METHOD OF MANUFACTURING A COMMUTATOR FOR A D.C. ELECTRIC MACHINE

摘要

Disclosed is a process for the production of a collector in the form of a collector ring for use with direct current electric machines. The process consists of heating the collector ring, comprising copper sheets and insulating mica plates, assembled in a conventional apparatus by means of an inductor coaxial with the ring, and of exposing the collector ring to a radial pressure by applying to the apparatus a pressure of a predetermined value by means of a press.