Pressure fluid actuated power means for a veneer lathe

Claim 1

IN A PRESSURE FLUID ACTUATED RECIPROCATING-TYPE POWER MEANS, A CYLINDER ASSEMBLY HAVING A FIRST CYLINDRICAL APERTURE THEREIN CLOSED AT BOTH ENDS, A FIRST PISTON ASSEMBLY HAVING ONE END PROJECTING INTO SAID FIRST CYLINDRICAL APERTURE FROM ONE END OF SAID CYLINDER ASSEMBLY, SAID FIRST PISTON ASSEMBLY HAVING A FIRST PISTON HEAD MEMBER ON SAID END THEREOF SLIDEABLE IN SAID FIRST CYLINDRICAL APERTURE, SAID FIRST PISTON ASSEMBLY HAVING A SECOND CYLINDRICAL APERTURE THEREIN, A SECOND PISTON ASSEMBLY HAVING ONE END PROJECTING INTO SAID SECOND CYLINDRICAL APERTURE, SAID SECOND PISTON ASSEMBLY HAVING A SECOND PISTON HEAD ON SAID END THEREOF AND AN AXIALLY EXTENDING APERTURE OPENING INTO SAID END THEREOF, A FIRST BOSS ON THE END OF SAID CYLINDER ASSEMBLY OPPOSITE SAID ONE END, PROJECTING AXIALLY INTO SAID FIRST CYLINDER CHAMBER AND SAID FIRST PISTON HEAD WHEN SAID FIRST PISTON HEAD IS ADJACENT TO SAID END OF SAID CYLINDER ASSEMBLY, A SECOND BOSS OF LESS DIAMETER THAN THE EXTERNAL DIAMETER OF SAID FIRST BOSS FIXED TO SAID END OF SAID CYLINDER ASSEMBLY TO WHICH SAID FIRST BOSS IS FIXED AND CONCENTRIC WITH SAID FIRST BOSS, SAID SECOND BOSS PROJECTING INTO THE INTERIOR OF SAID FIRST CYLINDRICAL APERTURE A DISTANCE GREATER THAN THE PROJECTION OF SAID FIRST BOSS AND INTO SAID APERTURE IN SAID SECOND PISTON ASSEMBLY, SEALING MEANS CARRIED BY SAID FIRST PISTON ASSEMBLY ADAPTED TO ENGAGE THE EXTERIOR OF SAID FIRST BOSS, SEALING MEANS CARRIED BY SAID SECOND PISTON ASSEMBLY IN ENGAGEMENT WITH THE EXTERIOR OF SAID SECOND BOSS, AND MEANS FOR SELECTIVELY CONNECTING OPPOSITE ENDS OF SAID FIRST AND SECOND CYLINDRICAL APERTURES TO A SOURCE OF FLUID PRESSURE AND TO DISCHARGE MEANS, SAID MEANS COMPRISING FLUID INGRESS AND EGRESS PORT MEANS OPENING INTO THE PROJECTING ENDS OF SAID FIRST AND SECOND BOSSES AND FLUID CONDUIT MEANS COMMUNICATING BETWEEN SAID APERTURE IN SAID SECOND PISTON ASSEMBLY AT THE PROJECTING END OF SAID SECOND BOSS AND SAID SECOND CYLINDRICAL APERTURE ADJACENT TO THE SIDE OF SAID SECOND PISTON HEAD REMOTE FROM SAID END OF SAID CYLINDER ASSEMBLY FROM WHICH SAID BOSSES PROJECT.