Corner fastening

Claim 1

A CORNER FASTENING OF THE AFORESAID CHARACTER COMPRISING, A CORNER MEMBER OF ANGULATED FORMATION IN SECTION INCLUDING SIDE WALLS HAVING A TRANSVERSELY EXTENDING OPENING FORMED WITH SPACED SIDE EDGES AND SPACED UPPER AND LOWER EDGES, A COOPERATING MEMBER EXTENDING LONGITUDINALLY OF SAID CORNER MEMBER HAVING UPPER AND LOWER ENLARGED ENDS EXTENDING TRANSVERSELY OF SAID CORNER MEMBER WITH EACH OF THE ENLARGED ENDS HAVING PERIPHERAL EDGE PORTIONS DISPOSED IN ENGAGEMENT WITH ONE FACE OF SAID CORNER MEMBER, ANGULARLY DISPOSED FRAME PARTS EACH HAVING A SIDE FLANGE AND AN INWARDLY DIRECTED FLANGE, SAID INWARDLY DIRECTED FLANGES HAVING MITERED ENDS SECURED TOGETHER AND EXTENDING INTO SAID OPENING AND BETWEEN SAID ENLARGED ENDS AND WITH THE SIDE FLANGES OF SAID FRAME PARTS DISPOSED AGAINST THE SIDE EDGES RESPECTIVELY OF SAID OPENING, A WEDGING MEMBER ARRANGED IN SAID OPENING BETWEEN SAID UPPER AND LOWER ENLARGED ENDS AND IN ABUTTING RELATION WITH SAID SIDE FLANGES, AND MEANS FASTENING SAID WEDGING MEMBER TO SAID COOPERATING MEMBER HAVING SAID ENLARGED ENDS AND WEDGING THE SIDE FLANGES OF SAID FRAME PARTS AGAINST THE SIDE EDGES RESPECTIVELY OF SAID OPENING AND TIGHTENING SAID ENLARGED ENDS AGAINST SAID CORNER MEMBER ABOVE AND BELOW SAID OPENING TO THEREBY SECURE SAID PARTS TOGETHER IN TIGHTENED ASSEMBLED RELATION WITH SAID CORNER MEMBER.