Engine starting device

Claim 1

IN AN ENGINE, IN COMBUSTION, A CYLINDER; A PAIR OF FLOATING PISTON MEANS RESPECTIVELY EXTENDING INTO SAID CYLINDER FOR RESPECTIVE MOVEMENT FROM OUTER DEAD CENTER POSITIONS INWARDLY TOWARD THE INTERIOR OF SAID CYLINDER TOWARD EACH OTHER TO INNER DEAD CENTER POSITIONS, RESPECTIVELY, AND THEN SIMULTANEOUSLY AND IN SYNCHRONISM FROM SAID INNER DEAD CENTER POSITIONS RESPECTIVELY BACK TO SAID OUTER DEAD CENTER POSITIONS; A PAIR OF HYDRAULIC MEANS OPERATIVELY CONNECTED TO SAID PAIR OF FLOATING PISTON MEANS FOR RESPECTIVELY URGING THE LATTER, AT LEAST DURING STARTING OF THE ENGINE, FROM SAID OUTER DEAD CENTER POSITIONS SIMULTANEOUSLY TOWARD EACH OTHER TO SAID INNER DEAD CENTER POSITIONS, RESPECTIVELY; BLOCKING MEANS OPERATIVELY CONNECTED TO SAID PAIR OF HYDRAULIC MEANS FOR TEMPORARILY BLOCKING MOVEMENT OF SAID PAIR OF PISTON MEANS BY SAID PAIR OF HYDRAULIC MEANS RESPECTIVELY FROM SAID OUTER TO SAID INNER DEAD CENTER POSITIONS, SAID BLOCKING MEANS INCLUDING A PAIR OF VALVES WHICH ARE RESPECTIVELY IN CLOSED POSITIONS PREVENTING COMMUNICATION BETWEEN SAID PAIR OF HYDRAULIC MEANS AND SAID PAIR OF PISTON MEANS WHILE SAID BLOCKING MEANS TEMPORARILY BLOCKS MOVEMENT OF SAID PAIR OF PISTON MEANS BY SAID PAIR OF HYDRAULIC MEANS; AND A SINGLE CONTROL MEANS OPERATIVELY CONNECTED WITH SAID BLOCKING MEANS FOR RENDERING THE LATTER INEFFECTIVE TO PREVENT MOVEMENT OF SAID PAIR OF PISTON MEANS BY SAID PAIR OF HYDRAULIC MEANS IN A MANNER SIMULTANEOUSLY RELEASING SAID PAIR OF PISTON MEANS FOR MOVEMENT BY SAID PAIR OF HYDRAULIC MEANS TOWARD EACH OTHER FROM SAID OUTER TO SAID INNER DEAD CENTER POSITIONS, RESPECTIVELY.