Concrete wall form

Claim 1

IN A CONCRETE FORM, A PAIR OF ADJACENT CONCRETE FORM MEMBERS EACH HAVING A PANEL WALL WITH AN EDGE MEMBER EXTENDING THEREFROM ALONG ADJACENT MARGINAL EDGES THEREOF, SAID EDGE MEMBERS HAVING FLAT OPPOSED INNER AND OUTER FACES AND ADAPTED TO BE POSITIONED WITH THE FLAT OUTER FACES IN FACE TO FACE RELATION, SAID EDGE MEMBERS HAVING A PLURALITY OF ALIGNED OPENINGS THEREIN, A HARDENED STEEL RING RIGIDLY FIXED TO ONE OF SAID EDGE MEMBERS IN SURROUNDING RELATION TO EACH OF SAID OPENINGS THEREIN AND IN PROJECTING RELATION TO SAID INNER FACE THEREOF, SAID HARDENED STEEL RINGS EACH TERMINATING IN A FLAT FACE SPACED FROM THE INNER FACE OF SAID ONE EDGE MEMBER, SAID HARDENED STEEL RINGS EACH HAVING AN OPENING THEREIN AXIALLY ALIGNED WITH THE RESPECTIVE OPENING IN SAID ONE EDGE MEMBER AND SUBSTANTIALLY CORRESPONDING IN SHAPE AND NOT GREATER IN SIZE, A HEADED FASTENING ELEMENT HAVING A SHANK WITH THE HEAD AT ONE END ENGAGING THE OTHER EDGE MEMBER AND THE SHANK EXTENDING THROUGH SAID ALIGNED OPENING WITH A PORTION EXTENDING BEYOND THE FLAT FACE OF SAID RING, SAID SHANK AND RING BEING ENGAGED TO RETAIN THE FORM MEMBERS AGAINST SHIFTING TRANSVERSELY OF THE AXIS OF THE ALIGNED OPENINGS, SAID EXTENDING PORTION OF THE SHANK HAVING A TRANSVERSE SLOT EXTENDING LONGITUDINALLY THEREOF FROM WITHIN THE HARDENED STEEL RING AND TERMINATING IN OUTWARDLY SPACED RELATION THERETO, AND A STEEL WEDGE MEMBER REMOVABLY MOUNTED IN SAID SLOT WITH AN INTERMEDIATE PORTION ENGAGED WITH THE FLAT FACE OF THE HARDENED STEEL RING AND SPACED END OF SAID SLOT TO DRAW THE EDGE MEMBERS INTO TIGHT FACE TO FACE RELATION IN RESPONSE TO DRIVING OF THE WEDGE INTO SAID SLOT, SAID WEDGE MEMBER BEING OF A LENGTH SUBSTANTIALLY GREATER THAN THE TRANSVERSE DIMENSION OF THE HARDENED STEEL RING AND HAVING A STRAIGHT LONGITUDINAL EDGE ENGAGING SAID FLAT FACE OF SAID RING AND SPACED FROM THE INNER FACE OF THE RESPECTIVE EDGE MEMBER, SAID CONNECTOR BEING CHARACTERIZED BY SAID WEDGE BEING RELEASED FROM FASTENING ENGAGEMENT WITH THE SHANK AND HARDENED STEEL RING BY STRIKING THE END OF THE SHANK ADJACENT SAID WEDGE MEMBER WITH A HAMMER BLOW TRANSVERSELY TO THE AXIS OF SAID SHANK.