Joints and connections – Branched
Patent
1977-02-07
1978-11-14
Shedd, Wayne L.
Joints and connections
Branched
52285, 52585, 52591, 312263, 403231, 403381, F16B 500
Patent
active
041253388
ABSTRACT:
A new method of joining boards in the "Cross" connection, "Tee" connection and "Angle" connection is disclosed, which type of connections are widely employed in constructing book shelves, cabinets, etc. Said method of joining boards comprising at a rectangular bar with grooves formed into each of four sides of the bar resulting in a quatrefoil-shaped cross section of the bar and a "cross," "tee" or "angle" made of a metallic rod. The boards to be joined have a hole disposed at the end face, which hole receives an arm of said "cross," "tee" or "angle" depending on the type of joint. The end face of the board has a protrusion built parallel to the plane of the board, which protrusion has a narrower dimension at the root resulting in a cross section similar to that of a rail road. Of course, said grooves formed on said rectangular bar has matching cross sections to receive said rail-like protrusions on the end face of the board in a sliding relationship. The angular position of each of the boards joined together is set by the "cross" engaging the holes disposed on the end face of the boards. Then, the connection is completed by pressing a bar with a quatrefoil cross section into the quatrefoil shaped cavity formed by the ends of the four boards to be joined together. It is self-evident that this principle of "cross" connection can be readily applied to "tee" or "angular" connections.
REFERENCES:
patent: 1898297 (1933-02-01), Fox
patent: 3186561 (1965-06-01), Strassle
patent: 3295281 (1967-01-01), Dixon
patent: 3491896 (1970-01-01), Crary
patent: 3547472 (1970-12-01), Ehrman
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