Universal spindle coupling and the like

Claim 1

IN A UNIVERSAL SPINDLE COUPLING AND THE LIKE, IN COMBINATION, A HEAD HAVING A SETBACK CENTER AND A PLURALITY OF AXIALLY EXTENDING ANGULARLY SPACED SECTORS WHICH ARE QUADRANTLY POSITIONED, A COOPERATING HEAD HAVING A SETBACK CENTER AND THE SAME PLURALITY OF AXIALLY EXTENDING ANGULARLY SPACED RIBS, SAID SECTORS AND RIBS BEING UNIFORMLY SPACED ABOUT THE AXIS OF THEIR RESPECTIVE HEADS AND IN RELATIVELY LOOSELY INTERFITTING AXIALLY OVERLAPPING RELATION, SAID SECTORS AND RIBS FURTHER HAVING OPPOSED PARALLEL FACES RESPECTIVELY SPACED APART, SAID SECTOR FACES BEING PROVIDED WITH OPPOSED CYLINDRICAL BORE DEPRESSIONS DESCRIBED ABOUT AN AXIS NORMAL TO AND INTERSECTING THE LONGITUDINAL AXIS OF SAID HEAD MIDWAY BETWEEN SAID SECTOR FACES, SAID DEPRESSIONS EXTENDING INWARDLY FROM THE OUTER EDGE OF SAID SECTOR FACES RESPECTIVELY, A SEGMENTAL PAD HAVING A CYLINDRICAL SURFACE TO FIT IN EACH DEPRESSION AND A PAD FACE ADAPTED TO BE FLUSH WITH ITS RESPECTIVE SECTOR FACE, SAID PAD FACE HAVING A SPHERICAL RECESS THEREIN DESCRIBED ABOUT A CENTER ON SAID AXIS ABOUT WHICH SAID DEPRESSIONS ARE DESCRIBED, A SPHERICAL BEARING SEGMENT HAVING A SPHERICAL SURFACE TO ENGAGE SAID RECESS AND A FLAT SURFACE ENGAGE THE ADJOINING FACE OF THE ADJOINING RIB, SAID BEARING SEGMENTS ON OPPOSITE SIDES OF EACH RIB HAVING A SMALL AGGREGATE SECANT CLEARANCE WHEN THEIR CENTERLINES ARE COINCIDENT.