Abstract: This is a desk top tray set comprising trays and connector-spacer members for connecting the trays in vertically stacked relationship two or more tiers high. Each tray has a versatility that makes it universally applicable either for individual use or for positioning anywhere in the vertical stack. That is to say, a given tray, when equipped with removeable and replaceable plugs for the upwardly facing bayonet ports thereof, can be used individually or as the topmost tray in a vertical stack. When the bayonet plugs are removed, however the tray can be used in the interior or at the bottom of the stack. Moreover the plugs, once removed can again be replaced, and the tray thus restored to the top of the stack or to individual use. The tray is also designed to receive connector bayonets plugged in from above or below, so that each tray can be used at the top, in the middle, or at the bottom of the stack.

Abstract: This invention is directed to facilities for storing food in a controlled atmosphere wherein the temperature is regulated and the relative humidity is regulated. An important element in achieving a controlled atmosphere for the storage of food is the storage building. If the storage building is, properly, designed and constructed so as to provide a vapor barrier and also to provide thermal insulation, the storing of the food is made easier for realizing a desirable stored product. With the combination of a vapor barrier and also thermal insulation, there is less possibility of condensation of moisture in the storage building.

Abstract: A wall-mounted structure includes a support which removably holds an inner decorative panel having displays on opposite sides. The inner panel is secured to the support by a mounting means which permits the reversal of the panel to expose either side. A frame is provided with a second mounting means to hold a series of outer decorative panels which can partially or totally conceal the inner panel from view. Each decorative panel is changeable and reversible.

Abstract: A formed sheet metal stud having a flange on the opposite side of the wall from that which is exposed to a fire, which flange is formed by a double thickness of the sheet metal which is loosely folded, leaving a finite space between the two thicknesses to function as a chimney, providing a cooling effect on portions of the stud adjacent the highest temperatures of the fire. Small holes are formed in the outer face of the loosely folded flange to permit cooler air from the unexposed side of the stud to enter the void within the loosely folded flange, where the air rises and cools the stud, and/or they permit heated air rising within the void to escape.

Abstract: Disclosed is a closing arrangement for large passages in a prestressed pressure vessel comprising a cover means for covering the opening of a passage in the prestressed pressure vessel, an annular structural part having an inner boundary surface surrounding the covering means at a distance and defining a space therebetween, a means for securing the annular structural part to the prestressed pressure vessel and a plurality of connecting elements disposed in the space between the annular structural part and the covering means in abutting relationship with the inner boundary surface of the annular structural part and the covering means.

Abstract: A two-part composite insulated masonry building block assembled as to both of its parts at the site of manufacture and transportable in assembled form to the construction site and including, as a first part, a block of concrete or other cementitious material having spaced outer and opposite side walls together with a trio of spaced transverse webs connecting between the side walls and defining a pair of equal cells or cavities, with at least two of the webs being provided with tapered air gaps or thermal breaks extending upwardly from the lower horizontal plane of the block, and as a second part, a longitudinally-extending insulative element of molded polystyrene or other suitable rigid foam material being complementarily configured with strategically-located tapered slots extending downwardly for the seating of the insulative element between and in general parallelism with the block side walls and into the tapered air gaps in interdigitating relationship and defining additionally an insulation capacity at ea

Abstract: A gate for an irrigation ditch includes a rectangular frame, in which a pair of gates are pivotally mounted on shafts for rotation around vertical axes at the sides of the frame; helical springs connected to the top ends of the shafts and to the frame for regulating the water pressure required to open the gates; and tensioning elements for changing the length and consequently the tension of the springs, so that the pressure required to open the gates can be adjusted.

Abstract: A locking post comprising a vertical post with two spaced horizontal plates attached to the bottom portion of the post. Each plate is reinforced and supported by a steel rod passing through the post and running parallel and beneath the plate. The upper plate is positioned above the lower plate and is disposed in a direction which is generally at right angles to the disposition of the lower plate. The post is set in a hole in the ground with the plates being disposed beneath the surface of the ground. When the assembled parts are covered with dirt, the crossed plates will prevent removal of the post.

Abstract: A building panel having opposite sides and parallel beveled edges defined respectively by facing sheets and by the parallel sides of the first and last trapezoidal corrugations of a longitudinally corrugated sheet sandwiched between the facing sheets, the longitudinally extending trapezoidal spaces between the corrugated sheet and the facing sheets being filled with urethane or like insulating foam which bonds the facing and corrugated sheets together and forms a strong monolithic section. The facing sheets and corrugations are preferably made of cardboard, and the facing sheets desirably have colored, patterned or textured surfaces. The panel herein is further characterized in that a reinforcing, weatherproofing, and protective skin of translucent or transparent plastic is applied over the sides and edges of the panel through which the colored, patterned, or textured surfaces of the facing sheets are visible.

Abstract: A method of making wood shingle sidewall panels by assembling a layup including a face layer of high-grade tapered wood shingles with their longitudinal edges in abutment, each such shingle having a rabbeted longitudinal edge, an intermediate layer of veneer and a backing layer of wood shingles tapered opposite to the taper of the face wood shingles, and bonding the shingle layers to the opposite sides of the veneer, respectively. The face layer of sidewall panel shingles having rabbeted edges simulates the appearance of shingles individually applied to a wall.

