Fuel injection pump

Claim 1

A FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES, COMPRISING A FIRST AND A SECOND CYLINDER EACH HAVING A FUEL-ADMITTING INLET AND AN OUTLET, THE OUTLET OF SAID FIRST CYLINDER BEING ARRANGED TO DISCHARGE FUEL INTO THE ENGINE; FIRST AND SECOND PISTONS RECIPROCABLY RECEIVED IN THE RESPECTIVE CYLINDERS; MEANS FOR RECIPROCATING WORKING PISTONS SO THAT SAID PISTONS PERFORM ALTERNATING WORKING AND RETURN STROKES; A HOUSING DEFINING A CHAMBER COMMUNICATING WITH THE OUTLET OF SAID CYLINDER; A VALVE MEMBER RECIPROCABLE IN SAID CHAMBER TO AND FROM AN OPERATIVE POSITION; RELIEF CONDUIT MEANS CONNECTED WITH SAID FIRST CYLINDER AND CONTROLLED BY SAID VALVE MEMBER TO PERMIT OUTFLOW OF FUEL FROM SAID FIRST CYLINDER AND TO THEREBY TERMINATING THE OUTFLOW OF FUEL THROUGH THE OUTLET OF SAID FIRST CYLINDER WHEN SAID PISTONS PERFORM A WORKING STROKE AND THE SECOND PISTON EXPELS FUEL INTO SAID CHAMBER TO MOVE THE VALVE MEMBER TO SAID OPERATIVE POSITION; A RETURN CONDUIT CONNECTING SAID CHAMBER WITH SAID SECOND CYLINDER; FIRST ADJUSTABLE THROTTLE VALVE MEANS IN SAID RETURN CONDUIT; A STORAGE COMPARTMENT COMMUNICATING WITH THE OUTLET OF SAID SECOND CYLINDER UPSTREAM OF SAID CHAMBER; SECOND ADJUSTABLE THROTTLE VALVE MEANS FOR REGULATING THE FLOW OF FUEL BETWEEN THE OUTLET OF SAID SECOND CYLINDER AND SAID COMPARTMENT; AND MEANS FOR EXPELLING FUEL FROM SAID COMPARTMENT WHEN SAID SECOND THROTTLE VALVE MEANS IN OPEN AND WHILE SAID PISTONS PERFORM A RETURN STROKE.