Gas-carburetting apparatus

Claim 1

IN GAS-CARBURETTING APPARATUS FOR SUPPLYING A GASAND-AIR MIXTURE TO AN ENGINE, THE COMBINATION INCLUDING: A GAS-CARBURETOR COMPRISING A VENTURI AN AIR-INLET END AND A MIXTURE-OUTLET END, A GAS-SUPPLY CHAMBER, A GAS-SUPPLY CONNECTION BETWEEN THE GAS-SUPPLY CHAMBER AND A SUCTION-POINT IN THE VENTURI, A GAS-INLET CHAMBER HAVING A GAS-INLET, A GAS-OUTLET FROM SAID GAS-INLET CHAMBER TO SAID GAS-SUPPLY CHAMBER, A GAS-METERING CARBURETORVALVE WHICH IS MOVABLE, FROM A POSITION CLOSING SAID INLETCHAMBER OUTLET, TO VARIOUS AMOUNTS OF VALVE-OPENINGS, FOR ADMITTING PROGRESSIVELY INCREASING RATES OF GAS-FLOW DEPENDING SENSITIVELY UPON THE AMOUNT OF OPENING-MOVEMENT OF THE CARBURETOR-VALVE CARBURETOR-VALVE TOWARD ITS FOR YIELDABLY BASING SAID CARBURETOR-VALVE CLOSING-MEANS CLOSED POSITION, MEANS FOR LIMITING THE MAXIMUM OPENINGMOVEMENT OF THE CARBURETOR-VALVE, A FLEXIBLY MOUNTED CARBURETOR-CONTROLLING PRESSURE-PLATE, SEPARATING THE INTERIOR OF THE GAS-SUPPLY CHAMBER FROM THE EXTERNAL ATMOSPHERE, A CARBURETOR-OPERATING MECHANICAL-CONNECTION MEANS, BETWEEN SAID CARBURETOR-CONTROLLING PRESSURE-PLATE AND THE CARBURETOR-VALVE, FOR CAUSING A GAS-METERING OPENING OF SAID CARBURETOR-VALVE IN RESPONSE TO A SUCTION WITHIN SAID GAS-SUPPLY CHAMBER, THE EFFECTIVE PRESSURE-AREA OF THE CARBURETOR-CONTROLLING PRESSURE- PLATE BEING SUFFICIENTLY LARGE SO THAT THE CARBURETOR-VALVE ON THE MIXTURE-OUTLET RESPONSE TO A REASONABLY SMALL SUCTION IN THE MIXTURE-OUTLET CHAMBER, AN ENGINE-THROTTLE VALVE ON THE MIXTURE-OUTLET END OF THE VENTURI, A CARBURETOR-PART FOR PROVIDING AN AUXILIARY SUCTION-CHAMBER, A SUCTION-CONNECTION BETWEEN THE ENGINE-SIDE OF SAID THROTTLE VALVE AND SAID AUXILIARY SUCTION-CHAMBER, A FLEXIABLY MOUNTED SUCTION-CHAMBER PRESSURE-PLATE SEPARATING THE INTERIOR OF THE AUXILIARY SUCTIONCHAMBER FROM THE EXTERNAL ATMOSPHERE, AN ILDING-ASSISTING MECHANICAL-CONNECTION MEANS, BETWEEN SAID SUCTIONCHAMBER PRESSURE-PLATE AND THE CARBURETOR-VALVE,FOR CAUSING A SMALL OPENING OF THE CARBURETOR-VALVE IN RESPONSE TO A SUCTION WITHIN SAID AUXILIARY SUCTION-CHAMBER AND IDLING-CONTROLLING MEANS FOR LIMITING THE VALVE-OPENING MOVEMENT OF SAID IDLING-ASSISTING MECHANICAL-CONNECTION MEANS.