Carburetors comprising an auxiliary device to increase the fuel feed for cold starting conditions

Claim 1

AN INTERNAL COMBUSTION ENGINE CARBURETOR WHICH COMPRISES, IN COMBINATION, AN INDUCTION PIPE, A CHOKE VALVE IN SAID PIPE, FIRST MEANS RESPONSIVE TO THE ENGINE TEMPERATURE FOR CLOSING SAID CHOKE VALVE WHEN THE ENGINE IS COLD AND STOPPED AND OPENING IT WHEN THE ENGINE IS STARTED AND WARMING UP, A THROTTLE VALVE IN SAID PIPE DOWNSTREAM OF SAID CHOKE VALVE, ABUTMENT MEANS MOVABLE WITH RESPECT TO SAID PIPE OPERATIVELY CONNECTED WITH SAID THROTTLE VALVE FOR CONTROLLING THE IDLING RUNNING POSITION THEREOF, RETURN SPRING MEANS FOR URGING SAID THROTTLE VALVE TOWARD THE POSITION DETERMINED BY SAID ABUTMENT EMANS, SECOND MEANS RESPONSIVE TO VARIATIONS OF THE ENGINE TEMPERATURE BUT ENTIRELY INDEPENDENT OF SAID FIRST ENGINE-TEMPERATURE RESPONSIVE MEANS OPERATIVELY CONNECTED WITH SAID ABUTMENT MEANS FORMOVING THE ABUTMENT EMANS IN ONE DIRECTION FOR AUTOMATICALLY CONTROLLING THE POSITION THEREOF TO ADJUST THE DEGREE OF OPENING OF SAID THROTTLE VALVE IN SAID IDLING RUNNING POSITION THEREOF; SAID SECOND ENGINE-TEMPERATURE RESPONSIVE MEANS COMPRISING A CASING MOUNTED IN FIXED POSITION WITH RESPECT TO SAID PIPE, AND A MASS OF MATERIAL ENCLOSED IN SAID CASING CAPABLE OF UNDERGOING A GREAT VARIATION OF VOLUMNE WHEN PASSING FROM ONE PHYSICAL STATE TO ANOTHER, IN A REVERSIBLE MANNER, IN RESPONSE TO VARIATION OF ITS TEMPERATURE FROM ONE GIVEN VALUE TO ANOTHER ONE, RESPECTIVELY, AND INCLUDING MEANS FOR SUBJECTING SAID CASING TO ONE TEMPERATURE WHEN THE ENGINE IS COLD AND TO ANOTHER TEMPERATURE WHEN THE ENGINE IS WARM; AND MEANS OPERABLE ON THE ABUTMENT MEANS IN THE OTHER DIRECTION FOR MOVING SAID ABUTMENT MEANS WITH RESPECT TO SAID CASING IN RESPONSE TO REVERSE VARIATIONS OF THE VOLUME OF SAID MASS OF MATERIAL, SAID LAST ABUTMENT MOVING MEANS BEING CAPABLE, UPON SUCH REVERSE VARIATIIONS OF VOLUME OF SAID MASS OF MATERIAL, OF MOVING SAID ABUTMENT MEANS AGAINST THE ACTION OF SAID SPRING MEANS.