Rack support system

Claim 1

IN A STRUCTURE PROVIDING A CHAMBER HAVING SIDE WALLS AND A FRONT OPENING, WHEREIN THERE IS AN ARTICLE-SUPPORTING RACK FORMED OF WIRE, A SUPPORT SYSTEM COMPRISING: (A) A PAIR OF ELONGATED TRACK MEMBERS OF UNIFORM CROSS SECTION; (B) MEANS SECURED TO SAID WALLS AND RESPECTIVELY SUPPORTING SAID TRACK MEMBERS FOR HORIZONTAL MOVEMENT ALONG THEIR AXES BETWEEN POSITIONS ENTIRELY WITHIN SAID CHAMBER TO POSITIONS PARTLY OUTSIDE SAID CHAMBER; (C) TWO HORIZONTALLY SPACED RACK-SUPPORTING MEMBERS SECURED TO EACH OF SAID TRACK MEMBERS; (D) WIRE MEANS RESPECTIVELY ASSOCIATED WITH EACH RACKSUPPORTING MEMBER, EACH SAID WIRE MEANS INCLUDING A PAIR OF WIRES EACH SECURED AT ITS ENDS TO SAID RACK, THE TWO WIRES OF EACH SAID PAIR EXTENDING HORIZONTALLY IN VERTICALLY SPACED RELATION TO EACH OTHER INTERMEDIATE THEIR ENDS TO FORM A HORIZONTAL SLOT; (E) EACH OF SAID RACK-SUPPORTING MEMBERS BEING POSITIONED WITHIN ONE OF SAID SLOTS TO PROVIDE FOR HORIZONTAL MOVEMENT OF SAID RACK RELATIVE TO SAID TRACK MEMBERS, SAID WIRES BEING FORMED TO STOP OUTWARD MOVEMENT OF SAID RACK AFTER SAID RACK EXTENDS SUBSTANTIALLY ENTIRELY OUT OF SAID CHAMBER AND TO STOP INWARD MOVEMENT OF SAID RACK WHEN IT IS POSITIONED ON SAID TRACK MEMBERS SO AS TO BE ENTIRELY WITHIN SAID CHAMBER.