Hydraulic pump mechanism

Claim 1

IN A HYDRAULIC PUMP INCLUDING A ROTATBLE CAM, AN ANNULAR CYLINDER BLOCK DISPOSED RADIALLY ABOUT SAID CAM TO PROVIDE A CENTRALLY LOCATED SUPPLY CHAMBER, SAID BLOCK HAVING A PLURALITY OF BORES WITH THEIR RESPECTIVE AXES COINCIDENT WITH A PLANE OF ROTATION OF SAID CAM, SAID BLOCK HAVING AN OUTLET PORT LYING IN A PLANE COINCIDENT WITH SAID FIRST MENTIONED PLANE, AN OUTLET CONDUIT EXTENDING FROM ONE OF SAID BORES ACROSS THE REMAINING BORES AND TERMINATING IN AN OUTLET BETWEEN SAID ONE BORE AND THE LAST OF THE SUCCESSIVE ONES OF SAID REMAINING BORES, AND A PLUG IN EACH OF SAID BORES TERMINATING ADJACENT SAID OUTLET CONDUIT AND HAVING A RECESS INTERIORLY OF SAID BORE; THE COMBINATION WITH A CYLINDER IN EACH OF SAID BORES DISPOSED BETWEEN SAID OUTLET CONDUIT AND SAID SUPPLY CHAMBER, SAID CYLINDER HAVING AN OUTLET VALVE SEAT ADJACENT SAID OUTLET CONDUIT NORMALLY ENGAGED BY AN OUTLET BALL VALVE BIASED BY A SPRING IN THE RECESS, SAID CYLINDER HAVING DIAMETRICALLY OPPOSED APERTURES, OF A PIN SECURED IN ONE OF SAID APERTURES AND EXTENDING TO A POINT ADJACENT THE OTHER OF SAID APERTURES, SAID OTHER OF SAID APERTURES HAVING AN INLET VALVE SEAT THEREIN, AN INLET BALL VALVE DISPOSED BETWEEN SAID INLET VALVE SEAT AND SAID PIN, AN INLET GROOVE IN THE OUTER PERIPHERY OF SAID CYLINDER EXTENDING FROM SAID OTHER APERTURE TO SAID SUPPLY CHAMBER, A PISTON IN SAID CYLINDER ENGAGING SAID CAM, AND A COIL SPRING ON SAID PISTON REACTING BETWEEN SAID CYLINDER AND PISTON TO BIAS SAID PISTON INTO ENGAGEMENT WITH SAID CAM.