Improvements in Warp Stop Motions for Looms for Weaving.

摘要

4219. Koch, H. Feb. 20. Stop-motions, warp.- A warp stop - motion comprises a series of plates 9, Fig. 3, provided with teeth 91 and fixed on rods 7, and a series of plates 17 pivotally mounted on a reciprocating carriage 12. A current of air, issuing from a nozzle at the end of a tube 40 oscillating transversely to the warp, blows a broken warp thread down on to wires 4 passing through the teeth 91, and it is caught between one of the fixed plates 9 and a moving plate 17. The plate 17 is tilted, and a double-armed lever 18 connected to it raises a wire 19 and moves a lever 21, to slacken a cord 28 and allow a lever 26 to assume the position shown in dotted lines. A tongue 30 is moved into position to be acted on by an abutment 32 on the lay, and the loom is knocked off, a catch 34 holding the tongue 30 in position. The admission of air from a supplypipe 37 to the tube 40 is controlled by a valve having a spindle 51, Fig. 5, resting on a weighted lever 53 connected to a lever 56, one arm of which presses against the belt fork 36, so that the movement of the belt fork opens the valve or allows it to close. The tube 40 is oscillated from a shaft 43, on which is a yielding coupling consisting of a spring 47, Fig. 6, and a member 45 provided with pins engaging depressions in a member 46.