Flow control valve mechanism

Claim 1

A FLOW CONTROL DEVICE INCLUDING AN INLET PASSAGE ADAPTED TO CONNECT TO A SOURCE OF FLUID UNDER PRESSURE, AN OUTLET PASSAGE DIRECTLY COMMUNICATING WITH SAID INLET PASSAGE, A VALVE MOVABLE INTO POSITIONS TO BLOCK THE DIRECT FLOW OF FLUID FROM SAID INLET PASSAGE TO SAID OUTLET PASSAGE OR TO PERMIT THE DIRECT FLOW OF FLUID THERETHROUGH, A DIVIDER PASSAGE COMMUNICATING WITH SAID INLET PASSAGE, A RETURN PASSAGE COMMUNICATING WITH SAID OUTLET PASSAGE, A VALVE ARRANGEMENT INCLUDING AN OPENING ADAPTED TO PROVIDE FOR COMMUNICATION BETWEEN SAID DIVIDER PASSAGE AND SAID RETURN PASSAGE, A SECOND VALVE MOVABLE TOWARD AND AWAY FROM SAID OPENING TO REGULATE THE FLUID FLOW THROUGH SAID OPENING TO SAID RETURN PASSAGE, SAID SECOND VALVE HAVING AN OPENING RESTRICTED RELATIVE TO SAID VALVE OPENING, A CONDUIT COMMUNICATING WITH SAID RESTRICTED OPENING, SAID FIRST VALVE BEING MOVABLE FROM AN OPEN POSITION TO BLOCK THE DIRECT FLOW OF FLUID WHEREUPON SAID SECOND VALVE IS MOVED AWAY FROM SAID VALVE OPENING AND A CERTAIN VOLUME OF FLUID FLOWS THROUGH SAID RESTRICTED OPENING AND A CERTAIN VOLUME FLOWS TO SAID RETURN OPENING, SAID FIRST VALVE BEING MOVABLE TO A SECOND POSITION TO BLOCK THE FLOW OF FLUID, AND MEANS ON SAID FIRST VALVE MOVABLE THEREWITH TO FURTHER RESTRICT THE FLOW THROUGH THE RESTRICTED OPENING WHEREUPON SAID SECOND VALVE IS MOVED A GREATER DISTANCE FROM SAID VALVE OPENING.