Method for manufacturing an armature for a dynamo-electric machine having offsetting and overlapping coils

A method for manufacturing an armature for a dynamo-electric machine comprising:

• securing a core to a shaft, wherein said core has a plurality of slots extending in an axial direction formed on an outer circumferential surface of said core;
• winding a coil on said core comprising the steps of:
• simultaneously winding a first plurality of coil portions on said core to form a first simultaneously-wound coil portion group;
• simultaneously winding a second plurality of coil portions on said core to form a second simultaneously-wound coil portion group, wherein said second plurality of coil portions of said second simultaneously-wound coil portion group are wound to be offset in the circumferential direction of said core from said first plurality of coil portions of said first simultaneously-wound coil portion group;
• wherein said first and second pluralities of coil portions are formed by winding wires a plurality of turns around a pair of said slots separated by a predetermined number of said slots, wherein said first and second simultaneously-wound coil portion groups are consecutively-wound groups, and wherein at least one pair of adjacent ones of said coil portions within at least one of said simultaneously-wound coil portion groups share a common one of said slots;
• securing a commutator to said shaft, said commutator comprising a plurality of segments;
• and
• permanently electrically connecting pairs of said segments that should have the same electric potential with a plurality of equalizing connectors, so that each of said pairs of said coil portions that should have the same electric potential has a substantially equal electrical potential.