Apparatus for transfer of glassware

Claim 1

A RECIPROCATING MOTOR CONNECTED FOR DRIVING AN OSCILLATORY TRANSFER ARM, SAID MOTOR COMPRISING A FLUID-OPERATED CYLINDER-PISTON ASSEMBLY, THE PISTON BEING CONNECTED THROUGH A PISTON ROD TO DRIVE SAID TRANSFER ARM, THE CYLINDER HAVING CLOSED ENDS, AN ADJUSTABLE HEAD MEMBER WITHIN SAID CYLINDER AND INCLUDING MEANS ADJUSTABLY CONNECTED TO THE CYLINDER FOR VARYING THE OPERATING LENGTH OF STROKE OF THE PISTON, SAID HEAD MEMBER DEFINING A FLUID CHAMBER BETWEEN IT AND THE HEAD END OF THE CYLINDER, A FLUID PORT CONNECTED TO SAID CHAMBER ADAPTED TO ALTERNATIVELY EXHAUST OR INTRODUCE FLUID THEREIN, AN AXIAL CYLINDRICAL BORE IN SAID HEAD MEMBER, A FLUID PASSAGE IN SAID HEAD MEMBER CONNECTING SAID CYLINDRICAL BORE AND SAID FLUID CHAMBER, AN INDEPENDENT PASSAGE THROUGH SAID HEAD MEMBER DEFINING A CONNECTION FOR FLOW OF FLUID BETWEEN SAID FLUID CHAMBER AND THE CYLINDER, AN ADJUSTABLE NEEDLE VALVE IN SAID INDEPENDENT PASSAGE FOR RESTRICTING THE FLOW OF FLUID THERETHROUGH, AND A TAPERED AXIALLY PROJECTING MEMBER ON THE HEAD-END SURFACE OF THE PISTON ARRANGED TO REGISTER WITH SAID CYLINDRICAL BORE AND ENTER THEREIN NEAR THE END OF THE STROKE OF THE PISTON, SAID TAPERED MEMBER PROGRESSIVELY RESTRICTING THE FLOW OF EXHAUST FLUID FROM THE CYLINDER AS IT MOVES FARTHER INTO SAID CYLINDRICAL BORE, WHEREBY THE REMAINDER OF THE STROKE OF THE PISTON IN THAT DIRECTION IS CUSHIONED.