Hydraulic engine

Claim 1

A FLUID RECIPROCATING ENGINE COMPRISING A POWER CYLINDER, A FLUID POWERED PISTON DIVIDING SAID CYLINDER INTO FORWARD AND REARWARD CHAMBERS AND ADAPTED TO RECIPROCATE LONGITUDINALLY REARWARD AND FORWARD ALONG A LONGITUDINAL PATH WITHIN SAID CYLINDER, PRESSURE REVERSING VALVE MEANS CONNECTED TO THE FORWARD AND REARWARD CHAMBER OF SAID CYLINDER AND ADAPTED TO ALTERNATELY APPLY PRESSURE OF THE FORWARD AND REARWARD ENDS OF SAID CHAMBER FOR MOVING SAID PISTON ALTERNATELY FORWARD AND REARWARD ALONG SAID CYLINDER, SAID PRESSURE REVERSING MEANS COMPRISING A HOUSING AND A SPOOL, SAID HOUSING HAVING A LONGITUDINAL BORE, SAID SPOOL BEING CONTAINED WITHIN SAID BORE AND MOVABLE LONGITUDINALLY THEREIN FOR ALTERNATELY SUPPLYING AND EXHAUSTING FLUID TO SAID CYLINDER CHAMBER EACH END OF SAID SPOOL TOGETHER WITH SAID HOUSING DEFINING OPPOSING VALVE ACTUATING CHAMBERS, REVERSING VALVE ACTUATION MEANS MOUNTED ON SAID CYLINDER AND ACTUATED BY SAID POWER PISTON TO ALTERNATELY SUPPLY PRESSURE TO SAID VALVE ACTUATION CHAMBERS AT THE END OF THE POWER PISTON MOVEMENT IN EITHER ITS FORWARD OR REARWARD DIRECTION TO SHIFT SAID SPOOL WHEREBY SAID PRESSURE REVERSING VALVE MEANS WILL APPLY PRESSURE TO SAID PRESSURE REVERSING VALVE MEANS THE END OF THE FORWARD MOVEMENT OF SAID PISTON TO MOVE SAID PISTON REARWARDLY, AND WILL APPLY PRESSURE TO SAID REARWARD CYLINDER CHAMBER AT THE END OF THE REARWARD MOVEMENT TO MOVE SAID PISTON FORWARDLY TO THEREBY ENABLE THE PISTON TO RECIPROCATE FORWARDLY AND REARWARDLY ALONG ITS LONGITUDINAL PATH CONTINUOUSLY AND AUTOMATICALLY, EXHAUST VALVE MEANS ACTUATED BY SAID VALVE ACTUATION MEANS FOR SIMULTANEOUSLY EXHAUSTING THE VALVE ACTUATION CHAMBER OPPOSITE THAT BEING SUPPLIED BY SAID VALVE ACTUATION MEANS, FLUID PUMP MEANS FOR PROVIDING FLUID UNDER PRESSUREE TO SAID REVERSING VALVE MEANS AND SAID VALVE ACTUATION MEANS, AND MAIN CONTROL MEANS FOR INTERRUPTING COMMUNICATION BETWEEN SAID PUMP AND REVERSING VALVE MEANS.