Grain dumper

Claim 1

IN AN END TILT GRAIN CAR DUMPING MECHANISM INCLUDING A MATERIAL RECEIVING PIT HAVING LOAD-BEARING END WALLS AND SIDE WALLS FOR SUPPORTING A TILTABLE CRADLE STRUCTURE MOUNTED OVER SAID PIT, A FOUNDATION STRUCTURE COMPRISING A PLURALITY OF SPHERICAL PIVOT MEMBERS MOUNTED ON SAID SIDE WALLS AND A WELL ASSEMBLY DISPOSED IN EACH OF SAID END WALLS; SAID WELL ASSEMBLIES BEING ADAPTED TO SUPPORT THE ENDS OF LEAD TRACKS TERMINATING AT SAID END WALLS; AND A TILTABLE CRADLE STRUCTURE MOUNTED OVER SAID PIT, SAID CRADLE STRUCTURE INCLUDING (A) A PLURALITY OF WING MEMBERS EXTENDING EXTERNALLY FROM SAID CRADLE TO PROJECT OVER SAID SIDE WALLS; (B) SOCKETS FORMED IN THE LOWER SURFACE OF SAID WING MEMBERS, EACH SOCKET BEING ADAPTED TO COOPERATE WITH AN ASSOCIATED SPHERICAL PIVOT MEMBER ON THE SIDE WALLS SO AS TO PIVOTALLY MOUNT SAID CRADLE FOR TILTING; (C) SAID CRADLE INCLUDING A LONGITUDINAL CHANNEL PORTION IN EACH END THEREOF; (D) A PAIR OF TROLLEYS MOUNTED AND MOVABLE IN SAID CHANNEL AND WELL ASSEMBLIES; EACH SAID TROLLEY HAVING ROLLERS THEREON AND INCLUDING A COMBINED CAR CLAMP AND CRADLE LOCK ADAPTED, IN A FIRST POSITION, TO SECURE THE ENDS OF SAID CRADLE TO THE ADJACENT WELL ASSEMBLIES IN SAID END WALLS SIMULTANEOUSLY CLAMPING SAID CAR ON THE CRADLE AND, IN A SECOND POSITION, TO FREE THE ENDS OF SAID CRADLE FROM THE WELL AS SEMBLIES SIMULTANEOUSLY UNCLAMPING THE CAR FROM THE CRADLE; THE CRADLE LOCK OF EACH TROLLEY INCLUDING MOVABLE MEMBERS SUSPENDED THEREFROM AND ADAPTED IN SAID FIRST POSITION, TO EXPAND AND ENGAGE SAID CRADLE CHANNEL AND THE ASSOCIATED WELL ASSEMBLY; (E) A TRIP DEVICE IN EACH WELL ASSEMBLY FOR ACTUATING THE MOVABLE MEMBERS TO SAID FIRST POSITION; AND (F) A PLURALITY OF HYDRAULIC CYLINDERS MOUNTED TO SAID PIT SIDE WALLS ADJACENT THE SPHERICAL MEMBERS FOR RAISING SEQUENTIALLY EACH END OF THE CRADLE IN A TILTING OPERATION.