Double acting two stroke cycle internal combustion engine

Claim 1

IN A DOUBLE ACTING TWO STROKE CYCLE INTERNAL COMBUSTION ENGINE, THE COMBINATION OF A CRANKCASE, A CRANKSHAFT ROTATABLY MOUNTED IN SAID CRANKCASE, A WORKING CYLINDER FASTENED TO SAID CRANKCASE, A FRONT CYLINDER HEAD AND A BACK CYLINDER HEAD FASTENED TO SAID WORKING CYLINDER, EACH CYLINDER HEAD HAVING A REDUCED DIAMETER BORE THEREIN, A DOUBLE ACTING WORKING PISTON RECIPROCABLE IN SAID WORKING CYLINDER, A REDUCED DIAMETER FRONT VALVE PISTON AND A REDUCED DIAMETER BACK VALVE PISTON, SAID TWO VALVE PISTONS BEING ATTACHED TO SAID WORKING PISTON SO AS TO FORM A RECIPROCATING PISTON ASSEMBLY, EACH VALVE PISTON BEING RECIPROCABLE IN THE BORE OF ITS RESPECTIVE CYLINDER HEAD, SAID WORKING CYLINDER HAVING EXHAUST PORTS LOCATED IN ITS WALL, SAID WORKING PISTON BEING ADAPTED TO UNCOVER SAID EXHAUST PORTS NEAR THE END OF EACH RECIPROCATIVE STROKE, MEANS FOR SUPPLYING SCAVENGE AIR, MEANS FOR CONDUCTING SAID SCAVENGE AIR THROUGH THE INTERIOR OF SAID BACK CYLINDER HEAD, SAID PISTON ASSEMBLY HAVING A HOLLOW INTERIOR, SAID PISTON ASSEMBLY BEING ADAPTED TO CONDUCT A PORTION OF SAID SCAVENGE AIR THROUGH ITS HOLLOW INTERIOR, SAID WORKING CYLINDER HAVING WITHIN IT AN ANNULAR FRONT WORKING CHAMBER AND AN ANNULAR BACK WORKING CHAMBER, SAID VALVE PISTONS BEING ADAPTED TO CONTROL THE FLOW OF SCAVENGE AIR INTO SAID ANNULAR WORKING CHAMBERS SO AS TO SCAVENGE THE WORKING CHAMBERS, EACH WORKING CHAMBER HAVING A UNIFLOW TYPE SCAVENGING OPERATION EXHAUSTING THROUGH SAID EXHAUST PORTS, A CONNECTING ROD INTERCONNECTING SAID PORTION ASSEMBLY AND SAID CRANKSHAFT, SAID CONNECTING ROD BEING FASTENED TO SAID PISTON ASSEMBLY BY MEANS OF AN ARTICULATIVE JOINT (SUCH AS A WRIST PIN), SAID ARTICULATIVE JOINT BEING LOCATED WITHIN SAID WORKING PISTON, ONE END OF SAD CONNECTING ROD BEING LOCATED WITHIN SAID WORKING PISTON, A RECIPROCATING PARTITION MEMBER LOCATED INSIDE SAID PISTON ASSEMBLY AND SURROUNDING ONE END OF SAID CONNECTING ROD, SAID PARTITION MEMBER BEING FASTENED TO AND RECIPROCABLE WITH SAID PISTON ASSEMBLY, A SEAL STRUCTURE RECIPROCABLE WITHIN THE BORE IN SAID FRONT CYLINDER HEAD, SAID SEAL STRUCTURE BEING FASTENED TO SAID PARTITION MEMBER, MEANS FOR LUBRICATING SAID CRANKSHAFT WITH LUBE OIL, AND SAID PARTITION MEMBER AND SAID SEAL STRUCTURE SERVING AS A BARRIER TO INHIBIT THE INTERMIXING OF SAID SCAVENGE AIR AND SAID LUBE OIL.