Abstract: A changeable wall structure includes a frame which removably holds a plurality of inner decorative panels having displays on one or both sides. A combination of a shelf, a shelf extension, and a support are selectively secured to the frame by mounting brackets. These brackets include upper, lower and intermediate support brackets which permit the support of panels in upper and lower positions, in intermediate positions, and in rearward positions and forward positions. Decorative panels are employed, and the forward or outer panels can partially or totally conceal one or more of the inner panels from view. Each decorative panel is preferably changeable and reversible.

Abstract: A bridging system (50) for steel joists (56) comprises fasteners (52) secured to the chords (54) of the steels joists (56) by welding. Bridging members (60) comprise the lengths of angle iron having fastener receiving holes (62) formed therein at equally spaced intervals. Selected fastener receiving holes (62) of the bridging members (60) are engaged with the fasteners (52), and the bridging members (60) are mechanically retained in engagement with the fasteners (52). The fasteners (52) may comprise steel dowels, in which case the bridging members (60) are retained by retaining rings (74), or threaded members, in which case the bridging members (60) are retained by nuts (76) threadedly engaged with the fasteners (52).

Abstract: An operable wall system which is especially desirable for use with large and/or heavy wall panels can be constructed so that each panel in the system is supported from a track structure by two separate trolleys. The track structure includes a terminal section having two parallel end sections joined to the main portion of the track structure through a junction. This junction is provided with cams which cooperate with differently oriented flange wheels on successive trolleys so that the panels can be moved between a position in which they are aligned with one another beneath the main portion of the track structure and a position in which they are suspended from the end sections and are located in side by side relationship.

Abstract: Building insulation for installation between joists above a crawl space, basement or garage area comprising a layer of insulating material having a vapor barrier layer on the top thereof and a flexible reticulated member at the bottom thereof, such member having fastening flanges thereon extending downwardly and adapted to be secured to the sides of the joists, whereby the reticulated member supports the insulating material and vapor barrier layer.

Abstract: In an extensible arm having a reticular lattice structure with a polygonal cross-section, particularly for space modules or vehicles, each longitudinal side of the lattice structure includes first and second kinematic pantograph chains each constituted by a plurality of rods articulated together so as to define a series of aligned X-shaped elements. The rods of the second kinematic chain are shorter than the rods of the first kinematic chain, and the articulations between the X-shaped elements of the second kinematic chain located on one side of the latter coincide with the articulations between the X-shaped elements of the first kinematic chain located on the same side.

Abstract: An inexpensive, modular, partition system is provided by panels which include a generally rectangular body and connector members on opposed sides of the body and integral therewith. Each connector member includes female and male elements joined together by a stop element which is generally perpendicular to the body. The panels may be connected to one another to form a wall by either an abutting type or overlapping type connection. In the abutting type connection, one connector member of one panel interlocks with a connector member of the other panel and the female and male elements come into mating engagement with each other, with the stop elements of each member abutting each other. In the overlapping type connection, the ends of adjacent panels overlap each other and the male elements of each connector member are secured to the body of an opposing panel.

Abstract: A mimic panel is formed by a series of like aluminum strip members. The strip members B are slid through the strip members A and rotated 90.degree. into the position shown in the drawing. Some of the intersections of the members A and B are spot welded together. Mimic tiles 18 are then placed in the structure and held in position by spring clips 20. There are 1600 mimic tiles per square meter.

Abstract: H-splines and electrical raceways useful in an insulation system for the inner side of an exterior wall are substantially identical to those in a partition wall constructed to extend from said exterior wall. Insulation panels in the insulation system and in the partition wall may also be substantially identical.

Abstract: Flexible selective energy control sheet construction formed of a sheet of substantially transparent polymer thin film plastic material having first and second surfaces. A substantially transparent continuous adhesion promoting layer is adherent to the second surface of the sheet. A substantially transparent metal layer is adherent to the adhesion promoting layer and a protective layer is adherent to the metal layer. The metal layer is selected from the materials of copper and silver.

Abstract: An extendible structure of the invention is constructed by connecting the radially projecting legs of the spacer with differing longerons through the joints, and then fastening one joint with adjacent another joint at a diagonally opposed position with a bridle. In the extended state of the structure, the spacers are within a plane which is substantially perpendicular to the direction of extension of the structure and the bridles are extended in the diagonal lines between the adjacent joints to thereby form the longerons in a mast-shaped three-dimensional structure, while, in the collapsed state of the structure, the longerons are collapsed in a loop form and the spacers are laid one upon another inside the loop formed by the longerons to thereby produce a cylindrical form in its outer appearance.

