US1969593A - Bunch building mechanism - Google Patents

Description

8- 1934- H. o. DAVIDSON 1,969,593

I BUNCH BI JILDING MECHANISM Filed Jan. 12, 1933 l 'wl" lllIlIl:

INVENTOR HOBART a DAVIDSON BY'HIS ATTORNEYS Patented Aug. 7, 1934 BUNCH BUILDING MECHANISM Hobart 0. Davidson, Meadville, Pa., assignor to The Viscose Company, Marcus Hook, Pa., a corporation of Pennsylvania Application January 12, 1933, Serial No. 651,395

19 Claims.

This invention relates to bunch building mechanisms in apparatus for winding threads on quills, and has for its main object to provide mechanism of this character adapted to build a flat bunch of uniform thickness at the base of the quill.

Other objects will be apparent from the following description in conjunction with the accompanying drawing, in which Figure 1 is a perspective view of a preferred 1o embodiment of the invention, and

Figure 2 is a plan of the same.

The winding machine comprises a frame 4 housing driving means for rotating a quill 5, and for driving a traverse rod 6 havin'g an associated traverse wheel '7 and cop former 8. A portion of the frame 4 carries a bunch builder mechanism including an arm 9 pivoted on a stationary part of the mechanism. This mechanism includes a ratchetlO, ratchet pawl '11, ratchet feed pawl 12, and ratchet feed pawl arm 13, details of which parts are more fully described in Quill Patent No. 1,809,217 of June 9th, 1931.

A bracket 14 is carried by the traverse rod, the form shown having a flange 15 which is secured to a suitable part of the structure mounted on the traverse rod, such as the thread guide holder 16. This bracket 14 extends vertically upward, preferably parallel to the axis of the quill 5.

At the, upper end of the bracket 14 is mounted a thread guide element, preferably a roller 1'7 rotatable on a pin 18. A link 19 is pivoted on the pin 18 and depends therefrom. This link has an car 20 in which is threaded an adjusting screw 21 engaging the bracket 14 to limit the pivotal movement of the link 19 in the direction toward the bracket 14. p

A second thread guide element, preferably a roller 22 is rotatably mounted on a pin 23 secured o to the lower end of the link 19. The thread being wound on the quill 5 passes in succession over the rollers 1'7 and 22 on to the quill 5.

Associated with the bunch builder mechanism is a bracket 24 which has a flange 25 secured to the arm 9 which is pivoted on part of the mechanism. This bracket in the position shown extends vertically upward parallel to the axis of the quill 5. A slot 26 is formed in the upper part of the bracket 24, through which passes a pin 2'7 adjustably secured therein. A hook 28 is pivoted on this pin 27. The hook 28 has a slot 29 adapted to receive the projecting end 30 of the pivot pin 23 for the second roller.

To begin operation, the bracket 14 is pushed back to the extreme position on the traverse rod 6, and the hook 28 is fitted over the projecting end 30. Then the power for the machine is turned on, to start the winding on the quill 5. The bracket 14 moves with the rod 6, so that its traverse is the normal stroke of the machine, and the upper or first roller 17 has the same traverse.

The lower or second roller 22 however, is held back by the extension 30 in the slot 29, the link 19 swinging out as the bracket 14 moves. The traverse of the second roller is thereby made shorter, as its position is determined by an are about the stationary pin 2'7. The combined motion, due to the traverse of the bracket 14 and the confining action of the hook 28, resulting in a toggle action of the hook and the link 19, is such that the thread is wound uniformly at the base of the quill 5 for the desired length.

When the required number of strokes has been made, the action of the ratchet 10, ratchet pawl 11, ratchet feed pawl 12, and ratchet feed. pawl arm 13 releases a catch holding the-arm 9 in'position. The spring tension which was applied to the arm 9 when it was first moved into position causes the arm 9 to move outwardly. Thus the bunch builder mechanism throws the arm 9 out-. wardly, away from the bracket 14, causing the slot 29 to ride off the end of the extension 30, thus releasing the same; The link 19 is held against the bracket 14 by the tension of the thread 5 running on the quill, the screw 21 serving to posi: tion the second or lower roller 22'relative to the bracket 14. The yarn is then wound on the quill according to the regular traverse, and the operation from this point on is governed by the cop former.

It should be noted that with this arrangement the running end is guided in the same guides during the bunch building operation as during the balance of the winding operation on the quill.

The length of the bunch to be formed is determined by the position of the pin 2'7, as adjusted in the slot 26. Moving the pin 27 toward the bracket 14 adjusts the mechanism toincrease the length of the bunch, while adjustment in the opposite direction shortens the bunch.

The screw 21 is of advantage in locating the correct position of the; heel on the quill. This screw moves the link 19 with respect to the bracket 14 to adjust the position of'the lower roller 22,,so that the position of the heel may be moved either forward or backward within the limits allowed.

