Direct current dynamoelectric machine commutating pole assembly

Claim 1

In a direct current dynamoelectric machine having an armature assembly including a commutator through which electrical power is supplied to the armature windings mounted for rotation within the space defined by the interior surface of a frame member and a plurality of salient field pole assemblies extending radially inwardly from the interior surface of the frame member and terminating adjacent the armature, a plurality of commutating pole assemblies for improving armature commutation, each of said commutating pole assemblies comprising: a commutating pole piece supported by said frame member made up of a plurality of laminations of a magnetic material having a first elongated portion located in the space between adjacent said field pole assemblies and extending in a direction axial to said armature and an integral second portion extending substantially normal to said elongated first portion, and an electrical commutating winding positioned upon said integral second portion of said commutating pole piece.