US246637A - Loom-shuttle - Google Patents

Description

(Model) 2 Sheets-Sheet 1.

J. RIG-BY.

LOOM SHUTTLE.

No. 246,637. Patented Sept. 6,1881.

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(Model.)

2 SheetsSheet 2. J. RIGBY. LOOM SHUTTLE. No. 246,637.

Patented Sept. 6, 1881.

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JOHN RIGBY, OF LOWELL, MASSACHUSETTS.

LOOM-SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 246,637, dated September 6, 1881.

Application filed July 6, 1880.

To all whom it may concern:

Be it known that I, JOHN RIGBY, of Lowell, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Loom-Shuttles, of which the following is a specification.

My invention relates to shuttles for powerlooms; and the object of my improvement is to provide a shuttle which shall automatically break the filling-thread which it carries at or near the time of the first passage of the shuttle through the shed after a warp-thread has broken. I accomplish this object by the mechanism illustrated in the accompanying drawings, in which.-

v Figure l is a view, partly in section, of a shuttle provided with my improved threadbreaking device. Fig. 2 is a view of a portion of one side of a shuttle, showing the threadbreaking device. Fig. 3 is a perspective view of one end of a shuttle containing my device.

A is a shuttle of the ordinary well-known construction, having a spindle, a, (represented as broken in Fig. 1 of the drawings,) upon which is placed a cop of yarn, which forms the filling of the cloth being woven. Upon the interior of one side of the shuttle, near the eye through which the thread passes out as it is unwound from the cop, I place a frame or case, B, containin g a tumbler, 6, provided with a finger, f, which extends out slightly beyond the frame and beyond the edge of the shuttle-side, to

which the frame is attached, which side is at this point slightly depressed or hollowed out. There is also within the frame a hook, 8, formed of a wire, which, when released from under a stop, will be projected through an opening in the case toward the spindle holding the cop of thread. This hook is held either by the resiliency of the spring-wire upon whose end it is formed, or by an attached spring, 9', down from the tumbler under a stop, k, which holds the hook retracted within the case. The tumbler c is connected with the hook s by a cord or connecting-link, m, of such a length that any oscillation of the tumbler which does not carry the finger of the tumbler within the case will not withdraw the hook from under the stop, while, if from sudden contact with any object, the projecting finger of the tumbler is given (ModeL) sufficient momentum to carry it within the case, the cord or link will pull the hook out from under the stop, and the hook will, by the resiliency of the wire on which it is formed, be projected out through the opening of the case toward the spindle of the shuttle. The connecting-link m is attached to the tumbler directly below the axis on which the tumbler moves, so that the movement of the finger and tumbler in either direction produces the same results, and so that the tightening of the cord and tension of the spring while under the stop tend to keep the finger f projected at right angles to the line of movement of the shuttle in a position toreceive a movement and impulse from either direction. Otherwise it might fall or be moved over in one or the other direction, so as to have its extremity about upon a level with the surface of the shuttle, and would not be acted upon by the warp-threads if they did come in contact with the shuttle.

As the opening in the case through which the tumbler-finger projects is very narrow, the finger, by being brought into contact with the hand ofthe-operatororotherlargcobjects,either before or after the shuttle is placed in the loom, will not be acted upon sufliciently to release the hook and cause the delivery of the weftthrcad to be interfered with, because the finger must be depressed more than can possibly be done by the hand or anylarge object with which it can come'in contact moving slowly.

The operation of the device may be thus described: When a shuttle with my improvement attached is in use in a power-loom, if a warpthread breaks and becomes entangled with the adjacent warp-threads, instead of continuing to weave and form a pick-out until arrested by the attendant, the loom is immediately stopped by the threads of such imperfect shed dragging over the top of the shuttle and coming in contact with the projecting finger of the tumbler. The latter, when thus arrested by such imperfectly-shed threads, will, owing to the speed of the shuttle, be given a contrary movement with velocity and momentum sufficient to withdraw the hook from under the stop, as described, when the hook will be projected out from its case and will catch the filling-thread as it is being unwound and circles IOU about the cop or bobbin spirally towzfrd the eye, and break it. Then, by the action of the ordinary stop mechanism in use upon powerlooms to stop them when the filling is broken, the loom is stopped. I am thus enabled to prevent the making of bad or uneven places in the cloth, and, by the automatic stopping of the loom, make it possible for an operator to attend a greater number of such machines.

What I claim as new and of my invention 1. In a loom-shuttle, the combination ofthe shuttle-body A, spring-hook s, and stop k, with the tumbler 0, provided with a finger, f, and link m, substantially as described.

2. The combination of a shuttle-body, a spring-hook, a case containing the hook, and

a stop for retaining the hook within the case, with a tumbler acting upon the hookand a mechanism connecting the tumbler with the 20 hook, substantially as described.

3. In a loom-shuttle, the combination of a shuttle-bod y, a spindle, and a stop and springhook. which, when released, will be projected within the path of the thread being unwound 25 from a cop on the spindle, with a finger provided with a connecting-link, which finger extends above the level of the shuttle and releases the hook, substantially as described.

JOHN RIGBY.

Witnesses ALBERT M. Mooim, NATHENIAL HILL.

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