Abstract: A stump grinding device includes a wheel having an outer peripheral edge in which a plurality of recesses are formed. Disposed in each recess is a plurality of cutting units each including a block affixed to a floor of the recess, and a bit mounted in the block. Each bit includes a hard tip disposed at a front end thereof. The bits of some of the peripheral cutting units are rotatable relative to their respective blocks, with the hard tips thereof being generally pointed. The bits of others of the peripheral cutting units are non-rotatable to their respective blocks, with the hard tips thereof forming elongated cutting edges. The peripheral cutting units are spaced from leading and trailing ends of the respective recesses to provide spaces for the passage of cuttings.

Abstract: A method and apparatus for clamping a knife. A front side of the knife includes a recess and the knife is clamped between an outer clamping member adapted to receive the back side of the knife, and a inner clamping member adapted to receive the front side of the knife, the inner clamping member making contact with the front side of the knife at two spaced locations thereon, wherein at least one of the locations is outside the recess and the other is inside the recess, wherein the width of the recess normalized by the overall width of the knife yields a result that is preferably no more than about 0.22.

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: 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: A stump grinding wheel includes a wheel member having a plurality of receiving brackets. Each receiving bracket includes a cutting tool channel. A cutting tool is received in each of cutting tool channel. Each cutting tool includes an elongated shaft having a base end and a distal end, and a cutting tip at the distal end. A stop is defined on the elongated shaft between the base end and the distal end and is configured so that it permits gauging of the distance between each receiving bracket and a respective cutting tip.

Abstract: A method and apparatus for reducing the size of wood members, particularly pan-shaped wood members known in the industry as “lilypads”, such that the orientation of the fibers of the lilypads are encouraged to be substantially perpendicular to the longitudinal and rotation axis of a cutting drum having a plurality of cutting members extending from its circumferential surface.

Abstract: The invention relates to an industrial waste crushing bit capable of sufficiently exerting wear resistance from the initial stage of service and improving the service life at low cost. A super-hard member to be inserted in an opening formed in the tip of a bit body is formed into a plate shape and is secured to the bit body in such a manner that the plate faces of the plated-shaped super-hard member are placed in a direction virtually orthogonal to the rotational direction of the bit, with its side being exposed.

Abstract: A stump grinding tool includes a rotary cutting wheel having a pair of side surfaces and an outer peripheral surface. Cutting assemblies are mounted on the cutting wheel, each cutting assembly including first and second pockets disposed on respective side surfaces of the wheel. Each pocket includes a leading through-hole and a trailing through-hole aligned with respective leading end trailing through-holes of the other pocket for receiving a pair of cutting teeth. Each tooth extends through aligned through-holes of the pocket and cutting wheel in mutually opposite directions, wherein cutting elements of the teeth are disposed adjacent respective ones of the side surfaces. Each tooth is fixed by a nut threaded thereon such that each tooth and associated nut functions to clamp both of the first and second pockets against the respective side-surfaces of the cutting wheel.

Abstract: Cutter head for wood working machines comprising a carrier with at least one receptacle for detachably receiving a cutter unit and a means for adjusting the flight circle of a cutting edge of the cutter unit, wherein in order to facilitate such a cutter head in view of the manufacture and installation thereof and to improve the resharpening ability of the cutter unit, the adjusting means comprises at least one spacer arranged between the cutting edge and the receptacle in an exchangeable manner and defining the distance between the cutting edge and a bearing surface of the receptacle.

Abstract: A stump cutting tool for use with a stump cutting apparatus having a rotatable cutting wheel or drum having at least one cutting tool mounted to the wheel or drum. The cutting tool includes a tool holder or pocket used to secure a separate cutting tooth. The pocket or tool holder includes the least one bore extending therethrough for use in securing the cutting tool to the cutting wheel or drum.

Abstract: A cutting tool device for a wood planing machine includes a driving shaft having a cylindrical portion and a plurality of insert receiving channels. Each of the channels includes a knife seat wall surface and an abutment wall surface, which confine an accommodating cavity therebetween. The knife seat wall surface has left and right end edges respectively having left and right secant points at a respective junction with an outer wall surface of the cylindrical portion. The left secant point lags behind the right secant point in a counterclockwise operating direction. A planing knife is disposed to abut against the knife seat wall surface. A tightening insert member is inserted into the accommodating cavity, and has front and rear wall surfaces respectively abutting against the planing knife and the abutment wall surface to thereby clamp the planing knife firmly in the respective channel.

