Double piston pneumatic filing machine

Claim 1

A PNEUMATIC FILING MACHINE, COMPRISING: A BODY HAVING CYLINDER BORE MEANS, VALVE CHAMBER MEANS AND COMBINATION INTAKE AND EXHAUST PASSAGE MEANS THEREIN, SAID COMBINATION MEANS COMMUNICATING THE ENDS OF SAID CYLINDER BORE MEANS WITH SAID VALVE CHAMBER MEANS; PISTION MEANS SLIDINGLY RECEIVED WITHIN SAID CYLINDER BORE MEANS AND ADAPTED TO RECIPROCATE IN SAID CYLINDER BORE MEANS; VALVE MEANS POSITIONED IN SAID VALVE CHAMBER MEANS AND OPERABLY ASSOCIATED WITH SAID PISTON MEANS FOR ALTERNATLY ADMITTING FLUID UNDER PRESSURE TO ONE END OF SAID CYLINDER BORE MEANS AND VENTING THE OTHER END OF SAID CYLINDER BORE MEANS TO THE AMBIENT ATMOSPHERE IN RESPONSE TO THE RECIPROCATION OF SAID PISTON MEANS; AND TOOL CARRIER MEANS CLOSELY UNDERLYING SAID PISTON MEANS, AND MEANS DRIVINGLY CONNECTING THE PISTON MEANS WITH THE TOOL CARRIER MEANS ADJACENT THE FRONT END OF THE BODY, SAID CYLINDER BORE MEANS COMPRISING A PAIR OF PARALLEL JUXTAPOSITIONED CYLINDER BORES, SAID PISTON MEANS INCLUDING A PAIR OF DOUBLE ENDED PISTONS SLIDINGLY RECEIVED WITHIN SAID CYLINDER BORES, SAID BODY AND TOOL CARRIER MEANS BEING SUBSTANTIALLY TWICE AS LONG AS THE CYLINDER BORES WHEREBY THE TOOL CARRIER MEANS ARE RECIPROCATED BY FORCE EXERTED AT THE FORWARD ENDS THEREOF.