Charge forming and fuel feeding apparatus for internal combustion engines

Claim 1

CHARGE FORMING APPARATUS FOR AN INTERNAL COMBUSTION ENGINE INCLUDING, IN COMBINATION, A BODY FORMED WITH AN AIR AND FUEL MIXING PASSAGE, SAID BODY HAVING A FUEL CHAMBER, A FUEL INLET FOR THE CHAMBER, A VALVE FOR THE FUEL INLET, A FIRST FUEL CHANNEL MEANS IN THE BODY FOR DELIVERING FUEL FROM THE FUEL CHAMBER INTO THE MIXING PASSAGE INCLUDING A FIRST ORIFICE OPENING INTO SAID FUEL CHAMBER, METERING MEANS IN SAID FIRST FUEL CHANNEL MEANS, A FIRST MEMBER RESPONSIVE TO ASPIRATION IN THE MIXING PASSAGE INCLUDING A DIAPHRAGM, MEANS DISPOSED BETWEEN THE FIRST MEMBER AND THE INLET VALVE WHEREBY MOVEMENT OF THE FIRST MEMBER CONTROLS THE INLET VALVE, A SECOND FUEL CHANNEL MEANS CONNECTED TO SAID MIXING PASSAGE INCLUDING A SECOND ORIFICE OPENING INTO SAID FUEL CHAMBER SAID FIRST AND SECOND ORIFICES BEING SPACED FROM EACH OTHER AND FROM SAID FIRST MEMBER AND SAID MEANS DISPOSED BETWEEN SAID FIRST MEMBER AND SAID INLET VALVE AND AT A DISTANCE FROM THE CENTRAL AXIS OF SAID DIAPHRAGM, A VALVE MEANS IN THE SECOND FUEL CHANNEL MEANS THE UNASSOCIATED WITH SAID FIRST MEMBER AND SAID MEANS DISPOSED BETWEEN SAID FIRST MEMBER AND SAID INLET VALVE, A RESILIENT MEMBER DIRECTLY ENGAGING AND NORMALLY BIASING THE VALVE MEANS TO CLOSED POSITION DURING OPERATION OF THE ENGINE AT NORMAL SPEEDS, SAID VALVE MEMBER BEING RESPONSIVE ONLY TO EXCESSIVE ASPIRATION IN THE MIXING PASSAGE WHEN THE ENGINE EXCEEDS ITS NORMAL SPEED RANGE TO DELIVER ADDITIONAL FUEL INTO THE MIXING PASSAGE TO PROVIDE AN OVERRICH SLOW BURNING MIXTURE FOR THE ENGINE, SAID VALVE MEANS NORMALLY OBSTRUCTING SAID SECOND FUEL CHANNEL MEANS WHEN THE ENGINE IS OPERATING IN ITS NORMAL SPEED RANGE THROUGH THE REDUCTION IN THE DIFFERENTIAL PRESSURE ACCOMPANYING THE REDUCTION IN ENGINE SPEED.