Abstract: A two-part blade support base for mounting a chipper knife to a chipper disc wherein the parting line between the upper part and lower part is substantially parallel to a plane defined by the chipper disc. The parting line incorporates a vertical step which transmits shear forces which would cause the upper part to move outwardly of a chip receiving surface. A screw or bolt connects the upper and lower parts of the blade base. The upper part of the blade base may be constructed of a wear resistant material.

Abstract: A knife and apparatus for clamping the knife. The knife has front and back sides that, preferably, both include interlocking features adapted for interlocking engagement with corresponding inner and outer clamping members, to prevent slippage of the knife from the clamping members in orientations wherein the knife rests thereon in the chipping apparatus when the knife is unclamped. Preferably, the interlocking feature of the back side of the knife includes a semi-cylindrical groove, and the interlocking feature of the front side of the knife includes two spaced-apart deflector ridges. Preferably, the interlocking feature of the outer clamping member is a projection having a semi-cylindrical tip portion wherein the semi-cylindrical shape is preferably half-cylindrical, and wherein the projection extends from an inner surface of the outer clamping member sufficiently far that most of the back side of the knife does not make contact therewith.

Abstract: A wood chipper knife holder assembly for a power driven rotor head has at least one opening in its wood confronting surface for the knife holder assembly which includes a mount block. A counter-knife receiving surface opposite the wood confronting surface of the rotor head is provided on the mount block for a counter-knife and a reversible knife blade is received on the counter-knife. A clamp member secures to clamp the knife in a projecting cutting position. The clamp member and knife have transversely spaced openings and pins which permit 180° repositioning of the knife to present a fresh knife cutting edge, and the clamp member has a transverse surface for receiving the rearward cutting edge of the knife.

Abstract: Apparatus for processing logs to manufacture wood chips. The apparatus includes a circular disc for passing a series of blades through a chipping station and a chute and spout assembly for feeding logs from a conveyor into the chipping station. A lifting mechanism is mounted for rotation upon a shaft which is situated adjacent to but outside of the chute and spout assembly. A drive unit is arranged to turn the shaft so that the lifting mechanism is rotated between a retracted position outside of the flow described by the chute and spout assembly and an extended position inside the chute and spout assembly whereby the lifting mechanism can contact logs within the assembly and move the logs contra to the direction of flow.

Abstract: The present invention provides a canter chipper head that comprises a rotor suitable for rotation about a rotation axis. The rotor has a lateral side and a frontal side, and includes a first cutting assembly and a second cutting assembly that are each mounted to the rotor. During rotation, the first cutting assembly defines a first lateral cutting surface around the rotation axis, and a first frontal cutting surface that is generally transverse to the rotation axis. The first lateral cutting surface and the first frontal cutting surface perform a primary cut in a log. The second cutting assembly defines a second lateral cutting surface around the rotation axis, and a second frontal cutting surface that is generally transverse to the rotation axis. The second lateral cutting surface and the second frontal cutting surface perform a secondary cut in the log that is deeper than the primary cut.

Abstract: A comminuting unit of a comminuting machine for comminuting material has a plurality of knife carriers with a longitudinal axis. The knife carriers are arranged along a comminution path of the comminuting unit and have a leading longitudinal edge. The knife carriers are aligned with the longitudinal axes transversely to the comminution path and parallel to one another. The knife carriers have an axis-parallel slicing knives arranged at the leading longitudinal edge. The slicing knives have a cutting edge extending at a predetermined angle and a predetermined projecting length into the comminution path. Axial passage slots are formed between the knife carriers allowing passage of material comminuted by the slicing knives such that a rearward longitudinal edge of a preceding knife carrier and the slicing knife of the following knife carrier together define the axial passage slot in the form of a guide channel.

