Abstract: A three-edged tool (12) for a woodworking machine. The edges (18,19,20) of the tool are arranged with equal angular spacing about a tool body and protrude therefrom. In the surfaces (24,25,26) between the edges are recesses (27,28,29) so shaped as to retain the tool by mating engagement with a correspondingly shaped protrusion (30) provided on a tool carrier (10), and to act as a kerf in order to guide a break in case of overload of an edge (18) to the area between two recesses (27,28). Fastening means for the tool include a support part (14) provided on the tool carrier and a clamping part (15). The support part (14) carries the protrusion (30), which is shaped to engage in a recess (28) of the tool, and has a support surface (14') for supporting a clearance surface of an edge (19) which is inactive when the tool is mounted on the tool carrier. The clamping part (15) has a clamping surface (22) which is adapted to press against the clearance surface of the second inactive edge (20) of the tool.

Abstract: A debarking device comprising a debarking arm with a debarking tool mounted to the end thereof. The debarking tool has a curved bearing surface and the debarking arm is provided with a curved recessed seat for receiving the debarking tool. The bearing surface of the debarking tool and the recessed seat of the arm are provided with guides for allowing guided adjustments in the orientation of the debarking tool relative to the debarking arm. Further, the debarking device includes a fastener for retaining and locking the debarking tool at a desired adjusted orientation with respect to the arm.

Abstract: A cutting tool and holder combination including a cylindrical tool having a cutting edge in at least one of its ends and at least one annular guide groove around its periphery. The tool holder includes a part-cylindrical recess in a tool carrier and a clamping device connected to the tool carrier. The clamping device includes a part-cylindrical surface adapted to be pressed towards the part-cylindrical recess, thereby clamping the tool between this surface and recess. The recess includes at least one part-annular guide ridge corresponding to the annular guide groove of the tool. Axial displacement of the tool is prevented by engagement of the ridge in the groove. Rotation of the tool may take place upon untightening of the clamping device.

Abstract: A cutting tool assembly for the surface treatment of round timber including an arm having at one end thereof a recess portion at least a portion of which is shaped substantially as a partial regular pyramid, a cutting tool shaped substantially as a regular pyramidal funnel adapted for engagement with and disposed in the recess and fastening means for removably securing the cutting tool in the recess.

Abstract: A debarking tool for debarking hollow rotors, comprising a shaft carrying a radially extending arm, said arm being pressed integrally from a steel plate to the shape of a chute adapted to face its concave side onto the feed direction of a log to be debarked.