Spindle tip member for mounting a spool

Claim 1

IN COMBINATION WITH A SPINDLE HAVING A DETERMINABLE OUTER DIAMETER AND A SPOOL HAVING A LARGER INNER DIAMETER; APPARATUS FOR MOUNTING THE SPOOL ON SAID SPINDLE AND COMPRISING A TIP MEMBER DETACHABLY MOUNTED ON SAID SPINDLE AND CONCENTRIC THEREWITH, A CAM ON SAID TIP MEMBER AND CONCENTRIC THEREWITH, SAID CAM INCLUDING A PLURALITY OF EQUI-SPACED RADIAL PROTRUSIONS HAVING SLOPED SIDED DEFINING INTERVENING VALLEYS, A RING RETAINER ROTATABLE ON SAID TIP MEMBER AND DEFINING OPENINGS ALIGNED WITH SAID CAM, BALLS IN SAID OPENINGS AND DISPLACEABLE BY SAID CAM INTO POSITIONS OF ENGAGEMENT WITH SAID SPOOL BY RELATIVE ROTATION OF SAID SPINDLE AND SPOOL IN EITHER DIRECTION, SAID SPINDLE AND SPOOL BEING COUPLED TOGETHER IN DRIVING RELATION WITH SAID BALLS ENGAGED BY SAID CAM AGAINST SAID SPOOL, AND A CAP MEMBER ON SAID SPINDLE FOR LOCKING SAID CAM THEREON, SAID SPOOL AND SPINDLE BEING LONGITUDINALLY MOVABLE RELATIVE TO ONE ANOTHER WITH SAID BALLS IN THE VALLEYS OF THE CAM, SAID SPINDLE INCLUDING AN END PORTION OF REDUCED DIAMETER AND A SHOULDER THEREON SEPARATING THE END PORTION AND THE REMAINDER OF THE SPINDLE, SAID TIP MEMBER ABUTTING SAID SHOULDER, SAID END PORTION BEING PROVIDED WITH AN ANNULAR GROOVE SPACED FROM SAID SHOULDER, THE CAP MEMBER COMPRISING A WASHER ON SAID TIP MEMBER AND A RING IN SAID GROOVE, SAID RING BEING EFFECTIVE THROUGH SAID WASHER TO HOLD SAID TIP MEMBER AGAINST SAID SHOULDER.