Patent GB-474738-A (GB)
Title: Improvements in and relating to cop winding mechanism
Inventor: REINERS DR WILHELM
IPC: B65H54/14
Filed: 1936-04-01
Abstract: 474,738. Winding yarns. REINERS, W., (trading as SCHLAFHORST & CO., W.). April 1, 1936, Nos. 24243/37 and 26076/37. Convention dates, April 2, 1935 and Aug. 17, 1935. Divided out of 474,667. [Class 120 (ii)] A cop-winding machine has independent mechanism by which the rotation of each spindle is automatically stopped on completion of the cop thereon and the cop is automatically doffed independently of the progress of the winding on other spindles ; the spindle is automatically restarted for the winding of a fresh cop after the doffing of the completed cop and the spindle, before stopping, rotates during part of the doffing operation so that yarn is drawn from the supply and wound on the spindle for the starting of the fresh cop. As shown in Fig. 1, the spindles 4 are driven through clutches 125 by bevel gearing from the shaft 1 and the yarn is laid thereon by the yarn guides 14 which are oscillated by resilient connections 35 from a common shaft 138. The cop as it is formed is pushed along the bare spindle 4 by a conical cup 219, or cones, fixed to a rod 222 and the cop is pressed into the cup by a conical counterhead 220 on a bracket 221 sliding on the rod 222 and fixed to a rack 225 engaging a pinion 226 loose on the shaft 39 and controlled. by a weight 247. When the cop is completed a pivoted detent lever 241 is actuated by the rod 244 carried by the bracket 221 and allows a spring-controlled sliding dog to couple the cams actuating the doffing and donning means to a member fixed to the shaft 39 ; the cam 228 carrying a pivoted lever 231, normally held by a spring against a fixed cam 235, then rotates and the lever 231 engages a projection 230 on the pinion 226 which is rotated to move the rack 225 and head 220 to the right away from the cop which is doffed by the cup 219, the rod 222 carrying the cup having a collar 223 which is engaged by the bracket 221. As soon as the cup 219 has started its doffing movement and is beyond the range of the yarn guide 14, the spindle 4 rotates and the yarn guide oscillates to lay a few turns on the bare spindle until the cam 228 moves the lever 227 to hold the guide from oscillating and a cam 238 actuates a lever 128, 129 to disengage the spindle clutch 125 and stop the spindle while the thread between the spindle and the completed cop is severed by cutters 109, 110. When the yarn breaks or the supply fails the detector lever 27 disengages the spindle clutch and the cop is pushed out of the cup, so that the yarn can be pieced, by pulling forward a rod 213 connected to the spindle 4 ; the tension of the pieced yarn causes re-engagement of the spindle clutch and the spindle is returned to its normal position and held there by a pawl 214 engaging a notch 217 in the rod 213. In a modification, the spindle is driven through a clutch by bevel gearing from the shaft 1 as before but the yarn guides are oscillated from a shaft common to all the spindles and driven from the shaft 1 and the doffing and donning means are driven by cams on individual shafts geared to the shaft 1 through the sliding dog clutches which are individually spring- engaged on the completion of a cop and cause the doffing of the cop as before.