Method and apparatus for manufacturing a preform for a flat coil dynamoelectric device

Abstract From the Canadian patent

A discoidal, flat coil armature for a flat disc motor is formed by winding coils of wire on mutually spaced inner and outer ring structures. The inner ring structure surrounds a commutator body having segments with tangs. Automatic apparatus, including a rotating flier, a preform clamp and rotator, and a wire guide assembly, winds the coils and makes coil terminal connections to the commutator tangs before during, and, after the winding of the coils. The coils are tightly wound on the ring structures so that they form along, with the ring structures and the commutator body an, armature preform having a self-supporting shape. The parts of the finished preform are bonded together and to an …