Exterior control of the power valve of a carburetor

Claim 1

A CARBURETOR COMPRISING A FLOAT BOWL, A THROTTLE VALVE, AN INDUCTION PASSAGE FOR AIR AND FUEL, A MAIN FUEL PASSAGE FOR CONDUCTING FUEL FROM SAID BOWL TO SAID INDUCTION PASSAGE, AN AUXILIARY FUEL PASSAGE FOR CONDUCTING FUEL FROM SAID BOWL INTO SAID MAIN PASSAGE, A VALVE IN SAID BOWL FOR CONTROLLING THE FLOW OF FUEL THROUGH SAID AUXILIARY PASSAGE, AND MEANS FOR REGULATING THE POSITION OF SAID VALVE, SAID REGULATING MEANS COMPRISING MEANS BIASING THE VALVE TO CLOSED POSITION, MEANS ACTING AGAINST THE SAID BIASING MEANS FOR BIASING THE VALVE TO A MAXIMUM OPEN POSITION, AND VACUUM RESPONSIVE MEANS FOR ADJUSTING THE BIAS OF SAID SECOND MENTIONED BIASING MEANS WHEREBY TO ADJUST THE OPENING OF THE VALVE IN PROPORTION TO THE DEGREE OF VACUUM; SAID VALVE COMPRISING AN ORIFICE, A TAPERED PIN, AND MEANS MOUNTING SAID PIN FOR RECIPROCATING MOVEMENT IN THE ORIFICE; SAID SECOND MENTIONED BIASING MEANS COMPRISING A CONTACT FOR ABUTTING ENGAGEMENT WITH SAID TAPERED PIN AND A SPRING FOR URGING SAID CONTACT TOWARD SAID ABUTTING ENGAGEMENT, AND MEANS FOR SELECTIVELY ADJUSTING SAID MAXIMUM OPEN POSITION, SAID ADJUSTING MEANS COMPRISING AN ABUTMENT IN ENGAGEMENT WITH THE SPRING OF SAID SECOND MENTIONED BIASING MEANS AND MEANS ON THE BOWL FOR ADJUSTING THE POSITION OF THE ABUTMENT RELATIVE TO THE CLOSED POSITION INDEPENDENTLY OF THE CONTACT.