US1622007A - Machine for winding yarn - Google Patents

Description

March 22 1927- N 1,622,007 R. G. SHARPLES ET AL MACHINE FOR WINDING YARN Filed June 26. 1925 2-Sheets -Sheet1 I a e Ilia mum March 22 1927. 1,622,001

' R. G. SHARPLES ET AL MACHINE FOR WINDING YARN Filed June 26. 1925 2 Sheets-Sheetz in y n tor- 61 czmfinawzaw Patented Mar. 22, 1927.

UNITED s'ra'rss 1,622,001 PATENT OFFICE.

RICHARD GREENHALGH SI-IARPLES, OF RADCLIFFE, MANCHESTER, AND CHARLES WILBRAI-IAM, CF WORSLEY, MANCHESTER, ENGLAND.

MACHINE FOR WINDING YARN.

Application filed June 26,1925, Serial N 0. 39,690, and in Great Britain July 1, 1924.

This invention has reference to yarn winding machines, of the kind known as warp pirning machines and warp winding machines.

In warp pirning and warp winding ma chines as at present arranged, the spindles carrying the pirns or bobbins have a variable frictional drive and the yarn is generally positively fed or delivered to the spindles at a constant speed by means of feed or delivery rollers which are positively driven. then the yarn is being wound at the upper ends or tips of the chases on the pirns or .7 the yarn is being wound at the lower parts or bottoms of the chases its pull acts at a maximum radius and exerts a maximum resistance to the rotation of the spindles which now rotate at a minimum s eed and although a maximum quantity of yarn is wound at each rotation, the yarn is nevertheless wound much slacker than at the topv of the chase.

The object of this invention is to provide an improved driving arrangement for the feed or delivery rollers, whereby the yarn will be more securely and uniformly wound,

breakages of the yarn will be reduced to a minimum, weaker yarns may be wound than ordinarily and a bobbin or pirn of given size will contain more yarn than ordinarily.

The invention resides essentially in driving the feed ordelivery rollers through automatically variable means which will permit of slip or relative movement occurring at times between the feed or delivery rollers and the shaft or the like from which they are driven, and preferably the arrangement is such that said variable means can drive the feed or delivery rollers only with the assistance of the spindles pulling on the yarn. V V

In the accompanying drawings Figs 1 and 2 are elevations at right angles to each other, Fig. 2 being partly insection, of one driving arrangement in accordance with the invention, and Figs. 3 and 4 are end and front elevations, respectively, of a warp pirning machineembodying a modified driving arrangement, only so much of the machine being illustrated as is necessary for the purpose of elucidation. In the drawings and the following description like numerals of reference refer to like parts.

Referring first to Figs. 1 and 2 of the drawings, 5, 6 and 7 are the feed rollers which feed the yarn, indicated at m, to the spindles, one of which is shown at 8 in Fig. 3. From the roller 7 the yarnis led to the pirns or bobbins on the spindles 8 by means of guides carried by a vertically reciprocating and progressively rising frame (not shown) in the usual way- The roller 5 is driven from the shaft 9 andis geared with and drives the roller 7 while the roller 6 rests upon the rollers 5, 7 and is frictionally driven by same. Instead of the roller 5 being positively driven from the shaft 9 as ordinarily, it is driven from the shaft through a friction clutch 10. v This friction clutch comprises two sprocket wheels 11, 12, mounted on a common fixed axle 13 with an intervening friction disc 14. The wheel 11 is positively driven from the shaft 9 by a chain 15 and the wheel 12 is driven by friction from the wheel 11 through the medium of the disc 14 and drives the roller 5 by means of a chain 16. The frictional engagement between the wheels 11, 12 and the friction disc 14 is regulated'as required by means of a nut 17 on the axle 13 and a spiral spring 18 arranged on the axle between the nut and a ball thrust ring 19 mounted next the boss of the wheel 11. A. ball thrust ring 20 is mounted between the bossof the wheel 11 and the enlarged end of the axle 13. The friction discv 14 may consist of a disc of felt or, and preferably, a disc of wood lined on each side with felt. Any other appropriate frictional disc may, however, be substituted- In operation, the frictional engagement between the sprocket wheels 11, 12 and the intervening friction disc 14 is adjusted so that such engagement is insufficient to drive the sprocket wheel 12 and the feed or delivery rollers, 5, 6, 7 without the assistance of the spindles pulling on the yarn. If the tension of the spring 18 is adjustedso that or m the sprocket wheels 11, 12 rotate together as one and the yarn is properly fed or delivered when it is being wound at the bottom ot'the chases and the pull of the spindle is a minimum, the sprocket wheel 12 will, when the yarn is being wound at the top of the chases and the pull of the spindles is a maximum, slip relatively to or over-run the wheel 11, thus allowing the yarn to be drawn through the feed or delivery rollers 5, 6' and 7 under the increased pull of the spindles and preventing the yarn from being broken by excessive tension. If, on the other hand, the tension of the spring 1'8 is so adjusted that the sprocket wheels 11, 1 2 rotate together as one and the yarn is properly ied or delivered when it is winding at the top of the chases and the pull of the spindles is a maximum, the wheel 11 will slip relatively to or over-run the wheel 12 when the yarn is winding at the bottom of the chases and the pull of the spindles is a minimum- With the spring adjusted so that the wheels 11, 12 rotate together as one and the yarn is properly ied or delivered When it is winding at an intermediate point in the chase, the wheel 12 will slip when the yarn winds higher up the chase and the pull of the spindles increases, and the wheel 11 will slip when the yarn winds lower down the chase and the pull of the spindles decreases.

