Patent ID: 6619345
Filing Date: 2003-09-16
Classification: B27L,Y10T

Abstract:
An improved debarking shaft arrangement for a debarking machine, intended for the decortication or pretreatment of logs before a separately performed final barking and for the expulsion of at least some of the removed barks from a wood flow passing through the debarking machine, said debarking machine comprising a number of rotatable debarking shafts having opposed ends, said shafts extending parallel to the advancing direction of the logs to be fed therethrough and provided with a number of teeth extending beyond circumferential surface of the shaft and adapted to strip bark off the logs transversely to the lengthwise direction of the logs and at the same to convey the logs transversely relative to said shafts, said shafts supported for rotation by bearings adjacent each end and provided with rotational energy through a sprocket fixed to the shaft, said shafts, together with the teeth thereof, being adapted to constitute at least a part of a support surface, upon which the logs travel through the debarking machine, wherein the improvement comprises the teeth are configured to remove bark from the logs in both rotating directions of said rotatable debarking shafts, and both ends of the debarking shafts carry a sprocket.