Abstract: This invention relates to an apparatus for racking sheet materials characterized by an open-sided generally box-like rack having opposed sets of horizontally-disposed guiderails arranged in stacked relation one above the other to define tray tracks along the inside of the front and rear walls thereof. Slat-bottomed double-ended trays are mounted on the tracks for independent movement from a retracted position essentially centered within the rack to either one of two extended positions overhanging a side of the latter. Tray transfer means are provided for each tray accessible in the center of one end of the rack operative upon actuation, to drive a particular tray in either direction between its retracted and extended positions. A tool carriage is mounted on vertically-disposed tracks on the end of the rack with access to the tray transfer means for movement therealong into alignment with any of the tray transfer means.

Abstract: Apparatus for the storage of commodities which includes a plurality of shelves arranged to provide storage positions in the vertical and horizontal direction and a commodity carriage, containing a commodity to be stored, designed to move up and down and left and right along a front face of the shelves. The commodity carriage is positioned at a point facing a predetermined storage location in the shelves and apparatus "pushes-aside" the commodities contained in adjacent storage location so that thecommodity contained on the carriage can be stored without interference.

Abstract: An apparatus for stowing and conveying articles comprises at least one plurality of supporting and conveying units mutually interconnected at predetermined intervals, movable in continuously horizontal positions on an endless runway formed by fixed tracks for guiding the supporting members of said units, continuity of support by said tracks and by auxiliary fixed means associated therewith being provided for the supporting or conveying units through the whole runway, the means for interconnecting the units also serving to produce the control movements.