Carburetor for internal combustion engines

Claim 1

IN A CARBURETOR FOR INTERNAL COMBUSTION ENGINES, A CARBURETOR HOUSING HAVING AN UPPER BORE AND A LOWER COMPARTMENT AREA; SAID LOWER COMPARTMENT ARE ADAPTED TO BE IN COMMUNICATION WITH THE INTAKE MANIFOLD OF AN INTERNAL COMBUSTION EGINE, THROTTLE VALVE MEANS SLIDABLY MOUNTED IN THE BORE OF SAID HOUSING AND ADAPTED TO VARIABLY RESTRICT THE ENTRANCE TO SAID LOWER COMPARTMENT, AN AIR INLET PORT IN SAID HOUSING COMMUNICATING WITH THE BORE OF SAID HOUSING ABOVE THE ENTRANCE TO SAID LOWER COMPARTMENT AREA, A PASSAGEWAY EXTENDING THROUGH SAID THROTTLE VALVE MEANS ADAPTED TO HAVE ONE END IN COMMUNICATION WITH A SOURCE OF COMBUSTIBLE FLUID, MEANS MOUNTING A NEEDLE VALVE STEM EXTENDING INTO THE PASSAGEWAY OF SAID THROTTLE VALVE MEANS, AT LEAST ONE FLUID EXIT PASSAGEWAY IN SAID THROTTLE VALVE MEANS HAVING ONE END OPERATIVELY CONNECTED TO THE OTHER END OF SAID PASSAGEWAY OF SAID THROTTLE VALVE MEANS AND ITS OTHER END COMMUNICATING WITH THE INSIDE OF LOWER COMPARTMENT AREA OF SAID CARBURETOR HOUSING, A CONDUIT HAVING ONE END COMMUNICATING WITH THE LOWER COMPARTMENT AREA OF SAID CARBURETOR HOUSING AND ITS OTHER END COMMUNICATING WITH THE INSIDE OF THE BORE OF SAID CARBURETOR HOUSING AT A POSITION ABOVE THE SAID THROTTLE VALVE MEANS, AND A MANUALLY CONTROLLABLE VALVE MEANS IMPOSED IN SAID CONDUIT.