US922718A - Loom. - Google Patents

Description

W. 0. PERRY.

LOOM.

APPLICATION FILED MAR. 30, 190B.

922,7 1 8-, Patented May 25, 1909.

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UNITED PATENT LOOIVI.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed March 30, 1908. Serial No. 424,185.

To all whom it may concern:

Be it known that I, I/ViLLIAM C. PERRY, a citizen of the United States, residing at Charlestown, in the county of Washington and State of Rhode Island, have invented certain new and useful Improvements in Looms, of which the following is a specification.

My invention relates to improvements in looms intended for weaving narrow fabrics, such as elastic and non-elastic webbing, or tape; and its essential objects are to improve the construction and operation of the edge wires and their connected cords, and to provide a stop motion in the loom particularly adapted to cooperate with edge wires or their connections.

The cords or connections of edge wires have not heretofore possessed elasticity or extensibility, but have consisted of sections of cord knotted together intermediate their length at a point difficult of access, when occasional dragging in the weave or other emergency demanded a manual change of the knot of hitch. The unavoidable slack of the cord developed its vibration or threshing, resulting in the violent withdrawal of the edge wire from the web which damaged both web and loom. The withdrawal of an edge wire is often occasioned by the continued travel of the web or weave after the shuttle filling has been exhausted, and sometimes by other causes.

My invention consists in imparting elasticity to the cords of the edge wires; in providing a readily operative and accessible means for adjusting the length of the cord in providing means for stopping the loom when the wires are accidentally withdrawn from the web.

Invention consists further in the features, combinations, and details of construction hereinafter described and claimed.

Edge wires will herein be understood to include forming wires used in intermediate portions of the web, as well as upon the web margins.

In the accompanying drawings which constitute a part of this specification, Figure 1 is a plan of the end portion of a narrow fabric loom embodying my invention, with parts of the loom not germane to the invention omitted. Fig. 2, an end elevation of the same. Fig. 3, a front elevation of the same. Fig. 4, an enlarged plan of a part of the struc- I ture shown in Fig. 1. Fig. 5, a section taken i on line x x of Fig. 4, and 6, a rear elevation of a portion of the rear of the loom.

Like reference characters indicate like parts throughout the views.

My invention is shown in conjunction with parts of a narrow fabric loom comprising the frame, 1, front bar, 2, back girth 3, loom shaft 4, shaft pulleys, 5 and. 6, heddles, 7, lay 8, warp spools 9, spool beam 10, spool bracket 11, and warp rods, 12 and 13. Upon the back girth of the frame are located indicator boxes, 15, traversed by the rod, 16, upon which are loosely pivoted intermediate their length and forward of their centers a plural ity of indicators, 17. The forward ends of the indicators are upturned and provided with longitudinal grooves, 19, to receive a thread or wire; while their rear lower portions are rectangular as at 20 to adapt them when falling to engage shoulders or pins, 21, of a sleeve, 22, fixed to a rotating shaft, 23. In Fig. 5, an indicator is shown in broken outline thus engaged.

Cooperating with the shaft, 23, is the shipper operating mechanism resembling somewhat that described. in my Patent No. 890,093. This comprises a loosely mounted pulley, 24, upon shaft, 23, driven by belt, 25, from pulley, 5. Upon the inner face of pulley, 24, are V-shaped projections, 26, registering in cavities, 27, in an adjacent collar, 28, fixed to shaft, 23. Upon the outer face of pulley 24 are rollers, 29. 30 is a second collar fixed on shaft, 23, and 31, a spring on the shaft pressing against the collar and pulley, 24, to normally force projections, 26, in cavities, 27. A bracket, 32, mounted on the frame supports the end of shaft, 23. Pivoted on this bracket isv one arm of a lever, 33, in the path of the rollers, 29, when the pulley is in disengaged position. To the other arm of lever, 33 is a rod, 34, connected with an arm, 35, fixed to a rock shaft, 36, mounted on the side of the frame, having a second arm, 37, fixed to its front end, which is connected by a rod, 38, to an arm of a bell crank lever, 39, pivoted to the front of the frame. The other arm, 40, of lever, 39, is fixed to a spiral spring, 41, attached to the frame, and has a lug, 42, adapted to engage a plate, 43, upon the shipper rod, 44, of the loom. The dropping of an indicator, 17, stops the shaft, 23, thereby throwing pulley, 24, outwardly by virtue of the unseating of projections, 26, whereby the projections, 29, tip the lever, 33, thereby shifting the shipper rod, 4 1, through the lever connections described, and stopping the loom. It will be understood that for the lever, 33, may be substituted the shipper rod shown in my application above referred to.

