Abstract: A headrig slabbing head for machining a face on a log comprising a movable base platform mounted on rails to allow for varying the position of the base platform which supports a guide system having a carriage member adapted for movement along the guide system. A chipping head driven by a motor is mounted to the carriage member for cutting a face on a log. The position of the carriage member on the guide system can be varied to allow the chipping head to be adjusted to machine a face on logs of different diameters.

Abstract: A chipper wherein the rotary head has its rotational axis inclined slightly from being normal relative to a log's transport axis and a stationary guide plate, disposed centrally within the knives in the head, parallels such axis to support the side of a log.

Abstract: A set of two cutting units are located on the end of a tool to be rotated. The cutting units are radially aligned and on a bevel. Each blade on each cutting unit has a radial rake of at least 60 degrees, a clearance angle, and serrations cut at an angle normal to the cutting edge to provide a series of points extending along that cutting edge.

Abstract: A cutter for square timber hewing, which consists of a cutter disk shaped like a truncated cone and on the mantle surface of which have been affixed cutter bits arranged after each other in helical configuration, so that cutting takes place with each cutter bit in its turn, starting at the outer periphery of the cutter cone and proceeding inward. The cutter bit has two cutting edges which lie on each other's extension and define an obtuse angle. One bit edge moves in parallel with the grain of the timber and the other bit edge moves obliquely with reference to the grain of the timber, hewing of the square timber being effected by feeding the trunk in between two opposing cutters or pairs of cutters. The cutter bit has been affixed to the cutter disk by the extension, pointing towards the center of the cutter disk, of the cutter bit's bit edge cutting in the direction of the grain.

Abstract: A chipping machine for processing wood including a chipping head with circumferentially spaced chipping knives to chip those portions of the wood in intereference with the chipping knives as the wood is moved past the inboard end of the chipping head, a facing head rotatably mounted adjacent the inboard end of the chipping head with facing cutters adapted to cut a flat face on the wood just inboard of the chipping knives, and drive means adapted to rotate the chipping head at a speed to generate the desired size wood chips and to rotate the facing head at a speed to generate the desired surface finish on the face of the wood.

Abstract: A knife is secured in a holder by a cambered clamp plate which is flattened against one face of the knife by a pair of sliding wedges engaging opposite side edge portions of the clamp plate. The wedges are tightened individually to facilitate accurate positioning of the clamp plate and proper seating of the knife for producing a smooth surface on the underlying wood.

Abstract: A chipper machine for simultaneously preparing a flat surface on a workpiece and comminuting material removed from the workpiece to produce the flat surface, in which several individually removable chipper knives are mounted on a hub mounted detachably on a rotatable arbor. A workpiece-supporting anvil includes a drop front section to permit removal of the chipper head from the arbor. The hub and arbor are steeply tapered to allow the chipper head to be easily removable from the arbor, and the chipper machine is provided with sharpened chipper knives by replacement of the entire chipper head. The several chipper knives are removed, sharpened, replaced, adjusted and again ground to cut uniformly with the chipper head removed from the chipper machine.

Abstract: Apparatus for shaping a flat surface on a workpiece includes a rotary chipper head having a plurality of radially oriented chipper knives having facing edges and chipping edges, and a circular saw blade having a diameter greater than that of the end of the chipper head closest to the workpiece. The circular saw blade is attached to the hub of the chipper head and apertures are defined in the circular saw blade to receive the ends of the knives of the chipper head, so that the chipper knives extend into the apertures in the circular saw blade. The surface formed on the workpiece is that cut by the teeth of the circular saw, and material cut from the workpiece by the saw blade is cut into chips by the chipper knives. The saw blade is thus allowed some freedom of movement relative to each chipper blade, and the facing edges of the chipper blades rotate within the kerf of the circular saw blade.

Abstract: Cutter head especially for a canter-chipper or chipper-edger comprising a body mounted on a shaft of rotation and cutting knives fastened on the body. The cutting knives form parallel cutting paths. The cutting knives in the cutting paths next to the log having a cutting width of about 8-25% of the total cutting width of the cutter head are mounted on an easily removable ring facilitating the replacement of these swiftly wearing cutting knives.

Abstract: A fastening system utilizes a tapered plug configured to be matingly received in an elongate, buttonhole-like slot. The slot has an enlarged receiving portion into which the tapered plug can be axially inserted, and a narrower retaining portion having a cross-section which tapers in correspondence with the taper of the plug to establish a snug, secure connection. The retaining portion has an undercut end region which matingly engages a maximum of surface area of the tapered plug to establish a connection which will transmit relatively heavy tension, compression and shear loadings as well as bending moments. The plug is preferably molded from plastics material. The slot is preferably formed using a rotating cutter.

Abstract: Tool for drilling holes, such as cylinder head drill, woodworking drill, and the like, which includes a carrier member having at least one endwise arranged end face cutter, or first cutting means, and at least one precutter, or second cutting means, extending in endwise direction, and circumferentially beyond the carrier member, the precutter defining the diameter of the hole to be produced with the tool and including at least one cutting edge. At least the part adjacent the cutting edge of the precutter is approximately parallel to the pertaining circumferential portion of the carrier member. The outer side of the precutter includes at least one guide surface parallel to the outer circumferential portion of the carrier member. The end face cutter and the precutter are removably securable with at least one clamping element to the carrier member and can be in the form of reversible cutting elements.

Abstract: A cutter head the entire cutting width of which is divided into a few parallel cutting strips defined by respective sets of cutting knives. The diameters of the cutting circles of the knives of the different sets increase stepwise in the direction away from the log. The angle of inclinaton of the main cutting edge of the knives in relation to the axis rotation of the cutter head is large in the case of the knives defining the cutting strips placed closest to the log and small in the case of the knives defining the cutting strips placed more distant from the log.

Abstract: A chipper comprises a rotor with a plurality of knives adapted to slab off the side of a log so that the first saw cut following the chipper removes a usable board. In order to make usable pulp chips, the chipper knives are of bent configuration each having a grain cutting portion which cuts across the grain and a planing portion which cuts parallel with the grain to leave a smooth board surface on the log as it is moved lengthwise past the chipper on a saw carriage. Each knife is clamped rigidly in working position by a cambered clamp plate which is pivoted into clamped position in a manner causing it to flatten against substantially the whole area of the knife. A backing bar and wedge assembly provides fine adjustment for the knife.