Supplemental fuel feed system for internal combustion engines

Claim 1

IN A TWO CYCLE INTERNAL COMBUSTION ENGINE HAVING A FUEL SUPPLY, A CYLINDER, A PISTON SLIDABLY MOUNTED THEREIN AND A CRANKCASE THE COMBINATION COMPRISING A FUEL FEED SYSTEM INCLUDING A CARBURETOR, A THROTTLE VALVE IN SAID CARBURETOR, AN INLET PIPE LEADING FRON SAID CARBURETOR TO SAID CRANKCASE, A BYPASS DUCT LEADING FROM SAID CRANKCASE TO SAID CYLINDER, SAID CYLINDER HAVING AN INLET PORT IN THE SIDE WALL THEREOF COMMUNICATING WITH SAID BYPASS DUCT, A FUEL PUMP CHAMBER COMMUNICATION WITH SAID FUEL SUPPLY, A FUEL DUCT OMMUNICATION WOTH SAID CHAMBER, A PLUNGER COMMUNICATION WITH SAID CHAMBER, SAID PLUNGER BEING OPERATIVELY CONNECTED TO THROTTLE VALVE TO EXPEL FUEL DIRECT A STREAM OPF FUEL INTO SAID BYPASS DUCT AND THROUGH IS OPENED, A CHECK VALVE BETWEEN SAID FUEL SUPPLY AND SAID CHAMBER, A SUPPLEMENTAL FUEL NOZZLE RIGIDLY MOUNTED IN THE WALL OF SAID BYPASS DUCT ON AN AXIS EXTENDING THROUGH SAID INLET PORT, SAID NOZZLE BEING POSITINED TO DIRECT A STREAM OF FUEL INTO SAID BYPASS DUCT AND THROUGH SAID INLET PORT, SAID STREAM THEREBY PASSING DIRECTLY INTO SAID CYLINDER WHEN SAIS POSTON MOVES OUT OF SEALING ENGAGEMENT WITH SAID INLET PORT, SAID NOZZLE COMMUNICATING WITH SAID FUEL DUCT, A PRESSURE RESPONSIVE VALVE MEANS BETWEEN THE NOZZLE AND THE CHAMBER TO PERMIT THE FLOW OF FUEL FROM SAID CHAMBER THROUGH SAID PRESSURE RESPONSIVE VALVE ONLY WHEN THE PRESSURE WITHIN SAID CHAMBER HAS EXCEEDED A PREDETERMINED VALUE, SAID FUEL BEING THEREBY FED CONTINUOUSLY FROM SAID CARBURETOR THROUGH SAID INLET DUCT INTO SAID CRANKCASE AND BYPASS DICT AND DIRECT IN A STREAM FROM SAID NOZZLE INTO SAID CYLINDER ONLY WHEN THE THROTTLE VALVE IS OPENED.