Generator automatic idle control circuit

Claim 1

IN AN ELECTRIC CIRCUIT HAVING A DRIVEN SOURCE OF ELECTRIC CURRENT, A LOAD CIRCUIT CONNECTED TO RECEIVE CURRENT FROM SAID SOURCE, MEANS INCLUDING SPEED CONTROL MEANS TO CAUSE THE CURRENT SOURCE TO BE DRIVEN AT A PREDETERMINED OPERATING SPEED IN RESPONSE TO A MINIMUM VALUE OF CURRENT FLOW IN SAID LOAD CIRCUIT, SAID SPEED CONTROL MEANS INCLUDING MEANS TO CAUSE THE DRIVEN CURRENT SOURCE TO BE DRIVEN AT A PREDETERMINED IDLING SPEED SUBSTANTIALLY LOWER THAN SAID OPERATING SPEED IN THE ABSENCE OF SAID MINIMUM CURRENT FLOW IN SAID LOAD CIRCUIT, MEANS ELECTRICALLY CONNECTED TO SAID SOURCE AND SAID LOAD CIRCUIT TO MAINTAIN A SUBSTANTIALLY CONSTANT TERMINAL VOLTAGE AT SAID SOURCE UNDER VARIABLE LOAD CONDITIONS COMPRISING, FIRST RECTIFIER MEANS ELECTRICALLY CONNECTED TO SAID LOAD CIRCUIT CAPABLE OF PASSING LARGE LOAD CURRENTS WITHOUT SUBSTANTIAL INCREASE IN VOLTAGE ACROSS THEREOF HAVING A.C. TERMINALS AND A PRESELECTED THRESHOLD VOLTAGE, THE IMPROVEMENT WHICH COMPRISES A CONTROL CIRCUIT FOR ACTUATING SAID SPEED CONTROL MEANS COMPRISING A SENSITIVE CURRENTRESPONSIVE MEANS ENERGIZABLE BY A MINIMUM CURRENT FLOW