Abstract: A replaceable cutting piece and a cutting arm for a debarking cutter for a debarking machine of a hollow-rotor type, which cutting piece (6) and cutting arm (4) comprise supporting surfaces and abutment surfaces for receiving loads acting on the cutting piece fastened by a retaining screw to a housing (7) formed in the cutting arm. In order to direct the loads acting on the cutting piece in full to the cutting arm instead of to the retaining screw, the cutting piece and the cutting arm comprise supporting surfaces and abutment surfaces (9a to 9d, 11a, 11b, 12a, 14a, 14b) for receiving the loads acting on the cutting piece in the direction of the axle, the radius and the tangent of the rotor and the torque caused by said loads, which surfaces are situated in perpendicular planes with respect to one another.

Abstract: A manual planing machine, has a planer shaft having at least one longitudinal slot, an elongated flat planer knife clamped in a detachable manner in the and formed as a dual-cutting mini reversible tip with at least one cutter and with a back groove extending parallel to the cutter and with a holding rib on a side of the longitudinal slot to prevent an intentional detachment from the planer shaft, the planer knife carrying only one the cutter, extending in a corrugated manner in such a way that troughs of the cutter lie on a common first straight line having the same spacing relative to the back groove as a cutter of a mini reversible tip, while its crest lie on a common second straight line which extends 0.5-1.5 mm radially above the first straight line, the planar knife carrying a contact edge which is right-tangled and is flattened relative to a back, instead of another cutter at a side located opposite from the at least one cutter for support at the radial stop of the planar shaft.

Abstract: The present invention relates to a processing means for barking machines of the type having a plurality of swinging arms, each being at an inner end pivotally mounted on a rotatable, annular rotator, while at an opposite outer free end, they carry such a processing means and are actuated by a spring load which strives to pivot the outer end inwards to the axis of rotation of the rotator. The processing means comprises a front, a rear, an upper and a lower surface, which are designed in such manner that an edge serving as a processing edge is defined between the front and the upper surface. The, lower surface is formed with an engaging means which is adapted to engage a matching formation in a seat in the outer end of the swinging arm. The rear surface acts as a supporting surface which serves to abut against a corresponding swinging arm supporting surface which is directed forwards or obliquely forwards against the direction of feed of the logs.

Abstract: In a mounting arrangement for supporting, in a stepwise adjustable fashion, a cutting blade in a cutting head for working wood or plastic, the cutting blade has at least one cutting edge and opposite side edges with wave-like profile structures and claw elements are mounted on the cutting head and have engagement portions extending into the troughs of the wave-like profile structures for form-fitting engagement therewith. Each wave-like profile structure has a greater length in the direction of the side edges of the cutting blade than the respective engagement portions of the claw elements so that the position of the cutting blade is adjustable.

Abstract: A router guide apparatus for use in forming rosette designs in a work piece includes a frame having a work surface with a wheel rotatably mounted upon the work surface. The wheel has a plurality of position stops. The rosette design can be formed in a synthetic material (eg. Corian®) and filled with a filler or glue or settable material of a different color to form an inlaid design. The frame includes an adjustable guide for holding and a tracking a router with a cutting blade. The frame includes stops for limiting movement of the router during use. The guide and stops are configured to enable the cutting blade to cut two petals of a rosette design in a single pass. Inserts (fence blocks and/or router filler blocks) can be added to vary the position tracked by the router. The wheel is affixable into multiple angular positions relative to the guide so that multiple cuts can be made at different angular orientations relative to one another.

