Collapsible shelvings

Claim 1

A COLLAPSIBLE SHELVING COMPRISING IN COMBINATION A PLURALITY OF VERTICAL UPRIGHTS ADAPTED TO BE DISPOSED BY PAIRS, ONE AT THE FRONT AND ANOTHER AT THE BACK OF THE SHELVING, EACH UPRIGHT CONSISTING OF A SECTION OF SUBSTANTIALLY U-SHAPED CROSS-SECTIONAL CONFIGURATION AND HAVING THEREFORE TWO SIDE ARMS AND AN INTERMEDIATE PORTION ADAPTED TO BE DISPOSED ON THE EXTERIOR OF THE SHELVING; A SERIES OF HORIZONTAL BRACING MEMBERS ADAPTED TO BE DISPOSED TRANSVERSELY BEWTWEEN TWO UPRIGHTS OF A SAME PAIR, THE END PORTIONS OF SAID BRACING MEMBERS BEING ADAPTED TO BE ENGAGED IN THE CHANNEL OF SAID VERTICAL UPRIGHTS; HOOKING PROJECTIONSD FORMED OPN THE END PORTIONS OF SAID HORIZONTAL BRACING MEMBERS; THE SIDE ARMS OF THE RESPECTIVE SECTION CONSTITUTING EACH VERTICAL UPRIGHT BEING BENT INWARD ON THEMSELVES TO PROVIDE A PAIR OF PARALLEL FLANGES BOUNDING THE INNER CHANNEL OF THE RESPECTIVE SECTION, SAID FLANGES BEING FORMED WITH RESPECTIVE SECTION, SAID FLANGES BEING FORMED WITH RESPECTIVE RECESSES SAID END PORTIONS OF SAID HORIZONTAL BRACING MEMBERS AND ADAPTED TO RECEIVE SAID HOOKING PROJECTIONS WHEREBY SAID BRACING MEMBERS MAY BEAR UPON SAID UPRIGHTS; A SERIES OF TRAYS ADAPTED TO CONSTITUTE SHELVES, COMPLEMENTARY HOOKING MEANS FORMED ON SAID HORIZONTAL BRACING MEMBERS AND ON THE ENDS OF SAID TRAYS TO PERMIT THE HORIZONTAL MOUNTING OF SAID TRAWYS BY ENGAGING THE TRAY ENDS ON SAID BRACING MEMBERS.