device illustrated in Figs. 2 through 4 or that illustrated in Figs. 6 and '7, as desired.

The invention has now been described with reference to two specific embodiments thereof. Obviously various changes in the specific constructions illustrated in the drawings could be made without departing from the spirit of the invention as defined in the appended claims and the new device could be advantageously employed with machines other than that specifically described.

The following is claimed:

1. The combination with a quill winding machine having bunch builder mechanism including a part which has a normally inactive position and a second position which it assumes only during bunch wind and equipped with at least two disk type pretensioning devices, of a movable member adapted in one position to separate the disks of at least one of said devices, and means coupling said member and said part of the bunch builder mechanism for movement of said member into and out of disk separating position with movement of said part into and out of said second position.

2. The combination according to claim 1 wherein the part of the bunch builder mechanism is a movable bunch guide and wherein said last mentioned means connects said member with said guide for movement therewith.

3. The combination according to claim 2 wherein the machine is equipped with three pretension devices each including a pair of disks and wherein said member during bunch wind separates the disks of two of said devices, whereby said member operates substantially to compensate for tension introduced into the yarn by the bunch guide during bunch wind.

4. The combination according to claim 1 wherein said movable member comprises a pivotally mounted two arm lever, said last mentioned means being connected to one arm of said member, the other arm of said member serving in said one position to separate the tension disks.

5. The combination according to claim 1 wherein the bunch builder mechanism includes a movable bunch guide and said part is connected thereto and is movable therewith.

6. The combination according to claim 1 wherein the last mentioned means comprises a flexible tubular sheath enclosing a movable wire, one end of said wire being connected to said member and the other end of said wire being connected to said part.

'7. The combination according to claim 6 including means biasing said member out of disk separating position.

8. The combination according to claim 6 wherein said part is the bunch guide.

9. The combination with a quill winding machine having bunch builder mechanism and equipped with disk type pretensioning means of a movable member, means supporting said member adjacent said pretensioning means, means integral with said member and adapted in one position of said member to engage and separate the disks of the pretensioning means, and means mechanically coupling said member and a movable part of the bunch builder mechanism for moving said member into disk separating position during bunch wind.

10. The combination according to claim 9 including means normally biasing said member out of disk separating position.

11. The combination according to claim 9 wherein said member comprises a pivotally mounted lever having arms of unequal length, said coupling means being secured to the end of the shorter arm of said member and the longer arm of said member being shaped adjacent its end to engage and separate the disks of the pretensioning means when the lever is rotated about its pivot into said one position by said coupling means.

12. The combination with a quill winding machine equipped with disc type pretensioning means of a movable member, means supporting said member adjacent said pretensioningmeans, means integral with said member and adapted in one position of said member to engage and separate the discs of the pretensioning means, and means comprising a movable wire enclosed in a flexible tubular sheath mechanically coupling said member and a movable part of the quill winding machine for moving said member into said one position at one stage of the winding operation.

MARION P. CHAPMAN.

REFERENCES CITED The following references are of record in the I file of this patent:

UNITED STATES PATENTS Number I Name Date 1,790,553 Peterson Jan. 27, 1931 1,935,524 Schweiter Nov; 14, 1933 1,967,211 Myers July 1'7, 1934 2,236,459 Swanson Mar. 25, 1941 FOREIGN PATENTS Number Country Date 398,884 Great Britain Sept. 25, 1933