Automatically variable choke carburetor

Claim 1

AN AUTOMATICALLY VARIABLE CHOKE CARBURETOR COMPRISING A BODY DEFINING A CHAMBER OF TREAR-DROP SHAPE WITH TOP OF SAID CHAMBER AND A THROTTLE VALVE IN THE CYLINDRICAL THROAT EXTENSION OF THE CHAMBER, A FLOAT CHAMBER CONNECTED TO THE LOWER PART OF SAID BODY, SAID BODY HAVING A VALVE CHAMBER, A FUEL INLET PORT CONNECTING SAID FLOAT CHAMBER TO SAID VALVE CHAMBER, A FUEL DELIVERY TUBE MOUNTED TRANSVERSELY ACROSS SAID CHAMBER AND HAVING AN OUTLET LOCATED MEDIALLY IN SAID CHAMBER, SAID OUTLET BEING IN THE TOP OF SAID TUBE FACING SAID AIR INLET, AND ATOMIZING AIR DUCT CONNECTED TO EACH END OF SAID FUEL DELIVERY TUBE AND EXTENDING THROUGH SAID BODY INTO INLET PORTS IN THE TOP THEREOF, A CYLINDER MOUNTED ON SAID BODY ABOVE SAID MAIN AIR INLET, A PISTON IN SAID CYLINDER INCLUDING A PISTON ROD WHICH PASSES THROUGH SAID MAIN AIR INLET, A CONOID MOUNTED ON THE BOTTOM END OF SAID PISTON ROD, A SPRING IN SAID CYLINDER ACTING ON SAID PISTON TO MOVE SAID CONOID TO A POSITION IN WHICH SAID MAIN AIR INLET IS CLOSED, A REVERSE TAPER VALVE IN SAID VALVE CHAMBER TO REGULATE THE FLOW OF FUEL TO SAID FUEL DELIVERY TUBE, SAID VALVE INCLUDING A STEM CONNECTED TO SAID PISTON, THE CYLINDER BEING OPEN AT THE BOTTOM AND CLOSED AT THE TOP, THE BODY INCLUDING A SPIDER FRAME ABOVE SAID CHAMBER, AN ANNULAR PLATE MOUNTED ON SAID SPIDER FRAME, SAID SPRING BEING BETWEEN THE PISTON IN THE CYLINDER AND THE ANNULAR PLATE TO URGE THE PISTON UPWARDLY, SAID CONOID BEING DISPLACED DOWNWARDLY UPON OPENING OF THE THROTTLE VALVE WHICH SUBJECTS THE CONOID TO SUCTION, AND A VALVE SEAT IN SAID VALVE CHAMBER AND AGAINST WHICH THE VALVE IS SEATED WITH SAID PISTON IN AN UPPERMOST POSITION IN WHICH THE MAIN AIR INLET IS CLOSED BY THE CONOID, SAID VALVE WHICH REGULATES THE FLOW OF FUEL BEING MOVED AWAY FROM ITS VALVE SEAT BY DOWNWARD MOVEMENT OF SAID PISTON.