Auto smog control for spark and carburetor

Claim 1

IN COMBINATION WITH A VEHICLE ENGINE HAVING A CARBURETOR, AN IGNITION SYSTEM, A BREAKER PLATE IN SAID IGNITION SYSTEM, AND A THROTTLE VALVE IN SAID CARBURETOR, AN ADVANCE AND RETARD CONTROL SYSTEM FOR SAID IGNITION SYSTEM COMPRISING: AN ENGINE VACUUM OPERATED ADVANCE AND RETARD MEANS, A LOST-MOTION CONNECTION BETWEEN SAID ENGINE VACUUM OPERATED MEANS AND SAID BREAKER PLATE, A FOOT OPERATED THROTTLE VALVE LINKAGE INCLUDING A FOOTPEDAL, YIELDABLE MEANS URGING SAID PEDAL TO RELEASED POSITION, A LOST-MOTION CONNECTION BETWEEN SAID LINGAGE AND AND SAID BREAKER PLATE, YIELDABLE MEANS CONNECTED TO SAID BREAKER PLATE TO URGE SAID PLATE IN AN IGNITION ADVANCE DIRECTION, SAID BREAKER PLATE BEING HELD IN A RETARDED POSITION AT FULLY RELEASED POSITION OF SAID PEDAL BY SAID LINKAGE YIELDABLE MEANS AGAINST SAID BREAKER PLATE YIELDABLE MEANS, SAID LOST-MOTION CONNECTIONS PROVIDING A RANGE OF LINKAGE CONTROLLED MOVEMENT OF SAID BREAKER PLATE IN AN ADVANCE DIRECTION BY SAID BREAKER PLATE YIELDABLE MEANS AS SAID PEDAL IS MOVED FROM CLOSED POSITION TO THROTTLE VALVE IDLE POSITION, AND PERMITTING BREAKER PLATE CONTROL BEYOND SAID RANGE BY SAID ENGINE VACUUM OPERATED MEANS INDEPENDENTLY OF SAID LINKAGE WHEN SAID THROTTLE VALVE IS OPERATED BEYOND IDLE POSITION.