Balanced rotary commutating valve

Claim 1

IN COMBINATION WITH A HYDRAULICALLY-OPERATED JAW CRUSHER, A PLUNGER CYLINDER, A PLUNGER MOUNTED FOR RECIPROCATING MOVEMENT IN SAID CYLINDER, A CRANKSHAFT CARRYING SAID PLUNGER AND BEING CONTINUOUSLY ROTATABLE TO IMPART RECIPROCATING MOVEMENT TO SAID PLUNGER, A RAM CYLINDER, AND A HYDRAULIC FLUID RECEIVING VESSEL, VALVE MECHANISM FOR PLACING SAID PLUNGER CYLINDER OUT OF COMMUNICATION WITH SAID RAN CYLINDER AND INTO COMMUNICATION WITH SAID VESSEL DURING ALTERNATE STROKES OF SAID PLUNGER AND INTO COMMUNICATION WITH SAID RAM CYLINDER AND OUT OF COMMUNICATION WITH SAID VESSEL DURING INTERVENING STROKES OF SAID PLUNGER WHICH COMPRISES A HOUSING, A CYLINDRICAL VALVE MEMBER ROTATABLY MOUNTED IN SAID HOUSING AND HAVING AN ELONGATED VALVE CHAMBER THEREIN, SAID HOUSING HAVING A FIRST PASSAGE IN CONSTANT COMMUNICATION WITH SAID PLUNGER CYLINDER, SAID VALVE MEMBER HAVING AN OPENING IN CONSTANT COMMUNICATION WITH SAID FIRST PASSAGE AND SAID CHAMBER AND FIRST AND SECOND PAIRS OF DIAMETRICALLY OPPOSITE PORTS COMMUNICATING WITH SAID CHAMBER, SAID HOUSING HAVING A SECOND PASSAGE IN CONSTANT COMMUNICATION WITH SAID RAM CYLINDER, A THIRD PASSAGE IN CONSTANT COMMUNICATION WITH SAID VESSEL, A FIRST ANNULAR PASSAGE IN CONSTANT COMMUNICATION WITH SAID SECOND PASSAGE, AND A SECOND ANNULAR PASSAGE IN CONSTANT COMMUNICATION WITH SAID THIRD PASSAGE, SAID VALVE MEMBER BEING ROTATABLE SEQUENTIALLY TO OPEN SAID FIRST PAIR OF PORTS WHILE CLOSING SAID SECOND PAIR OF PORTS AND TO CLOSE SAID FIRST PAIR OF PORTS WHILE OPENING SAID SECOND PAIR OF PORTS, AND MEANS DRIVABLY CONNECTING SAID VALVE MEMBER AND SAID CRANKSHAFT.