Abstract: A universal base for a bracket system comprises an open ended tubular member having a rectangular cross section. A T-shaped tongue projects at an angle from one end of the base back wall and the opposite or front wall is formed with at least two laterally spaced pairs of vertically spaced slots. With the tongue of one base engaged in the opening of a lipped channel member, the slots are simultaneously engageable by two shelf brackets or alternatively the upper open end of the base may accept a cabinet bracket that is laterally positionable over part of the width of the base.

Abstract: A dolly for maneuvering, lifting and transporting removable wall modules in the erection and disassembly of a modular wall system comprises an upwardly extending A-frame pivotally secured to a triangularly shaped wheeled base frame and having a vertically extendable grip arm with a lip at its end engageable in a groove in the module ceiling channel for moving the latter into and out of operative position against the ceiling; the lower edge of the A-frame has a horizontal lift member engageable in a longitudinal groove of the modular floor channel for lifting and supporting the module in cooperation with the grip arm. The A-frame is pivotally supported on the base frame about two axes so that the module when gripped by the grip arm end plate and the lift member may be lifted off the floor and tilted rearwardly to make an acute angle with the base frame for convenience and stability in transporting the module.

Abstract: A modular wall system comprises a plurality of wall modules in end to end relation, each module having a spring loaded ceiling channel engaging the ceiling and a floor channel frictionally or mechanically engaging the floor. The ceiling channel has a shallow upwardly opening longitudinally extending channel-shaped adapter plate on its top adapted to engage a strip secured to the underside of a ceiling tile support hanger for stabilizing and aligning the module. The ceiling and floor channels have sides formed with longitudinal grooves adapted to be engaged by a suitable dolly for contracting or expanding the ceiling channel away from or toward the ceiling to enable each module to be maneuvered into and out of position in the line of the wall.