Patent GB-190800481-A (GB)
Title: Improvements in or relating to Machines for Winding Yarns, Threads and the like
Inventor: WARDWELL SIMON WILLARD
Filed: 1908-01-08
Granted: 1909-01-08
Abstract: 481. Wardwell, S. W. Jan. 8. Winding-machines.-A winding. machine designed to produce a yarn or thread cop A, Fig. 3, having a core or base B with a flat conical end C and formed of a series of graduated overlapping windings, and a body D having a tapered nose and formed of uniform windings, as described in Specifications No. 19,974, A.D. 1906, and No. 480, A.D. 1908, is shown in Figs. 1 and 2. The building up of the base of the cop is effected as follows:-The bobbin 2 is mounted on a winding-spindle 3 provided with fast and loose pulleys 4, 5 and connected by gearing H to a spindle 13, on which is mounted a stepped cam 9 with concentric tracks 10, 11, 12 of graduated slope, adapted to produce a winding of the universal-wind type. An arm 14 has a stud 15 adapted to engage with the camtracks, and the arm is fixed to a traverse bar 6 mounted in bearings 20 and carrying the yarnguide holder 7. A contact-arm 21, Fig. 4, mounted on the transfer bar 6 bears on the core of the cop, and a frame 22 is connected to the arm 21. The arm 14 has a lip portion 24, Fig. 5, engaging with the frame 22, which carries a ratchet plate 25, the teeth 26 of which are adapted to engage with a spring-pressed plunger 28. As each winding is completed, the contact-arm is pressed outwards and causes the ratchet plate to be moved one tooth, and the stud 15 to be transferred to the next cam-track, by the pull of the spring 16, and so on, until the base is complete. The body of the cop is then formed by continuing the winding with a uniform traverse, which has a progressive longitudinal displacement. This is effected by advancing the yarn-guide holder along the traverse bar 6 by steps. The bar has an extension 35 with partial and eccentric screw threads, with which a nut 38 engages. The rim, of the nut contacts with the base of each winding at the end of each double traverse, and causes a partial rotation of the nut and a corresponding advance of the guideholder: When the cop is complete, the machine is stopped as explained below. A safety stopdevice is shown in Figs. 1, 2, and 4. The yarn 48 passes through guide-eyes 49, 50 on a rocking frame 70, pivoted on the guide-holder 7. The outer end of the frame extends under a wire bail 72, Figs. 1 and 2, mounted on the traverse bar 6, and the bail is pressed against the frame 70 by a spring. The bail has a downwardly extending curved arm 76 bearing on a pin 78 projecting from a stud 79, which is formed with a lock 67 for the belt-shifter 65. The curved end of the arm 76 allows for oscillations due to slight variations in tension, but when the thread breaks, the frame 70 tilts, frees the arm 76, releases the pin 78, and so allows the stud 79 to rotate and unlock the beltshifter, which shifts the belt on to the loose pulley. To stop the machine when the cop is complete, an offset portion 81 of the bail 72 is acted on by the guide-holder, and causes the bail to rock and release the arm 76 from the pin 78, and so unlocks the belt-shifter as described above. The beltshifter has an upper hinged part, which may be rocked relatively to the lower part, and so frees the lock. By means of a bowed spring device and an enlarged bore, the hub 38, Fig. 1, may be disengaged and slid along the traverse bar 6 by Ihind to start the winding. An alternative guide-holder feeding-device is shown in Fig. 8. The nut 38 is formed with a ratchet 51 adapted to be advanced step-by-step by a pawl 54. The pawl engages with an eccentric 53 on a friction roller 52, which receives a partial rotation as it contacts with the base of each winding at the end of each double traverse. Another form of ratchet feed is operated by the oscillation produced by the travelling of the yarn guide up and down the taper of the cop.