Abstract: A method is provided for reconditioning after rehardfacing the wear plates that are used on the mounting face of the knife disc of a disc chipper so that the original dimensions of the wear plate are substantially restored. Also, a wear plate is provided which is reconditioned in accordance with the method. A rear side of the wear plates is machined to incorporate at least one additional groove and into the grooves made on the wear plate rear side are affixed machining allowance strips, whereupon the allowance strips can be machined as required to restore the thickness dimensions of the wear plate.

Abstract: Apparatus for processing logs to manufacture wood chips. The apparatus includes a circular disc for passing a series of blades through a chipping station and a chute and spout assembly for feeding logs from a conveyor into the chipping station. A lifting mechanism is mounted for rotation upon a shaft which is situated adjacent to but outside of the chute and spout assembly. A drive unit is arranged to turn the shaft so that the lifting mechanism is rotated between a retracted position outside of the flow described by the chute and spout assembly and an extended position inside the chute and spout assembly whereby the lifting mechanism can contact logs within the assembly and move the logs contra to the direction of flow.

Abstract: A two-part blade support base for mounting a chipper knife to a chipper disc wherein the parting line between the upper part and lower part is substantially parallel to a plane defined by the chipper disc. The parting line incorporates a vertical step which transmits shear forces which would cause the upper part to move outwardly of a chip receiving surface. A screw or bolt connects the upper and lower parts of the blade base. The upper part of the blade base may be constructed of a wear resistant material.

Abstract: The present invention provides a stump grinding apparatus. The apparatus includes a rotatable wheel, a plurality of blocks each having an inner side attached to a side of the rotatable wheel, and a plurality of teeth each individually received within a groove formed on an outer side of the block. Fasteners pass through a base portion of the teeth and thereby hold the teeth to the blocks and the blocks to the wheel.

Abstract: A milling tool for machining wood, synthetic materials or the like, has at least one cutting edge disposed on the milling tool, a chip chamber for receiving chips disposed directly in front of the cutting edge in a direction of rotation or a gap that is connected to a tool cavity inside the tool and that in turn has an axial ejection slot for evacuating the chips. The chip chamber or the gap form an opening for the evacuation of chips, the opening extends approximately perpendicular to a cutting plane formed by the cutting edge and the direction of cutting, wherein the opening has a cross section that is bigger than a projected surface of a chip that is separated by the cutting edge during a cutting operation.

Abstract: An analog-to-digital converter for converting an analog input signal to a digital output signal is described. The ADC includes a comparator circuit having first to nth stages of comparators responsive to the analog input signal. Each comparator includes a plurality of magnetoelectronic devices for performing comparison function. Each magnetoelectronic device has one or more ferromagnetic elements capable of being switched into a first or second magnetization states. The amplitude of analog input signal upon exceeding a predetermined threshold level (IS or VS) of a respective magnetoelectronic device sets a magnetization state of the respective magnetoelectronic device to the first state and the resulting output of the respective magnetoelectronic device to a HIGH state, and vice-versa. In one embodiment, the magnetoelectronic device is a Hybrid Hall Effect device. In another embodiment, the magnetoelectronic device is an isolator.

Abstract: Single-edged wood chipper blades which can be repeatedly removed from a wood chipper and sharpened, as needed, to prevent the need for disposing of multiple conventional blades over a prolonged period of repeated use. Each of the replaceable blades typically includes a blade mount base for engaging a rotary chipping head of the chipper, a clamp plate for engaging the blade mount base, and a blade body interposed between the blade mount base and the clamp plate. A blade edge is shaped in the front end of the blade body, and extends from between the blade mount base and the clamp plate. A blade babbitt is provided in the rear end of the blade body. Accordingly, the blade body can easily and repeatedly be removed from between the blade mount base and the clamp plate and sharpened, and again secured in place between the blade mount base and the clamp plate, as needed for optimum and economical operation of the chipper over a prolonged period.

