Patent GB-522948-A (GB)
Title: Improvements in ring-spinning machines, ring-doubling machines and like machines for winding yarn or thread on spindles or other bodies
IPC: D01H1/36
Filed: 1938-12-20
Abstract: 522,948. Spinning yarns. PLATT BROS. & CO., Ltd., HUGHES, J., and WATSON, W. H. Dec. 20, 1938, No. 36989. [Classes 120 (ii) and 120 (iii)] A ring spinning, doubling or like machine has mechanism which is controlled in operation of the building motion and, on the completion of the winding, automatically effects the winding- down of the ring plates, a visual, audible, or a visual and audible signal being given when the winding-down operation is completed and the machine stopped. As shown the building-motion chain 18 passes over a guide roller 17 journalled in a bracket 14 in a vertical shaft 12 having a screw-threaded portion 12a engaging a nut 13 rotatably mounted in the bracket 10 but prevented from moving vertically. The nut 13 carries a bevel pinion 19 engaging a pinion 20 on a shaft 21 disposed at right-angles to the shaft 12 and having a squared portion carrying a handle and the pinion 20 engages a pinion 40 mounted on a shaft 38 and carrying a slidable clutch member 41, the complementary clutch member 37 being carried by a spur pinion 36 driven from the front roller shaft of the machine through change gearing 27 ; by altering the change gearing the speed of winding-down may be varied to suit the counts of yarn being spun. The clutch member 41 is engaged by a fork 51 on a shaft 42 and the fork 51 is normally held in the position to hold the clutch members disengaged by a catch rod 57 slidably mounted in the frame and forced by a spring 60 to engage a detent arm 51b on the fork. The shaft 42 also carries a double-armed lever 44 and an arm 51a, the arm 51a carrying a pendent slotted link 54 engaging a pin 55 on the side of a bracket 24 and carying an adjustable stop 56 and the lower arm 44' of the lever 44 being connected to a coiled tension spring 46 and the upper arm being connected by links and levers 74, Fig. 4, to a lever 71 carrying a hinged latch 72 normally urged by a spring 73 into contact with one edge of a spring-influenced pivoted gate 70 arranged in proximity to a starting-switch handle 65 which is formed with a boss 66 carrying a stud 67 adapted to be engaged in one of two notches 68, 69 in the gate 70 and corresponding respectively to the "on" and "off " positions of the handle. In operation the shaft 21 is turned to lift.the shaft 12 and ring plates and the handle 65 is moved to the " on " position for spinning with the latch 72 yieldingly held in contact with the edge of the gate 70; as winding proceeds the builder chain 18 carries a peg 64 thereon downwards until the peg engages on a stop 62 on the rod 57 which is then moved away from the detent arm 51b on the clutch fork 51 and the lever 44 is rocked by the spring 46 so that the clutch member 41 is slid along the shaft 31 into engagement with the rotating clutch member 37, the nut member 13 being then rotated and moving the shaft 12 downwards to allow the ring plate to move downwards gradually. Simultaneously, the movement of the lever 44 causes the latch 72 to rise until a projection 72a on its face engages the upper end of the gate 70. When the ring plates are in the correct position for doffing the pin 55 on the bracket 14 engages the stop 56 and presses the link 54 downwards to rock the fork 51, disengage the clutch members and stop the downward movement of the shaft 12 ; the lever 44 is also rocked and through the links &c. 74, the lever 71 is rocked so that the latch 72 is caused to pull the gate downwards about its pivot 68a, the projections 67 on the starting handle being withdrawn from the notch 68 and the starting handle 65 being moved to the " off " position and the machine stopped. A chain 89, Fig. 6, connected to the bracket 14 passes over a pulley 88 on a fixed bracket 85 and is connected to the end of a rod 84 slidable in the bracket and carrying a signal disc 86 normally housed in the cover of the machine; when'the shaft 12 has lowered the ring plate to the doffing position the disc 86 has been pushed upwards through an aperture in the cover and gives a visual indication that the machine is ready for doffing; the disc 86 in its passage through the cover may operate a bell or other device and an illuminated signal may be provided. The initial position of the peg 64 relatively to the stop 62 determines the point at which the winding is completed.