Woodworking – Process – Mechanical cutting or shaping
Patent
1993-01-27
1994-03-29
Bray, W. Donald
Woodworking
Process
Mechanical cutting or shaping
144270, 144381, 269234, 269296, B27H 100
Patent
active
052976025
ABSTRACT:
A method and fixture for placing a permanent bend into a wooden pole. In the preferred embodiment, a fixture includes a center block receiving the center portion of a pole having the opposite ends of the pole extending through the opposite ends of the fixture. A pair of cylindrical tubes are forced downwardly against the opposite ends of the pole by an external cylinder motor and, in turn, forces the opposite ends of 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 cylindrical tubes, thereby holding the cylindrical tubes downwardly against the pole in a bent configuration while the external force is removed. The method of permanently bending a green pole includes harvesting a tree during the warm growing season and then removing the limbs to produce a wooden pole. The pole is then heated to kill living things within the pole and stored for future use and/or bending.
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
patent: 5183091 (1993-02-01), Nobbe
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