Abstract: The present invention relates to a wood-milling cutter. A circular cutter head includes a plurality of semicircular engaging grooves at the rim thereof for receiving a plurality of hilts with corresponding arched surface. A semicircular screw hole is formed in the middle of the top rim of the semicircular engaging grooves. A blade is received at the bottom of said hilt. A semicircular cavity corresponding to the semicircular screw hole of the cutter head is provided in the middle of the top of the hilt and equipped with an annular flange. Therefore, the semicircular screw hole and the semicircular cavity form a full circular hole to receive a trimming screw with an annular groove in the middle thereof. The annular flange of the semicircular cavity is engaged in the annular groove of the trimming screw while the threaded member of the trimming screw joins the semicircular screw hole of the semicircular engaging grooves.

Abstract: A wood processing device having a spinning wood processing head having one or more spaced apart knives mounted on said spinning head for processing wood. The knives, upon contacting said wood, form a curved cut surface in said wood being processed. At least one limit surface is adjustably mounted between said one or more knives on said spinning head, said limit surface being sized and shaped to limit abnormal movement of said wood during processing. An adjustor for adjusting a position of said limit surface is provided to permit said limit surface to limit abnormal movement of said wood over a range of operating conditions. In a preferred embodiment the limiter is curved. A method of adjusting a wood processing head is also disclosed.

Abstract: A knife and apparatus for clamping the knife. The knife has front and back sides that, preferably, both include interlocking features adapted for interlocking engagement with corresponding inner and outer clamping members, to prevent slippage of the knife from the clamping members in orientations wherein the knife rests thereon in the chipping apparatus when the knife is unclamped. Preferably, the interlocking feature of the back side of the knife includes a semi-cylindrical groove, and the interlocking feature of the front side of the knife includes two spaced-apart deflector ridges. Preferably, the interlocking feature of the outer clamping member is a projection having a semi-cylindrical tip portion wherein the semi-cylindrical shape is preferably half-cylindrical, and wherein the projection extends from an inner surface of the outer clamping member sufficiently far that most of the back side of the knife does not make contact therewith.

Abstract: A cutter head, especially a chipping cutter head for chip forming timber machinery, is disclosed together with a knife and knife holder therefor. The cutter head, with a basic cutter head body, has at least one knife mounting area with holder contact surfaces inclined in a V-shape. At least one knife is detachably fixed to the respective knife mounting area by a fixing screw with the knife bearing with knife contact surfaces inclined in a V-shape against the holder contact surfaces. The fixing screw retains the knife on the knife mounting area by means of a retaining force acting in the area between the contact surfaces inclined in a V-shape.

Abstract: An improved wood pulverizer is provided with a rotating disc studded with a plurality of curved tapered hammers. One or more anvils is secured to the pulverizer with the anvil having teeth and slots located adjacent the surface of the disc. The hammers of the rotating disc pass through the slots of the anvils as the disc rotates to tear and shard wood into bits and pieces for subsequent use or processing. The anvils of the present invention are formed with two or more useable surfaces so that the anvils can be removed, rotated, and replaced to present fresh cutting surfaces to the disc. Further, the anvils are formed by a series of bolted together anvil segments to allow replacement of only single segments in the event of damage. Improved chip sizing grates are also provided with the grates having replaceable reversible gullet liners and grate rings formed by ring segments that together define a grate liner. Rotor rings are provided in some embodiments.

Abstract: A wood chipping method and a disc chipper provided with knives (4). The chips (11), after having separated from a log (3), pass through a chip opening (12) in the disc (1) and hit an impact surface (10) located after a knife. Along different portions of the knife (4), a stronger impact effect is caused in proximity to the centre than in proximity to the outer periphery of the disc. The direction of the impact surface (10) deviates more from the direction of the rear surface (15) of the knife in proximity to the centre of the disc than in proximity to the outer periphery of the disc. The distance of the connecting line between the rear surface (15) of the knife and the impact surface (10) from the cutting edge (16) of the knife can be longer on the outer periphery of the disc than in the centre of the disc.

