Abstract: A rail and stile member of a wood frame is joined at a curvilinear edge at abutting facial surfaces. In a number of embodiments the members have a tenon and mortise connection behind the curvilinear edge. In one embodiment a three piece joint is formed with curvilinear edges at each pair of abutting facial surfaces. The method of forming the joint includes the forming of a guide template having the desired configuration but displaced from the joint line and cutting of the rail and stile with a router tool of a preselected bit size.

Abstract: A self-contained compressible chamber for supporting the perimeter of the fluid-filled, flexible bladder of a waterbed mattress which provides improved structural rigidity. The chamber includes a compressible medium and an elongate, substantially rigid member extending therethrough. Individual chambers are retained in supporting engagement with the perimeter of the bladder. The ends of the rigid members of the individual chambers are fastened to adjacent rigid members, whereby the perimeter of the bladder is substantially completely supported with an improved degree of structural rigidity while retaining mattress edge comfort.

Abstract: A door frame kit comprises two stiles, a threshold member, and a lintel member, each stile preferably being engageable with said members irrespective of which end of the stile is uppermost. Each stile has a pair of flanges at at least one end. Each flange, which has a transverse projection, is insertable through a corresponding longitudinal opening in said one member, the stile and said one member abutting when the flange is so inserted. The other end of each stile is securable to the other member to complete a door frame.

Abstract: The fixed joint of construction pieces comprises an intermediate construction piece having two opposite sides provided respectively with concave recesses, a transverse construction piece having a pair of convex surface portions each matching an assigned concave recess in the intermediate piece, and fastening means tightly connecting the two pieces and compressing the convex surfaces against the concave recesses.

Abstract: The corner-joint or the angular joint of oblong elements formed of a glueable material preferably wood is provided. A block is inserted in the corner and a joining surface of the block and the elements to be joined is provided with intermeshing tongues and grooves preferably of the finger-type form in their longitudinal direction a segment of a circle about an axis perpendicular to the plane of the joint elements. The matching fingers are glued together. The joint of this invention may be used for instance in a lattice girder and especially in frames for furniture. Further by a simple provision it will be possible to obtain a three-dimensional joint by adding a third element extending in the direction perpendicular to the plane of said two elements.

Abstract: In a double-sigmoid connector, as used to interconnect structural members in a trusswork and comprises a pair of arcuate elbows joined to each other at their outer peripheral midsections, coaxial outlets are formed in the elbows at their inner peripheral midsections. Accordingly, lateral interconnections may be made.

Abstract: In a corner joint construction of the dovetail type, the tenons and mortises on each wall at the end portion extend only partially through the thickness of the walls commencing at the inner portion thereof. The remaining or outer portion of the wall thickness is mitered from the termination of the tenons and mortises outwardly to form abutting, solid end portions which conceal the tenons and mortises therebehind.

Abstract: Exercising apparatus having a frame made of detachably, telescopically coupled tubular members. Connected to the top most cross member of the frame is a substantially rigid spring member that extends between and removably connects the frame with a door. The substantially rigid spring member includes two parallel spaced arms. At the opposite end of the member are two longitudinally spaced elements that engage respectively the front surface of a door, the top of the door and the upper back surface of a door. With the substantially rigid spring member in place for use by an exerciser the frame will be spaced from the top of the door.

Abstract: This invention provides an all-wooden culvert shaped as an equilateral triangle in which the three sides are joined solely by interlocking of the structural members in notches in each member. All sides are composed of a series of identical members which feature facilitates member fabrication and allows for culvert installation by unskilled labor.

Abstract: A load bearing two-way pallet fabricated as a permanent piece of hardware from tubular members integrally joined with transverse load bars embraced and enclosed by support rails. A common tube cross section is employed throughout with intermediate notching that reinforces complimentary engagement of one notched member with the other, and with end notching that reinforces the terminal ends of the tube members that are engaged with an embracing tube member. A feature is the method of manufacture wherein a rectangular and planar ladder-form is initially fabricated and the members thereof interjoined, followed by bending reformation of the rail members thereof so as to establish upwardly open transversely disposed channels for the reception of lifting forks, and openings beneath raised load bearing bars so as to receive the longitudinal insertion of lifting forks.

Abstract: The invention relates to a support means for an actuating arm which is pivotally movable into and out of engagement with a stop element of a spring control element of a spring clutch. The support means includes a frame having a suitable opening for slidably receiving the actuating arm and a retaining member resiliently gripping the frame to retain the actuating arm in the opening in the frame.

Abstract: A modular post and beam joint includes slidably and tightly interfitting transverse beam members and primary and secondary post members. The latter define slots receiving the interfitting transverse beam members, as well as fingers which project endwise oppositely at the four corners defined by the transverse beam members.

Abstract: A coupling for establishing structural continuity between two angularly related beams, and in particular roof rafters and the like, and comprised of identical complementary members and each fabricated from rectangular sheet partially sheared and formed along a line to establish an angle with a bearing plate and flange plate for engagement with overlapped beam ends respectively, and bent along parallel lines angularly disposed to the first mentioned line to establish a strap plate integral with said flange plate and embracing the bearing plate of the complementary coupling member and beam engaged thereby, the plates being secured to said beams by shear fasteners.

Abstract: A system for joining two or more members, at least one of which is tubular, wherein at least the longitudinal axis of the tubular member is out of alignment with the longitudinal axis of another member. The tubular member is provided with an opening for receiving a portion of another member and a fastener assembly is located within the tubular member for rigidly securing together the members.