Patent GB-559531-A (GB)
Title: Improvements in or relating to electrical coil winding machines
IPC: H01F41/06
Filed: 1942-07-16
Abstract: 559,531. Winding wire. MILLER, J. W., and GOODMANS INDUSTRIES, Ltd. July 16, 1942, No. 9929. [Class 120 (ii)] In a machine for winding electrical coils the wire guide is mounted on a vertical spindle and pivots about the axis thereof to guide the wire to a former mounted in a rotatable chuck, the pivoting movement of the guide being produced by a cam or a series of cams which engages a pin secured to a slide mounted on a lever keyed to a vertical spindle carrying a second lever operatively connected to a third lever on the spindle carrying the guide; the wire is fed to the former so that the feed point to the former lags behind the turns of wire as they are laid on the former. As shown the wire runs from the supply through a hole 60 in the top of a container 53, containing an adhesive or insulating medium, and over a roller 61, rotatably mounted in the medium in the container, to a grooved spout 62 forming the wire guide projecting from the container; the former is mounted in a chuck 65 on the winding spindle 3 forming a continuation of a shaft 2 driven by the part 7 of a friction clutch, the other part being carried by a pulley 10 on a sleeve 9 slidable on the shaft 2; the sleeve 9 has a pointed end and when the machine is to be started, a starting lever 15 on a shaft 14 is pushed down to rotate the shaft and force a spring 13 at the end of the spindle against the end of the sleeve which is thus pushed inwards to engage the clutch members and cause the driving of the shaft 2 and spindle 3; the belt driving the pulley 10 is offset to assist in retaining the clutch members in engagement. A lever 68 on the shaft 14 is connected by a spring 67 with a lever 66 at the lower end of a vertical spindle 41 to which is fixed a sleeve carrying a coiled spring, one end of which is fixed to the sleeve and the other end to a lever 73 loosely mounted on the spindle and carrying a roller engaging a cam 25 on a spindle 24 rotatably and slidably mounted in a sleeve 22 driven by worm gearing from a shaft geared to the -spindle 3. The spindle 24 has a hardened end engaging a cam 27 on the shaft 14 and when the latter is rotated, the cam 27 lifts the spindle 24 so that a tooth 26 on the cam 25 engages one of a series of radial recesses in the worm wheel 21, the spindle and a cam bar 28 carried thereby being consequently rotated and a groove 32 in a cam or a series of cams in the box engaging a pin 35 projecting from the slide 36 mounted by pins and slots on the lever 37 keyed to the vertical spindle 42 also carrying an arm 44 having a bevelled end engaging the bevelled end of a spring-pressed flange' 47 'in a box 48; as the shaft 14 is rotated, a lever 70 thereon is also moved out of engagement in the notch in the lever 66 which is moved by the spring 67 to rotate the spindle 41 and move a stop lever 40 thereon into engagement with a pin 39 depending from the slide 36. The rotation of the cam box caused the pin 35 to follow the cam groove 32 and rock the lever 37 and spindle 42 so that the second lever 49 also keyed to the shaft rocks the third lever 52 projecting from the container 53 and vertical spindle 57 on which it is mounted; the wire guide 62 is thus rocked about the axis of the vertical spindle 57, the wire being consequently traversed along the length of the former while the pin 35 moves from one end of the cam groove 32 to the other. The levers 49, 52 are connected by a spring 51 and a plate 53<SP>1</SP>, with rounded ends, is disposed between the levers and is carried by a rod 54 passing through it and secured to a member 55 carried by a pivotally mounted spindle 58 in the machine frame. As the movement of the spout is taking place, the end of the arm 44 forces the spring plunger 47 down until, when the pin 35 reaches the mid-point of the cam groove 32, the end 45 passes over the end of the plunger to tension the lever 37 in an anti-clockwise direction so that, when the first layer of wire has been wound and the pin 35 reaches the end of the groove 32, the pin is sprung into the start of the cam groove 33 while the feeding angle of the spout is reversed so that it is in the correct position for the winding of the second layer of wire by the cam groove 33, the same cycle of movements taking place until the last layer is wound when a pin 78 in the last cam groove engages the pin 35 and moves the slide 36 so that the pin 39 moves the stop lever 40, the lever 68 being consequently rocked to project into the path of a projection on a collar 4 on the shaft 2, 3 with the result that the shaft 14 is rocked to disengage the spring 13 from the end of the sleeve 9 with disengagement of the clutch members, raising of the lever 15, lowering of the spindle 24 and cam box 28, disengagement of the cam 25 from the worm wheel 21, and return of the box and other parts to their initial starting positions by the engagement of the roller on the lever 73 in the cam 25; the collar 45 is loosely mounted on the shaft 2, 3 and is connected by a spring to a collar fixed thereto so that the shock of the engagement of the lever 68 with the projection is taken up by the spring. The number of cams in the box 28 may be varied so that a single layer or any number of layers may be wound on the former.