Pipe connections

Claim 1

A PIPE HAVING AN ANNULAR UNION BOX AT ONE END AND AN ANNULAR UNION PIN AT THE OTHER END, SAID BOX HAVING AN INTURNED RADIAL FLANGE AND SAID PIPE HAVING AT SAID ONE END A PAIR OF EXTERNAL UPSET BUCKLED FLANGES BETWEEN WHICH SAID RADIAL FLANGE OF THE BOX IS HELD FIXEDLY AGAINST BOTH AXIAL MOTION AND ROTATION, SAID BUCKLED FLANGES BEING SPACED AXIALLY FROM THE END FACE OF SAID ONE END OF THE PIPE LEAVING A TIP THEREBETWEEN, SAID BOX HAVING AN UNTHREADED PORTION ADJACENT SAID INTURNED FLANGE, SAID UNTHREADED PORTION INCLUDING A TAPERED BOTTOM CONVERGING TOWARD SAID INTURNED FLANGE, THERE BEING A RUBBER SEAL RING DISPOSED IN THE ANNULUS BETWEEN SAID UNTHREADED PORTION AND SAID TIP, SAID BOX HAVING A THREADED PORTION ADJACENT SAID UNTHREADED PORTION, SAID THREADED PORTION HAVING A FLAT CRESTED THREAD WITH STEEP FLANKS AND THE THRED RUNOUT ADJACENT SAID UNTHREADED PORTION PROVIDING A RIGHT ANGLE SHOULDER SPACED AXIALLY BEYOND SAID END FACE OF THE PIPE, SAID RUBBER RING ABUTTING SAID SHOULDER, SAID OTHER END OF THE PIE HAVING A PAIR OF AXIALLY SPACED ANNULAR OUTWARDLY PROJECTING PORTIONS BETWEEN WHICH SAID PIN IS ROTATABLY AND AXIALLY SLIDABLY DISPOSED, THE ONE OF SAID PROJECTING PORTIONS NEAREST THE END FACE OF SAID OTHER PIPE END BEING DISPOSED AT THE EXTREME END THEREOF AND COMPRISING AN EXTERNALLY UPSET BUCKLED FLANGE, ONE END OF SAID PIN BEING ADAPTED TO BEAR AGAINST SAID FLANGE, A PORTION OF SAID PIN ADJACENT SAID ONE END OF THE PIN BEING THREADED CORRELATIVE TO THE BOX THREAD, THE CREST DIAMETER OF THE PIN THREAD EXCEEDING THE DIAMETER OF SAID FLANGE ON SAID OTHER END OF THE PIPE, SAID PIN HAVING A LARGER DIAMETER PORTION ADJACENT SAID THREADED PORTION, THERE BEING A SHOULDER FORMED THEREBETWEEN ADAPTED TO ENGAGE THE END FACE OF A BOX LIKE SAID BOX BUT ON ANOTHER PIECE IF PIPE IN WHICH POSITION SAID ONE OF SAID OUTWARDLY PROJECTING PORTIONS IS ADAPTED TO ENGAGE THE RUBBER SEAL RING LIKE SAID SEAL RING BUT ON SAID OTHER PIECE OF PIPE AND COMPRES SAME AXIALLY TO FORM A SEAL THEREWITH AND TO FOCE SAME INTO THE TAPERED BOTTOM OF A BOX LIKE SAID BOX BUT ON SAID OTHER PIECE OF PIPE TO COMPRESS THE SEAL RING RADIALLY INWARDLY TO SEAL WITH THE TIP OF SAID OTHER PIPE.