Framework structures

Claim 1

A FRAMEWORK STRUCTURE BUILT UP FROM PERFORATED ELEMENTS BOLTED TOGETHER, AND INCLUDING A SHELF MEMBER CONSISTING OF A RECTANGULAR SHEET HAVING AT EACH EDGE A TURNED-DOWN FLANGE PROVIDED AT EACH END WITH TWO ALIGNED SLOTS, AN ANGLE STRIP AT EACH CORNER OF THE SHAFT MEMBER DISPOSED WITH ITS LENGTH AT RIGHT ANGLES TO THE SHAFT SURFACE, SAID ANGLE STRIP HAVING AN L-SHAPED CROSS-SECTION AND COMPRISING TWO WEBS, EACH OF WHICH EXTENDS ACROSS ONE OF SAID FLANGES AND LIES IN A PLANE PARALLEL THERETO WITH A PORTION OF EACH WEB REGISTERING WITH AN END PORTION OF THE SHELF FLANGE TO WHICH IT IS PARALLEL, EACH WEB BEING PORVIDED WITH A ROW OF SLOTS WHICH EXTENDS LONGITUDINALLY THEREALONG, A GENERALLY TRIANGULAR ANCHOR PLATE SANDWICHED BETWEEN EACH SHELF FLANGE AND THE ANGLE STRIP PORTION REGISTERING THEREWITH, EACH ANCHOR PLATE HAVING THREE BOLT HOLES SPACED AT THE CORNERS OF A RIGHT-ANGLED TRIANGLE AND REGISTERING WITH SLOTS IN AT LEAST ONE OF SAID ANGLE STRIP WEB AND SHELF MEMBER FLANGE, AND THREE BOLTS PASSING RESPECTIVELY THROUGH THE THREE BOLT HOLES IN EACH ANCHOR PLATE AND ALSO THROUGH THE SLOTS REGISTERING THEREWITH FOR BOLTING TOGETHER THE SHELF MEMBER, THE ANGLE STRIPS AND THE ANCHOR PLATE.