Patent GB-190316564-A (GB)
Title: Improvements in or relating to Winding Machines.
Inventor: BOULT ALFRED JULIUS
Filed: 1903-07-28
Granted: 1904-02-04
Abstract: 16,564. Boult, A. J., [International Winding Co.]. July 28. Wire.-In apparatus for winding wire for the production of magnet coils or bobbins, the winding- mechanism and the delivery of the wire from rotating supplies, such as spools, bobbins, and the like, are so controlled that the insulated wire may be wound with uniform tension, and the coils laid on with great precision, so that packages of the same length and number of coils may be of the same diameter. The supplybobbin spindle e rotates in suitable bearings, and is provided with fast and adjustable conical washers which engage the spool and centre it upon the spindle. Mounted on the fixed washer is a brake wheel f on which bears a brake shoe g carried by a pivoted arm h. To the lower end of the arm h is attached one end of a spring o, the other end being adjustably fixed to a lever pivoted on the bracket d. One end of a pivoted bell-crank lever r carries a pin s which engages a slot in the lever j, while the other end is connected by the rod 8 to one arm u of a pivoted bell-crank lever. The other arm v is formed by a grooved conical sector adapted to receive a cord x, secured at y on the sector, and connected to a long spiral spring z. This spring z is connected at its lower end to a cord 2, passed around a grooved pulley 3 and attached to a weight 6. The effect of the spring z may be varied by adjusting the cord x in the grooves of the sector v, or by locking the pulley 3 in different positions by means of a nut 4. After leaving the supply spool, the wire is led around a grooved pulley 7 mounted on the lever u, through a guide 13, to a reciprocating guide b actuated by known means, and is wound upon a tube on the rotating winding-spindle a. Normally, the spindle a is driven from the loose friction pulley 15, Fig. 4, which is engaged by a sliding clutch 16. This clutch is pressed into contact with the pulley by a saucer-shaped spring 17 when released by the operator. The clutch 16 is held from rotation by pins 23 projecting from a fast collar 24. A bevel pinion 19 on the shaft 20 is kept always in gear with a bevel-wheel 18 on the clutch 16. A hub 29 is pinned to the shaft 20, and serves as a bearing for a flywheel 30 whicb is free to rotate ahead of the shaft, and to be driven thereby by free-wheel clutches formed by a series of rolls 31 mounted in pockets having inclined faces, so that, on the turning of the hub 29, the rolls are forced outward to engage with the inner surface of the wheel hub. The first coils are wound by hand by means of a crank 32, the hub of which carries pins to engage holes in the hub 29. The clutch 16 is then freed to engage with the pulley 15, and the normal speed is gradually attained. When the winding is started, the pull on the wire depresses the wheel 7, and the spring o is adjusted to the required tension. An excess of tension of the wire 7 will depress the wheel 7, and act through the link 8 and lever r to move the arm j, and alter the direction of pull of the spring o on the brake arm h and thus to relieve the pressure of the brake g on the controlling-wheel f. Relief in tension is counteracted by the spring z, and, when, at breakage or at the finish of the winding, the sector v is drawn down by the spring z, a buffer spring 14 relieves the shock. When the arm u is depressed by excessive tension beyond the control of the supply mechanism, or by a kink or knot catching in the guide 13, through the rod 8, lever r, and a rod 9, a dog 10 mounted on a detent lever 11 is depressed till its extremity comes into engagement with a disc 12 on the winding-spindle, so that the detent is pressed back to relelse the starting-lever and allow the stopping-mechanism to act.