For the purpose o1 illustrating this invention, the elastic warp only is sl1own, which consists of the warp threads, 47, extending from the web, 49, across the loom beneath the warp rod, 13, and passing through slits or holes, 50, in the front wall of boxes, 15, and channels, 19, 01' the indicators, 17, and holes or slots, 50, in the back 01' the boxes to the warp spools, 9. The forward portions of the edge wires, 51, are sustained in the web, 49, by the filling or weft threads, 52. The Web, 49, as it increases in bulk is advanced relatively to the edge Wires over the bar, 12, by the usual mechanism.

The rear ends of the wires are provided with loops, 53, to receive the forward ends of the cords, 54:, which also pass beneath the rod, 18, slits or holes, 50, channels, 19, and holes, 50, and have their ends looped or wound around vertical projections, 55, upon the back of the boxes, 15. A spiral spring, 56, has its ends provided with loops or eyes, 57, 57. The spring is connected with the cord intermediate its length as follows: The cord, 54, is en aged by knots, 58, 58, to the eyes, 57, and passes longitudinally through the spring, 56. The portion, 59, of the cord within the spring is normally slack, or of greater length than the spring in order to permit free expansion of the spring to the imit of the slack of the portion 59 of the cord, thus, while permitting suiiicient elair ticity to successfully meet shocks and vibrations, yet by exhausting the slack preventing the excessive travel of the edge wire in the web and preventing the spring from being extended to the limit of its exaansion and thus rendering the latter worth ess.

It will be observed that the disengagement of a wire, 51, from the weave releases its cord and corresponding indicator, thereby sto ping the loom as described.

he spring maintains the cord in unflexed position regardless of any vibration of the loom parts, thereby eliminating threshing and violent dislocation of the end wire. The

tension. of the spring is readily and conveniently adjusted manually by releasing or tightening the end of the cord wound around the projection, 55.

My novel edge wire device is applicable to looms of all kinds in which edge wires are employed.

lVhat I claim is 1. In device of the character described, the combination with an edge wire, of a spiral spring, a cord attached to the wire and assing lon itudinally through the spring and attached to the ends of the spring, the portion of the cord within the spring being greater in length than the spring;

2. In a device of the character described, the combination with an edge wire, of a cord attached to the edge wire, a spring having its ends attached to the cord, the portion of the cord between the ends of the spring being normally slack.

3. In a device of the character described, the combination with an edge wire, of a cord attached to the edge wire, a spring having its ends attached to the cord, the portion of the cord between the ends of the spring being normally slack, and a stop motion device adjacent and normally contacting with a portion of the cord outside the ends of the spring and adapted to be operated by the release of the edge wire.

4. In a loom, the combination with the frame, of a warp bar upon one side of the frame adapted to sup ort a web, a box upon the opposite side of tie frame, a projection upon the box, an edge wire adapted to beengaged by the web, a spring, a cord attached to the ends of the spring and extending through the same, and attached at one end to the edge wire and at the other end to the projection.

In testimony whereof I have aflixed my signature in presence of two witnesses.

WILLIAM C. PERRY.

Witnesses l lonArio E. BnLLows, WALTER LoUIs Fnosr.

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