US1912523A - Lock for revocable transfer mechanism - Google Patents

Description

2 Sheets-Sheet 1 A. A. GORDON Filed Sept. 1, 193],

W222 $567?! 4. 60/7300? fWF-ZM N I 1.. Ml J ID LOCK FOR REVOCABLE TRANSFER MECHANISM June s, 1933.

0 z "A 0 ma Im- #7 June 6, 1933.

A. A. GORDON LOOK FOR REVOCABLE TRANSFER MECHANISM Filed Sept. 1, 1931 ZSheets-Sheet 2 Patented June 6, 1933 UNITED" STATES- PATENT OFFICE ALBERT A. G RDON, or woaonsrnn, MAssAoi-icsnrrs, Assrenon T0 CROMPTOH & KNOWLES LOOM W RKS, on WORCESTER, MASSACHUSETTS, A CORPORATION OF MAssAcnUsEr'rs oci; non nnvoo BLn TRANSFER MECHANISM Application filed September 1, 1931. Serial no. 560,595.

This invention relates to improvements in revokin mechanismfor weft re lenishing looms and it is the general object of the invention to provide for positively revoking a previously indicated transfer without interferring with the restoration of the magazine to normal condition by locking the transferrer arm in down or transferring .position.

Inmulticolor weft replenishinglooms the shuttle feeler and lay engaging latch 011 the transferrer arm are connected together, usually by means of a top horizontal shaft, so that when the transferrer'is indicated the latch will be raised and the shuttle feeler simultaneously depressed to engage a misplaced shuttle. If the shuttle is not properly boxed it will lift the shuttle feeler the effect ofwhich is to lower the latch, so that the latter cannot have engagement with the hunter on the'lay, thus preventing transfer. It has been customary in the past to rely upon gravity to lower the latcln'but in fast running looms it is found that the latch does not have time to fall out of the hunter.

hen a positive control is introduced between the shuttle feeler andthe latch to afford means for lowering the latter quickly, some provision must be made for permitting the return of the magazine to normal condition. In this connection it is to be understood that if a transfer takes place in proper manner the shuttle feeler willact to restorethe magazine to its original un'setcondition, From this it will be seen that both the positive depression of the latch and the resetting of the. magazine are accomplished through thesa-me device which eifects these two results by operating at two different times v .1

When the lay reaches front center on a transferringbeat the act of transfer is, completed and the magazine parts are all reset back to normalwith a single exception of the transfermechanism. This is. due to the fact that the latch is engaged with the hunter and must maintain this engagement ordi narily until the lay move s back sufficiently to permit the transferrer arm to be reset. I It is an important object of. my present in 5Q vention to providemea-ns for locking the.

path of the transferrer arm in down position at the completion of a transfer operation so that the latch will be held in relative forward position as the lay starts to move rearwardly. In this way thepositive connection between the latch and the shuttle feeler will not be subject to any force acting to give the shuttle feeler anpther setting on the backward stroke of the In the usual operation of the transferrer arm it will reach aposition low enough to traverse the path of some partof the lay, and it is a further object of my invention to provide means for locking the transferrer at a point a short distance above its lowest position so as to avoid interference with any part of the lay.

The particular means for unlocking the transferrer arm as set forth herein includes a trip to be struck by the lay as the latter reaches its first rear position after transfer. In this connection it is a further object of my invention not only to effect release of the look by the lay, but also to give the lock an addi- I tional movement derived from the transferrer invention in normal position and viewed from the interior of the loom, certain parts being in section,

Fig. 2 is a view similar to Fig. 1 but with the parts shown in transfer position,

. Fig. 3 is an enlarged front elevation taken in the direction of arrow 3, Fig. 2,

Fig. t is a horizontal. section on line 44 of Fig. 1, and

5 is a vertical section on line 55 of F at.

' Referring to the drawings, I have shown a four-cell stationary magazine of the usual type and designated at M. The magazine has a foot 10 which rests on the breast beam 11 of the loom and has a plate 12 from which extend a plurality of vertical parallel flanges 13 defining four reserve bobbin compartments 14.

A fixed stud 15 has pivotally mounted thereon a transferrer lever 16 having a horizontal arm 17 and vertical arm 18. The latter has pivotal connection as at 19 with a latch holder 20 to which is secured a latch 21. The latter is adapted to engage a hunter 22 on the lay L in the usual manner.

