Abstract: A child's playhouse, or the like, particularly designed and constructed for being folded into a compact storage position when not in use and readily expandable to a complete playhouse type structure when in use. The structure may be permanently mounted on a wall, or the like, in such a manner that when the apparatus is in the storage position, the entire structure is unobstructive and may be either a decorative feature for the room wherein the apparatus is located, or may be a useful object therein, such as a chalk board, or the like.

Abstract: A movable partition construction which employs a unique overlap joint feature and means for erecting the individual panels in place to obtain a movable partition which has at least a one hour fire rating to thereby provide fire resistive partition wall construction, which is easily erectable and thereafter demountable should the partitioning or removal be desired. The panels are prefabricated on the factory site with a variety of exterior surfaces and are shipped to the building or job site where they are easily positionable into partition wall-forming members permitting the erection of partition walls in relatively short periods of time compared to existing prior art expedients. The resultant wall is fire-resistive and aesthetic in appearance.

Abstract: A mechanically built cover for an underground pit which accommodates one or more hunters, and gives maximum freedom of movement and firearm safety. It is preferably used by duck and goose hunters. The cover is built for instant opening, allowing time for the hunters to get their birds within shooting range. This cover will cut down on injured birds which leave the area to die. A designed safety feature of this pit cover is that one man can pull the cord which opens the cover instantly allowing other hunters in the pit to have complete control of their firearms. The pit cover may be camouflaged with whatever is in the hunting area such as corn stalks or any other natural foliages.

Abstract: A tub surround includes first and second identical corner sections and first, second and third identical panel portions. The tub surround is assembled by positioning a first panel between the two corner sections thereby defining one wall. The remaining panel sections are joined with each of the corner portions to define second and third walls. Each corner section includes first and second legs extending at right angles from each other. The ends of the legs extending from the corner sections lie on a plane parallel to and separated from the plane of each side thereby defining a joint behind which the edges of the panels may be positioned. The corner sections further include shelves extending between the legs of the corner sections.

Abstract: Disclosed is a channel shaped building panel especially adapted for installation on the underside of a roofing framework. The panel has opposed upstanding webs, one of which is provided with outwardly oriented generally L-shaped female locking and mounting means, and the other of which is provided with an inwardly oriented male locking means, both locking means terminating in detent ribs. At the juncture of the female locking means with its web, an integral inwardly oriented scabbard is formed, and a complementary outwardly oriented integral blade is formed at the juncture of the male locking member with its web. Upon upward insertion of the male locking member into the female locking member, the detent ribs interact in snap fashion, and the blade seats in the scabbard. The female locking and mounting member provides a surface for attachment of a fastener to the roofing framework.

Abstract: In a foundation wall for a furnace, a fastening element is provided for securing a refractory lining on the foundation wall. The fastening assembly consists of a first part and a second part. The first part is wholly disposed within the foundation wall and a second part is secured to the first part and projects outwardly from the foundation wall. The second part is detachably mounted on the first part and includes a base plate and an anchoring element which can be affixed to or releasably secured to the base plate.

Abstract: A relocatable wall mounting system is disclosed making use of a half-clip which, when mounted adjacent to a like half-clip at the abutting edges of wallboard panels, forms a spring clip attachment for engaging a slot in a support member to attach the panels to the support member. The half-clip has: a first shoulder section adaptable to be driven into the end of the wallboard panel; a base section extending from the shoulder section; a second shoulder section connected to the base section and extending in the direction of the end to be driven into the panel; and a curved spring arm extending outwardly and curving arcuately in the direction of the end to be driven into the panel.

Abstract: A wall vent preferably for use in a high-rise building is releasably opened for venting a fire in the building. The vent comprises a frame, a window or venting panel that is pivotally supported on one of its sides, means for biasing the venting panel to an open position and latch means for maintaining the panel in a closed position. The latch means may be either manually or electrically released or released upon detection of heat or smoke, and may be released either at the panel or remotely. Each wall vent is also preferably releasable to an open position from a story of the building therebelow.

Abstract: An interlocking siding or roofing strip or slat assembly for covering the surface of a building which may be susceptible of being crushed or deformed by the application of excessive force to a fastening element such as a nail. The slat assembly includes a fastening tab, a panel, an anchoring configuration intermediate the panel and the fastening tab and a hook-like configuration integral with the bottom of the panel for operatively engaging the anchoring configuration of a previously-installed slat assembly for interlocking them one above the other in a partially overlapping manner.

