Joint for demountable furniture

In an article of furniture having selected components which are adapted to be disassembled and assembled in a given direction, a joint providing such disassembly and reassembly between said selected components comprising:

• two axially mutually separable slip fitting elements, one said element being fixed to one of said selected components and another said element being fixed to another said selected components, said elements being arranged with their axial slip fit in the same direction as said selected components are adapted to be disassembled, said one element comprising a polygonal tubular member having a plurality of generally planar side walls and at least one edge portion, said another element comprising a polygonal bar member having at least two generally planar sides, and means for releasably locking said elements when they are mutually slip fitted, said locking means comprising a set screw means threadably engaged with a transverse threaded bore of said bar member, said transverse threaded bore having an end opening and extending from one planar side of said bar member to another planar side of said bar member, said one element having at least two generally planar sides located adjacent said bore end opening, said set screw means protruding from said bar member and selectively operable transversely of the direction of slip fit to one position for transversely directly contacting and forcefully bearing against two side walls of said tubular member and respectively forcing two of said side walls of said bar member against two of said sides of said tubular member, thereby to lock said tubular and bar members against axial separation, and to another position permitting said tubular and bar members to axially separate, said tubular member having an access opening aligned with and forming a continuation of said transverse threaded bore of said bar member, said end opening spaced away from said access opening, whereby the said two sides of said bar member engage only portions of said two side walls of said tubular member.

A joint for attaching a first component of an article of furniture to a second component thereof, comprising:

• an elongated polygonal tubular member having at least one edge portion, said tubular member mounted at one end to said first component, said tubular member having an end opening, a plurality of generally planar sidewalls and an access opening in said edge portion;
• an elongated polygonal bar member mounted at one end to said second component and being adapted to axially slip fit into said tubular member through said end opening, said bar member including a transverse threaded bore having an end opening, said bar member having at least two generally planar sides located adjacent said bore end opening, said transverse threaded bore extending from one planar side of said bar member to another planar side of said bar member
• and means for locking said bar member within said tubular member when said bar member and said tubular member are operatively assembled with two of said bar member planar sides respectively aligned with and bearing against two of said planar side walls, and said end opening spaced away from said edge portion, said locking means comprising a set screw threadedly engaged with said transverse threaded bore, said access opening being located to align with said threaded bore and provide access to said set screw when said bar member is slip fit into said tubular member, said set screw being selectively operable to directly contact and simultaneously bear against two of said side walls of said tubular member.