Nesting units

Claim 1

A racking unit adapted for stacking engagement with an identical racking unit or with a particular non-identical racking unit, said racking unit comprising a substantially rectangular plane base, a first pair of posts, and a second pair of posts having respective mutually confronting faces, the arrangement and positioning of said posts permitting the vertical interengagement of said racking unit with another racking unit, said first pair of posts being attached one each of adjacent extreme corners of said base, said first pair of posts extending in a direction substantially perpendicular to the plane defined by said base, said second pair of posts being attached one each to the other two adjacent extreme corners of said base, said second pair of posts extending in a direction substantially parallel to said first pair of posts, the separation between said second pair of posts being substantially equal to the separation between said first pair of posts, first, second, and third connecting members each extending parallel to a side of said base, said first pair of posts being connected one each to a respective one each of said second pair of posts by means of said first and second connecting members and said second pair of posts being connected together by means of said third connecting member extending directly between the confronting faces of said second pair of posts, two lug members one each attached to respective posts of said first pair of posts, said lug members each including a first portion which has two ends and is secured at one end to a respective post of said first pair of posts and extends towards that post of said second pair of posts to which said post of said first pair of posts is connected by one of said first and second connecting members so that the other end of the lug member is spaced from that post of said first pair of posts to which said one end is secured, and a second portion which is secured to said other end of said first portion and extends towards said base, and spigot means fitted to the bottom of each post of said first and second sets of posts, said lug members being positioned to engage with their said second portions the open tops of the first pair of posts of another identical racking unit during the vertical nesting interengagement of said racking unit with said another racking unit, when said racking units are stored and said spigot means being adapted to engage the ends of corresponding posts of another identical racking unit when said racking unit and said identical racking unit are in a stacked configuration, and a pair of upwardly extending dowel means located on said third connecting member so as to engage the bottoms of the posts of a particular non-identical racking unit having a first pair of posts with separation identical to the separation between the first pair of posts of said racking unit and a second pair of posts with separation less than the separation between the second pair of posts of said racking unit, when said racking unit and said particular non-identical racking unit are stacked.