Patent GB-376779-A (GB)
Title: Improvements in or relating to winding machines for threads, yarns and the like
IPC: B65H54/64
Filed: 1931-04-10
Abstract: 376,779. Winding threads on to golfball and like cores. SIBLEY-PYM CORPORATION, 429, Washington Street, Lynn, Massachusetts, U.S.A.-(Assignees of Pym, A. F. ; 46, Beach Bluff Avenue, Swampscott, Massachusetts, U.S.A.) April 10, 1931, No. 10613. Convention date, Jan. 10, 1931. [Class 120 (ii).] A winding machine having means for supporting and rotating a sphere, and a thread-guide leading thereto, is provided with means for detecting the zone of maximum diameter as the sphere is wound and automatically causing the sphere to assume another position. The thread is subjected to tension by an electromagnetic device. A core 100, Figs. 1 and 6, to be wound is disposed in the trough of a slack belt 93 running around pulleys 22, 40 and is pressed therein, during its rotation by the belt, by a freely running disc 92 having a periphery of convex section. The disc 92 is in line with a thread-guide 115 and whenever the winding produces a zone on the sphere or core of greater diameter than elsewhere, the equilibrium of the disc and core becomes unstable and the disc displaces the core until it engages a zone of less diameter thereon and thereby aligns the zone with the thread-guide, the continued displacement of the zone of maximum diameter producing a spherical ball. The machine comprises a face-plate 14 in which is journalled a main shaft 20, Fig. 3, carrying the pulley 22 and extending through a boss 18, formed on the back of the plate, into a clutch casing 50 secured to the shaft 56 of a motor 13, the shaft 20 being journalled in the casing. A collar 63 fast on the shaft 20 is pinned to a collar 64 on a flanged sleeve 60 surrounding the shaft, and the flange is recessed at 58 to accommodate springs 72 which abut against a plate 62 located by a cover-plate 52 on the clutch casing 50. The plate 62 is slidable but not rotatable on the sleeve 60 and the springs 72 tend to thrust the flange of the sleeve against the face of the casing 50 to maintain the clutch in the operative position, the clutch, however, being normally held in the inoperative position by a lever 78 pivoted to an extension of the boss 18 and engaging the collar 64. This lever is drawn towards the plate 14 by a spring 84 but can be moved to permit the springs 72 to engage the clutch by a rod 88 and knob 90, a collar 89 on the rod being then engaged by a latch 87 to prevent return of the lever. The latch 87 is pivoted to one end of a bell-crank lever 85 which is adjustable by a screw 19 to raise or lower the pivot of the latch and the latch itself has an upstanding arm linked to a push knob 90 by which it can be manually lifted to free the collar 89. The adjustment of the latch raises or lowers a spring-pressed rod 95, Fig. 2, secured to it, the effective length of the rod being further adjusted by look nuts 103 at its upper end. These nuts are engaged by a weighted arm 97 secured to a shaft 98 to which is rigidly secured an arm 96, Fig. 1, carrying the rotary disc 92. As the disc rises with the growth of the wound ball, the arm 97 lifts the rod 95 to free the latch 87 when a predetermined thickness of ball has been wound. The clutch 50 is thereby disengaged and a brake shoe 82 engages the collar 64 to terminate the winding. Thread 140 is drawn from a reel on a support 135 carried by a hollow standard 134 and passes around a tensioning pulley 106 to the guide-pulley 115. A short shaft carries the tensioning pulley at one end and at the other an aluminium disc 110 of greater diameter and embraced by permanent magnets 121, 123, 125, 126 adapted to retard its rotation by forming eddy currents in it. Initial tension is adjusted by magnets 125, 126 on an arm 124 adjustable towards or away from the centre of the disc. As the winding proceeds, and the arm 96 is raised by the increasing size of the core, a slotted arm 118 on the shaft 98 raises a link 119 adjustably secured to it and the link raises an arm 120 carrying the magnet 121 automatically to increase the tension; simultaneously, a feeler 144, engaging the winding-off reel, descends as the reel empties and, through a supporting rod 145 disposed in the standard 134, lowers one arm 146 of a lever loosely pivoted on the shaft 98, the other arm 122 of the lever thereby withdrawing the magnet 123 from the disc 110 and so compensating for the reduced couple exerted on the drawing-off reel. When the machine is stopped, a brake 116 engages a perforated disc 108 rigid with the disc 110 to bring it quickly to rest. Reference has been directed by the Comptroller to Specification 303,271, [Class 120 (ii), Spinning, twisting, &c.].