Patent GB-963870-A (GB)
Title: Machine for winding electrical solenoid coils
IPC: H01F41/06
Filed: 1963-05-01
Abstract: 963,870. Coiling. NATIONAL CASH REGISTER CO. May 1, 1963 [July 2, 1962], No. 17261/63. Heading B3E. [Also in Divisions F2 and H1] A machine for winding electrical solenoid coils includes a table adapted removably to support a plurality of regularly spaced solenoid form pins, apparatus for supplying individual electrical conductors to a feeding device for feeding said conductors to associated ones of the form pins, and a driving mechanism coupled to the table and to the supply apparatus so that the table is rotated about the feeding device to cause the individual conductors to be wound about their form pins and the supply apparatus to be rotated to cause a twist to be applied to the conductors to counter the twist imparted thereto on being wound upon said form pins. A solenoid array 22 in rows of solenoids 20 is formed by winding wires 32 each on a pin 26 of rows of pins on a dieplate 25 a row at a time, corresponding pins in succeeding rows being wound by the same wire 32. After all the rows have been wound, the die-plate 25 with wound pins thereon is removed and the array 22 is invested in a solid dielectric material. After curing the array is removed from the plate 25 and pins 26 to provide a solenoid panel. Solenoid panels so produced may be stacked, with magnetic rods inserted through corresponding solenoids in each panel, to form a magnetic rod information store for an information processing system. The plate 25, with the pins 26, is supported by a block 27 on an indexing table 36, slidably supported on a table 34 given a circular oscillation by eccentrics 81 on driven shafts 80. To wind one row of pins 26 wires 32 pass from individual reels 52 which braked by means 114, Fig. 12, and are rotated about the axis of the wire 32, by a belt 110 driven from a main shaft 50, to prevent twisting of the wires during coiling. The wires 32 are pulled through apertures 31a in a guide plate 31 and through feed tubes 29, Fig. 8d, on a head 28 to the pins 26. As the table 34 is rotated by the eccentrics 81 so that the pins 26 move around their respective feed tubes 29, the head 28 and thus the tubes 29 are raised by cams 100 on a shaft 63 driven from the shaft 50 so that each wire 32 coils in a helix on a pin 26 of one row. On completion of the winding of one row of pins 26 the table 36 is indexed to present the next row of pins 26 to the head 28, a follow bar 54 coupled to the head 28 through spring and lever means 105, 102, 103 positioning the wires 32 against the plate 25 at the beginning of each row winding, Fig. 8d. The horizontal indexing movement of the table 36 is effected by springs 58 under control of an escapement assembly 60 (Division F2) including rack means 59 and an escapement member 71 actuated by engagement with a tripper pin 70 on a driven shaft 68, or by manually-operated lever means 94, 96. During the indexing of the table 36 the rotation of the table 34 is interrupted by taking the drive to the shafts 80 from a segment gear 66, on a continuously driven shaft 64, which engages a gear 83 on a shaft 82 driving the shafts 80, the gear 66 having a spring-urged segment 66a. An alternative solenoid array, Fig. 9a, may be formed by passing the plate and pins 126 through the machine a second time, after having rotated the plate and pin assembly 90 degrees, so as to form two layers of solenoids, with the windings either over or. above one another. In another embodiment of the machine, Fig. 15, individual solenoids 230 can be wound with an adjustable number of turns on a row of pins 226. The pins 226 are supported by an oscillated table 234 below a feed tube head 228 urged upwardly by a spring 205 under control of a lever 206, having an adjustable fulcrum 207 and rocked by a cam follower 203 actuated by a cam 200 on a shaft 238. The number of turns wound on the pins 226 is determined by the rotation of the shaft 238, this being driven through a segment gear 240 comprising two overlapping segments, adjustable to vary the arc of the gear. At the same time the rotation of the shaft 238 is stopped a cam 244 thereon, also comprising two adjustable overlapping segments, operates a microswitch 246 to stop the machine. A block 247 on the end of the shaft 238 holds the shaft in its rest position. A support 214 for the table 234 is pivoted at 215 to allow a stripper plate 225 to remove the wound solenoids from the pins 226.