Furniture frames

Claim 2

A rectangular furniture frame comprising four leg members each of which consists of an extruded profile bar with a pair of continuous longitudinal grooves substantially at right angles to each other and symmetrically arranged about a centre line through the cross-section of said bar at 45* to each of said grooves, said bar being bevelled externally across said centre line, and four rail members each consisting of a substantially flat plane bar the ends of which are located in the grooves of adjacent leg members and clamped therein, by screws inserted from the inside of the leg members, so as to lie with its top surface flush with the top surface of the corresponding leg members.

Claim 3

A furniture frame comprising a number of legs of extruded material each having two or more continuous uninterrupted longitudinal grooves, a like number of rails having ends that fit into said grooves, each said end having a machined end surface for mating with the base of a groove to determine the angular relationship between the rail and the leg, and clamping screws acting directly between the rail and the leg for simultaneously forcing the end of the rail against said base and forcing a side surface of the rail into frictional contact with a side of the groove, wherein said clamping screws comprise at each rail end at least one taper ended screw threaded in a hole in one of the ribs forming the groove of the leg, co-operating with a transverse recess in the end of the rail, one edge of which recess nearest said machined end surface is located so as to be engaged by the leading portion of the taper of the corresponding screw, so as upon tightening to force said rail lengthwise with its machined end surface against the base of the groove as well as causing said frictional contact.

Claim 4

A furniture frame comprising a number of legs of extruded material each having two or more continuous uninterrupted longitudinal grooves, a like number of rails having ends that fit into said grooves, each said end having a machined end surface for mating with the base of a groove to determine the angular relationship between the rail and the leg, and clamping screws acting directly between the rail and the leg for simultaneously forcing the end of the rail against said base and forcing a side surface of the rail into frictional contact with a side of the groove, wherein said clamping screws comprise at each rail end at least one taper ended screw threaded in a hole in one of the ribs forming the groove of the leg, co-operating with a transverse recess in the end of the rail, one edge of which recess nearest said machined end surface is located so as to be engaged by the leading portion of the taper of the corresponding screw, so as upon tightening to force said rail lengthwise with its machined end surface against the base of the groove as well as causing said frictional contact.

Claim 5

A furniture frame according to claim 2, wherein said recess does not extend through to the edge surfaces of said rail.