Patent GB-721819-A (GB)
Title: Bobbin winding machine
Inventor: JOYCE GLOVER CARLTON
IPC: B65H54/14
Filed: 1953-01-30
Abstract: 721,819. Winding yarn. WHITIN MACHINE WORKS. Jan. 30, 1953, No. 2801/53. Class 120 (2). A bobbin winding machine comprises a winding spindle and means to rotate it, a thread guide and carriage therefor, means to oscillate the guide in the carriage, means to shift the carriage progressively towards the tip of the bobbin, automatic means to vary the rate of progressive shifting of the carriage as winding proceeds and automatic means to stop the winding operation at the end of a predetermined extent of carriage shift. The motor M, through a clutch, a pulley 192 and a belt 63 drives the winding spindle 65 and hence the bobbin N the tip of which is supported in a retractable tail stock 233. Worm gearing 66, 67 drives a shaft 62, which, through gearing 195, shaft 196 and gearing 197, drives a shaft 154 formed hexagon. ally towards its free end and upon which is slidably mounted a cam 155 which oscillates the traverse guide G about an adjustable pivot. The traverse cam 155 has a double-throw groove the reversing points being spaced axially of the cam to position the yarn turns laid in the one direction between those laid in the opposite direction and the adjustment of the traverse thread guide arm pivot is such that the arm always swings back to the same relative disposition in regard to the butt of the bobbin. The thread guide G is supported in a carriage 150 advanced towards the tip of the bobbin by rack and pinion gearing 55, 56 operated from the shaft 62 through adjustable units A and B, unit A comprising adjustable pawl and ratchet gearing 74, 77 and unit B comprising a camcontrolled means for varying the rate of advance of the rack 55 so that whatever the taper of the bobbin N, a cam 108 may be selected to slow down the advance rate to produce a wound package having a cylindrical outer periphery. The unit A, driven by gears 60, 61 comprises a fixed and an adjustable cam 80, 81 each having high and low contours which may be angular set so that as the followers 90 (not shown) and the pawls 74 drop into the adjustable space between the high contours, the pawls advance the ratchet wheel 77 and so advance the sprocket 57. This sprocket through a sprocket and chain gearing drives a pin 92 in a circular path about the axis of a shaft 95. The pin 92 carries two pinions 96, 97, differing by one tooth, which engage internal gears 100, 101, the gear 100 being normally stationary and the gear 101 thus driving slowly a gear 105 which, through the gear 56 advances the rack 55. The gear 100, however, is slowly moved during the building of the bobbin, by the rotation of a replaceable cam 108 which bears on a lever 107 attached to the gear 100 so to lessen the advance rate of the carriage. When the bobbin has attained a predetermined size, the carriage 150 swings a lever 211 to release a latch 200 to allow a cam shaft 131 to make a single revolution. The cam shaft 131 is driven by the motor M through a belt 182, shaft 181, gearing 184, 185, and belt 188. During its revolution, the cam shaft, through a cam 130 and connections such as 207, 208, 209, pivots the gear 105 into an out-of-mesh position with regard to the gear 56 and stops the advance of the rack 55. A further cam 220 on the shaft 131, through a rod 223 releases the motor clutch and applies a brake to the driving pulley 192 which then stops the shaft 65 and the operation of units A and B. A third cam 230, through connections 231, 232, withdraws the tail stock 233 and allows the wound bobbin to fall out of the winding station. Reloading may be effected manually or by any suitable mechanism. In a modification, an adjustable lever linkage may be interposed between the cam 108 and the gear 100, so to avoid replacement of the cam 108 to meet the condition that a bobbin of different taper is to be used in the machine.