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 disposable carbide cutting blade assembly for a universal rotary molding cutter head. The assembly comprises a disposable carbide blade blank having its cutting surface contoured to the desired configuration, a smooth rear, bottom, and front surface, and a hole extending through the carbide blade blank. The carbide blank is positioned against a steel backer plate, which in turn is provided with a ledge for supporting the carbide blank from below, and a smooth front surface against which the rear surface of the carbide blank rests when in position. A safety pin protrudes from the front face of the steel backer plate, and extends into the hole within the carbide blank to properly seat the carbide blank against the steel backer plate. The rear surface of the steel backer plate is provided corrugations along its entire height for mating with the corrugations on the inner wall of a slot of a universal rotary cutter head.

Abstract: A finger joint cutting tool includes unitary finger joint cutter bits. Each cutter bit has a unitary body to provide several integrally formed finger cutting teeth for finger jointing wood materials. Preferably the body is formed by an electrical discharge machine (EDM) process to provide the cutting teeth without any pinchpoints between teeth. The cutter bit therefore does not include several separate stacked knives to provide the cutting teeth. The finger joint cutting tool includes a head having a predetermined axis of rotation. The head has a plurality of locating surfaces spaced radially about the head which receive the finger joint cutter bits at a constant diameter. Each cutter bit is unitary and has a planar cutting face capable of being sharpened. The cutting face includes a plurality cutting teeth having linear fingering edges extending radially between adjacent base and tip edges. Each of the base edges are located at the same radius relative to the axis.

Abstract: A planer-type face milling machine for processing wood having a drive motor that is coupled to a work spindle, which supports, on a free end, a milling head, which on its front side supports cutting edges, the milling head being configured particularly as a disk-shaped body, running parallel to the workpiece surface, the milling cutting edges being supported by a cutter, particularly a planar one, furnished with main and secondary cutting edges, and removably arranged on the milling head, is configured as a particularly effective and-tool machine in that the planer-type face milling machine is correspondingly small and light and has a housing having a handle, the milling head supporting a cutter without a main cutting edge and having only at least one secondary cutting edge.

Abstract: A two piece improved stump grinding tooth comprising a one piece cutting tooth having a hardened cutting bit, preferably made of tungsten carbide, or another material having hardness properties similar thereto, fixedly attached to the body portion of the tooth through brazing or other attachment process. The tooth body and tip are positioned at predetermined angles to improve the cutting characteristics of the tooth as it engages and removes material from a stump, and are held in the proper cutting position on the grinding wheel by a pair of mounting blocks through which the tooth body is secured to the grinding wheel.

Abstract: A planer (10), in particular a hand held planer for machining wood, with a planer housing (12), which includes a planer shaft (20), supported rotatably in at least one direction with an outer contour (23), which in a longitudinal groove (46) has at least one planer blade (21), which is braced on a centrifugal wedge (56) that can be prestressed with a spring (54) or the like can be produced more simply and economically in that the centrifugal wedge (56) is fastened to the planer shaft (20), elastically movably relative to it, in captive fashion solely by the spring (54), in particular being removable without destruction, and substantially without touching the planer shaft (20).

Abstract: A method and apparatus for reducing the size of wood members, particularly pan-shaped wood members known in the industry as "lilypads", such that the orientation of the fibers of the lilypads are encouraged to be substantially perpendicular to the longitudinal and rotation axis of a cutting drum having a plurality of cutting members extending from its circumferential surface.

Abstract: A rotary cutter head is provided having body shape characterized, generally, outwardly-shifted cylinder segments to shift cutter head weight and force to the knife blades and to balance and extend the knifes from the central core of the cutter head while reducing workpiece waste buildup along the knife front, and while decreasing clogging of knife mounting components and reducing over-heating of knives and with securing corrugations on the knife cutting face, engageable with corrugations on the cutter head for securing the knife base against a foot on the cutter head.

Abstract: A woodworking shaper head having a plurality of cutting blades mounted about the periphery thereof. Each cutting blade is mounted in a longitudinally extending channel in the surface of the head, and a gib of wedge shape is disposed in the channel to securely retain the blade. The forwardly facing side wall of the channel and the adjacent surface of the blade include intermeshing corrugations which resist withdrawal of the blade during operative rotation of the head.