A shuttle feeler 23 is pivoted above the lay as at 24 to a rear fixed part of the magazine frame and has connection as at 25 with an upwardly extending control or connector rod 26. The connector rod 26 is attached at the upper end thereof to a rocking lever 27 which oscillates about an axis deter-mined by bearings 28 formed as a fixed part of the magazine frame. This lever comprises a right hand element 29 as viewed in Fig. 1 which is secured to a horizontal shaft '30 turning in the bearings, while the rear or left hand part of the lever includes an element 31 also secured to the shaft. A second vertical control rod 32 is attached at the element 31' and acts when the lever 27 is oscillated on a working stroke to move downwardly and have connection at the lower end thereof with the latch holder 20 to elevate the latch.

The matter thus far described is substantially the same as shown in Patents No. 1,030,- 748 and No. 1,786,688. Certain mechanism has been omitted for the sake of clearness, but it is to be understood that the magazine, except as pointed out hereinafter, is of the usual multicolor type and acts to deliver a bobbin of selected color to be inserted in the shuttle S when exhaustion is indicated. Preparatory to transfer the lever 27 will be oscilla ted by mechanism not shown but well understood to lower the rod 26 and thereby move the shuttle feeler 23 downwardly where it may engage a misplaced shuttle to revoke transfer, or to engage the box back B to reset the magazine. At the same time the shuttle feeler is depressed the latch 21 will be raised through connections to be described more particularly hereinafter, but operating at substantially the same time in the cycle of the loom as that existing in present magazines.

As previously stated, my invention relates to means for positively revoking a previously indicated transfer should the shuttle fail to be properly boxed, and in carrying my invention into effect I provide the latch holder 20 as shown in Figs. 1 and 2 with a forward extension 40 defining a short slot 41. Extending upwardly from the slot and forwardly is an inclined finger 12 the lower edge of which merges with the upper part of the slot 41. A stud 43 extends into the slot and is carried by a rod head 14 formed on the lower end of the rod 32. The stud 43 is adapted for engagement with the extension 10 and the walls of the slot ll and also the lower surface of the finger 42.

One of the tie rods of the magazine has pivoted thereto a lock lever 51 having a shoulder or notch 52 which is positioned to engage an upper relatively sharp corneror edge 53 of the transferrer arm. As shown in Fig. 1, a light torsion spring 5& is connected at one end to a collar 55'fixed to the tie rod and at the other end to the lock acting to move the latter in a clockwise direction as viewed in Fig. 2 so as tourge the notch or shoulder 52 in a direction toward the transferrer arm. A stop pin56 serves to arrest movement of the lever 51 around the tie rod. A rearwardly extending wire 57 is threaded into the lock lever to'be adjustable relatively thereto-and has the rear end bent downwardly as at 58 tohave engagement with the box back B.

The front of lever 51 is provided with an inclined cam face 60 positioned and formed was to engage a corresponding face 61 on the trans'ferrer arm when the latter is in raised position. A relatively heavy torsion spring 62 of'the usual form acts in well-known manner toholdthetransferrer arm yieldingly in the raised position indicated in Fig. 1. This heavy spring 62 is of sufiicient strength to overcomethe light spring 54 and holdsth'e lock lever as shown in Fig. 1 with the bent end 58 of the wire 57 disposed slightly behind'the rearmost'position'of thebox back '13.

In operation, so long as sufficient weft'in the'running'shuttle is present, the parts will remain in thep'osition shown in Fig. 1, the lay moving back and forth under the magazine. When an exhausted shuttle which has previously given indication of weft exhaustion is under the magazine, mechanism not shown but'well understood will come into play to oscillate thelever27 in such a direction as todepress'the shuttle feeler 23 and raise the latch 21. These operations take place when the lay is in a relatively rearward position. As the 'lay advances one of two conditions willresult, eithertransfer'will take place in the-normal manner, or the indicated transfer will berevoked and prevented.

If a normal transfer takes place the shuttle will be boxed sufficiently to clear the shuttle feeler and the hunter will engage the latch 21 to move the latter forwardly. As the lay continues its advance the slot 11 will move forwardly with respect to the pin 43 until the parts assume the position shown in Fig. 2. As the lay'reaches its extreme forward position the box back B will engage the shuttle feeler to raise the latter and this will result in the simultaneous lifting of stud 43. The inclined finger 42, however, has by this time moved far enough forwardly so that it will not interfere with the upward movement of said stud, and the top lever 27 may be reset to its normal position.