Abstract: The apparatus and method of supplying pulverized insulative material to within an existing wall structure which already has a pad of insulative material located within the wall. An access opening is provided through the outer surface of the wall. The tool is formed in substantially a right angle and is to be connectable to a machine for blowing insulation. The outer edge of the tool includes a cutting edge and the outer surface of the tool adjacent the cutting edge is formed slightly arcuate. The cutting edge portion of the tool is inserted through the access opening and moved against the pad of insulation thereby cutting such until the cutting edge of the tool is located directly adjacent the backing layer of material of the pad of insulation. At this time the tool is then pivoted causing the tool to penetrate the backing layer of material and continuing to pivot the tool causes the tool to be located between the backing layer of material and the inner wall.

Abstract: A roof or ceiling structure for buildings in the nature of a "space frame" or three-dimensional truss, including substantially planar panels and supporting struts and a method for producing the structure on-site. The panels serve a dual purpose as structural members interconnecting the struts and as surface elements for a roof or ceiling. Two panels spaced parallel to one another are interconnected by equiangular struts to form an array of tetrahedrons throughout the three-dimensional structural member. Each panel is made up from sheet material, and the seams between panels are accommodated by rotating each layer of panels relative to those adjacent to it so that the seams overlap abutting sheet surfaces in differing angular attitudes.

Abstract: An elevated, tiered seating platform which is convertible to a storage position forming a planar surface, such as a floor. The seating platform includes a pair of rigid support members parallely disposed which have upper surface angled grooves which receive a plurality of planar elongated seating members in the up position. In the storage position, the planar seating members are supported by grooves in a floor in a co-planar manner.

Abstract: Interlocked channel section panels having an interlocking joint wherein the male and female members are provided with deformable hook portions. During field assembly the female member overlies the male member with the outer surface of the corresponding upstanding members and upper portions of the male and female members adapted to mate throughout their lengths, and the deformable flange hook portions of the male and female members are capable of being reformed so as to conform intimately to effect continuous, positive interlocking of male and female ribs. A clip connector, including a body portion tightly sandwiched between associated corresponding upstanding members, upper portions and deformable flange hook portions of the sidewalls of the coupled panels, and a foot at the other end of the body portion of the clip connector anchored to a supporting member and fastening the connector along with the coupled panels to the supporting member, is also provided.

Abstract: A construction for supporting space units installed in a building, especially a multi-storey building, in a statically determinate manner, comprising three vertical columns with suspension means for holding the space units and horizontal beams and horizontal slabs supporting the vertical columns.

Abstract: A system covering an area of ground for adverse conditioning web-footed aquatic birds against roosting in the area comprises an array of elongated members each sufficiently thin that a web-footed aquatic bird cannot roost upon an individual member and each sufficiently spaced in substantially horizontal planes from adjacent elongated members that a web-footed aquatic bird cannot roost simultaneously upon a plurality of the members, the array being sufficiently closely spaced to the ground at the aforementioned area to prevent the birds from alighting directly into the area.

Abstract: A method of positioning and supporting a large industrial machine or other object on its foundation comprising placing hydraulic jacking units between the machine and the foundation, pressurizing the jacking units to move the object relative to the foundation to a selected position, maintaining the liquid in the jacking units under pressure so as to support the machine in its selected position, and pouring a hardenable grouting mixture around the jacking units to fix them in their selected positions.

Abstract: A vaulted structure of exceptional strength and rigidity is disclosed, characterized by a box-section construction of a plurality of radially spaced-apart sheet material gores joined by radially-extending members that coact with the gores to provide rigidifying and ventillation plenum forming means whereby the expansion-contraction characteristics of the structure are controlled to minimize thermal distortion. In a preferred embodiment the structure is in the form of a generally hemispherical dome formed of sheet metal gores.

Abstract: A method of erecting multi-story buildings by joining spaced elongated vertical columns of concrete. The method comprises providing a screw threaded metal socket in the face of each column to be connected. The socket of one column has a thread opposite in direction to that of the socket in the other column. One column is disposed over the other with the mouth of the sockets aligned.

Abstract: There is disclosed a post footing form holder and stabilizer system which is formed by a plurality of legs having upper and lower ends, each of the legs provided with means for mounting the legs to a post form along the lower end thereof, post form carrying means associated with the legs for accommodating and carrying the post form along the lower end thereof, the legs being further provided with stop means mounted thereon and spaced a distance upwardly from the lower end of the legs, and including stabilizer means associated with the post form holder for stabilizing and maintaining the post form in position when constructing a post footing.

Abstract: A false tenon structure for use in "split log" structures of various cross-sectional configurations, the tenon being of the appropriate cross-section and having at an end a cradle shaped to accept an adjacent tenon in an end portion thereof and transversely therethrough, and planar interfacing surfaces at the end thereof with one of the interfacing surfaces defining a projection such that left hand and right hand, i.e., mirror image alternatives, of the tenon may be stacked with one tenon in the cradle of the adjacent tenon and, secured to a building corner by fasteners driven through the projection, and abutted against split log facades to present a realistic appearance of conventional full log mortise and tenon structures, or of stacked members of other cross-sections.