Abstract: The plane head for the hand-held planing machine includes a cylindrical base body (11) made from a group of identical stamped sheets (18) arranged axially next to each other and each provided with a punched hole (150) so as to form a base body cavity (15); a planing knife (14) protruding radially beyond an outer surface of the base body (11) from a longitudinal groove (13) and fixed therein by a form-fitting connection or form-locking connection so that the planing knife cannot be radially dislodged from the base body; and a chuck wedge (16) received in the base body cavity (15) so that the planing knife (14) is clamped in the base body (11) by centrifugal force during rotation of the plane head.

Abstract: A machine for shaping curved wooden molding includes an arbor mounted on a housing for receiving a cylindrical workpiece formed from four lengths of curved molding blanks, a drive for rotating the arbor, and a pivot arm carrying a blade at the top end thereof for movement towards and away from a workpiece mounted on the arbor, whereby, when the top end of the pivot arm is rotated towards the arbor, the blade engages the rapidly rotating workpiece to shape the latter.

Abstract: A self aligning knife clamping assembly and machine incorporating the same are disclosed. In one embodiment there is provided a knife clamping assembly having an upper clamping component, a lower clamping component and a fastening device, such as a bolt, therebetween, to permit the clamping components to be releasably clamped together onto a knife element having a knife edge. Positioned between the knife element and the clamping assembly is a biasing element, which urges the knife element to enter, or remain in, a preferred position prior to the knife element being immovably clamped into place. In the preferred embodiment the biasing element is in the form of an elastomeric strip.

Abstract: A grinding apparatus for grinding a stump or the like includes a frame, a rotating member supported by the frame, and a plurality of grinding members mounted to the rotating member. The grinding apparatus further includes a first driver which selectively rotates the rotating member about a drive axis, and a second driver which selectively pivots the rotating member about a vertical pivot axis whereby the rotating member pans between at least a first lateral position and a second lateral position. The grinding apparatus preferably further includes a third driver which selectively pivots the rotating member about a horizontal pivot axis whereby the rotating member moves between at least a first vertical position and a second vertical position.

Abstract: Disclosed herein is a new kind of veneer which has the cross grain (such as wavy grain and interlocked grain) artificially formed on the surface of straight-grained veneer cut by quarter sawing from a species of wood which should yield the cross grain but actually has no cross grain. Disclosed also herein is a method of producing the cross-grained veneer, said method comprising cutting wood into veneer of desired thickness which assumes the straight grain, by using a veneer peeling machine equipped with a knife whose cutting edge waves continuously in the lengthwise direction, and flattening the veneer having an uneven surface by means of thermal fixing or hot pressing, thereby artificially forming the cross grain on the surface of the straight-grained veneer. The knife is constructed such that the cutting edge waves in the widthwise direction of the knife and the troughs of the wave are disposed along the straight line extending in the lengthwise direction of the knife.

Abstract: A cutter tooth assembly for impingement of a material (e.g., a stump, wood, brush or earth strata). The assembly attaches to a driven member (e.g., a rotatable wheel). The assembly includes a cutter tooth which has an elongate body with a leading end and a trailing end, as well as a hard insert at the leading end of the tooth. The assembly also includes a pocket which has a base portion and a holder portion. The pocket attaches to the wheel at the base portion thereof. The cutter tooth is retained to the pocket at the holder portion thereof. The base portion of the pocket has a leading surface and a trailing surface. The cutter tooth is retained by the holder portion of the pocket so that the hard insert extends circumferentially past the leading surface of the base portion of the pocket.

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 free-swinging cutter for use on a machine adapted to cut and clear brush and trees, including a generally stirrup-shaped member having two opposing sidewalls, a leading face with a cutting edge for cutting, and a rearward face opposite the leading face. The cutter is adapted to be swingably mounted at a point offset from its center of mass so that the cutting edge is disposed below the rearward face to form a relief heel. The invention also includes a method of creating a relief area on a cutter swingably mounted on the rotating drum to improve chip flow, which includes the steps of providing a cutter as described above and swingably mounting the cutter to a drum about an axis offset from the cutter's center of mass so that the cutting edge is disposed below the rearward face when the cutter extends radially from the drum following the rotation of the drum.