As soon as the transferrer arm nears its lowest position surface 61 will move away from surface 60 and the corner 53 will pass under the notch or shoulder 52, thereby freeing the lock lever 51 to permit the same to respond to the force of spring 5a and move in such a direction as to place the shoulder 52 over the edge 53. This movement on the part of lever 51 also advances the bent end 58 into the path of movement of the box back B.

As the lay starts its rearward movement the latch will be held in contact with the bunter by the spring 62 for a short distance, and the upward movement of the transferrer arm incident to the rearward movement of the lay will bring about engagement of the edge 53 with the shoulder or notch of the lock lever, whereupon the transferrer arm will be locked against further upward movement. The extent of upward movement of the transferrer arm before being locked can be varied by changing the position of the notch or shoulder 52, but in any event the lower part of the transferrer arm will be held high enough to clear the lay as the latter moves rearwardly.

It is common practice in the looms to which my invention more particularly applies to have the latch released by the hunter when the lay has moved approximately one-quarter of its distance from front to back position, so that when the lay has moved back approximately one and one-half inches the latch 21 will be free to move down around pivot 19 as a center. By inspecting the relation of the parts shown in Fig. 2 it will be seen that the inclined finger 42 can move around the pivot pin '19 without engaging the stud 43. The purpose of this relation is to permit the latch to fall to its low position without interferring with or communicating force to the oscillating lever 27. The latch therefore drops by gravity without disturbing the shuttle feeler 23 or lever 27 In connection with the relations just described it is of consequence to notice that the lay moves a considerable distance after releasing the latch before the box back B engages the bent end 58, of the wire 57. As the lay reaches its extreme rearward position, however, the wire will be struck to rock the lock lever 51 slightly about its tie rod superly boxed, the shuttel feeler 23 will be raised in the usuallnanner by engagement with the and the transferrer latch is moved to clear the hunter at the time of revocation is proportional to the speed of the loom, that is, the quicker the loom runs the quicker it will revoke.

From the foregoing it will be seen that I have provided means for positively revoking a previously indicated transfer of a multicolor weft replenishing mechanism without interferring with the normal transfer. It will also be seen that the result just described is achieved by locking the transferrer arm in down position a sufiicient length of time to permit the lay to move out of controlling relation with respect to the transferrer latch. As a matter of convenience the latch is released by the lay when the latter is in a relatively forward position, while the transferrer arm is not released or unlocked until the lay is in its rearwardposition. It is also seen that the transferrer arm acts when in its up or raised position to hold the bent end 58 of the wire out of the path of the lay.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a weft replenishing loom having a lay and a shuttel feeler, a transferrer meched to the shuttle feeler during forward movement of the lay until the latter advances to a given position and to be disconnected from said shuttlefeeler during the remainder of the forward motion of the lay, engagement of the lay with the latch effecting transfer, and

means operative on a transferring pick to disconnect the latch from the lay before the latter reaches the said given position in the backward movement thereof.

2. In a weft replenishing loom having a lay and a shuttle feeler, transfer mechanism having a latch to be operatively related to the shuttle feeler before the lay reaches a given position in its forward motion and to be disconnected from the shuttle feeler after the lay passes said position in its forward motion, the latch to engage the lay to effect the transferring operation, and means operative after the completion of a transferring operation to prevent the latch from following the lay as the latter moves away from the transfer position.

3. In a weft replenishing loom having a anism having a latch to be operatively relatlay and ashuttle feeler,-transfer mechanism havingalatch tobe operatively relatedito the shuttle feeler while'the lay is moving through a revoking range of motion and to be disconnected from the shuttle feeler during the through a revoking range of motionand to be disconnected from the shuttle f-eeler during the transferring range of motion of the lay',.the latch to engage the lay during the transferring range to effect the transferring operation, and a lock rendered operative by movement of the transferring mechanism to. hold the latter adjacent the position it assumes-upon completion of the transferringoneration to prevent the latch from moving with the lay out of'the transferring range of motion of the lay.

