Engine construction

Claim 1

AN INTERNAL COMBUSTION ENGINE OF THE RECIPROCATING PISTON TYPE HAVING A CYLINDER WITH A PISTON SLIDABLY MOVABLE THEREIN FOR DEFINING A VARIABLE VOLUME CHAMBER BETWEEN ONE END OF SAID CYLINDER AND SAID PISTON, A SWIRL TYPE COMBUSTION CHAMBER OFFSET LATERALLY FROM THE AXIS OF SAID CYLINDER AND HAVING AIR-FUEL MIXTURE IGNITION MEANS THEREIN, LATERALLY EXTENDING PASSAGE MEANS CONNECTING SAID COMBUSTION AND CYLINDER CHAMBERS, FIRST INTAKE VALVE MEANS FOR CHARGING SAID CYLINDER WITH AIR HAVING A SWIRLING MOTION IN A DIRECTION TOWARDS ONE END OF SAID PASSAGE MEANS, SECONDARY INTAKE VALVE MEANS FOR INTRODUCING A MIXTURE OF FUEL AND AIR DIRECTLY INTO SAID COMBUSTION CHAMBER WITH A SWIRLING MOTION IN A DIRECTION AWAY FROM THE OPPOSITE END OF SAID PASSAGE MEANS TO CONTAIN SAID MIXTURE WITHIN SAID CHAMBER, THE VOLUME TO SAID COMBUSTION CHAMBER BEING GREATER THAN THE MINIMUM CLEARANCE VOLUME OF SAID CYLINDER WHEREBY THE EARLY STAGES OF COMPRESSION OF SAID AIR BY SAID PISTON TRANSFERS AIR FROM SAID CYLINDER THROUGH SAID PASSAGE INTO SAID COMBUSTION CHAMBER AT A RATE PROMOTING MIXING OF THE AIR WITH THE SWIRLING FUEL-AIR MIXTURE THEREIN, THE LATER STAGES OF COMPRESSION EFFECTING AN INCREASE IN THE RATE OF TRANSFER OF THE CYLINDER CHAMBER AIR INTO SAID COMBUSTION CHAMBER SUFFICIENT TO COMPRESS THE MIXTURE AND MOVE IT TO A POINT ADJACENT SAID IGNITION MEANS SUBSTANTIALLY WITHOUT MIXING OF SAID CHARGE WITH THE LATER STAGE COMPRESSION AIR MOVING IT, THE LATTER STAGE OF OPERATION PROVIDING AN IGNITIBLE MIXTURE CHARGE ADJACENT SAID IGNITION MEANS AT THE TIME OF IGNITION SPREADABLE SUBSEQUENT TO IGNITION THROUGH SAID CHAMBER AND SAID PASSAGE INTO SAID CYLINDER TO CONSUME ALL FUEL THEREIN.