New insulation system for D-C field coils

Full scale production conversion to a new Class B field coil insulation system for industrial d-c motors and generators was completed at General Electric Company in Erie, Pennsylvania, during the summer of 1960. This system provides a heavy epoxy coil coating applied by a closely monitored and controlled dipping process. The encapsulated coil is then molded to the pole piece to provide a rigidly tight assembly.