USRE6761E - Improvement in weft-stop mechanisms for looms - Google Patents

Description

' T. IsHERWooD aw. NUTTALL.t

WEFT STOP MECHAN'lSM FOB, LOOMS.4

Ress'ued Nov. 23, 1875.

/ ESSES NJETERS, PNOTaUTNDGRAPHEH, WASHINGTON. D` C:

Wett-Stop Motion,

Avatar-Iets Corr THOMAS ISrInnwooD AAND w'ILLIA ISLAND,jAssI'erNoIaS"7 BYV'MESNI; wooLENLooM STOP-MOTION OOM IMPROVEMENTl IN' w-EFTsToYP MECHANIsMs FOR Looms.v

Specification forming part of Letters Patent N o. 1

August 11, 1874; reissue No. 6,761,

To all whom 'it may concern Y Be it known that we, THOMAS IsHEawooD and WILLIAM N UTTALL, of Westerly, in the county of Washington and State of Rhode Island, have invented a new and Improved a specification Our invention consists of a comb of one or more wires, and devices for presenting them, after the shuttle passes, behind the weft-thread and in advance of the reedto comb the weft or lling toward the weft-fork used for throwing olthe shipper-lever, and thereby insure the raising of it properly when the weft is present, the said comb and the stopping mechanism being located near the middle of the loom, or thereabout. It also consists of a novel arrangement of means for presenting the weftfork or feelerto the weft in a suitable position in advance of the cloth, and then moving it away, so as not to interfere with the heating up of the weft by the reed.

'The arrangement of the stopping mechanism at the middle of the lay savesthe necessity of employing one near each edge of the warp, and it is better, because, in the latter arrangement, an end of broken weft extending to the middle ofthe warps, or beyond, will often raise the latch of the weft-fork and prevent the stopping of the loom.

It voften happens in looms carrying several shuttles that. owing to the cutting or overstraining of the weft in particular places by the shuttle-boxes, it breaks, so that the ends are long enough to raise the latches when the stop-motion is at the side of the loom, and thus the loom is not stopped assoon as it should be. Hence, the arrangement of' the stop motion at the middle of the loom is particularly desirable.

Figure 1 is an elevation in longitudinal section of a loom provided lwith our improved weft-stop motion. v]ig.,2 is a front elevation of the same loom with a part of the-front beam broken out. Fig. 3 is a detail view, showing the catch of the belt-shipper lever.

of which the following is jecting from the free end of the rockwould extend alon thereahont; but W ciprocate t-hrongl furnishes for the In practice we 38,893, dated May 13, 1873; reissue No. 6,010, dated dated November 23, 1875; application filed May 25, 1875.

projecting upward through the beam B of' the lathe from the free end of a rock-lever, C, pivoted at D on a bracket, E, projecting' downward and forward from the lathe-beam B, and carrying at its other end the friction-roll F,

which works in acam-slot, G, of the plate H,

attached to the under side of the front beam I of the loom, the slot being so shaped that,

as the lathe swings forward, the wires A will be thrown up behind the weft J as soon as vthe shuttle haspassed, and remain tov carry forward and support the weft until it has held the latch K up by acting on the feeler M a sufficient length of time to pass the notch L of the lever N. The latch and the feeler are pivoted on the end of the rock-lever 0 on the shaft P, which has along arm or crank, Q; operated by the cam R on the main shaft S, which is so shaped that the feeler is carried back between the warps in front of the lay immediately after the shuttle passes, and suciently far to be struck by the weft and pressed back by it until the latch has passed the notch 'L, but withdraws it in time to be out of the way of the reed at the beat up. When the weft is broken the latch falls into the notch `L, so that cam R throws lever N back by means of arm Q and rockver N throws the .Shippe notch n by the arm V on vthe end of Shaft l, rock-lever W, and thepin w.

The wires A and their actuating devices may be arranged above the lathe-beam, as shown in dotted lines A1, the rock-lever being arranged on the upper part of the lathe-say, on the beam A2-and the cam-plate H mounted on any suitable standard rising from the loomframe. In such case, by preference, the camplate and the rock-lever (l would be arranged at one side of the loom, while the rod B', prolever, g the lathe tothe middle, or e prefer that the wires A re- 1 the beam B, which thus In a retreat and support.

r-lever T out of the The letters A A denote two wires or a comb Naud O purpose to have the levers so attached to the shafts P P', or

lever O, and the leblocks ,Q1 thereon, that they can be readily removed by removing a pin, Q2., to facilitate the removal of the cloth fromthe cloth-roll.

We claim as our invention- 1. The combination, with the 1athe,.0f the wires A and mechanism, substantially vas described, for presenting" them behind the weft `and withdrawing them, said wires being arranged to comb the weft forward toward the cloth, in the manner set forth.

2. The reciprocating wireszA and their operating mechanism, as set forth, said Wires being adapted to support and carry forward the weft, in combination withV the weft-fork and shipping mechanism, substantially as described.

Y 3. The combination of the rock-lever O, arm Q, cam R, and fceler and latch with thelever N, for operating the shipper-lever, all arranged to operate in the manner described. v

In witness whereof we hereto set our hands. THOMAS ISHERWOOD.

WILLIAM NUTTALL. Witnesses:

WM. P. CoY, THOMAS VINCENT.

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