Storage rack

Claim 1

IN A KNOCK-DOWN STORAGE RACK CONSTRUCTION, A POST COMPRISING A PAIR OF PARALLEL FLAT FLANGES CONNECTED BY A WEB AT RIGHT ANGLES THERETO, SAID WEB BEING FLAT EXCEPT FOR VERTICALLY SPACED SECTIONS WHICH ARE INDENTED INWARDLY, EACH OF SAID VERTICALLY SPACED SECTIONS HAVING A CENTRAL PORTION PARALLEL TO THE FLAT WEB PORTIONS AND INCLINED PORTIONS CONNECTING SAID CENTRAL PORTION WITH THE MAIN FLAT PORTION OF SAID WEB, A CROSS RAIL HAVING A CONNECTING MEMBER AT ONE END THEREOF, SAID CONNECTING MEMBER HAVING A FIRST FLAT SECTION ENGAGEABLE WITH ONE OF SAID FLANGES, AND A SECOND SECTION HAVING A SHAPE COMPLEMENTTARY TO THE ADJACENT FLAT SIDE SECTION OF THE POST WEB AND THE INCLINED PORTIONS CONTIGUOUS THEREWITH, DOWNWARDLY EXTENDING TEETH ON SAID SECOND CONNECTING MEMBER SECTION, AND UPWARDLY OPEN RECESSES FORMED BETWEEN THE INDENTED POST WEB SECTIONS AND THE FLAT SECTIONS BETWEEN THEM, SAID TEETH BEING INSERTABLE IN SAID RECESSES, THE SPACES BETWEEN SAID TEETH BEING GREATER THAN THE WIDTH OF THE FLAT WEB SECTIONS, WHEREBY SAID TEETH MAY ENTER SAID RECESSES.