Apparatus for removing bark from whole logs

Details Apparatus for removing bark from whole logs Apparatus for removing bark from whole logs

1993-02-17

1993-11-23

Bray, W. Donald

Woodworking

Bark rosser

Tree climber

144208R, 144242R, 144242D, 144245A, 144341, B27C 900

Patent

active

052635228

ABSTRACT:
An apparatus for removing the bark of whole, or tree-length, logs has an open frame with a feed end, a discharge end, a base and two generally sloping sides, and a plurality of spaced-apart conveyor assemblies positioned along one side of the frame, each conveyor assembly having a plurality of lifters moving in channels. The lifters simultaneously lift the whole logs while advancing the logs incrementally toward the discharge end of the frame, then release the whole logs to fall onto the rest of the logs. The whole logs are maintained in continuous rolling, tumbling, abrading contact to remove the bark without damaging the underlying wood. The apparatus may be supplied with a canopy for use in winter and/or in cold climates in trapping heat of warm water or steam sprayed onto the logs to thaw them. The apparatus may be assembled from trailer-transportable modular units.

REFERENCES:
patent: 1281155 (1918-10-01), Guettler
patent: 1319935 (1919-10-01), Thorne
patent: 1966153 (1934-07-01), Thorne
patent: 2125529 (1938-08-01), Ullgren
patent: 2137451 (1938-11-01), Hillbom
patent: 2647548 (1953-08-01), Guettler
patent: 2829687 (1958-04-01), Ramsdell et al.
patent: 3228440 (1966-01-01), Ferrabee
patent: 3973606 (1976-08-01), Carbonneau
patent: 4691750 (1987-09-01), Nakajima
patent: 4805677 (1989-02-01), Wallin
"Bark Peeling Machines and Methods", Jan. 1949, U.S. Dept. of Agriculture, Forest Service: Publication No. D1730, pp. 14-15 and FIG. 10.

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