Induction motors and starting arrangements therefor

Claim 1

A SINGLE PHASE INDUCTION MOTOR HAVING A STATOR MEMBER, A MAIN WINDING AND A STARTING WINDING PHYSICALLY DISPLACED FROM SAID MAIN WINDING AND DISPOSED ON SAID STATOR MEMBER, A SQUIRREL CAGE ROTOR MEMBER SUPPORTED FOR ROTATION RELATIVE TO SAID STATOR MEMBER, INPUT MEANS INCLUDING AT LEAST A PAIR OF ELECTRICAL LEADS FOR CONNECTING THE MAIN WINDING IN CIRCUIT WITH AN ALTERNATING POWER SOURCE, PHASE CONTROL MEANS FOR CONTROLLING THE INTERVAL OF CURRENT CONDUCTION TO THE START WINDING IN EACH HALF CYCLE, SAID PHASE CONTROL MEANS INCLUDING A BILATERAL SWITCHING MEANS, CIRCUIT MEANS CONNECTING SAID BILATERAL SWITCHING MEANS IN SERIES CIRCUIT WITH SAID STARTING WINDING AND CONNECTING SAID BILATERAL SWITCHING MEANS AND STARTING WINDING IN PARALLEL CIRCUIT RELATION WITH THE MAIN WINDING, SAID PHASE CONTROL MEANS CONTROLLING THE INTERVAL OF CURRENT CONDUCTION TO SAID STARTING WINDING TO PROVIDE A PHASE CONTROLLED CURRENT DURING THE STARTING CONDITION TO CAUSE SAID MOTOR TO START, AND MEANS RESPONSIVE TO THE SPEED OF SAID MOTOR TO CAUSE SAID PHASE CONTROL MEANS TO REDUCE SAID INTERVAL OF CURRENT CONDUCTION TO THE STARTING WINDING DURING THE RUNNING CONDITION OF THE MOTOR.