Time delay device

Claim 1

A TIME DELAY DEVICE INCLUDING A HOUSING HAVING A PARTITION WALL THEREIN TO FORM A PAIR OF CHAMBERS, EACH OF SAID CHAMBERS HAVING AN OPENING THEREIN, A RECIPROCATING WORKING MEMBER IN EACH OF SAID CHAMBERS BEING ARRANGED AT OPPOSITE SIDES OF SAID WALL TO PARTITION EACH CHAMBER, A LIQUID DISPOSED ON BOTH SIDES OF SAID WALL IN CONTACTING RELATION WITH SAID WORKING MEMBERS, THE WORKING MEMBER IN THE FIRST OF SAID CHAMBERS BEING FLUID CONNECTED WITH A SOURCE OF FLUID UNDER PRESSURE THROUGH THE OPENING IN SAID FIRST CHAMBER FOR RESPONSE TO THE FLOW OF FLUID INTO AND OUT OF SAID FIRST CHAMBER, A RECIPROCALLY MOVABLE ACTUATING MEMBER IN THE SECOND OF SAID CHAMBERS MOVABLE THROUGH THE OPENING IN SAID SECOND CHAMBER AND CONNECTED TO THE WORKING MEMBER IN SAID SECOND CHAMBER, RESILIENT MEANS IN SAID SECOND CHAMBER FOR BIASING SAID ACTUATING MEMBER TOWARD SAID WALL, AND A FIRST AND SECOND VALVE MEANS ON SAID WALL PROVIDING FOR A REVERSED FLOW OF LIQUID THERETHROUGH AT DISSIMILAR RATES, SUCH THAT THE FLOW TO MOVE SAID ACTUATOR MEMBER IN A DIRECTION AWAY FROM SAID WALL IS AT A RATE FASTER THAN THE RATE OF FLOW IN A REVERSED DIRECTION EFFECTED BY SAID BIASING MEANS, WITH ONE OF SAID VALVE MEANS BEING OPERABLE TO AN OPEN POSITION BY MOVEMENT OF THE ACTUATING MEMBER IN SAID REVERSED DIRECTION.