Abstract: The invention relates to a method and apparatus for removing bark balls from a log flow traveling on a conveyor (3) which extends from a debarking drum (1) to a chipper (2), said conveyor (3) including a roller assembly (4) provided with an opening (5) for dumping from the conveyor (3) a sub-flow consisting of wood pieces and bark balls. The apparatus comprises an adjustable dispenser device (6) for further dividing the sub-flow falling from the conveyor (3) into a portion including mainly wood pieces and a portion including mainly bark balls.

Abstract: A method and apparatus for separating pieces of wood into different qualities in a wood sorting process is characterized in that the brightness as well as the texture of the surface of the wood are measured, and the pieces of wood are separated into different quality groups according to the measurements results obtained.