US515532A - Weft stop-motion for looms - Google Patents

Description

-UPIPBR s: J. E. NEWTON. WBT STQP MOTION POR LOOMS.

No. 515,532. Patented P55. 27, 1594.

(No Model.)

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f Nrrnn STATES ORIN PIPER AND JAMES E. NEWTON, OF MAN CHESTER, NEWT HAMPSHIRE.

WEFT STOP-MOTION FOR LOOVIS.

SPECIFICATION forming part of Letters Patent No. 515,532, dated February 27, 1894.

Application tiled May 6, 1893. Serial No. l73,213. (No model.)

To all? whom t may concern:

Be it known that we, GRIN PIPER and JAMES E. LEWTON, of Manchester, county of Hillsborough, State of New Hampshire, have in-f vented an improvement in W'ett Stop-Motions -for Looms, of which the followingdescription, in connection withy the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

In ordinary looms the tail piece ot the wett fork has a lip, which, when the tail piece is not held up by the action of the legs et the fork on the' Weft,is struck by the usual hammer, which, acting through the tail piece draws the slide carrying the fork 'back in its guide box secured to the breast-beam and 'causes it to ettect the release of the shipper handle. In this old Way it will be seen that the fork pivot and the tail piece are subjected to considerable strain. To obviate this, We have combined with the usual hammer-arm a dog, which, when the Wett is present will pass under the lip of the tail piece, but when the weft is absent will strike said tail piece and be turned by it and put in position to strike the weft fork carrying-slide and retract it in its guide-box.

Our.' invention, therefore, consists in the combination with a weft fork, its carryingslide, and guide-box, ot a hammer device having a dog extended into the said carrying slide and adapted to be tripped by the Wett fork when the weft is absent, said dog then act-ing directly upon and moving the slide, thus relieving the weft fork itself of the duty of pulling back the slide.

Figure 1, shows a sufficient portion of a loom and its weft fork with our improvements added to enable our invention to be under stood; and Figs. 2, 3,4 and 5, details to be referred to.

The loom side A, the breast-beam A', the studB fixed to the loom side, and the hammercarrying lever Bvniounted thereon and adapted to be vibrated once for each pick by a suitable cam on the main or cam shaft, not shown, the guide-box B2 lined to the breast-beam by the boltBS, and the slide B4 adapted to be slid back and forth thereon, and in practice adapted to act byits rear end against an arm of the rock shaft carrying-devices to release the shipper handle, are and may be all as usual.

The slide B4 in this our present invention is provided with a lip b, which, as shown, is fixed to the slide by a bolt h. This invention, is not, however, limited to the manner of conneoting the lip to the slide, but it is preferable to make it separate, as these old forms of slides may be utilized with our improvements.

The Wett fork D pivoted at D on the slide 6c has a tail piece or usual construction, said tail piece having a suitable shoulder or projec tion, as d.

The short arm ot' the hammer-carrying lever has attached to it by a bolt e the hammer e', provided in accordance with our invention, with a dogf pivoted on the said hammer at 2, said dog, as herein shown, having a notched pushing end 8, which is the heavier, so that the dog normally stands as shown in Fig. 2, in which condition said end 3 passes under and does not strike the lip b and does not move the slide bar back.

The slide bar will not be pushed back so long as the weft fork meets the weft properly laid, for under su-ch circumstances the projection d of the tail piece is elevated above the path of movement o t the eart ot the dog f. Now, it the weft has not been properly laid, then the Weit fork will not be tilted, but the 8c tail piece will be lett down, as in Eig. 1, and the projection d will catch the ear t and turn the dogf about its pivot as thehammer is being moved in the direction of the arrow Fig.

l, and will cause the tail 5 ot the dog to be 85 brought up to the shoulder 6, thus pulling the pushing end 3 of the dog into position to engage the lip h and move back the slide B4, the

latter carrying with it the front ofthe Wett fork and the said fork, thus relieving the weft 9c fork of all strain.

A weft fork Which has not to be strong enough to withstand the stroke of the hammer and then pull the slide back with it may be made lighter and consequently more delicate in action than when the fork must stand so much strain,

Our invention is not limited to the exact shape shown for the weft fork, its tail piece, or projection thereon, as We may use any other i oo usual or suitable weft fork.

l/Ve do not claim a hammer provided With a dog pivoted to be turned to directly engage a lever constituting part of a stop motion.

Having described our invention, what we claim, and desire to secure by Letters Patent, 1s

1. A weft-fork, its carrying slide and guidebox, and a hammer, combined with a dog extended into the said carrying slide and adapted to be tripped by or through the weft-fork and to act against and move the said slidein its guidebox on the failure of the weft, substantially as described.

2. A Weft-fork, its carrying slide and guidebox, said slide having a detachablelip, and a Weft-fork, combined with a hammer having a pivoted dog provided with an engaging end to engage said lip, substantially as described.

3. The combination with the breast beam, the guide-box B2 mounted thereon, and the slotted slide B4 adapted to Ibe reciprocated in said guide box, of a weft fork, a hammer,

GRIN PIPER. JAMES E. NEWTON.

Witnesses:

C. A. SULLIVAN, P. Il. SULLIVAN.

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