GB437556A - Improvements in or relating to yarn or like winding machines - Google Patents

Abstract

437,556. Winding yarns. UNIVERSAL WINDING CO., 95, South Street, Boston, U.S.A. Dec. 15, 1934, No. 36040. Convention date, April 27. [Class 120 (ii)] In a yarn or the like winding-machine, the yarn is traversed longitudinally of the bobbin &c. which is carried by a holder moved progressively endwise as the winding proceeds by a bell-crank lever, one arm of which engages the periphery of the wound yarn package and the other arm engages the holder to move it endwise. As shown the yarn is wound on a bobbin B, Fig. 2, having a conical base h and the wound yarn is engaged by a polished roller 85 carried by anti-friction bearings in a yoke 84 freely pivoted in one arm 71 of the bell-crank lever 71, 72, the other arm 72 of the lever carrying a bowl engaging the groove 50 between a pair of collars 49 on the holder or tube 40 carrying the bobbin B. The arm 71 is pivoted by a stud 82 to a hub 73 of the arm 72 so that the arm 71 may be swung upwards to take the roller 85 out of the way of the bobbin for doffing the wound package or placing a fresh bobbin on the tube 40 ; a lug 83 on the arm 71 engages the hub 73 in the operative and inoperative positions of the roller 85. The hub 73 of the bell-crank lever is pivoted in the downwardly-extending portion 68, Fig. 5, of a bracket 64 by a shaft 75 and is swung to maintain the roller 85 in contact with the yarn being wound by a spring 78 coiled around the shaft 75 with one end engaging the hub and the other a collar 76 adjustably fixed to the shaft to control the tension of the spring; the brackets 64 for a number of winding heads are fixed to the longitudinal tie rods 62 connecting the heads. The conical bobbin B is positioned on the tube 40 by a collar 51 adjustable on the tube and engaging the inside of the conical base h and the bobbin is held on the tube by a spring 54 having bowed portions 55 engaging the bobbin and limbs lying in grooves in the tube, the limbs being connected by a portion 56 lying in a diametral slot formed in the end of the tube. At the start of the winding the innermost collar 49 of the tube abuts against the usual brake wheel 48 fixed to the winding spindle and the outward movement of the tube is limited by a pin 47, fixed across the end of the spindle 41, engaging the end of a counterbore in the tube which is rotated by the spindle through keys 45 in the spindle engaging a key-way in the tube. The traversing guide 25 is bevelled at the side 24 so that it may move into proximity to the conical base h of the bobbin.