Abstract: A chipping head, particularly a chipping head of a chipping canter, is disclosed comprising a head body having thereon mounted multiple chipping knives that are adapted on the head body in an annular fashion spaced at a distance from each other. Onto the chipping head, on the head end face thereof touching a wooden workpiece being processing and/or on the lateral surface of a disc-like or flange-like element such as a circular saw blade mounted on the chipping head body, there is formed at least one groove and/or ridge, the groove and/or ridge spiraling about the axis of head body rotation so that the starting point of the groove and/or ridge is radially displaced at a distance from the axis of rotation and, respectively, the end point of the groove/ridge is closer than its starting point to the axis of rotation.

Abstract: A circular saw for sawing wood pieces, which circular saw has blade guides (5, 21) which are fastened to fastening arms (4, 22), and in which the fastening arm (4, 22) of the blade guides (5, 21) is fastened concentrically with a drive axle (6, 23) of the saw blade (1) pivotedly so that the fastening arm is able to turn around the drive axle (6, 23), and the blade guides are fastened to the fastening arm (4, 22) pivotedly with a fastening bearing (10, 24) so that they are able to turn around the fastening bearing (10, 24).

Abstract: A chipping head, particularly a chipping head of a chipping canter, is disclosed comprising a head body having thereon mounted multiple chipping knives that are adapted on the head body in an annular fashion spaced at a distance from each other. Onto the chipping head, on the head end face thereof touching a wooden workpiece being processing and/or on the lateral surface of a disc-like or flange-like element such as a circular saw blade mounted on the chipping head body, there is formed at least one groove and/or ridge, the groove and/or ridge spiraling about the axis of head body rotation so that the starting point of the groove and/or ridge is radially displaced at a distance from the axis of rotation and, respectively, the end point of the groove/ridge is closer than its starting point to the axis of rotation.

Abstract: Procedure for working curved tree trunks by chipping into timber products, such as boards and cants, in which procedure the trunk (T) is crook-chipped and a straight side board (S1) is edged at the same time. The invention also relates to an apparatus for implementing the procedure.

Abstract: Procedure for straightening a circular-saw blade (2), in which procedure the blade (2) is mounted on a shaft (3). The geometry of the blade is measured, the measured values are compared with reference values, deformations in the blade are straightened by means of blade treating elements (10, 11, 12, 13, 14, 15, 16, 23, 24), the blade is tensioned by means of working devices (13, 14), the blade (2) is rotated, lateral forces are applied to the blade (2), the effect of the forces on the blade (2) is measured while the blade is rotating, the measured values are compared with the reference values, and some or all of the operations mentioned above are repeated, if necessary, in a desired order, until the desired rigidity and straightness of the blade (2) have been achieved. The invention also relates to an apparatus for straightening a blade.

Abstract: The present invention concerns a knife insert (1) for a wood-working machine, said knife insert being intended for mounting on a rotatable knife head, said knife insert having a first cutting edge (2) and a second cutting edge (3), the latter being arranged to cut obliquely to the grain of the wood stock, whereby said knife insert is adapted mountable to said knife head by its heel (4), which is the part of the insert situated closer to the center axis of the knife head than said first cutting edge (2). The first cutting edge (2) and the second cutting edge (3) are located relative to each other so that the second cutting edge (3), which cuts obliquely on the grain of stock, under all conditions hits the surface of the stock to be worked earlier than the first cutting edge (2).

Abstract: Procedure for working tree trunks by machining into wood products, such as boards and cants. In the procedure, from trunks (1) preferably trimmed on at least two sides, at first at least one side board (3) is sawn so that at least part of the dull edge (2) remains on the side board (3), whereupon the dull edges (2') of the side board are edged. The side board (3) is moved together with the central section (1') during the edging operation and the side board (3) and the central section (1') are kept at a distance from each other by means of a separating element (6), such as a dividing knife, at least during the edging operation.