Abstract: A system for converting wood products into viable base construction materials consisting of a support structure, a central structure consisting of a low speed, high torque, hydraulic motor which drives a central drive shaft to which a planing table is rotatably attached. Four or more feed chutes are radially attached to the outer supports and the logs are sliced over eight blades arranged on the planing table. An alternative embodiment consists of a rotary cutting device where logs are fed to cutting blades rotating below.

Abstract: A chip and method for producing wood pulp. First, second and third pairs of substantially parallel sides are formed by cleaving, cutting and cutting, respectively. The sides of the second pair of sides are cut by a first knife so as to be spaced between about 2 to 8 mm. The sides of the third pair of sides are cut by a second knife so as to be spaced a greater distance apart than the first pair. The sides of the first pair of sides are cleaved substantially along the grain direction so as to be spaced also a greater distance apart than the sides of the first pair. The sides of the third pair of sides are cut so as to be substantially perpendicular to the sides of the first pair of sides.

Abstract: A wing knife holder for a chipping head includes a plinth for releasable mounting of the knife holder to the chipping head hub, a cantilevered member mounted on the plinth, the cantilevered wing inclined rearwardly and radially outwardly, from an inner end of the member support on the plinth to a cantilevered outer end of the member opposite the inner end. The leading edge of the member is forwardly swept in the direction of rotation of the chipping head from the inner end to the outer end so as to advance the outer end ahead of the inner end. A chip flow passage is formed in the plinth, radially inwardly of the leading edge between the hub and the leading edge. The chip flow passage slopes from an inner opening adjacent the peripheral edge of the hub rearwardly and radially inwardly toward the axis of rotation of the chipping head.

Abstract: An improved wood pulverizer is provided with a rotating disc studded with a plurality of curved tapered hammers. One or more anvils is secured to the pulverizer with the anvil having teeth and slots located adjacent the surface of the disc. The hammers of the rotating disc pass through the slots of the anvils as the disc rotates to tear and shard wood into bits and pieces for subsequent use or processing. The anvils of the present invention are formed with two or more useable surfaces so that the anvils can be removed, rotated, and replaced to present fresh cutting surfaces to the disc. Further, the anvils are formed by a series of bolted together anvil segments to allow replacement of only single segments in the event of damage. Improved chip sizing grates are also provided with the grates having replaceable reversible gullet liners and grate rings formed by ring segments that together define a grate liner. Rotor rings are provided in some embodiments.

Abstract: Method and apparatus for preventing or releasing a blockage occurring in a flow of tree trunks supplied to a wood chipper via a feed hopper and for securing an uninterrupted flow of timber to the chipper. At least one lifting arm is insertable to project through an opening defined in a hopper. The lifting arm is inserted to raise tree trunks wedged in the hopper and release blockages. The duration of the lifting arm insertion is controlled momentarily for limiting the amount of tree trunks supplied to the chipper.

Abstract: A disk chipper includes a bedknife, the bedknife having opposing first and second surfaces, and a chipper frame, the chipper frame having an opening for receiving the bedknife, the opening being defined by opposing first and second surfaces for facing the first and second surfaces of the bedknife, respectively. The disk chipper further includes a wedge, the wedge being movable in a first direction between the second surface of the bedknife and the second surface of the chipper frame to move the first surface of the bedknife in a second direction substantially perpendicular to the first direction toward the first surface of the chipper frame. A method for fastening a bedknife to a disk chipper is also disclosed.

Abstract: A disc for a disc chipper which is adapted to rotate upon a chipper shaft is provided with a number of tools for producing chips and includes two or more sector-shaped blocks.

Abstract: The invention concerns a knife disc arrangement of a disc chipper, said arrangement comprising a rotating knife disc (1), knives (3), wear plates (4) and supporting strips (11) supporting the wear plates. The invention also concerns a hinge strip acting as a supporting strip (11) for the wear plate. The knives are supported against the direction of rotation of the disc by fitting the base edge (9) of the knife against a supporting surface (10). The supporting surface (10) supporting the base edge of the knife (3) is located in the supporting strip (11).

