Aligning means for stuffing boxes

Claim 1

IN A STUFFING BOX STRUCTURE INCLUDING A STUFFING BOX BODY ADAPTED FOR PASSAGE OF A RECIPROCATING ROD THERETHROUGH, AN ALIGNER COMPRISING A NIPPLE HAVING ONE END ADAPTED TO BE ATTACHED TO A TUBING OF A WELL HEAD, A PIPE ON SAID STUFFING BOX BODY, THE OPPOSITE END OF SAID NIPPLE BEING ADJACENT THE END OF SAID PIPE AND BEING IN SUBSTANTIALLY AXIAL ALIGNMENT THEREWITH FOR PASSAGE OF SAID ROD THERETHROUGH, SAID NIPPLE AND SAID PIPE EACH HAVING SUBSTANTIALLY THE SAME OUTSIDE DIAMETER AT THEIR ADJACENT END PORTIONS AND HAVING A GROOVE EXTENDING CIRCUMFERENTIALLY IN THE OUTSIDE SURFACE THEREOF, EACH OF SAID GROOVES HAVING A FIRST RADIAL SIDE WALL ADJACENT THE PROXIMATE ENDS OF THE NIPPLE AND THE PIPE AND A SECOND RADIAL SIDE WALL REMOTE FROM SAID PROXIMATE ENDS AND A CYLINDRICAL BOTTOM SURFACE EXTENDING BETWEEN SAID SIDE WALLS, A PAIR OF SEMI-CYLINDRICAL CLAMP MEMBERS, EACH OF SAID MEMBERS HAVING RADIAL FLANGES ALONG ADJACENT AXIAL EDGES THEREOF, SAID CLAMP MEMBERS HAVING WALL PORTIONS ALONG OPPOSITE ENDS THEREOF, EACH OF SAID WALL PORTIONS HAVING OPPOSITE PLANE SURFACES EXTENDING RADIALLY INTO THE GROOVES, EACH OF SAID PLANE SURFACES HAVING A RADIAL HEIGHT SUBSTANTIALLY GREATER THAN THE DEPTH OF THE GROOVE, SAID WALL PORTIONS TERMINATING IN A CIRCULAR EDGE OF SUBSTANTIALLY THE SAME