In a modified arrangement of drive shown in Figs. 3 and a the tension of the spring 18 of the friction clutch 10 is automatically varied during the rise' and fall ofthe vertically reciprocating frame which carries the yarn guides, and the traverse of the yarn up and down the chases of the pirns on the spindles 8. This is accomplished by means of a lever 21, having its upper end" pivoted in a block 22'adjustably mounted on a stud arm 28 projecting from the end frame of the machine, and having. its lower end connocted by means of a chain 24, passing over a pulley 25, with the builder lever 26, which is depressed in the usual way by means of a cam to lower the guide frame. Intermediate of its ends the lever 21 is formed with a slot 27 to enable it to clear the axle 13 of the sprocket wheels 11, 12 and bear against the spring 18. It will be apparent that when the builder lever 26 is depressed to lower the guides the chain 24 will pull the lower end of the lever 21 towards the frame of the machine and such lever bearing against the spring 18 will increase the tension of the spring, and that when the builder lever 26 rises the chain 24 will release the pull on the lever 21 and the latter will relieve the tension of the spring 18. Accordingly, there will be no, or a minimum, slip between the sprocket wheels when the yarn is winding at the lower part of the chase and the pull of the spindle is a minimum,

while as the yarn rides up the chase and the pull of the spindles increases the wheel 12- can slip or over-run the wheel 11 to an increasing extent to allow the spindles to pull the yarn through the delivery rollers.

The range ofthe automatic variation QTE the tension of the spring 18 by the lever 21 can be adjusted as required by adjusting the position of the block 22 on the stud arm 23 and/or by adjusting the length of the chain 24:.

What we clainr as our invention and desire to secure by Letters Patent is 1. In a yarn" winding machine, yarn delivery rollers, driving means for said rollers, and means torpermitting relative slip be tween said rollers andsaid driving means during the operation of the'machine.

2. In a yarn winding machine, yarn deliveryrollers, drivin'g'means forsaid rollers, and means for automatically permitting relative slip between said rollers and said drivin}; means during the operation of the machine.

3. In a' yarn winding machine, yarn delivery rollers, driving means for said rollers, and means for intermittently permitting said rollers to be rotated at a greater speed than normally driven by said driving means.

46. In a yarn winding machine, yarn delivery rollers, driving means for said rollers, and means interposed between said rollers and said driving means adapted to limit the effective driving torque of said driving means upon said rollers.

5. In a yarn winding machine, yarn delivery rollers, driving'mea'ns torsaid rollers, and means interposed between said rollers and said driving means adapted to automatically vary the effective driving torque of said driving meansupon said rollers.

6. In ajya rn winding machine, yarn delivery rollers, drivingmeans for said rollers, and means interposed between said rollers and said drivingmeans adapted to automaticallyv-ary the effective driving torque of said driving means upon said rollers, comprising a clutcli, one member of which is operably connected to the rollers and the other member of which is connected to the driving means.

7. In a yarn winding machine, yarn delivery rollers, driving means for'said rollers, and means interposed between said rollers and said'driving means adapted to automatically vary the effective driving torque of said driving means upon said rollers, comprising a clutch, one member of which is operably connected to the rollers and the other member of which is connected to the driving i'neans, and an adjustable friction element between said clutch members.

8. In a yarn winding machine, yarn deliveryroll'ers, dr'i'ving' means for said rollers, and means interposed between the rollers and said driving means adapted to limit the effective driving torque of said driving nmtieally varying the effectiveness of said means upon said rollers, comprising a clutch, friction element.

one member of which is operably connected In witness whereof We have hereunto set 10 to the rollers, and another member of which our hands.

'5 is connected to the driving means, and an adjustable friction element positioned be- RICHARD ENHAL H HARPLES. tween said members, and means for auto- E W BRAHAM-

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