Carburetor

Claim 1

A CARBURETOR COMPRISING A FIRST INTEGRAL STRUCTURE FORMING A FUEL BOWL AND A MIXTURE CONDUIT WITH A VERTICAL AXIS, A SEPARATE SECOND INTEGRAL STRUCTURE FITTED TO THE TOP OF SAID FIRST INTEGRAL STRUCTURE, SAID SECOND STRUCTURE HAVING A FIRST PORTION FORMING A COVER OVER SAID FUEL BOWL AND A VENTURI SECTION COEXTENSIVE WITH SAID MIXTURE CONDUIT, A THIRD SEPARATE STRUCTURE FITTED TO THE TOP OF SAID SECOND STRUCTURE AND FORMING AN INLET AIR PASSAGE TO SAID CARBURETOR AND COEXTENSIVE WITH SAID MIXTURE CONDUIT AND VENTURI SECTION, A FIRST THERMALLY INSULATING GASKET BETWEEN SAID FIRST AND SECOND INTEGRAL STRUCTURE AND A SECOND THERMALLY INSULATING GASKET BETWEEN SAID SECOND AND THIRD SECTION TO THERMALLY INSULATE SAID SECTIONS ONE FROM THE OTHER, A FOURTH INTEGRAL STRUCTURE FITTED TO THE BOTTOM OF SAID FIRST SECTION AND INCLUDING A BORE FORMING AN EXTENSION OF SAID MIXTURE CONDUIT, A THROTTLE SHAFT EXTENDING THROUGH SAID BORE AND A THROTTLE VALVE WITHIN SAID BORE AND FIXED TO SAID THROTTLE SHAFT TO CONTROL FLOW OF AIR AND FUEL THERETHROUGH, SAID SECOND STRUCTURE HAVING A SECOND INTEGRAL PORTION THEREOF DEPENDING INTO SAID FUEL BOWL FROM SAID FIRST COVER PORTION AND HAVING A PLURALITY OF TERMINAL END PORTIONS POSITIONED ADJACENT TO THE BOTTOM OF SAID FUEL BOWL AND A FIRST FUEL PASSAGE INCLUDING A FUEL WELL EXTENDING FROM ONE OF SAID TERMINAL END PORTIONS THROUGH SAID SECOND STRUCTURE TO SAID VENTURI SECTION, AN APERTURED FUEL JET MOUNTED IN SAID FIRST FUEL PASSAGE, A FUEL NOZZLE IN SAID FIRST FUEL PASSAGE OPENING INTO SAID VENTURI SECTION, SAID SECOND STRUCTURE HAVING A SECOND FUEL PASSAGE EXTENDING FROM ANOTHER ONE OF SAID PLURALITY OF TERMINAL END PORTIONS TO SAID VENTURI SECTION, AN ACCELERATING FUEL PUMP PISTON WITHIN SAID SECOND FUEL PASSAGE, A SPRING BETWEEN THE BOTTOM OF SAID FUEL BOWL AND SAID PISTON FOR BIASING SAID PISTON UPWARDLY IN A PUMPING DIRECTION, AN OPERATING LINKAGE CONNECTED BETWEEN SAID THROTTLE AND SAID PISTON AND SUPPORTED BY SAID SECOND STRUCTURE TO MOVE SAID PISTON DOWNWARDLY AGAINST SAID SPRING BIAS.