I claim:

1. In apparatus for winding threads, a thread guide for leading the thread on to a quill, comprising a reciprocating member, a guide element,

means for normally giving said guide element the same travel as said reciprocating member, and means cooperating with said guide element for giving it a shorter travel than that of said member. A

2. In apparatus for winding threads; a reciprocating thread guide for leading the thread on to a quill, comprising two spaced elements over which the thread passes at all times, and means coopererating with one element for giving it a shorter travel than the other.

3. In apparatus for winding threads, a thread guide for leading the thread on to a quill, comprising two connected rollers over which the thread passes in succession, and means for reciprocating said rollers to give them different travels.

4. In a winding machine, in combination witha traverse rod and a bunch'building mechanism, a thread guide, and toggle means non-slidably pivotedto said traverse rod and said bunch building mechanism for restraining and controlling the motion of said thread guide,

5. In a winding machine, a reciprocating member, an oscillating member having a path transverse to the path of said reciprocating member, a thread guide carried by said reciprocating member over which the thread passes on to a quill, and means having the same travel as said reciprocating member when said oscillating member is away therefrom and at all times engaging the thread between said guide and said quill and having its travel shortened by engagement with said oscillating member for causing the winding machine to build a short bunch.

6. In a winding machine, in combination with a traverse rod and an arm pivoted ona stationary part of the machine, a thread guide carried by said traverse rod, a second thread guide over which the thread passes from the first, and means carried by said arm and cooperating with said second thread guide for causing the winding machine to wind a short bunch, said means being guide to travel with the first.

actuated by said arm to release said second thread 7. In a winding machine, in combination with a traverse rod and a bunch building mechanism, a thread guide roller, means carried by said traverse rod for supporting the journal of said roller, and means actuated by said bunch building mechanism and engaging the journal'of said roller for causing the winding machine to wind a short bunch.

8. In a winding machine, in combination with a traverse rod and a bunch building mechanism having an arm, a thread guide roller, means carried by said traverse rod for supporting said thread guide roller, a second thread guide roller, and cooperating means carried by said supporting means and said arm for supporting and controlling said second thread guide roller to cause the winding machine to build a short bunch.

9. In a winding machine, a. traverse rod, a

bracket carried by said rod, a roller on said bracket, a link pivoted on the journal of..said

roller to swing in one direction, a second roller journaled on said link, and means for limiting the movement of the link in the other direction.

10. In a winding machine, a traverse rod, a bracket carried by said rod, a rolleron said an arm, a link having a roller pivoted thereon, means for pivotally supporting said link from" said traverse rcd', a hook engaging an abutment on said link, and means for pivotally supporting said hook from said arm.

12. In a winding machine provided with a frame and a traverse rod, a link having an abutment, a roller pivoted on said link, means for pivotally supporting said link from said traverse rod, an arm pivoted on said frame, and a hook pivoted on said arm and engaging said abutment.

13. In apparatus for winding threads, a reciprocating member, a thread guide carried thereby for leading, the running end of the thread on to a quill during all of the Winding thereof, and means cooperating with said guide for giving said running end a shorter travel than said member for building a bunch. i

14. An apparatus for winding threads, a traverse rod, a thread guide for leading the thread on to a quill, means cooperating with said thread guide forgiving the thread a shorter travel than said rod to build a bunch on said quill, and means for releasing said means whereby the same thread guide gives the running end the same travel as said traverse rod for the balance of the winding operation on said quill.

15. In a winding machine, a traverse rod, a thread guide carried by said traverse rod comprising two guide elements over which the thread passes at all times, in combination with a hook cooperating with the second thread guide for causing the winding machine to build a short bunch.

16. In a winding machine, a traverse rod, a link pivotally carried by said rod, a pair of spaced guide rollers on said link, over which the thread passes on to a quill, and means for retarding one end of said link to shorten the travel of one of said rollers and thereby cause the winding machine to build a short bunch.

17. In a winding machine, a pair of guides in engagement with the thread at all times during the winding operation, and means cooperating with one of said guides for causing the winding machine to wind a short bunch.

18. In a winding machine, in combination with a traverse rod and a bunch building mechanism,

a link pivotally carried by said traverse rod, a'

thread guide on said link spaced from the pivot thereof, and means actuated by said bunch building mechanism for moving said link about its pivot and thereby moving said guide thereon in an arc of a circle about said pivot.

19. In a winding machine, a thread guide, a traverse rod, means for normally giving said thread guide a rectilinear movement with said traverse rod, bunch building mechanism, and means actuated thereby for giving said guide a shorter travel than said traverse.rod,- said lastmentioned means including an adjustment for determining the length of the bunch.

' HOBART O. DAVIDSON.

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