Power transmission and conveying chain

Claim 1

A CHAIN COMPRISING A PAIR OF INNER LINKS SPACED APART LATERALLY BY A TUBULAR MEMBER FIXED AGAINST ROTATION RELATIVE TO SAID INNER LINKS AND EXPOSED OUTWARDLY THROUGHOUT THE ENTIRE LATERAL SPACE BETWEEN SAID INNER LINKS FOR DIRECT COOPERATION BETWEEN SAID INNER LINKS WITH A SPROCKET, OUTER LINKS HAVING OPPOSITE ENDS DISPOSED WITH THEIR INNER SURFACES OVER THE OUTER SURFACES OF THE ENDS OF SAID INNER LINKS AND HAVING OPENINGS WITH OPPOSITE FLAT SURFACES AND ARCUATE SURFACES BETWEEN SAID FLAT SURFACES IN AXIAL ALIGNMENT WITH SAID TUBULAR MEMBER, A PIN PASSING THROUGH AND ROTATABLE IN SAID TUBULAR MEMBER AND HAVING ENDS WITH CORRESPONDING FLAT SURFACES AND ARCUATE SURFACES BETWEEN SAID FLAT SURFACE PASSING THROUGH THE CORRESPONDING OPENS IN SAID OUTER LINKS AND FIXED AGAINST ROTATION RELATIVE TO SAID OUTER LINKS, SAID OUTER LINKS BEING FIXED AT ALL TIMES AGAINST LONGITUDINAL MOVEMENT IN A DIRECTION ACROSS THE AXIS OF SAID PIN, MEANS ON OPPOSITE ENDS OF SAID PIN AND COACTING WITH THE OUTER SURFACE OF SAID OUTER LINKS FOR RETAINING THE OUTER LINKS IN PLACE ON THE ENDS OF SAID PIN WITH THE ENDS OF THEIR INNER SURFACES DISPOSED OVER THE ENDS OF THE OUTER SURFACES OF SAID INNER LINKS, THE MEANS AT ONE END AT LEAST OF SAID PIN FOR RETAINING THE OUTER LINK IN PLACE COMPRISING GROOVES IN SAID ARCUATE SURFACES OF SAID PIN, AND A SPLIT SNAP RING INDIVIDUAL TO A SINGLE PIN AND HAVING RESILIENCE OF A CHARACTER TO SELF CONTRACT INWARDLY INTO SAID GROOVES IN POSITION COACTING WITH THE OUTER SURFACE OF THE END OF THE ADJACENT OUTER LINK FOR RETAINING SAID OUTER LINK IN PLACE ON SAID PIN, SAID SNAP RING BEING ADAPTED TO BE EXPANDED OUTWARDLY AGAINST ITS SELF CONTRACTING RESILIENCE FOR REMOVAL FROM SAID AND APPLICATION TO THE GROOVE IN SAID PIN.