Abstract: A polyhedral knife that in side profile resembles a gull wing is configured for being securely retained in a clamping assembly defined by a clamp and a holder, wherein the knife is retained between the clamp and the holder. The knife has a central portion between opposite wing portions. The knife is rectangular in shape and has a central, upwardly extending semi-circular upper ridge that extends across the knife on the upper surface and the upper ridge defines a locator that is retained in a cooperatively shaped groove in the clamp. The lower surface of the knife is defined by a central locator ridge and concave surfaces on opposite sides of the locator. The clamp and the holder have cooperatively shaped, angled and radiused surfaces to mate with facing surfaces of the knife.

Abstract: The barking device includes a barking arm and a barking tool which is mounted in a tool seat of the barking arm. The barking tool has a convex mounting surface, while the seat surface of the barking arm is concave. The barking tool is movably mounted in the tool seat and displaceable by rotating displacement. It is connected to the tool seat by a screw and a sleeve-like nut. The head of one of the screw or nut is designed to prevent displacement and rotation of the barking tool.

Abstract: The invention relates to a barking device comprising a barking arm (1) and a barking tool (2) which is mountable in a tool seat of the barking arm. The barking tool comprises a convex mounting surface (13), while the seat surface (7) of the barking arm is concave. The barking tool is, with the aid of a connecting means, mountable in the tool seat and displaceable by rotating displacement. The connecting means comprises a screw (18) and a sleeve-like nut (21). The head (20, 23) of one of the connecting means parts (18, 21) is designed to prevent displacement and rotation.

Abstract: The invention concerns a barking tool for barking machines of the type having a plurality of swinging arms, each being at an inner end pivotally mounted on an annular rotator which is rotatable about an axis of rotation, and each having at a free outer end a processing edge. The processing edge is defined between a front and a top surface, which is adapted, during barking, to make an acute angle with the circumferential surface of the log. The barking tool further has a bead, which is located on the top surface in an area adjacent to the end of the processing edge furthest down in the feeding direction.

Abstract: The invention relates to a debarking means for rotation ring type barking machines, and of the type comprising a plurality of swinging arms (1) yieldably engaging the circumference of an unbarked log and each formed at its free end with a seat (4) for a debarking means (2) detachably mounted by means of a bolt connection (3). The debarking means has a leading edge (7) serving as a cutting edge and a trailing support edge or surface (8) adapted to engage a shoulder (5) on the seat (4) to prevent turning of said debarking means relative to the arm. The support edge (8) extends obliquely in relation to the cutting edge (7), more particularly along the entire width of the debarking means and between two side edges of said means which are of different length.