Motor commutator utilizing controlled rectifiers

Claim 1

IN A SYSTEM FOR ENERGIZING IN SUCCESSION THE FIELD COILS OF A DYNAMO ELECTRIC MACHINE TO PRODUCE A ROTATING MAGNETIC FIELD THEREIN, THE COMBINATION OF A CONTROLLED RECTIFIER IN SERIES WITH EACH OF SAID FIELD COILS, EACH OF SAID RECTIFIERS HAVING A GATE ELECTRODE TO RENDER IT CONDUCTIVE TO PASS CURRENT THROUGH THE RESPECTIVE FIELD COIL IN RESPONSE TO POSITIVE POTENTIAL APPLIED TO SAID GATE ELECTRODE, A SATURABLE REACTOR CONNECTED ACROSS EACH CONTROLLED RECTIFIER THROUGH A CONDENSER WHEREBY WHEN SAID RECTIFIER IS NONCONDUCTIVE SAID CONDENSER CHARGES THROUGH THE CORRESPONDING REACTOR AND FIELD COIL, MEANS TO APPLY POSITIVE PULSES TO SAID GATE ELECTRODES IN SUCCESSION THEREBY TO RENDER SAID RECTIFIERS CONDUCTIVE THEREBY CAUSING DISCHARGE OF SAID CONDENSERS THROUGH SAID REACTORS AND PRODUCING A REMANENCE FLUX THEREIN, AND MEANS TO REVERSE THE FLUX IN SAID REACTORS THEREBY TO PRODUCE A CHARGE IN SAID CONDENSERS TO RENDER SAID RECTIFIERS NON CONDUCTIVE WHEREBY SAID FIELD COILS ARE SUPPLIED BY ENERGIZING PULSES IN SUCCESSION.