Electric control devices

Claim 1

A REMOTE CONTROL DEVICE COMPRISING A SATURABLE REACTOR SYSTEM HAVING A SUPPLY SIDE AND A LOAD SIDE BETWEEN WHICH EXTENDS, A MAIN CIRCUIT FOR CONNECTION IN SERIES WITH A LOAD CIRCUIT FOR ESTABLISHING AND DISESTABLISHING A SUPPLY OF A.C. POWER TO THE LOAD CIRCUIT BY VARYING THE IMPEDANCE OF THE MAIN CIRCUIT UNDER THE CONTROL OF SUPPLEMENTARY EXCITATION APPLIED TO EXCITATION WINDINGS PROVIDED ON THE REACTOR SYSTEM, SAID SUPPLEMENTARY EXCITATION BEING DERIVED FROM TWO EXCITATION SOURCES, ONE SOURCE DERIVING SUPPLY FROM A RECTIFIER SYSTEM AND TRANSFORMER MEANS CONNECTED TO THE SUPPLY SIDE OF THE REACTOR SYSTEM AND THE OTHER SOURCE DERIVING SUPPLY FROM A RECTIFIER SYSTEM AND TRANSFORMER MEANS CONNECTED TO THE LOAD SIDE OF THE REACTOR SYSTEM, AN INTERLOCKING CIRCUIT INCLUDING THE SINGLE POLE CONTACTS OVER A "START" PUSH-BUTTON SWITCH CONNECTED TO THE SAID TWO EXCITATION SOURCES SO THAT SAID SUPPLY SIDE SOURCE IS OPERATIVE IN THE EXCITAION WINDINGS ONLY WHEN THE SAID "START" PUSH-BUTTON SWITCH CONTACTS ARE CLOSED, SAID LOAD SIDE SOURCE PROVIDING A RETAINING SOURCE OF EXCITATION WHEN SAID "START" CONTACTS ARE BROKEN.