Indexing mechanism for reciprocating devices

Claim 1

IN A MACHINE FOR PERFORMING A MULTIPLE OF BENDS IN A LENGTH OF TUBING, A PAIR OF SPACED TUBE BENDING DEVICES, A RECIPROCAL RAM MOUNTING ONE OF SAID DEVICES, MEANS OPERABLE TO MOVE THE RAM FOR CARRYING THE DEVICES TOWARD AND AWAY FROM ONE ANOTHER DURING A TUBE BENDING OPERATION, AN AXIALLY DISPLACEABLE ROTATABLE TURRET, A PLURALITY OF STOP ELEMENTS SEATED LOOSELY IN SAID TURRET, MEANS ON THE RAM ENGAGEABLE WITH A SELECTED ONE OF SAID STOP ELEMENTS WHEN THE RAM IS MOVED IN ONE DIRECTION TO MOVE THE TURRET AXIALLY IN SAID DIRECTION, MEANS OPERABLE WHEN THE TURRET REACHES A PREDETERMINED POSITION AXIALLY TO REVERSE THE OPERATING STROKE OF THE RAM, MEANS TO RETURN THE TURRET TO ITS INITIAL POSITION, INDEXING MEANS FOR SAID TURRET, AND LEVER MEANS CONNECTING THE TURRET WITH SAID INDEXING MEANS OPERABLE DURING THE RETURN MOVEMENT OF THE TURRET TO POSITIVELY ACTUATE THE INDEXING MEANS AND TO ROTATE THE TURRET TO POSITION ANOTHER ONE OF SAID STOP ELEMENTS FOR ENGAGEMENT BY THE MEANS ON THE RAM DURING A SUCCEEDING OPERATING STROKE.