Abstract: A tool wheel rotatably mounted in a disc chipper. The tool wheel includes a plurality of chip outlets. Each chip outlet comprises an elongated aperture extending through the tool wheel. At least one of the ends of the chip outlet is integrally made in the basic material of the tool wheel in a beveled fashion relative to the center axis of the tool wheel.

Abstract: The invention relates to a process and apparatus for producing veneer strips of predetermined length, width and thickness from wood. The apparatus has a severing tool for dividing the wood to be machined into boards, a clamp for clamping the boards, and a machining device for machining the clamped boards into veneer strips.

Abstract: A hood assembly for wood chipper includes a housing and a cutting assembly partially disposed within the housing. The hood assembly also includes a first hood partially enclosing the cutting assembly and fixedly connected to the housing and a second hood pivotally connected to the housing and having a closed position covering the cutting assembly and an open position extending away from the cutting assembly. The hood assembly further includes a removable hood pin to secure the first and second hoods together in the closed position and a hood pin plunger assembly connected to the first hood and cooperating with the hood pin and having a bent handle to allow an operator to actuate the hood pin plunger assembly to remove the hood pin after the cutting assembly has stopped rotating to move the second hood to the open position.

Abstract: A process and apparatus for manufacturing wood chips as raw material in the production of mechanical pulp in order to reduce energy consumption. The process includes irreversibly deforming a plurality of fibers of at least one piece of wood in a direction perpendicular to the longitudinal axis of the fibers. The wood fibers include summerwood fibers. The irreversible deformation is accomplished through mechanical treatment. The apparatus used includes one or several tools arranged so that the forces created during the process act in a direction substantially perpendicular to the longitudinal axis of the fibers so as to irreversibly deform the fibers across the grain.

Abstract: An improved system for clamping and retaining a cutting knife in position in an apparatus for processing wood. The apparatus includes a support surface, a cutting knife, an associated holding location on the support surface to receive the cutting knife, and a clamp member having a clamping surface to engage and hold the at least one cutting knife in the associated holding location. The improvement involves mounting the clamp member to the support surface at a pivot joint for pivotal movement of the clamp member with respect to the support surface. The clamp member has a clamping surface that extends on one side of the pivot joint and a lever arm extending on the other side of the pivot joint. An actuating member is provided to apply a force to the lever arm so that a clamping force is applied to the cutting knife through the clamping surface according to the principle of a first order lever. The pivoting clamping arrangement provides secure and reliable clamping of the cutting knives.

Abstract: A method of increasing the durability of the cutting point (8) of a blade, and a blade. A compression stress (P.sub.10) is formed in at least one surface (10 or 6) joining the point (8) of the blade (1) by cold working the blade.

Abstract: The invention concerns a tool head for shaping machine designed to machine the side segments of tree trunks. The tool head has a rotationally driven main body (1) with several groups of chipper blades (2, 3) round its circumference. The front chipper blade (2) in each group and a front-mounted finishing tool, e.g. a segment (4) of a circular-saw blade, are mounted on a common tool carrier (5). The tool carrier (5) is detachably attached to the tool-head main body (1) and is held in place by clamps (16). If, as a result of wear, it becomes necessary to replace a tool, the tool carrier is replaced after the clamp (16) has been loosened.

Abstract: An improved knife holder for a chipper disc. A knife holder for holding a knife has a first clamping portion and a second clamping portion for clamping the knife therebetween. One of the clamping portions pivots about a pivot point for clamping the knife and for releasing the knife so that it may be easily removed from the knife holder. In the relative position of the clamping portions in which the knife is clamped and in their relative positions in which a space is opened up around the knife permitting its removal, the clamping portions are rigidly disposed with respect to one another.

