Patent GB-190306610-A (GB)
Title: Improvements in Looms for Weaving Provided with Fast Reeds.
Inventor: SCHRANS CHARLES
Filed: 1903-03-21
Granted: 1904-03-17
Abstract: 6610. Schrans, C. March 21. Loom stop-motions; frogs; back-rests.-In looms provided with fast reeds, should a shuttle become trapped in the shed, the loom is stopped, and to avoid damage, the warp extended for weaving, the woven cloth near the fell, and the temples, if any, are released and moved forward to permit the shuttle to be moved forward by the lay. When the shuttle is trapped, the stop-rod fingers c engage with sliding frogs a, on which hooks ware pivoted. The hooks w engage with arms x on a shaft y, which is thereby turned until the hooks ware raised by projections acting on inclined faces on the hooks. When the shaft y is turned in the direction shown by the arrow B, an arm 2 upon it acts through a connecting-rod on a lever 6, pivoted at 7, so that its upper part 8 acts upon an adjustable projection 9 on the setting-on handle 10, which is disengaged to stop the loom. At the same time the arm 2 acts through a connecting- rod 4 to release a pivoted catch lever 11 from engagement with a quadrant 14 mounted fast on a rock-sbaft 15, on which are mounted arms 16 and brackets 21 carrying the back-rest 17 and a tension rod 22. The back-rest 17 may be oscillated in the ordinary way by a lever and a cam on the crank shaft 20. When the quadrant 14 is released, the weight of the back-rest and the tension of the warp threads turn the shaft 15 in the direction indicated by the arrow D, so as to slacken the warp threads C. When the handle 10 is released, a projection on it passes from under an incline on a pivoted lever 34 which normally supports a rod 35 with a stop 37. The stop 37 is lowered, and a pivoted lever 36, resting on it, falls, and acts through a rod 39 on a brake lever 40, so that a brake block 42 is pressed against a wheel 43 on the crank shaft 20. When the frogs a are moved forward, their ends act as levers e pivoted at f. Projections on the upper ends of the levers e act on levers i, pivoted at j, so as to move back their upper ends which carry a rod l. As the rod l is moved backward, it acts upon straps p, attached at their front ends to overhanging brackets o, and at their other ends to the ends of a rod q upon which the temples r are mounted, and which is supported by springs s. The temples r are thus moved forward against the action of the springs s, and pull forward the woven cloth and warp threads C, thereby preventing the trapped shuttle from causing injury to the cloth, or the warp threads, or the loom. When the trapped shuttle is removed from the shed, a portion of cloth is, if necessary, unwound from the cloth beam, and the shaft 15 is turned to replace the back-rest 17 by means of a lever, connecting-rod, and hand-lever. At the same time the rod l is pulled forward to return the arms e and frogs a, and the backward movement of the frogs a replaces the hooks w and the other parts. The setting-on handle 10 may then be moved to start the loom, and remove the brake-block 42 from the wheel 43. Another arrangement is described, in which the arms e carry a rod over which the cloth passes. This rod is connected by adjustable rods to the temples r, so that when the frogs a act on the arms e, the temples are moved forward. Loom guards.-The adjustable rods mentioned above carry guard-plates extending from near the temples r to the breast beam n, so as to protect the hands of the weaver from being hurt between the temples r and the breast beam. Loom breast beams.-In the Provisional Specification, it is stated that in the application of this invention a fixed cross-bar may be used conveniently instead of the usual " twitch roller," and serve as a rail or connection between the side frames of the loom instead of the ordinary breast beam, which is not used.