5. In a weft replenishing.- l'ooin having a lay and a: shuttle feeler, transfer mechanism ha ving a: latch to he operatively related to the shuttle feeler while the lay is moving through. the revoking range of motion and -to be disconnected from the shuttle feeler during the transferring range to efiiect'the transferring operation, means operative after the completion of a transferring operation to prevent the latch from following the lay into the range of motion corresponding to the revoking range, and means operative after the lay moves away from the transferring range to render the latch capable of returningto normal position.

6. In a weft replenishing loom having a lay andashuttle feeler, transfer mechanism having a latch to be operatively related to the shuttle feel'er while the lay is moving through 'a revoking range of motion and to be disconnected from the shuttle feeler during the transferring range of motion of the lay,

the latch to engage the lay during the transferring range to effect the transferring operation, a lock' rendered operative by move- 55 ment of the transferring mechanism to hold' the latter adjacentthe position it assumes upon completion of the transferring operation to prevent-the latch from moving- With the lay out of the transferring range of BO motion of the lay, and means operative by the lay to unlock the transfer mechanism after the lay moves out of the transferring range on its rearward stroke.

7. In a loom having a lay, atransfer mecha-;

flfi'inism, means to-connect the mechanism and is set to effect transfer, and means to lock the transferrer arm after the lay has given the t-ransferrer arm a transferring movement.

9. In a multicolor weft replenishing loom capable of revoking a previously called transfer, a regularly moving element, transfer mechanism, a latch to be engaged by the element to transmit a force from the latter to the mechanism to'give said mechanisnr a transferring operation, and alock to hold the transferring mechanism approximately in the position it assumes upon completion of the transferring operation, the latch being releasedby the lay and movable with respect to the mechanism during the time that the latter is locked.

10. In a multicolor weft replenishing loom capable of revoking a previously called transfer,.a regularly moving element, transfer mechanism, a latchto be engaged by the element to transmit a force from the latter to the mechanism to give said mechanism a transferring operation, a lock to holdlthe transferring mechanism adjacent the positi on it assumes uponcompletion-of the trans feu'i'ng operation, the latch being released by the lay and movable with respect to the mechanism during the time that the latter is locked, and means to' render the lay effective to unlock the transfer mechanism after the latch has been released by the lay.

11. In a loom having a lay, transfer mechanism to be operatively related to the lay tohave atransferring operation, and

means to lock the transferring mechanism aftercompletion of a transferring operation and maintain said mechanism locked as the lay moves'away from transfer position.

12. a loom havingla' lay, transfer mechanism to be operatively related to the lay to have a transferring operation means to lock the transfer mechanism adjacent the position it assumed upon the completion of a transferring operation, and means to-thereafter unlock said mechanism.

1-3. Ina loom having a lay, atransfer meclr,

anism to-be operatively related to the lay to have a transferring operation, means to lock the transfer mechanism after completion of transferring operation with the lay in a given position,-and'means effective to release the transfer mechanism when the lay has moved away from said given position.

14. In a loom having a lay, a transfer mechanism to be operatively related to the lay to have a transferring operation, means to lock the transfer mechanism upon completion of a transferring operation with the lay in a given position, a device operative by the lay and effective when the lay has moved away from said given position to unlock the transfer mechanism, and means effective when the transfer mechanism returns to normal position to move the releasing device out of the path of the lay.

5 15. In a weft replenishing loom having a lay movable back and forth therein, a transferrer arm, means to give the transferrer arm a transferring movement during movement of the lay in one direction, means to thereafter lock the transferrer arm, and a subsequently active means operative when the lay is moving in the other direction to unlock the transferrer arm.

16. In a weft replenishing loom, a lay having beating-up and return strokes, a transfer mechanism including a latch, means to set the latch for engagement with the lay when a transfer is called, positively acting means operative at a given point in the beating-up stroke of the lay to move the latch positively out of operative relation with respect to the lay if the shuttle is improperly boxed, the lay and latch having operative engagement at a later point in the beating-up movement of the lay if the shuttle is properly boxed, means thereafter elfective to lock the transferrer arm adjacent the positionit assumes at completion of the transferring operation until the lay on its return stroke moves out of operative relation with respect to the latch, and means subsequently operative to unlock the lay.

In testimony whereof I have hereunto affixed my signature.

ALBERT A. GORDON.

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