Compression log debarking apparatus

Details Compression log debarking apparatus Compression log debarking apparatus

1989-12-27

1991-06-11

Bray, W. Donald

Woodworking

Bark rosser

Tree climber

144208R, 144340, B27L 300

Patent

active

050224468

ABSTRACT:
Apparatus for debarking a log using the compression debarking technique includes rollers which apply radial pressure to the log to separate the bark from the wood of the log. Pairs of rollers mounted in a bogie-like arrangement on the end of respective arms bear against the log. At each roller contact location, the log is also contacted by either a fixed roller or another pair of bogie-mounted rollers. At least two of the rollers of each set are driven by a reversible motor, to rotate the log while pressure is applied to it. The (preferably variable) angle which the planes of rotation of the rollers make with the longitudinal axis of the log ensures that the log is transported through the set of rollers as pressure is applied to the log. Cutting means, such as a knife blade on the outer surface of at least one roller, slices the bark which has been separated from the wood of the log, so that strips of bark fall from the log. The invention is especially suitable for removing thick stringy, fibrous bark from logs.

REFERENCES:
patent: 2945523 (1960-07-01), Jenkins
patent: 3263720 (1966-08-01), Brock et al.
patent: 3587685 (1971-06-01), Morey
patent: 4396048 (1983-08-01), Dubey

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