Abstract: A debarking and chipping apparatus mainly for coniferous trees, intended for the production and recovery of bark chips and chips for digestion from small trees (5) having a diameter of 4-20 cm. The apparatus is made up of a debarking unit (1), which debarks and cuts the bark into bark chips, and the debarking unit is followed by a chipper (2) which turns the heartwood (16) into chips for digestion.

Abstract: A fastening system for a circular saw blade (1, 10), wherein the circular saw blade is fastened by means of a screw/screws (2, 9) to a fastening flange on the turning arbor (6), to a chipping edger (3) in a hewing saw, or to a chipping cutter (8). The fastening part (5, 11) of the circular saw blade (1, 10) is made frustoconical and the circular saw blade (1, 10) is fastened between two corresponding frustoconical surfaces.

Abstract: A fastening system for a rip saw blade and chipping edger combination includes at least one rip saw blade provided with holes and at least one chipping edger mounted collinearly and adjacent to the rip saw blade on a turning arbor so that the teeth of the chipping edger is aligned with the holes provided in the rip saw blade. The rip saw blade, the chipping edge and the turning arbor are all held stationary relative to each other by anchoring the same on the turning arbor with a fastening device such as a nut. An intermediate space or recess is provided between the rip saw blade and the chipping edger to permit the rip saw blade to yield in either lateral direction.

Abstract: The invention relates to a chain conveyor, for example for conveying sawn wood after a sawing machine, the chain conveyor being made up of two adjacent conveyor chains on top of which the conveyor flights supporting sawn wood are located. The conveyor flight is articulated in such a manner that the width of the entire chain conveyor can be regulated by adjusting the distance between the conveyor chains.

Abstract: The present invention concerns a circular saw blade assembly for a saw mill or similar apparatus used for sawing boards from logs, said circular saw blade assembly comprising at least two circular saw blades attachable to and axially transferrable on a saw blade spindle as well as one or several edge milling cutters for shaping the board to a correct width.

Abstract: An apparatus for the cutting and sawing of logs including a cutting unit mounted to engage the log and including a pair of spaced apart axle sets. Each of said axle sets has mounted thereon at least one disc saw for sawing the logs in a lengthwise direction and at least one chipper edger for chipping a board to the right width. The cutting unit is moveable so that the axle sets are moved and the position of the disc saw and the chipper edger on each of the axle sets in changed relative to the log.

Abstract: An air humidifier used for regulating humidity in indoor spaces, such as residential flats, and in which the humidity has been produced by vaporizing water in a vaporizer. The problem in existing air humidifiers is the constant need to add water and the need of other maintenance, such as cleaning. In the air humidifier of the invention, these problems have been solved in the way that the air humidifier is connected to the water mains by means of a pipe. The water flow entering the vaporizer can be controlled with the aid of a valve, and after the water inflow has been stopped by the valve the heat stored in the walls of the vaporizer and in the electric resistance dries the vaporizer, while at the same time burning out the impurities in the vaporizer.

Abstract: A sawing machine having rollers which laterally guide a log and feed it upon a transporting chain between and under rollers to sawblades of the saw machine, such as circular saws or a band saw. Above the log there in a staying chain which stays the log by means of staying spikes acting on the log's surface. The feed chain below the log carries supporting members which support the log at a plurality of points and maintain its unchanged position relative to the sawblades, and are particularly useful for sawing crooked logs to avoid uneven and unaesthetic saw cuts.

Abstract: A device for feeding a tree trunk with lateral and vertical centering into a machine processing round timber. Heretofore, the feeding of the log into the machine has taken place manually, which is exceedingly heavy work. The invention comprises a feed gutter and a spring wheel both serving as points of support, at least one feed wheel, and opposite thereof a carrying wheel.

Abstract: A saw machine with one or more saw blades for ripping a log, after which are provided one or more parting knives. The problem occurring in saw machines of prior art is that the spacing of the fixed guiding points working the log, as viewed in the direction in which the log is being sawn, becomes so large that curve-sawing is no longer possible. The saw machine of the invention is characterized in that both the saw blades (7) and the parting knives (8) are located in a separate sawing unit (6) articulatedly attached to the frame (9) of the saw machine and thereby following the crookedness of the log (11).

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.