Patent GB-831945-A (GB)
Title: Improvements in or relating to stop motion mechanism for high speed textile winding machines
IPC: B65H63/036
Filed: 1955-06-17
Abstract: 831.945. Stop motion mechanism. HOLT Ltd., T., and BRIERLEY, E. Sept. 17. 1956 [June 17, 1955],No. 17499/95. Class 120(2) Stop motion mechanism for high speed textile winding machines in which the package being wound is driven by contact with a rotary driving drum or roll, comprises a detector wire 10 formed at one end with a finger 101 for contact with the yarn and at its opposite end secured in a block 11 pivoted at 111 and serving as a counterweight and furnished adjacent to the pivot with a latch 13 adapted to engage with the upper end of a latch bracket 14 pivoted at 141 and furnished with a projecting stop pin 15 adapted to be engaged by the hook end of a wire 16 projecting through a slot in the latch bracket 14 and resting on the stop pin 15, the wire 16 being furnished at one end with a disc 16 having a short spindle 162 extending on opposite sides of the disc which fits in a bifurcated end of the lower arm of a bell-crank 17, the spindle projecting through registering slots in the jaw of the bifurcated end which jaws are furnished with a swivel link 18 composed of L-shaped plates pivoted one on each side of the jaws, the upper arms of the link providing bearings for the spindle of the disc while the lower arms extend towards the rear of the winding head and are furnished at their extremities with a roller 19; a beater 21 having a semi-circular groove 211 located adjacent to and at the rear of the swivel link and adapted to be oscillated to and fro; and a bar 23 located below and parallel with the hookended wire and connected at one end to the pivot of the swivel link and at the opposite end supported in a slot 241 in an angle bracket 24 secured to the machine frame and furnished with a roller 231, the underside of the bar being formed with a notch adapted to engage a detent in the angle bracket. In operation should the yarn Y break the detector wire 10 pivots by reason of the weight 11 thereby oausing the latch 13 to release the bracket 14 which falls by virtue of its attached weight. The detector returns to the winding position automatically and remains there. In falling the latch bracket 14, by engagement of the pin 15 with the hook end of the wire 16, pulls the wire and lifts up the swivel link 18 to bring the roller 19 into the path of movement of the oscillating beater 21 which strikes the swivel link and so rocks the bell-crank 17. The tooth 173 on bell-crank 17 engages in the toothed nuadrant 34 to turn the quadrant and so lift the package P out of contact with the winding roll 31 stopping the winding. The hooked wire 16 and the bar 23 are moved back by the movement of the lever 17 until the notch 232 engages the detent 241 in bracket 24. Thus as the beater 21 returns the bar 23 is held by the notch 232 thus holding the package P free of the winding roll 31. The link 18 falls by gravity so taking the roller 19 out of the path of beater 21. When the yarn has been pieced-up the starting handle 25 is depressed. In its initial movement the handle lever part 28 permits weighted bracket 29 to fall on to the detector wire and hold it in the winding position. Further movement causes the lever 28 by means of its toe-piece 281 to release bar 23 from its detent whilst at the same time the screw 282 lifts the latch bracket 14 until its upper end is engaged by the latch 13. The toe-piece 281 allows the bar 23 to slide back to the winding position to allow the package P to fall on to the winding roll 31 as the starting handle 25 returns to its original position and winding re-commences.