MCGRAW-EDISON COMPANY

EM

ELECTRICAL MACHINES AND APPARATUS-NAMELY, SYNCHRONOUS GENERATORS, SYCHRONOUS MOTORS, [ DIRECT-CURRENT GENERATORS, ] INDUCTION MOTORS, VERTICAL HOLLOW-SHAFT SYNCHRONOUS MOTORS, [ DIRECT-CURRENT MOTORS, ] DUAL-VOLTAGE SYNCHRONOUS GENERATORS, SYNCHRONOUS CONDENSERS, [ AUTOMATIC SYNCHRONIZERS ] VOLTAGE REGULATORS, [ FREQUENCY-RESPONSIVE SYNCHRONOUS-MOTOR CONTROLS, POLARIZED FIELD-FREQUENCY SYNCHRONOUS-MOTOR CONTROLS, PART-WINDING MOTOR STARTING CONTROLS, AUTOMATIC CONTROLS FOR INDUCTION MOTORS, SWITCH MAGNETS, OVERLOAD RELAYS, AUTOTRANSFORMERS, CURRENT TRANSFORMERS, UNDERVOLTAGE RELEASE RELAYS, FIELD DISCHARGE RESISTORS, DISCONNECTING SWITCHES, CONTROL TRANSFORMERS, REACTORS,RHEOSTATS, ] AND MAGNETIC DRIVES;