Woodworking – Process – Mechanical cutting or shaping
Patent
1992-05-01
1993-02-02
Bray, W. Donald
Woodworking
Process
Mechanical cutting or shaping
144254, 144270, 144381, 269234, 269296, B27H 100
Patent
active
051830914
ABSTRACT:
A method and fixture for placing a permanent bend into a wooden pole. A channel shaped fixture receives the opposite ends of a wooden pole inserted therein and positions the pole above the bottom wall of the fixture. A cylindrical tube is forced downwardly against the pole by an external cylinder motor and in turn forces the pole against the bottom wall of the fixture thereby bending the pole. A pair of wedge shaped members are extended through the fixture and into the intermediate member thereby holding the intermediate member downwardly against the pole in a bent configuration while the external force is removed. The method of permanently bending a green pole includes positioning a green wooden pole shortly after harvesting in the holding fixture and then bending the pole to a bent configuration with the intermediate member. The fixture with pole in the bent configuration is then inserted into a dry kiln and heated.
REFERENCES:
patent: 360848 (1887-04-01), Bond
patent: 361123 (1887-04-01), Bond
patent: 1994607 (1935-03-01), Derby
patent: 2081638 (1937-05-01), Owens
patent: 3003204 (1961-10-01), Bryant
patent: 4469156 (1984-09-01), Norimoto et al.
patent: 4741371 (1988-05-01), Lord
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