Two-stroke-cycle engine with an admission port in the crankcase

Claim 1

IN A TWO-STROKE-CYCLE ENGINE OF THE TYPE HAVING A CONDUIT CONNECTING A SOURCE OF FUEL AND LUBRICANT WITH A CRANKCASE AND WHEREIN THE LATTER IS PROVIDED A ROTATABLY SUPPORTED CRANK DISC HAVING A PERIPHERY COOPERATING WITH THE CRANKCASE TO DEFINE AN ANNULAR CHAMBER WHICH IS ADAPTED TO ACCOMMODATE LUBRICANT TO FORM A SEAL BETWEEN THE DISC AND THE CRANKCASE, THE DISC HAVING A RECESS IN SAID PERIPHERY FOR CONVEYING FUEL AND LUBRICANT TOWARDS A CYLINDER, THE IMPROVEMENT COMPRISING A BUSH REMOVABLY SUPPORTED IN SAID CONDUIT AND IN PART PROJECTING FROM SAID CONDUIT INTO THE CRANKCASE A DISTANCE TO LEAVE THE BUSH SPACED FROM THE PERIPHERY OF THE DISC OUTSIDE OF SAID RECESS, SAID BUSH HAVING AN OPENING CONSTITUTING A PORT FOR ADMISSION OF FUEL AND LUBRICANT INTO SAID CRANKCASE WHEN SAID RECESS IS IN REGISTRY WITH SAID OPENING, SAID BUSH BEING COOPERATIVELY ASSOCIATED WITH THE PERIPHERY OF THE DISC TO MAINTAIN THE SEAL BETWEEN THE DISC AND THE CRANKCASE.