Accelerator pump having thermostatic element

Claim 1

IN A CARBURETOR, A MIXTURE CONDUIT FOR SUPPLYING A MIXTURE OF FUEL AND AIR TO AN ENGINE, A THROTTLE VALVE IN SAID CONDUIT, A FUEL BOWL, A FUEL SYSTEM FOR SUPPLYING FUEL FROM SAID BOWL TO SAID MIXTURE CONDUIT, AN ACCELERATING PUMP CHAMBER, A RECIPROCABLE MOVABLE WALL IN SAID CYLINDER MOVABLE IN ONE DIRECTION TO DISCHARGE FUEL FROM SAID CYLINDER INTO SAID MIXTURE CONDUIT, AND MOVABLE IN THE OTHER DIRECTION TO DRAW FUEL FROM SAID FUEL BOWL INTO SAID CYLINDER, A MECHANICAL LINKAGE INTERCONNECTING SAID THROTTLE VALVE AND SAID MOVABLE WALL, SAID MECHANICAL LINKAGE BEING ADAPTED TO ALLOW THE MOVABLE WALL TO DISCHARGE FUEL THROUGH A JET INTO SAID CONDUIT WHEN MOVED IN ONE DIRECTION, AND TO DRAW FUEL INTO SAID PUMP CHAMBER WHEN MOVED IN THE OPPOSITE DIRECTION, A FUEL BYPASS PASSAGEWAY INCORPORATED IN SAID MOVABLE WALL, AND A THERMOSTATIC VALVE MEANS IMMERSED IN SAID FUEL FOR CLOSING SAID PASSAGEWAY WHEN SAID MOVABLE WALL IS COLD AND FOR OPENING SAID BYPASS PASSAGEWAY WHEN SAID MOVABLE WALL IS WARM.