Casing pressure packer and sealer

Claim 1

A CASING PRESSURE PACKER AND SEALER USED IN COMBINATION WITH A CASING SEALING MACHINE DESIGNED TO DRIVE A FASTENER OVER A THROAT THROUGH WHICH A CASING END IS DRAWN, SAID THROAT HAVING AN END CLOSURE GATE, COMPRISING, A BASE DESIGNED TO CARRY A CASING SEALING MACHINE ON ONE END, SAID MACHINE HAVING A THROAT AND GATE, A FIRST PRESSURE CYLINDER MOUNTED ON THE OTHER END OF SAID BASE AND HAVING A FIRST PISTON AND FIRST PISTON ROD DIRECTED TOWARD AND IN LINE WITH SAID THROAT, A MOVABLE CARRIAGE ATTACHED TO THE END OF SAID FIRST PISTON ROD, A SECOND PRESSURE CYLINDER MOUNTED ON SAID CARRIAGE AND HAVING A SECOND PISTON AND SECOND PISTON ROD, A JAW ATTACHED TO THE END OF SAID SECOND PISTON ROD, A STATIONARY THRUST SUPPORT MOUNTED ON SAID CARRIAGE AHEAD OF SAID JAW AND DESIGNED SO THAT A CASING END FED FROM SAID THROAT MAY BE WOUND AROUND IT FOR GRIPPING BY SAID JAW, AND PRESSURE LEADS, OUTLETS AND SWITCHES CONNECTED TO SAID CYLINDERS AND ARRANGED IN A MANNER SUCH THAT WHEN A CASING END IS DRAWN THROUGH SAID THROAT AND WOUND ON SAID SUPPORT AND SAID GATE IS CLOSED TO ACTUATE A PRESSURE SWITCH, SAID SECOND PISTON ROD IS PUSHED AGAINST A CASING END AND SUPPORT TO CLAMP SAME FIRMLY, AND SAID FIRST PISTON ROD IS PULLED, WHEREBY A CLAMPED CASING IS DRAWN THROUGH SAID THROAT SO THAT CONTENTS THEREOF ARE PACKED TIGHTLY BEFORE A FASTENER EFFECTS SEALING OF A CASING END, AND PRESSURE IS RELIEVED AFTER SUCH SEALING.