Abstract: A device is disclosed for assembling frames and moulding frames, comprising a monolithic assembly piece (31) forming a double tenon and having the form of two identical circular truncated cones of a height substantially equal to the thickness of the workpieces (32, 33) to be assembled. Said assembly piece is fitted into blind bores (34, 35) of corresponding shape having on the edge junction surfaces of the workpieces to be assembled. It is intended to assembling, with or without bonding, joinery pieces of wood or other materials, such as mitered moulding frames. The mitering machine for implementing the assembly device (31) comprises a sealed casing (1) equipped with two circular saw blades (4, 5) perpendicular to each other and driven with a single electric motor. The casing is mobile vertically with respect to a working surface (3) equipped with fixing means (15, 16) for the workpiece to be cut.

Abstract: A picture frame with a rabbeted inner periphery, forming an abutment for a stack including a glass pane, a decorative insert and a backing plate, has an inner peripheral groove in a plane paralleling the rabbet and another groove transverse to that plane close to the outer edge of the rear face of each of its members. One or more clips of elastic material (metal or plastic) engage each frame member from the rear, each clip having a channel profile with mutually perpendicular lips snap-fitted into the inner and outer grooves and further having at least one dovetailed transverse mortise open toward the interior and the rear of the frame. Each clip is engaged by at least one elbow of similar elastic material with two arms adjoining each other at an acute angle, either of these arms fitting tightly into a corresponding mortise while the other arm bears resiliently upon the rear surface of the stack resting against the rabbet.