US1578519A - Yieldable transferrer arm for automatic looms - Google Patents

Description

March 30 192 6.

- E. R. HOLMES YIELDABLE TRANSFERRER ARM FOB AUTOMATIC LOOMS Filed July 19, 1924 Patented Mar. 30, was

1 {UNITED STATES 1,578,519 PATENT. OFFICE.

' *ELBRIDG-E R. HOLMES OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 85 KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

v YIELDAIBLE TRANSFERRER ARM FOR AUTOMATIC LOOMS.

Application filed. July 19, 1924. Serial 1 1'0."727,07"2'.2 A

To all whom it may concern:

, Be it known that I, ELBRIDGE R. HOLMES, acitizen of the United States, residing at WVorcester, in. the county of lVorcester and State of Massachusetts, have invented a new and useful-Yieldable Transferrer Arm for Automatic Looms, of whicli'the following is a specification.

I This invention relates to improvements n weftreplenishing mechanism for looms and more particularly to the transferrer,

arm by means of which, a full bobbin is moved into a shuttle carrying a depleted bobbin. 1

In the usual form of multi-colorfweft replenishing mechanism such, for instance, as that shown;v in Patent No. 1,030,748, the bobbins aremovedfrom a plurality of compartments to a common discharge or transfer position. The transferrer arm is located between inclined guides and moves toward thebobbin to betransferred as the lay approaches the forward limit;v of its motion. It is usual to have solidpart of the lay engage a latch which is pivoted; to the trans .ferrer arm so thatrtl e latter is required to Qmovef-as-the lay advances. Occasionally a .bobbin will not move entirely to transfer f position before the transferrer begins to. descend and the bobbin willbe caughtbetween the transferrer arm and the guideway. Under these circumstances, with the lay moving and thetransferrer held against motion, some part necessarily breaks and 1t has been found in practicethat the lower portion of the inside frame of the replenishmg mechanism isthe part-which most frequently vis ruptured.-

It i theprincipal object of my present invention to] provide transfer mechanism' constructed with a breakable portion which ;is sufficiently strong underall normal conditions to effect proper transfer but is weak enough to break when the parts are subjected to abnormal strain, the part to be. broken being readily replaceable and relaev tivelyinexpensive. i p

7 Thereplenishing mechanism of the type referred to must be restored to normal condition at the end of the forward stroke of the lay which would ordinarily result in a transfer. This is usually accomplished by means of'two devices'whichform parts of I the replenishing mechanism; One of these Fig. 2. i

devices is the usual shuttle feeler and the other isa transferrer latch which is lifted to connect the transferrer arm'temporarily to the lay. The latch is lifted, by a rod, the. upper end of which is connected to thetop shaft of the replenishing mechanism and the lower end of which is looped under a cam face formed on the lower part of the latch. As the latch is moved'forward, the

cam face thereon depresses the rod to reset the top shaft. If any part of the transfer mechanism breaks and the shuttle feeler be defective the replenishing mechanism will remain unset. It is a more particular ob ect of my present. invention to provide a transfer mechanism which will break' when subected to unusual strain but arranged so that the replenishing mechanism may be reset even though the parts of the transferrer j 7 arm have been ruptured. 4 Y

With these and other objects "in view which will appear'as thedescription pro- Zceed's, my invention resides in thecombinw tion and arrangement. of parts hereinafter 'de'scribed'and set forth. in the claims.

the accompanying drawing, wherein 1 have shown a convenient form of my invention,

Fig. lis a side elevation of a ersonae 1 the replenishing mechanism having my'in- 7 vention applied thereto, with the outside plate removed for the sake of clearness, 1 Fig. 2 is a view similar to Fig.1 but with the parts shown as they would appearwhen 'rupturedand after resetting the magazine,

.Figf3' is a vertical section on line 3-3 of Fig. 1, and

Fig.4 is aver tical section on line 4 -4: of.

Referring to the'drawing, it will be seen' that I have provided a loom side 10 on which is secured the frame 11 of a replenishing mechanism indicated at 12. transferrer arm 13 is pivotally'mounted on a fixed stud 14' and has a bobbin engaging heel 15 and a pair of depending'arms 16 between which extends a stud 17. The lay 18 is provided v with a bunter19 secured thereto and positioned for engagement with a transferrer; latch 20 which isadjustably'held to latch holder 21 by means of bolt '22. The'reple'n- 'ishing mechanism is providedwith a guide' 23 which is positioned to receive bobbins 7 which may originate from compartments' 24:1; 1;;

usual construction and for a more complete description thereof reference may be had to the aforesaid Patent No. 1,030,748.

