Package containers rack frame

A collapsible rack for slidably receiving traylike articles comprising:

• a framework having pairs of vertical column spaceable in a lateral direction,
• the columns of each pair of columns being fixedly spaced in the fore-and-aft position,
• horizontal structural elements extending between the columns of each pair of columns spaced in said fore-and-aft direction,
• said laterally spaced pairs of columns defining therebetween a space open on at least a front side of the foldable rack when said rack is in an uncollapsed condition,
• a plurality of traylike articles positioned horizontally between said horizontal structural elements extending between a pair of columns spaced in said fore-and-aft direction and another pair of columns spaced in said fore-and-aft direction whereby to maintain said rack is an uncollapsed condition;
• said columns being formed of relatively thin-walled tubular metal sheathed in a plastic resinous material,
• recessed flanges integral in said plastic resinous material of each column on the side of the resinous material adjacent said space extending toward the other column of the respective pairs columns spaced in said fore-and-aft direction,
• a plurality of parallel horizontally disposed guide means mounted in said recessed flanges between each of said pair of pre-and-aft spaced columns,
• said guide means being detailed to support said traylike articles,
• slidable mounting means positioned on each of said horizontal structural elements,
• a movable vertical column mounted to each of said slidable mounting means,
• a plurality of horizontal members,
• said plurality of horizontal members being connected between each of said one column of said pair of columns in an aft position and said vertical column,
• two of said horizontal members defining an x-like configuration,
• whereby said spaced vertical column may be selectively collapsed or uncoilapsed.