Knockdown steel shelving unit for corner fastening means therefor

Claim 1

IN A KNOCKDOWN SHELVING CONSTRUCTION COMPRISING AN UPRIGHT POST MEMBER HAVING AN APERTURE THROUGH A WALL PORTION THEREOF, A SHELF HAVING A HORIZONTAL PORTION AND A DEPENDING FLANGE MEMBER TERMINALLY ABUTTING SAID WALL PORTION AND HAVING A SIDE WITH AN APERTURE THEREIN, A CLAMP DEVICE INTERCONNECTING SAID MEMBERS INCLUDING A LEVER PIVOTALLY MOUNTED IN ONE OF SAID APERTURES ON ONE MEMBER AND CLOSELY FOLLOWING THE SHAPE OF SAID ONE MEMBER IN ITS CLOSED POSITION FOR MOVEMENT BETWEEN A CLOSED AND A RELEASED POSITION, AND AN ELONGATED ELEMENT PIVOTALLY ENGAGING SAID LEVER AT ONE END AND HAVING CATCH MEANS AT ITS OTHER END RELEASABLY ENGAGING IN THE OTHER OF SAID APERTURES TO DRAW SAID FLANGE ENDWISE TIGHTLY AGAINST GATES POST IN THE CLOSED POSITION OF SAID LEVER, SAID ELONGATED ELEMENT BEING NORMALLY RETRACTED TO DISPOSE SAID CATCH MEANS WITHIN SAID ONE MEMBER PERMITTING RELATIVE MOVEMENT OF THE FLANGE MEMBER VERTICALLY ALONG SAID POST MEMBER.