Apparatus for hydraulically pressurizing pipe

Claim 1

IN APPARATUS FOR SUBJECTING PIPE TO INTERNAL HYDRAULIC PRESSURE, SAID APPARATUS HAVING A FRAME AND A FIRST HEAD FOR SEALINGLY ENGAGING ONE END OF A PIPE, THE INVENTION COMPRISING A CHAIN DISPOSED ON SAID FRAME AND EXTENDING LONGITUDINALLY THEREOF FOR MOVEMENT THEREALONG, A SECOND HEAD FOR SEALINGLY ENGAGING THE OTHER END OF SAID PIPE AND BEING CONNECTED TO SAID CHAIN AND MOVABLE THEREWITH TOWARD AND AWAY FROM SAID FIRST HEAD, SAID CHAIN BEING ADAPTED TO BE DRIVINGLY CONNECTED TO MOTOR MEANS FOR MOVING IT ALONG SAID FRAME TO CAUSE SAID SECOND HEAD TO TRAVEL A PATH TOWARDS AND AWAY FROM SAID FIRST HEAD, AT LEAST ONE SADDLE HAVING A MOUNTING WHICH PERMITS TRAVEL UPON SAID FRAME INTERMEDIATE OF SAID TWO HEADS FOR SUPPORTING SAID PIPE BETWEEN ITS ENDS, SAID MOUNTING BEING SUCH THAT ENGAGEMENT OF SAID SADDLE BY SAID SECOND HEAD UPON TRAVEL TOWARDS SAID FIRST HEAD ADVANCES SAID SADDLE TOWARDS SAID FIRST HEAD, MEANS CONNECTED TO SAID SADDLE AND POSITIONED TO ENGAGE A SADDLE MOVING MEANS JOINED TO SAID CHAIN AND ADVANCE SAID SADDLE AWAY FROM SAID FIRST HEAD WHEN SAID CHAIN MOVES ALONG SAID FRAME TO CONVEY SAID SECOND HEAD AWAY FROM SAID FIRST HEAD, SPROCKET MEANS IN ENGAGEMENT WITH SAID CHAIN, LOCK MEANS DISPOSED ADJACENT SAID SPROCKET MEANS AND HAVING A MEMBER MOVABLE INTO AND OUT OF ENGAGEMENT WITH SAID SPROCKET MEANS, ENGAGEMENT OF SAID SPROCKET MEANS BY SAID MEMBER EFFECTING A LOCK UPON SAID CHAIN AND SAID MOVABLE HEAD TO PREVENT TRAVEL OF SAID MOVABLE HEAD TOWARD AND AWAY FROM SAID FIRST HEAD.