US1662198A - Weft-replenishing loom - Google Patents

Description

.1. T. MALLOY WEFT REPLENISHING LOOM Flled Feb 23 1927 March 13, 1928.

W/Wa

Patented Mar. 13, 1928.

UNITED. STATES 1 1,662,198 PATENT OFFICE.

JAMES T. MALLOY, OF OAKLAND, RHODE ISLAND, ASSIGNOR, BY MESNE ASSIGN- MEN'IS, T0 DRAPER CORPORATION, OF HOPEDALE, MASSACEUSETTS,'A CORPORA- TION O13 BLAINE.

WEFT-REPLENISHING LOOM.

Application filed February 23, 192?. seria ize. 170,144

The present invention relates to an in1- provement in weft replenishing loom-s.

In weft replenisl'iing looms of the feeler controlled type, the loom is provided with a teeler on one side of the warp which feels of the yarn in the shuttle and operates ,to cause weft replenishment upon a predetermined exhaustion of the filling on the bobbin. The hopper or magazine is located on the opposite end of the loom from the teeler, and when a new bobbin is inserted in the shuttle the thread extending from the selvage to the exhausted bobbin is severed by the temple thread cutter located on that side of the loom. it the same time the shuttle feeler thread cutter moves rearward with the shuttle i'eeler, and its mite and clamp are opened during the rearward movement. It then operates to clamp the thread extending from it to the temple thread cutter, and to cut the thread extending from it to the discharged bobbin so that the bobbin in falling from the shuttle may draw its thread out of the eye of the shuttle. The shuttle teeler thread cutter and clamp holds one end of this piece of thread extending from it to the temple thread cutter, and after the insertion of a new bobbin this shuttle teeler thread cutter and clamp retreats and continues to hold this piece of thread. It has been observed that sometimes this piece of thread will continue to be held by the-shuttle feeler thread cutter and clamp until the next rcplenishment and when the shuttle :fceler thread cutter and clamp is opened on its rearward movement to feel for the shuttle and cut and clamp the thread then being exhausted from the shuttle, the piece of thread being carried backward by the shuttle .fEBlQI is caught in the lay and is carried into the shed on the next shot of the shuttle.

The object of the present invention is to prevent this accidental drawing into the cloth of pieces of thread from the shuttle feeler thread cutter and clamp. and to this end provision is made for opening the shut tle feeler thread cutter and clamp after it has retreated from its clamping and cutting operation. The invention consists in the construction hereinafter described and particularly defined in the claims.

In the accompanying drawings illustrating the referred form of the invention, Fig. 1 is a cross-section of the breast beam of a loom showing the shuttle feelcr thread cutter and clamp, the temple thread cutter and the connections between; and Fig. 2 is a rear elevation of a portion of the breast beam of a loom showing the shape and mode of support of the connection between the temple thread cutter and the shuttle feeler thread cutter and clamp. d a The illustrated embodiment of the inventlon is described as follows: The loom is a weft replenishing loom of the feeler controlled type provided on its right-hand end with a hopper indicated in a general Way by the reference character 10. The breast beam 11 occupies the position shown in Fig. 1 with respect to the hopper 10. The shuttle ileeler thread cutter andclamp is indicated in a general way by the reference character 12. The temple thread cutter 13 is shown in outline, the hidden parts being illustrated in dash and dot linesyand the remainder of the temple and associated parts are omitted for the purpose of clearness. On the rear side of the breast beam .11 is supported the connection 14 between the temple thread cutter 18 and the shuttle feeler thread cutter and clamp 1:2. This connection 1 L consists of a piece of wire, shown in elevation in Fig. 2. The straight portion or body of the wire is pivotally mounted on the ears 15 secured on the rear side of the breast beam. At one end the upright arm 16 of the connectionextends from the adjacent earupwardly, and has its on d in position to engage the finger or tail li-1 upon the front end of the striker Upon the opposite endof the connection 1% is provided an arm 17,

which extends downwardly and rearwardly from the adjacent ear 15 and carries upon its end the pin 18 which extends into the path of motion of the tail 19 of the temple thread cutter 13. i i

The shuttle feeler thread cutter and clamp is constructed and operates as illustrated and described in the Northrop Patent No. 1,515,515, dated'November 11,1924. 'In the operation ofsuch shuttle feeler thread cutter and clamp, the clamp remains closed after it has seized the thread and severed it while in its rearward position. The normalmode of operation, therefore, of the loom is not interfered with except to the extent indicated movement of the shuttle feeler thread cutter and clamp, the clamp moves forward and retains its hold upon the thread extending from the clamp to the temple. Then the device above described, consisting of the connection between the shuttle feeler thread cutter and clamp and the temple thread cutter, operates gradually to open the clamp, sufiicient time being permitted to allow the temple thread cutter surely to cut the thread before the clamp of the shuttle feeler thread cutter and clamp has released its held end.

