Expanding bit screw driver

Claim 1

AN EXPANDING BIT SCREWDRIVER, COMPRISING A HANDLE; A LONGITUDINALLY SPLIT SHANK, INCLUDING A PAIR OF HALF-ROUND, ELONGATE, RESILIENT PARTS MOUNTED TOGETHER AT ONE END IN THE HANDLE IN FLAT FACE TO FLAT FACE, COEXTENSIVE RELATIONSHIP AND EXTENDING THEREFROM WITH LATERALLY DISPLACED PORTIONS HAVING BIT MEMBERS SERIALLY RELATED SIDE BY SIDE AND MUTUALLY CONTIGUOUS ALONG A RELATIVELY SHORT, DIAGONALLY ORIENTED SLIP PLANE TO FORM AN ELONGATE, COMPOSITE, NORMALLY RECTILINEAR BIT AT THE OPPOSITE END OF THE SHANK AND LONGITUDINALLY TAPERED, BIT-EXPANDING INTERCEPTORS EXTENDING BACKWARDLY FROM SAID BIT TOWARD THE HANDLE, EACH OF SAID PARTS BEING OF SUBSTANTIALLY UNIFORM TRANSVERSE DIMENSION ALONG ITS LENGTH FROM THE HANDLE TO THE INTERCEPTOR AND NORMALLY FITTING CLOSELY TOGETHER, BUT BOWING OUTWARDLY WHEN THE BIT IS EXPANDED ALONG SAID SLIP PLANE; AND AN ELONGATE SLEEVE ENCIRCLING AND EXTENDING LONGITUDINALLY OF THAT PORTION OF THE SHANK, FORWARDLY OF THE HANDLE, IN WHICH THE SAID PARTS ARE OF UNIFORM TRANSVERSE DIMENSIONS, AND BEING SLIDABLE ALONG THE SHANK, SAID SLEEVE HAVING RELATIVELY SHORT COLLARS CLOSELY ENCIRCLING THE SHANK TO GUIDE FORWARD AND BACKWARD SLIDING MOVEMENT OF SAID SLEEVE THEREALONG AND TO EXPAND SAID BIT BY ACTING ON SAID INTERCEPTORS DURING SAID FORWARD MOVEMENT, TO FORCE THE CORRESPONDING PORTIONS OF THE SHANK INWARDLY TOWARD EACH OTHER, THE REMAINDER OF THE LENGTH OF SAID SLEEVE BEING SPACED SUFFICIENTLY FROM THE SHANK TO PREVENT BINDING WHEN SAID SLEEVE IS SLID ALONG THE SHANK FOR EXPANDING SAID BIT.