Abstract: A method of joining, siding to studs, flooring to floor joists and, roof planking to rafters without the use of visible fasteners, such as nails and screws. The framing members, studs, etc., have rounded corners at their joining edge and rounded grooves close to this edge forming a rounded oval shaped knob for the length of the framing member. The cladding members (siding, etc), have oval shaped cross grooves, being the same shape and size of the knobs of the framing members, cut across them at the same spacing as the framing members. These grooves are undercut on each side so that when they are attached to the framing the undercut parts of the cross groove fit into the grooves along each edge of the framing member. Attachment is made by bending back the cladding at the cross grooves to open up the opening of the cross groove enough that it can be snapped over the knob of the framing member or the cladding can be forced over the knob edges by tapping it with a hard rubber mallet.

Abstract: Where a structural frame has elongated spaced parallel framing members therein, longitudinally extending edges of which are substantially coplanar with one another on one side of the frame, boards of wood facing material are superimposed on the edges of the framing members, and interlocked with one another, as well as with the framing members, at male/female joints formed therebetween along parallels to the right angular coordinates of the frame in the plane of the edges. The joints take the form of tongue and groove joints, and in the case of those between the boards and the framing members, the joints are also dovetailed. Certain improvements in sheet metal clad wood facing materials are also shown, as is a process for making boards of sheet metal clad wood facing material from planks of wood which are only partially dried when they are put to use in the process.

Abstract: A door is fabricated from wooden boards arranged edge to edge in a layer and secured together by metal strips having fasteners in the form of integral nail-like projections. The strips extend horizontally of the door to one vertical edge thereof, and include integral hinge means for mounting the door. The door may have two layers of boards with the strips sandwiched between the two layers and fastened to both of them.