A complete description of the operation of the device is as follows: In the operation of the loom when the fecler indicates critical exhaustion, it causes the change shaft to be operated to cause the hopper to insert a fresh bobbin in the shuttle. Upon the beat of the lay on which the change occurs, the shuttle feeler swings rearwardly to make its feeling movement as the lay moves forward. During the rearward movement of the shuttle feeler the shuttle fceler thread cutter and clamp is opened wide, and assuming the proper boxing of the shuttle, the shuttle feeler engages the outgoing thread near the shuttle and then as the lay completes its forward movement it causes the shuttle feeler thread cutter and clamp to sever the thread and to clamp the end thereof and hold it. The transfer being completed, the end of the weft held by the shuttle feeler thread clamp extending to the sclvage moves forward and continues temporarily to hold such thread end. Presently the other end of this piece of thread is cutby the temple thread cutter. Then the piece of thread held by the shuttle feeler thread clamp is held only by the thread clamp, previous to which it was held by the clamp and the cloth. \Vith each beat of the lay the temple thread cutter is operated by the engagen'ient of the lay with the tail of the cutter, and the latter oscillates the connecting wire, causing the distant end thereof at each forward beat of the lay gently to strike the tail of the shuttle feeler thread cutter and clamp. As a result of several beats ot the lay these little blows of the connecting wire gradually open the shuttle feeler thread clamp until finally it releases the piece of thread held thereby and the piece of thread is permitted to fall out of the way without possibility of its being caught by the shuttle or shuttle thread and carried into the shed.

Vhile it is preferred to actuate the shuttle feeler thread clamp by the means described to open it after it has caught the thread from the outgoing bobbin, and while itstill holds it in forward position from the temple thread cutter, it is apparent that other means may be employed gradually to open the shuttle feeler thread clamp in the manner described. The present construction is preferred because of the contiguous position of the temple thread cutter and the convenience of actuating the shuttle fccler thread clamp therefrom.

Haring thus described the invention, what is claimed is:

l. A. weftreplenishing loom of the lilling feeler type having, in combination a shuttle feeler provided with a thread cutter and clamp, means for closing the cutter and clamp on the forward beat of the lay upon replenishment to cut and clamp the thread extending from the cutter and clamp to the selvage, and means for delivering a series of light blows to the shuttle feelcr thread clamp to open it gradually after a few heat-L ol' the lay subsequent to replenishment.

A weft replenishing loom as defined in claim 1, provided with a temple thread cutter actuated by the lay, and a connecting device between the temple thread cuttc and the shuttle feeler thread cutter and clamp acting to gradually open the shuttle i'cclcr thread clamp a sutliciently loin, time a ttcr replenishment to permit the cutting of the threadfrom the exhausted bobbin by the temple thread cutter before the shuttle tech-r thread clamp releases the thread.

3. In a replenishing loom, the comhination of a shuttle feeler provided with a thread parter and clamp, means for caus ing the parter and clamp to part and clamp the thread between the shuttl 2 and cloth sclvage. a temple cutter, and means actuated by the temple cutter to open the parter and clamp when the latter are in from position and after the temple cutter has parted lhn thread at the cloth selvagc.

at. In a replenishing loom, the combination of a shuttle 'lcelcr provided with a thread parter and clamp, means for causing the parter and clamp to part and clamp the thread between the shuttle and cloth telva a temple cutter, and means t'onstil'uto-il as a rocking n'ien'lber and actuated by the tem ple cutter to open the parter and clamp when the latter are in front position and alter the temple cutter has parted the thread at the cloth selvege.

In testimony whereof I have signed my name to this specification.

JAM S 'l. MALLOY.

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