Frame for suspension of data binders

Claim 1

An invertible rack structure comprising upstanding, spaced-apart, substantially square end walls, a pair of laterally spaced-apart hanger rails extending between and secured at their ends to the facing sides of said end walls at locations thereof closely adjacent the relatively upper-outer corners of said end walls and in a horizontal plane which is parallel to the top and bottom edges of said end walls, a single hanger rail extending between and secured at its ends to said facing sides of the end walls at locations thereof closely adjacent the relatively bottom edge of said end walls and centrally with respect to the aforesaid pair of hanger rails, said hanger rails each having L-section and being provided with a flange on the free edge of each leg of the L which extends towards and is substantially parallel to the other leg, thereby defining open-sided tracks, the open sides of the tracks of the relatively upper pair of hanger rails facing one another and the open side of the track provided by the single, centrally disposed hanger rail facing the relatively bottom edges of said end walls, the construction and arrangement being such that at least one data binder provided with end hooks may be hung from said pair of laterally spaced-apart hanger rails and that, upon inversion of the rack structure, at least one data binder may be hung from one of its said hooks in angular position from said single, centrally disposed hanger rail.