Woodworking – Bark rosser – Tree climber
Patent
1988-08-02
1989-05-16
Bray, W. Donald
Woodworking
Bark rosser
Tree climber
92106, 92110, 144208R, B27L 100
Patent
active
048300721
ABSTRACT:
The debarking machine of the instant invention includes a frame having a stationary central hub, a ring rotatably mounted on the frame for rotation about the hub having air-pressure-actuated tools carried on the ring. Power means are provided for rotating the ring. Air passage means extend from the central hub to the ring for supply actuating air to the tools. Air passage means includes a rotary-air-seal coupling, which comprises a substantially U-shaped channel formed of a pair of opposed L-shaped annular structures which extend about the hub and have a first air plenum carried therein. A pair of annular, floating seals are disposed on the interior side walls of the U-shaped channel and a rotary disc, having a second air plenum therein, is mounted on the ring and received in the U-shaped channel, in rotatable contact with the air seals.
REFERENCES:
patent: 2945706 (1960-07-01), Franked
patent: 3053294 (1962-09-01), Andersson
patent: 3137329 (1964-06-01), Smith
patent: 4402353 (1983-09-01), Pousette
Bray W. Donald
Brunette Machine Works Ltd.
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