Abstract: A clevis-shaped bracket including an A-frame is adapted for attachment to the three point hitch of a tractor. A roller supporting frame is mounted within the bracket for articulated movement about the vertical axis of a pivot located within the hitch supported bracket to provide a short turning radius for tractor and attachment. The roller equipped frame includes a walled structure which serves as a water tank. A hydraulic cylinder is disposed intermediate the tractor hitch bar and the attachment in an inclined manner to bias the attachment downwardly to increase ground pressure. An adjustable frame is provided with telescopic beam members to mount rollers of increased length or other ground bearing instrumentalities.

Abstract: An adaptor for attachment to the three point hitch of a tractor enabling attachment of various implements regardless of implement attachment point spacing. A base member adjustably carries coupling means at its lower sides positionable to coincide with the spacing of the implement attachment points. A vertically positionable hook receives the attachment pin carried at the top of the implement A-frame. Locks automatically confine the implement attachment points against dislodgement. A lock control enables lock release from the tractor driver's station. A hydraulic cylinder is in inclined, intercoupled relationship with the adaptor and tractor to impart both upward and downward powered movement to the adaptor. Lift forks may be attached to the adaptor. Ball hitch members on the adaptor enable towing of various types of trailers.

Abstract: A scraper blade attachment including a blade assembly located between the front and rear wheels of the tractor and supported by forwardly extending rail members swingably coupled to the forward end of a tractor frame. The rail members and the blade assembly are vertically positioned as well as transversely inclined by hydraulic cylinders supported by the tractor frame. Box beam sections of the scraper blade assembly adjustably receive the rail members. Similarly, an anti-sway assembly is also adjustably mounted on the scraper blade assembly and extends rearwardly for pivotal coupling to the tractor frame. A blade swing cylinder is also supported by the anti-sway assembly.

Abstract: The interconnectable border frames with protrusions and grooves are also provided in an improved wooden form for panels which can be combined to form the essential roof, wall, and floor components of a complete building. The floor and wall panels uniquely provide for selectivity in the location of the floor panels along the vertical height of the wall panels.

Abstract: An attachment for tractors including a pair of elongate support members attached at their forward ends to the tractor frame and at their rearward ends to the tractor's three point hitch arms. A blade assembly is carried by the elongate members and is adjusted vertically or inclined transversely to the tractor centerline by adjustment of three point hitch components. The blade of the assembly is also rotatable about a vertical pivot with a locking mechanism provided for the blade. A tractor mounted bracket removably mounts the forward ends of the elongate support members.

Abstract: A vertically sliding sash window is provided with elongated slide bars seated in recesses of the jambs with the elongated slide bars being pivotally connected to an upper end of the sliding vent of the window. The opposite end of the sliding vent is releasably locked to the slide bars. The sliding vent can thus be slid up and down as a conventional sliding sash window or be pivoted inward for cleaning.

Abstract: Spaced, opposed plywood sheets having kerfs in their peripheral edges are integrally joined by S-shaped aluminum bars that join the edges of the plywood sheets to form panels. Each bar is provided with spaced, elongated splines that interfit into the kerfs and are adhesively bonded therein. The bars are welded together to form an integral border frame. Each S-shaped bar includes an outwardly facing groove or protrusion and a duct joined by a common wall. The top bar and one side bar of the border frame are turned end for end relative to the bottom and opposite side bars so that the duct of a bar forming a border frame of an adjacent panel will interfit into the groove of the bar forming the border frame of the first panel. In this manner a continuous wall of interfitting panels may be constructed. Various forms of bars are provided to interconnect other building components such as beams, windows, doors and the like, with the panels.