Shelving structure

Claim 1

A SHELVING CONSTRUCTION COMPRISING AN UPSTANDING ENCLOSING BACK MEMBER, AN UPSTANDING ENCLOSING SIDE MEMBER DISPOSED AT EACH OF THE OPPOSITE ENDS OF SAID BACK MEMBER, SAID SIDE MEMBERS EXTENDING IN THE SAME DIRECTION FROM SAID BACK MEMBER AND SUBSTANTIALLY PARALLEL TO EACH OTHER, SAID BACK MEMBER HAVING AT LEAST ONE ELONGATED OPENING THEREIN ADJACENT TO EACH SIDE EDGE THEREOF, AT LEAST ONE TONGUE INTEGRAL ON EACH OF SAID SIDE MEMBERS, SAID TONGUES BEING DISPOSED IN SAID OPENINGS FOR INTERCONNECTING SAID BACK MEMBER AND SAID SIDE MEMBERS, SAID TONGUES EACH INCLUDING ABUTTING MEANS ENGAGING SAID BACK MEMBER FOR PREVENTING SEPARATION BETWEEN SAID SIDE MEMBERS AND SAID BACK MEMBERS IN A DIRECTION PERPENDICULAR TO SAID BACK MEMBER, A SHELF MEMBER EXTENDING BETWEEN SAID SIDE MEMBERS AND HAVING DOWNTURNED SIDE FLANGES THEREON, AND AT LEAST ONE TANG INTEGRAL ON EACH OF SAID SIDE MEMBERS INTERMEDIATE THE VERTICAL EDGES THEREOF AND EXTENDING OUTWARDLY THEREFROM TOWARD THE OTHER OF SAID SIDE MEMBERS, SAID DOWNTURNED SIDE FLANGES EACH HAVING A SLOT IN EACH END THEREOF AND RECEIVING ONE OF SAID TANGS THEREIN FOR SUPPORTING SAID SHELF MEMBER ON SAID SIDE MEMBERS AND FOR PREVENTING MOVEMENT OF SAID SIDE MEMBERS AWAY FROM EACH OTHER AND FOR FIXING THE ANGULAR RELATION BETWEEN SAID BACK MEMBER AND SAID SIDE MEMBERS WHEREBY SAID INTEGRAL TONGUES AND OPENINGS AND SAID INTEGRAL TANGS AND SLOTS SERVE RIGIDLY TO INTERCONNECT SAID BACK MEMBER AND SAID SIDE MEMBERS AND SAID SHELF MEMBER AND SERVE FIRMLY TO MOUNT SAID SHELF MEMBER ON SAID SIDE MEMBERS ALL WITHOUT THE USE OF ADDITIONAL DETACHABLE FASTENERS AND THE LIKE.