Abstract: A light weight hollow run-off trough which can be secured to a down spout while being substantially supported by the ground is disclosed. The trough includes a depression adjacent its rear end for accommodating the distal end of the down spout. The trough body is formed of a resiliently deformable molded plastic and the rear wall thereof includes a separable portion having the shape of an inverted T. In use, the distal end of the down spout is inserted into the depression and the inverted T shaped portion is bent by 180.degree., and the arms thereof are wrapped around a vertical portion of the down spout, and tied.

Abstract: A bleacher structure for spectators comprising a system of interconnected upright posts, cross beams, and diagonal stiffening members with channel beam seats and channel beam footrests locked into the structure by means of hook members on the channel beams cooperating with slots in the upright posts and the cross beams.

Abstract: An apparatus and method for joining panel members into walls or dividers is provided which allow thermal expansion of the panel members to be absorbed by the joints. The panel construction includes turned down edges having grooves on the inside faces of the edges. Each edge is sized to fit side-by-side in a channel with the edge of an adjoining panel and with their grooves over ridges on the inner walls of the sides of the channel. An insert member having protrusions on its sides is wedged between the side-by-side edges for maintaining the grooves over the ridges while allowing pivotal movement of the edges around the ridges.

Abstract: A swimming pool has a sidewall and a flexible liner, the sidewall defining an outwardly extending bay having opposed sidewalls between which a stair assembly is sealingly secured. The stair assembly is a molded structure having a continuous depending flange at the ends of the treads and risers and a hollow triangular stiffening rib extending longitudinally and generally centrally along the underside of each tread. A continuous coping embraces the upper edge of the pool sidewall, the upper edges of the opposed sidewalls and the upper edge of the top riser of the stair assembly. The opposed sidewalls of the bay are metal plates to which the depending flanges of the stair assembly are secured and those plates have edge flanges sealed to the edges of the flexible liner at the sides of the bay.

Abstract: A method and apparatus for cleaning openings in a borehole casing, slotted liner, screen or the like, cleaning subsurface earth formations and/or stimulating the flow of fluids through subsurface earth formations surrounding a borehole in which a plasma is generated adjacent the area to be treated by the gasification and ionization of a gasifiable and ionizable material, such as, water, petroleum or similar fluids and/or solids, such as, a consumable metal wire, thereby creating an intense shock wave which passes into or through the material being treated. The plasma region is created by any means adapted to gasify and ionize the gasifiable and ionizable material, such as, a high voltage, high current electrical discharge of short duration.

Abstract: A fire door comprising a core and edge banding, the principal ingredients of the core being expanded perlite, gypsum and cement, and including, as minor ingredients, an organic binder, and having a density not greater than about 35 lbs./cu. ft. The banding comprises composite stiles and rails, each formed of a strip of wood and a strip of a cast mixture of which the principal ingredient is gypsum and including a binder and preferably also including fibers, unexpanded vermiculite and clay.

Abstract: Foamed construction apparatus and method wherein the walls of existing structures are used as one side of a form and a second form is attached either to the outside or the inside of the existing wall and spaced therefrom with suitable spacers and then filled with an expanding foam so as to substantially improve the insulating properties of the structure as well as to change its internal and/or external appearance. The insulating properties of the foam substantially increase the efficiency of the structure and the technique results in new and improved external and internal appearance of the structure.

Abstract: A metal cross support is provided for use with a wooden truss structure of the type having a plurality of spaced wooden truss elements with a wooden stringer extending across at least one end of the truss elements and generally perpendicular thereto. A narrow and transversely extending channel is formed in each truss element so that the channels are in alignment with each other. The cross support comprises an elongated strip having a portion which is insertable into the aligned channel so that upon insertion, the metal strip is frictionally attached to the wooden truss elements. In addition, an overlapping portion at at least one end of the metal strip lies in a horizontal plane, abuts against and is attached to a corresponding horizontal surface.

Abstract: A storage silo includes a support structure and a disassemblable container mounted on the support structure with its longitudinal axis extending vertically. The container includes a plurality of neighboring sections which conically diverge in the downward direction and have upper and lower end portions which overlap one another in assembled condition of the container. The sections fit into one another in disassembled condition to form a transportation package; a discharge hopper of downwardly converging conical configuration is also accommodated, in inverted condition, in the transportation package, as is a protective railing which, in the assembled condition, is mounted on the top of the container. The lower end portions of the upper sections may fittingly surround, or may be fittingly received within, the upper end portions of the respective downwardly adjacent sections in the assembled condition, and these cooperating end portions are connected to one another by screws, bolts, or similar connectors.

Abstract: Induced hydraulic intragardient system for, and method of preventing flow migration of liquid leachate from, a secure landfill arrangement, which contemplatesa low permeability inner primary liner for confining liquid leachate containing waste material landfill and a low permeability outer secondary liner for separating the arrangement from the surrounding subsurface formation thereat, and an intermediate permeable piezometric pressure blanket separating the liners from each other,plus a supply mechanism for supplying sufficient control liquid, e.g.