Open shelf filing structures

Claim 1

IN A FILING UNIT OF THE CLASS DESCRIBED, (A) A PAIR OF SPACED VERTICAL UPRIGHT SUPPORT MEMBERS, (B) A SHELF UNIT DISPOSED BETWEEN SAID UPRIGHT MEMBERS, (C) SAID SHELF INCLUDING A SHELF PANEL AND A REAR PANEL EXTENDING SUBSTANTIALLY VERTICALLY AND AT RIGHT ANGLES TO THE SHELF PANEL, (D) SPACED BRACKET MEANS CONNECTED TO THE SPACED OPPOSITE ENDS OF SAID SHELF UNIT TO MOUNT SAID SHELF ON SAID SPACED UPRIGHT MEMBERS, (E) SAID BRACKET MEANS INCLUDING MEANS MOUNTED ON SAID UPRIGHT MEMBERS TO SUPPORT SAID SHELF FOR PIVOTAL MOVEMENT BETWEEN A FIRST PORTION WHEREIN SAID SHELF PANEL IS ARRANGED IN AN IMAGINARY PLANE INTERSECTING SAID UPRIGHT MEMBERS AT RIGHT ANGLES AND A SECOND POSITION ARRANGED IN A SECOND IMAGINARY PLANE INCLINED UPWARDLY FROM SAID UPRIGHT MEMBERS, AND (F) CLIP MEANS HAVING FIRST PORTION DETACHABLY SECURED TO THE SPACED SIDE EDGES OF SAID PANEL AND SECOND PORTIONS IN ENGAGEMENT WITH SAID UPRIGHT MEMBERS TO MAINTAIN SAID SHELF UNIT IN SAID INCLINED SECOND POSITION.