Threadless coupling

Claim 1

IN A THREADLESS COUPLING, THE COMBINATION OF A FIRST MEMBER HAVING A CENTRAL BORE AND HAVING AN ANNULAR SUNKEN RECESS AT ITS EXTERIOR DISPOSED IN A PLANE INTERSECTING THE AXIS OF SAID BORE AND BEING CONCENTRIC WITH SAID BORE; A SECOND MEMBER INSERTED INTO SAID BORE AND HAVING AN ANNULAR SUNKEN RECESS AT ITS EXTERIOR OF MUCH SMALLER DIAMETER THAN SAID FIRST MENTIONED RECESS AND BEING DISPOSED OUTWARDLY OF SAID BORE AND IN A PLANE PARALLEL TO AND CLOSED ADJACENT THE PLANE IN WHICH SAID RECESS OF SAID FIRST MEMBER IS DISPOSED AND BEING CONCENTRIC WITH SAID BORE; AND A ONE-PIECE KEY HAVING A RECTANGULAR PLATE PORTION FORMED WITH A LENGTHWISE EXTENDING ELONGATE SLOT AT THE MIDDLE THEREOF AND BEING PROVIDED WITH AN OPEN END AT ONE END OF SAID PLATE PORTION AND WITH A SEMI-CIRCULAR CLOSED END AND PROVIDING A PAIR OF SPACED INWARDLY FACING PARALLEL EDGES EXTENDING INTO SAID RECESS OF SAID SECOND MEMBER WITH THE EDGE PROVIDED BY SAID SEMI-CIRCULAR CLOSED END BEING SEATED IN SAID LAST MENTIONED RECESS, AND SAID KEY HAVING AN L-SHAPED FORMATION ON ONE FACE AT OPPOSITE SIDES EXTENDING LENGTHWISE FROM ONE END OF SAID PLATE PORTION TO THE OTHER AND PROVIDING A PAIR OF SPACED INWARDLY FACING PARALLEL EDGES DISPOSED IN A PLANE PARALLEL TO AND CLOSELY ADJACENT THE PLANE IN WHICH SAID FIRST MENTIONED PAIR OF EDGES ARE PROVIDED AND BEING SPACED APART A MUCH GREATER DISTANCE THAN SAID FIRST MENTIONED PAIR OF EDGES AND EXTENDING INTO SAID RECESS OF SAID FIRST MEMBER, WHEREBY SAID MEMBERS ARE COUPLED.