Patent GB-270444-A (GB)
Title: Improvements in or relating to coil-winding machines
IPC: H01F41/06
Filed: 1926-02-22
Abstract: 270,444. Wade, H., (Universal Winding Co.). Feb. 22, 1926. Winding-machines; winding sheet material between layers of windings; thread guides.-Relates to machines for winding coils of wire, usually enamelled or covered wire, having layers of paper or other sheet insulting material between certain layers, of the kind comprising a set of feed rollers, and severing-means for the insulating material arranged between the feedrollers and the spindle upon which the coil is wound, the severed piece of material being drawn into the coil hy the grip exerted thereby, no feedmechanism being provided between the severing- means and the winding-spindle. The main shaft 3, Fig. 2 drives a counter shaft 13, which is geared with the cam-shaft 20 of the wire traverse mechanism, and a shaft 34, which is geared with the winding-spindle shaft 30 and carries a roller 70. Fig. 6, adapted to co-operate with a roller 71 to feed paper strips from a shoot 51, through severing-means to the coil C. The gearing is mounted in a box-frame 2, and the spindle gearing is enclosed by a cover 33 preferably constructed integrally with the bearing-caps 32. A shaft 87 driven by the cam-shaft 20 carries a cam 85, Fig. 6, which operates a lever 72 and brings the roller 71 thereon into contact with the roller 70 to feed the strip at the desired time, a follower 97 and an adjustable screw 98 determining the duration of contact. A cam 95, Fig. 9, also carried by the shaft 87, operates a lever 101 and brings a blade 100 thereon across a fixed blade 57 to sever the strip, the timing of the operation being determined by an adjustable follower 118. The blade 100 is provided with a pivot pin 106 with a rounded head so that it may rock slightly to align the fixed blade, and is provided with fingers 110, Fig. 5 to maintain the cutting edges in proper relation, a spring clip 108 holding the blade 100 on the lever. The wire w is guided by two pulleys 43 on an arm 42 adjustably mounted on an arm 44 secured to the end of a traverse rod 35, which is provided with a yoke 36 adapted to straddle a guida rod 40 so as to maintain the roller 37 in the groove of the traverse cam 25. A roller 125 mounted on a spring-controlled lever 126 presses on the coil and prevents wrinkling of the paper as it is wound. The paper-shoot comprises a sheetmetal back plate 51, Fig. 5, with marginal guides 53 and spring strip-retainer 54 and is supported on the fixed knife-blade 57 which also carries a paper-guide comprising an angular strip 61 and a plate 62, a cowl 64 being adjustably mounted so as to guide the strip across the plate 62. In a modification for winding larger coils, an expanding spindle 145, Fig. 10, is mounted in a casing 135, which carries the bearing caps 136 of a shaft 139 corresponding to the winding-shaft 30, Fig. 2, and bearings for the spindle gearing 141, 144. Guide pulleys 159, 160 for the wire are mounted in an elbow piece 158 carried by a spring-controlled guide arm 151, adapted to yield, if obstructed, and two pressing-rollers 163, 164 connected by a belt are carried by a spring-controlled arm 165, the outer roller being mounted in a pivoted extension 175 of the arm 165 so that both rollers are at all times maintained in contact with the coil. The paper-shoot is secured to the fixed blade 198 of the paper-severing device, and the marginal guides are adjustable by means of wire clamps 190. A cross strip 216 bowed inwardly is secured by screws to the shoot to retain the paper. An extension 206 is pivoted on a pin 209 on the main shoot and is suspended from the arm 165 by a wire 215 so that its upper end is maintained in proximity to the pressing- roller 163.