. My invention relates more particularly to the means for connecting the transferrer latch holder 21 to the stud 17 and in carrying out myjinvention I' provide said holder with an upward extension having formed thereon a semi-circular bearing ,31 which together with a simrlarzbearing 32 formed in a separatebearing' block 33 forms the bearing for stud 17. 'The said block 33 is held to the extension 30 by means of a bolt 34 which -.is of'light construction and serves to hold the bearing p ortions3land 32 together.

In the normal operation of the replenishing mechanism the parts will be in the position shown in Fig. land at the time of transfer the bobbin engaging heel 15 will descend as the lay 18 continues to advance,

the bobbin sliding down guideway 23 into position to be engaged by the transferrer and moved into the shuttle- However,

should the bobbin W be slow in movingto 1 transferposition due'either to being oversize or to the improper releasing thereof the heelv 15 will engage it and be held against further downward motion. At this time the -,lay, as it continues to move forward, will .move' the bunter 19, latch 20, and latch holder '21- but the block 33' will be held against forward movement by the stud :17

and the bolt 34 will break, permitting the parts to assume some such position as shown in v Fig. 2. Thetransferrer latch 20 isprovided. on the under surface thereof with a cam face 35 andthe latch holder is provided with a surface 36 on the upper portion there- Qof which lies under the stud 17. As the latch "moves forward under influence ofthe .lay and the rod 25. is in raised position the camface 35 will engage the lower edge of the rod, the first effect of which will be to move face 36 against stud 17after which further upward movement of the latch would be prevented and as'the same moves forward the rod 25 will bemoved downwardly to reset'the replenishing mechanism. From the foregoingit will be seen that I have provided a very simple construction by which abnormal" strains incident to improper transfer may berelieved and that the movement of the parts is such that when the lower parts of the transferrer mecha hism become ruptured the replenishing mechanism will be properly set. I am aware that Patent No. 880,810 granted March 3, 1908 to Morell shows a yieldlng connection between the lay and the transferrer, but with such a device faulty transfers can occur repeatedly without the attendant being aware of the fact, whereas in. my present construction the loom is stopped by the action of the filling stop mo tion' (not shown) which will operate subsequently to the breaking of the bolt 34. Also, the patent to Morell fails to show any device for resetting the replenishing mechanism. The parts as presented herewith add very {little to the cost of the transferrer and latch and permit the reassembly of a broken connection atslight expense;

Having thus described my invention it will be apparent that changes and modifica tions may be made therein, by those skilled in the art without departing fromthe spirit and scope of the invention, and I do not wish to be limited to the details hereindisclosed, but what I claim is:

' 1. In a weft replenishing mechanism for looms, a lay, a pivoted transferrer arm, a latch, a support for the latch pivoted to and moving with the transferrer arm and movable to a position to be engaged by the lay,

said pivotal connection being formed'in part by a breakable member sufiiciently strong under normal conditions to effect transfer but weak enough to be broken under conditions of abnormal transfer to disconnect the latch from the transferrer arm. to render subsequent transfer impossible.

2. In a'weft replenishing mechanism for V looms, alay, a transferrer arm, a latch movableto engage the 'lay, a two part holder for the latch' pivotally connected to' and moving with the transferrer arm, and a breakable member holding said two parts of thelatch holder together, said member being sufliciently strong to effect transfer under normal conditions but being breakable under abnormal conditions to disconnect the quent transfer impossible.

3. In a weft replenishing mechanism for "latch from the transferrer to render subselooms, a lay, a transferrer arm, a stud car: ried by the transferrer arm, a latch engageable with the lay, a two part holder for the latch, the parts of said holder having pivotal contact with the stud, and a breakable member holding said parts together, said transfer under normal conditions but weak enough to break under abnormal conditlons to effect separation of the latch from the transferrer arm. V

4. In a-weft replenishing mechanism for looms, a lay, transferrer mechanism including an arm, a yieldable connection between the lay and the transferrer arm to yield under abnormal conditions, and resetting member'being sufliciently strong to effect means for the replenishing mechanism positioned to be acted on by the transferrer mechanism to have a resettin movement after said connection has yielde 5. In a weft replenishing mechanism for looms, a transferrer arm, a 1ay, a latch connected to the arm, means when raised to lift the latch in the path of the lay and when lowered to reset the replenishing mechanism, connections between the transferrer arm and the latch sufliciently strong under normal conditions to effect transfer but weak enough under abnormal conditions to break, and means formed on the latch and operatively positioned with said first named means to lower said first named means after the connection between the arm and the latch has been broken.

6. In a weft replenishing mechanism for g 20 a latch holder, a stud carried by the translooms, a lay, a transferrer arm, a latch,

ferrer arm, means defining a pivotal connection between the latch holder and the stud,

. In testimony whereof I have hereunto af- 8.0

fixed my signature.

ELBRIDGE R. HOLMES.

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