Carburetor

Claim 1

A CARBURETOR COMPRISING A BODY HAVING A MIXTURE CONDUIT EXTENDING THERETHROUGH AND A FUEL CHAMBER AT ONE SIDE OF SAID BODY, A DIAPHRAGM CLOSING SAID FUEL CHAMBER, MEANS FOR DELIVERING FUEL TO SAID CHAMBER CONTROLLED BY SAID DIAPHRAGM, SAID MIXTURE CONDUIT BEING FORMED TO PROVIDE A VENTURI, A ROTATABLE THROTTLE SHAFT EXTENDING ACROSS SAID MIXTURE CONDUIT DOWNSTREAM FROM SAID VENTURI, A THROTTLE ON SAID SHAFT, A HIGH SPEED FUEL SYSTEM COMPRISING A FIRST FUEL WELL IN SAID BODY LOCATED BETWEEN SAID FUEL CHAMBER AND MIXTURE CONDUIT, A HIGH SPEED FUEL PASSAGE CONNECTING SAID WELL AND SAID MIXTURE CONDUIT AND A HIGH SPEED NOZZLE IN SAID HIGH SPEED FUEL PASSAGE AT THE THROAT OF THE VENTURI, A CONDUIT, CONNECTING SAID FUEL CHAMBER AND FIRST FUEL WELL, MEANS FOR METERING THE FLOW OF FUEL THROUGH SAID CONDUIT TO THE FUEL WELL, AN ACCELERATION SYSTEM COMPRISING SEPARATE PASSAGING FROM SAID WELL TO SAID MIXTURE CONDUIT INCLUDING A SECOND WELL AND AN ACCELERATING NOZZLE HAVING ONE END OPENING INTO THE MIXTURE CONDUIT AT A POINT AT WHICH SAID END OF THE ACCELERATING NOZZLE IS TRAVERSED BY THE PERIPHERY OF THE THROTTLE WHEN THE THROTTLE IS MOVED FROM A CLOSED TO AN OPEN POSITION AND BETWEEN SAID HIGH SPEED NOZZLE AND SAID THROTTLE SHAFT, AN AIR BLEED PASSAGE INTO SAID FIRST WELL AND INTO SAID ACCELERATING SYSTEM FROM THE MIXTURE CONDUIT UPSTREAM OF SAID HIGH SPEED NOZZLE, WHEREBY AIR IS BLED INTO SAID FIRST WELL AND SAID ACCELERATING SYSTEM WHEN SAID THROTTLE IS MOVED TO A POSITION TO PLACE THE ACCELERATING NOZZLE DOWNSTREAM OF THE THROTTLE, AND NA INDEPENDENT IDLE FUEL MEANS INCLUDING AN IDLE PORT DOWNSTREAM FROM THE HIGH SPEED FUEL NOZZLE AND A SEPARATE IDLE FUEL PASSAGE BETWEEN SAID IDLE PORT AND SAID FUEL CHAMBER FOR DELIVERY OF FUEL FROMTHE FUEL CHAMBER TO THE MIXTURE CONDUIT WHEN THE THROTTLE IS AT A CLOSED IDLE POSITION, AND MEANS FOR METERING FLOW OF FUEL THROUGH SAID IDLE FUEL PASSAGE.