Abstract: A generally U-shaped channel member is positioned on top of the top surface of a plurality of foam plastic blocks in a horizontal wall segment, and vertically aligned concrete confining openings are formed through both the channel member and the plastic blocks. Concrete or the like is poured into the U-shaped channel and is funneled therefrom into the vertical openings. Once the concrete sets as a rigid supporting structure, the U-shaped channel is permanently retained in the wall structure. The U-shaped channel member is employed for attaching means to the exterior of the completed wall structure. Additional horizontal segments of the wall structure are formed by placing another horizontal layer of plastic blocks and a U-shaped channel member on top of the previously completed horizontal segment.

Abstract: This disclosure relates to a clip for securing together adjacent collapsible, expandable, self-locking, self-supporting structures which include a plurality of pairs of crossed rod elements pivotally joined in scissored fashion to each other and to hubs having openings therein, the structures having at least one hub of each section adjacent each other, and the clip having at least two stems with each stem being interlockingly received in an associated opening of the adjacent hubs to thereby secure the structures to each other in any one of a plurality of different configurations.

Abstract: The present invention relates to a stack or a vertical pipe for the flow of gas, said stack or pipe comprising a suspension mast defining a vertical axis; at least one supple surface, open downwardly and upwardly, and symmetrical with respect to this axis; substantially horizontal, rigid hoops, viz. an upper hoop and a lower hoop respectively fast with the upper and lower periphery of the surface, each hoop being symmetrical with respect to said axis; supple bearing ties suspending the upper hoop from the mast; and stays connecting the lower hoop to a fixed lower point of the mast or the ground to stretch the supple surface in a vertical direction. The invention finds application in the entire production or extension of stacks or pipes such as atmospheric cooling towers.

Abstract: A rollable grating includes tubes of anodized aluminum alloy, assembled through the agency of fasteners, each of which includes two portions, surrounding each bend of one of the tubes to be assembled. The two fastener portions are connected to each other via a connection bar.

Abstract: A skylight structure in which a plastic dome has a peripheral edge flange bonded by a bonding medium to an overlapping flange of a plastic mounting skirt in a manner such that the bonding medium encompasses the outer edge of the peripheral flange and extends between the confronting surfaces of the overlapping flanges to an inner locus edge spaced from the inner edge of the skirt flange, and wherein a sealing strip coextensive with said locus edge is retained between the overlapping flanges by an inner edge portion of the skirt flange. Provision is made for securing the mounting skirt to a roof curb structure with a continuous sealing member being interposed between the curb and an under surface of the peripheral flange. In a modified form two domes have peripheral flanges, bonded together and to a single skirt flange, and with a continuous sealing strip being interposed therebetween.

Abstract: The skylight may be of the domed-type or flat-type and of single or double glass (acrylic or other transparent or translucent plastic) construction. The skylight fits within an opening in a roof or the like and has a peripheral base that may be constructed of a metal material such as aluminum, and which is fixed to the roof construction about the opening. The base comprises inner and outer base frames separated by a thermal break, a peripheral curb frame disposed over the base, and a retainer for securing the skylight dome over the curb fame. In one embodiment the thermal break is formed by a separate gasket preferably in the form of a pre-molded butyl tape with a neoprene shim. The curb frame is sealed to the base by means of a hollow second gasket preferably secured to the base but separate from the butyl gasket.

Abstract: A support member for batt or sheet insulation in which straps are placed at intervals in the void to be insulated. Prongs extend from the straps at substantially right angles. The prongs are pushed into the insulation to hold the insulation in the void.

Abstract: A prestressed cable anchorage block having at least one orifice bore extending from an anchorage point of the cable to the outlet of the block. The at least one orifice bore has a longitudinally increasing cross section beginning at the point of anchorage until the outlet of the block.

Abstract: A novel panel and panel assembly for use in building-type structures, together with panel forming apparatus are disclosed which are especially suitable for using portable, point-of-use, continuously operable, roll-forming techniques. The panel is characterized by upwardly diverging inclined sidewall portions (26, 27), wing portions (28, 29) of substantial lateral extent in relation to an intermediate wall portion that forms the bottom thereof, and centered edge fastening structure (31, 32). This panel provides a greater panel width per sheet stock width, ease of assembly, spacing and tracking surfaces for continuous edge seaming, and balanced strength with respect to loading. The panel assembly has continuous seam structure (54) with abutting inclined side sections (41, 47) and centered interlocking lateral flange portions (46, 53).

Abstract: Method and apparatus for constructing a surface from a plurality of similar polygonal tiles wherein the tile has affixed to 50% of its sides one or more spacer members, each spacer member having a flat base and a rectangular flange bisecting the base, said spacer members being securely affixed to the rear face of the tile or to the flat base of an indentation in said base with the flange of the spacer member resting against the side of the tile. The tile is laid onto a bed of wet cement with a projecting portion of the spacer member lying on the surface of the bed. A second tile is laid onto the bed so that the rear face of the tile will rest on the base of a spacer member affixed to the first tile with one side of the second tile resting against the flange of the said spacer member. Successive tiles are then laid on said bed with their rear faces resting upon the base of a spacer member of an adjacent tile and the side of the tile resting against the flange of the spacer member.