Abstract: A joint structure for connecting together shelves in a modular shelf assembly includes first and second, coplanar, abutting shelves. A hole is formed through the shelves with one-half of the hole being formed in each shelf so as to complete the hole when the shelves are abutting each other. The shelves are sandwiched between first and second vertically extending supports which are connected together by fastening means extending through the hole in the shelves. Formed in the upper side of the shelves is an annular recess concentric with the hole and having an inverted cup-shaped bottom surface. An annular boss is formed on the end of the upper support and includes a cup-shaped end surface sized to fit within the recess.

Abstract: A spectator bleacher structure assembled from extruded metal sections including base, end support, tread members and posts. The end support members interconnect the posts and are bridged by the tread members. The tread members have reinforcing channel flanges depending therefrom with snap-in prongs inserted into slots formed in the end support members.

Abstract: A modular dock system comprising one or more dock panels adapted to be interconnected into a pier, each of said panels comprising a plurality of elongated extruded aluminum panel members having a flat upper wall, a pair of side walls having flanges along the lower edges and a central rib structure having lower flanges parallel of the flanges on the side wall, a pair of aluminum cross-members at opposite ends of the panel members have channel shaped cross-section and a web secured to the flanges of said panel members and a pair of downwardly extending side flanges, one of said cross-members spaced inwardly, parallel of the adjacent ends of the panel members and the other of said cross-members having an outside flange spaced outwardly parallel of the opposite adjacent ends of the panel members thereof and a thin sheet of skid resistant plastic material adhesively secured to the upper surface on the upper wall of said panel members.

Abstract: A gusset for assembling a first shelf and an identical transverse shelf in a corner arrangement without using a support column at the corner of the transverse shelf remote from the end edge of said first shelf. Said gusset comprises a lower portion having support surfaces abutting surface portions of a longitudinal rim flange of the first shelf and supports the lower surface of said shelf, and an upper portion having support surfaces abutting other surface portions of said longitudinal rim flange and resting on the upper surface of the shelf. When the upper and lower portions are clamped together by a screw the two assembled portions form recesses adapted to receive and clamp the free end of one of the longitudinal rim flanges of said transverse shelf.

Abstract: The invention relates to a tubular type of display rack assembly having tubular support members joined by coupling means. The coupling means includes units thereof which have two or more tubular members rigidly attached together in parallel relation to each other. Each such coupling unit facilitates the joining of a plurality of support members at any juncture to facilitate great flexibility in design possibilities for a display rack assembly.

Abstract: Shelving stacks for a library or the like include lightweight pre-assembled free-standing modules which can be assembled as desired at the site. The modules are secured in assembly by rectangular top and bottom connecting frames and spaced by the frames so that the vertical frame members of the modules support slidable shelves within the modules and between the modules. The slidable shelves have a length greater than the depth of the modules. Rear wall ties and side frame ties are easily connected at the site to frame in an enclosure for the overhanging shelves and provide additional support for the modules as well as form an integrated assembly of the modules. The ties are provided in various lengths so that the shelving assembly can be arranged to provide the desired aisles and range pattern to fit the building floor plan.

Abstract: A skeleton structure for a free standing wall type or a gondola type fixture assembly, comprising modular base units secured successively to each other as a base structure by uprights of framing for selectable superstructure. A modular primary base unit, of generally hollow rectangular plan form, fabricated with inward top and bottom flanges from sheet-metal shallow channel stock, with the channel vertical web providing panel-like unit sides, has like vertical half-sockets of rectangular cross-section located on respective central webs of two opposite sides, with the top flange notched above each half-socket, the half-sockets being located centrally of the base sides for island fixtures or at back corners of half-base units for wall type fixtures.

Abstract: Each work unit includes a main table, for supporting a typewriter or a bookkeeping machine, and a side table extending laterally from the main table. Each table has a frame, and the frames of the two tables of each unit are disengageably interconnected. The main table has a pair of longer sides and a pair of shorter sides, and the associated side table is disengageably connected to one shorter side of the associated main table, with the main tables extending alternately to the right and to the left from the chain of work units. The side tables have their shorter edges interconnected with each other to form the work unit chain. The table tops may be adjustably mounted on their supporting frames so as to be adjustable in height or tiltable, and auxiliary shelves may be provided beneath the side tables. Additionally, each side table may support a box-shaped attachment to form a storage recess or the like.

Abstract: A portable stage having plural separable stage units with means for holding adjacent stage units in fixed relation and at the same or different heights, including a pair of elongate grooved members associated one with each stage unit and with clamp mechanism positionable within the grooves of both of said members for imparting rigidity to the adjacent stage units and for holding said stage units locked to each other.

Abstract: An alignment structure for end to end positioned multichanneled seats and footboards such as may be used for seating stadium stands. Channel shaped inserts positioned in laterally spaced front and rear channels of two end to end seat sections (or footboards) span the joint between the seat sections and extend end wise into each to maintain end to end alignment between the seat sections. Each channel shaped insert is anchored in one or the other of the end to end seat sections and permits expansion and contraction displacement movement between the seat sections.

Abstract: Modular furniture elements concave can be assembled to form an article of furniture, such as, armchairs, divans, and beds, consist of elements which, in plan, have two or three different but interrelated shapes. In plan, the different shapes are all based on a circle having a radius R. Each element of a first set of elements has a shape, in plan, defined by a convex semi-circular side of radius R and two converging cooncave sides extending from opposite ends of the convex side and merging together at a blunt edge. Each concave side is equal to one quarter of the circumference of a circle of radius R. Each element of a second set has a shape in plan which is defined by two interconnecting convex sides, each being equal to one quarter of the circumference of a circle of radius R. Each element of a third set has a shape in plan which is defined by a convex side equal to three-quarters the circumference of a circle of radius R and a concave side of one quarter the circumference of such a circle.