Abstract: A method and a feeding chute for feeding logs (10) into a disc chipper by means of the gravity. The logs (10) are supported laterally by means of adjacent bottom portions (31, 32) of the chute (3) and shoulders between those. The logs are turned parallel with the longitudinal direction of the chute by means of a moment (M) which occurs when the direction of the main axis (27) of the ellipse forming the shearing surface of the log deviates from the direction (27') perpendicular to a the direct line (30) drawn via the rotating center (28) of the blade disc and the center (29) of the ellipse. The bottom portions (31, 32) of the chute are inclined around a longitudinal axis in such a way that from two adjacent bottom portions of the chute, the one (31) further away from the rotating axis of the disc forms a bigger angle (.beta.') with respect to the horizontal plane than the angle (.beta.") formed by the portion (32) closer to the rotating axis.

Abstract: A wood-chipping machine (FIG. 1) has a plurality of cutters carried by a flywheel which is rotated to move the cutters across a throat through which material to be chipped is fed, and in which each cutter is substantially frust-conical and hence circular and a plurality of such cutters form a blade at a generally radial location of the flywheel. These facilitate blade replacement in the event of wear eg by adjusting the worn cutter angularly.

Abstract: An apparatus (10) having a rotating fiberizing disc (26, 226 or 326) for fiberizing wood blocks (100) to produce fibrous elements is described. The apparatus includes a housing (12) within which is mounted the disc. The disc is provided with a series of rows (32, 232 or 332) of teeth (28, 228 or 328) on the front planar face (26A, 226A or 326A) as well as a scraper (30, 230 or 330). The wood block is advanced to the face of the disc in a manner such that its long grain direction can be controlled at various angles with respect to the path of the circularly travelling teeth and thereby changing the nature of the resulting fibrous elements.

Abstract: An improved wood pulverizer is provided with a rotating disc studded with a plurality of curved tapered hammers. One or more anvils is secured to the pulverizer with the anvil having teeth and slots located adjacent the surface of the disc. The hammers of the rotating disc pass through the slots of the anvils as the disc rotates to tear and shard wood into bits and pieces for subsequent use or processing. The anvils of the present invention are formed with two or more useable surfaces so that the anvils can be removed, rotated, and replaced to present fresh cutting surfaces to the disc. Further, the anvils are formed by a series of bolted together anvil segments to allow replacement of only single segments in the event of damage.

Abstract: A method for mounting a wear plate and a knife base on a disc chipper's disc, and a disc chipper. The wear plate (6) rests against the knife base (4) via two counter surfaces (12), one of which forms in the wear plate (6) a groove in parallel to the knife (3) and the other forms in the knife base (4) a ridge which can be fitted into this groove. The tightening force of the fastening bolts (17, 18) of the wear plate (6) presses the knife base (4) against the disc (1) by means of the wear plate via these counter surfaces (12).

Abstract: The invention relates to an apparatus for producing sideways curved wood wool fibers. The apparatus comprises a flat rotatable disc (2), in the surface of which is provided at least one knife assembly (7) comprising a thickness knife (8) which projects slightly above the surface of the disc (2) and which has a cutting edge extending substantially radially and further comprising width knives (9) positioned as seen in the direction of rotation of said disc (2), ahead of said thickness knife (8) and having a cutting edge extending substantially tangentially. The width knives (9) are positioned in the immediate vicinity of the thickness knife (8), whereas their cutting edge may engage the thickness knife (8). Further the apparatus is provided with at least one feeding device (5) for feeding the disc (2) with wood blocks (6) to be cut up into fibers. Further a run-up guide may be positioned ahead of the width knives.

Abstract: A wood chipper knife holder assembly for a power driven rotor head has at least one opening in its wood confronting surface for the knife holder assembly which includes a mount block. A counter-knife receiving surface opposite the wood confronting surface of the rotor head is provided on the mount block for a counter-knife and a reversible knife blade with cutting surfaces along opposite transverse edges is received on the counter-knife. A clamp plate secures to clamp the knife in a projecting cutting position. The counter-knife has at least one pair of spaced apart pin openings and the knife blade has at least one pair of complemental pin openings, and pins are received in the knife blade openings and counter-knife pin openings to permit 180.degree. relocation of the knife.

