Arrangement for heating the lubricating oil of internal combustion engines

Claim 1

ARRANGEMENT FOR HEATING THE LUBRICATION OIL OF AN INTERNAL COMBUSTION ENGINE COMPRISING IN COMBINATION A CYLINDER HEAD HAVING A DOUBLE WALL PORTION AT LEAST ADJACENT ONE SIDE, A TRANSVERSE WALL INSIDE SAID DOUBLE WALL PORTION DEFINING A LUBRICATING OIL COMPARTMENT ALONG SAID ONE SIDE, A CARBURETOR, AN OIL METERING DEVICE FOR DISPENSING OIL INTO THE CARBURETOR INTAKE, AN OIL PUMP, FIRST CONDUIT MEANS FOR CONNECTING SAID OIL PUMP TO SAID OIL METERING DEVICE, A HOUSING FOR SAID OIL PUMP MOUNTED IN HEAT EXCHANGE RELATIONSHIP WITH SAID OIL COMPARTMENT, AN OIL CANAL IN SAID PUMP HOUSING HAVING AN INLET AND COMMUNICATING WITH SAID OIL COMPARTMENT, SECOND CONDUIT MEANS FOR CONNECTING SAID OIL METERING DEVICE TO SAID OIL COMPARTMENT FOR RETURNING ANY QUANTITY OF LUBRICATING OIL PUMPED IN EXCESS OF THAT METERED TO REGULATE THE HEAT TRANSFER TO SAID OIL COMPARTMENT, AND THIRD CONDUIT MEANS HEATED BY THE EXHAUST GASES FROM THE ENGINE AND CONDUCTED THROUGH SAID OIL COMPARTMENT FOR HEATING THE OIL IN SAID COMPARTMENT, WHEREIN SAID THIRD CONDUIT MEANS IS LOCATED DIRECTLY ADJACENT SAID OIL CANAL INLET.