US155599A - Improvement in weft-stop mechanisms for looms - Google Patents

Description

UNITED STATES PATENT OFFICE.

WILLIAM TAYLOR, OF BOSTON, MASS., ASSIGNOR TO THE AMERICAN STOP- MOTION COMPANY, OF SAME PLACE. i

IMPROVEMENT IN WEFVT-STOP MECHANISMS FOR LOOMS.Y

Specification forming part of Letters Patent No. 155,599, dated October 6, 1874; application filed August 24, 1874.

To all whom it may concern: l

Beit known that I, WILLIAM TAYLOR, of Boston, in the county of Suiiolk and `State of Massachusetts, have invented certain new and useful Improvements in Weft-Stop Mechanism for Looms, of which the followin g-t is a specification:

The nature of my invention consists in combining, with the weft-detecter letoff device, sliding daggers, located on the face of the lay, said daggers being so arranged and made to operate that when the weft-thread is in place they will not come in contactwith the shipping and stopping devices, which are attached to the breast-beam.

Figure 1 is a perspective view, showing` a part of my invention. Fig. 2 is'a plan of my invention. Fig. 3 is a front elevation of the lay. Fig. 4 shows an end view of thebreastbeam and a part of the knock 0E device. Fig. 5 is a plan to illustrate the action of the stopping device. Fig. 6 is a rear elevation of the lay, showing the let-oft' device.

The detecter, grill, and fork V are made in the usual manner, and need not be herein described.

` consists, brieily, of the cross-lever M,"Figs. 1,

3, and 5, which is attached to a shaft, N, Fig. 1, which passes through the lay, and has an arm,0, attached to it. This arm O is held by a latch, P, which is provided with an arm, R, so arranged, in connection. with the iinger or lappet S, that when the finger or lappet S is lowered by the fall of the detecter V through the grill, (in case of the absence of the weftthread,) the arm Rywill be thrown down and the latch l? disconnected with the arm O. This action will allow the spring Y to throw the shaft N and lever M around in the direction ofthe arrow, Figs. l and 3, and thus, acting through the rods L and K, draw the sliding` daggers B and H, Figs. 2, 3, and 5, in wardly--that is, toward the center of the lay. The sliding daggers H and B, Figs. 2 and 5, are made tirm and slide in the housings C, and are so placed that when held by the arm O, Fig. 1, of the let-off device, they will pass' by, at each stroke of the lay, the knock-off buttress X and the liXed buttress W, Fig. 2, but when a weft-thread is absent, then the let-off device frees the arm O, as has been described, which allows the shaft N to rotate, and the cross-lever M to be thrown around, as indicated by the arrow, and thus draw, through the rods Kfand L, the sliding daggers B and H inwardly to the position shown in Fig. 5, so that H will come in contact with the xed buttress W, and B will come in contact with the knock-ofi' buttress X, thus stopping the forward motion of the lay. The knock-oli' buttress X is bent up in the rear of the breast-beam, as shown at Fig. 4, its lower end G terminating in a lever, D, pivoted at U, Figs. 2 and' 5. This lever D, at its outer end F, comes in contact with a second lever, E, pivoted at I, and arranged to act so as to throw oft' the shipping-lever J, Fig. 2, whenever the buttress X is forced back by the dagger B, as shown in Fig. 5.

I do not confine myself to any particular device for connecting the moving buttress X with the device for knocking oft' the shippinglever.

The action of my invention is as follows: In starting the loom, the sliding daggers B and H are set as shown in Fig. 2, so that the lay maybeat up in the usual manner. Now, if the weft-thread is absent, the detecter V will 'fall through the grill,'and, acting through the rod T and finger or lappet S, will disconneet the latch P from the arm O, and thus cause the sliding daggers B and H to be drawn into the position shown in Fig. 5-that is, to cause them (the dag-gers) to come in contact with the buttress W and X. As the buttress X is removable, and projects beyond the buttress W, as shown in Fig. 2, it is hit by the dagger B before the buttress W is hit by the dagger H. 'lhe first action (after contact) of the dagger B is to push back the buttress X and throw off the shipping-lever J. The continued motion brings the bent part of the buttress X (see Fig. 4) up against the breast-beam, at which point it will resist further motion of the dagger B, and consequently of the lay. At

the same time that the' dagger B is stopped, as above described, the dagger H at the other end of the lay comes in contact with the fixed buttress W, and is stopped. Thus both ends of the lay arel stopped abruptly immediately after the belt-shipping device has been acted upon. f

I claim as my invention- I l. The combination of the'sliding daggers' B and H with the lay of a loom and the buttresses W and X, substantially as described,

and for the purpose set forth.

2. The combination of the weft-stop let-ott' device,`-theltnger S, the arm R, the latch P, the arm O, and shaft N with the cross-lever M and rods L and K, operating to move the sliding daggers H and B, substantially as described, and for the purpose set forth.

i WILLIAM TAYLOR.

, Witnesses:

lFRANK G. PARKER, WILLIAM EDsoN.

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