Abstract: The invention is meant for a cant forming arrangement of the kind with at least two rotational chipping heads with a basic cut off conical form where they each have a basic conical main surface and a small end, whereby the chipping heads are arranged in pairs with the small ends turned opposing one another and equipped with replaceable knives which are arranged on the respective chipping head's main face with the purpose to surface a log on two opposing sides, through length feeding of a log between the chipping heads, while they are rotating, and that the wood which is removed is made directly to chips by the knives.

Abstract: A method for improving the endurance of a blade base (6) of the disc (1) of a disc chipper, a blade base and a disc chipper. A wearing plate (10) is attached to the surface (18) of the blade base facing towards the chip opening (7), the wearing surface (10) of which is shot peened.

Abstract: A mechanized disc flaker for producing curled wood flakes having a rotatable disc plate, and one or more cutting knives mounted to the disc plate so as to provide for a slight "rake angle" defined in accordance with the invention as the angle made between the tool face and a plane perpendicular to the direction of tool travel. In a preferred embodiment, the apparatus includes rotatable and removable knife holders which permit the rake angle and the "cutting angle", defined in accordance with the invention as being the angle the cutting edge of the knife makes with the grain of the wood, to be modified to yield curled wood shavings having different geometries and characteristics. The preferred method of practicing the apparatus involves using a work piece having a certain moisture content which is directed against the work surface of the disc flaker using appropriate pressure all to provide for wood curls of desirable characteristics.

Abstract: A method for adjusting the blade clearance in a disc chipper by moving in the axial direction a bearing bushing of a disc shaft together with the bearing. The axial movement of the shaft is effected by loosening adjusting screws or adjusting nuts of one of the end caps of the axial guide bearing housing and by tightening after this the adjusting screws or adjusting nuts of the other end cap. The cap then pushes the axial guide bushing and the attached shaft in the axial direction by way of a guide projection on the surface of the cap facing towards the bearing. An axial guide bearing system includes a shaft supporting a blade disc of a disc chipper, with the shaft and blade disc being movable relative to a counter blade in an axial direction. The system also includes a bearing housing frame and a bearing fixed to the shaft and movable with respect to the bearing housing frame.

Abstract: A method of crushed ground-wood processing comprises charging the input between two relatively revolving and displaced conical surfaces with simultaneous dimension separation variation by circulating vibrations causing the surfaces to apply variable squeezing pressure and lateral or normal forces to effectively compress and rub the bark from the wood surface.

Abstract: The invention relates to a knife system for a machine used in wood chipping, a knife (10), a guide component (14) and a filler part (24) and method of exchanging knives. The system comprises at least one turnable or at least two exchangeable guide components (14), where at least two guiding surfaces are mutually at different distances from the guide component surface supported on the disc.

Abstract: An anvil for a wood chipper includes an anvil body having a top surface, a bottom surface, and longitudinally extending side surfaces between the top and bottom surfaces. At least one of the side surfaces is adapted to accept an insert shaped and dimensioned to fit into the adapted side surface of the body. Means within the body for firmly holding the insert in contact with the adapted side surface are also provided. The insert presents a leading edge functioning as the anvil's leading edge.

Abstract: An improved knife holder for a chipper disc. A knife holder for boding a knife has a first clamping portion and a second clamping portion for clamping the knife therebetween. One of the clamping portions pivots about a pivot point for clamping the knife and for releasing the knife so that it may be easily removed from the knife holder. In the relative position of the clamping portions in which the knife is clamped and in their relative positions in which a space is opened up around the knife permitting its removal, the clamping portions are rigidly disposed with respect to one another.