Abstract: In a profiled inserted-blade cutter, with blades (13) which can be re-sharpened without altering the profile and trajectory, each blade (13) is secured to a blade holder (14) having a base with a T-shape cross section, one arm (16) of the transverse section of which engages in a first longitudinal groove (4) in the basic unit (2). The other arm (17) engages in a second longitudinal groove (5) also in the basic unit (2) and open towards the first groove (4). The flanks of the first and second longitudinal grooves (4, 5) at a greater distance from the central longitudinal axis of the basic unit (2) lie in planes which are mutually parallel and parallel to the longitudinal axis of the basic unit and each form a positioning surface (6, 7) for one or other arm (16, 17) of the transverse section. On the blade holder (14) there is a clamping surface (15) which encloses a radially outwardly opening angle with the frontal surface (13') of the blade (13) and an acute angle with the adjacent positioning surface (7).

Abstract: Disclosed is knives for slicers used to slice a veneer 3A which is composed of a flat base steel 1 and a flat edge steel 2 brazed to the base steel 1. The base steel 1 is formed of ferritic stainless steel including improved steel such as SUS 430 (16 Cr-18 Cr) and the edge steel 2 is formed of alloy tool steel, high speed tool steel including improved steel of SKH or a material corresponding to high speed tool steel. With this arrangement, the stain of a veneer caused by the rust of the knives can be prevented and the durability of the knives can be improved.

Abstract: A chip slicer has pivotably mounted chip-forming knives located so that the knife edges are in a plane which passes through the axis of rotation of the knives, as well as through the axis of pivoting. Another improvement is to employ a knife which has a blade which is bent at an obtuse angle to form a first and a second leg. The first leg has a cutting edge and an upper surface which defines a chip path. The second leg is bent with respect to the first leg in the direction of rotation of the knife ring. The knives are mounted to the ring by clamping wedges which are bolted to the knife ring so that they overlie the second leg and so clamp the knife blade by the second leg to thereby substantially remove obstructions from the chip path. A further improvement has chip depth gauges which are positioned in front of the knife edges. The depth gauges have trailing edges in the direction of rotation which extend substantially parallel to the upper surface of the blades.

Abstract: A sawmill that is a compact integrated unit of a multiplicity of components all mounted on a common frame for performing different functions to produce pieces of lumber from a log. Logs can be processed that have a minimum diameter of approximately 2" and a minimum length of approximately 42" with the overall length of the mill being approximately 17'. There are a number of power driven feed and guide rolls that propel a log endwise along a fixed path. The processing components include first and second pairs of chipper canter units with novel chipper heads, a pair of rabbet units in which each has a pair of cutter heads on concentric telescopic shafts and power driven rolls for off-feeding pieces of lumber of differing widths. The log feed speed and/or chipper head speed can be varied to provide chips of selected different lengths. Positioning of the processing units is controlled by a programmed processor unit.

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: The invention concerns a cutter head, in particular a planing cutter head, whose blade carrier (1) has at least one mounting (5), facing radially outwards, for a blade (7). Fitted in each mounting (5) is a wedge grip (17) which can be moved relative to the blade carrier (1) and which presses the blade (7) against a stop (9) on the mounting (5) when moved with at least a component of motion radially outwards. Located between the blade (7) and the wedge grip (17) is a mounting strip (21) which can be moved relative to the wedge grip (17) and the stop (9) on the mounting (5) and which releases the blade (7) for removal radially outwards when the wedge grip (17) is displaced inwards.

Abstract: One or a plurality of machined timber elements of complimentary first and second configuration wherein each element is characterized by having at least one face surface (1,2) and one abutment surface (3,4) wherein said abutment surface incorporates in said first configuration an elongate undercut slot or female dovetail (5) and in said second configuration incorporates a correspondingly shaped, undercut elongate protuberance or male dovetail (8) and said abutment surface is not orthogonal in relation to said face surface such that said first timber element configuration and said second timber element configuration are adapted for co-operative engagement to effect the joining together of a first timber element incorporating said first timber element configuration with a second timber element incorporating said second timber element configuration whereby the undercut slot of said first timber element interengages with the protuberance of said second timber element to form a self locking joint.

Abstract: A router bit and method for cutting predetermined configurations in a workpiece. The router bit includes a body portion having an axis of rotation, a radial extent about the axis, and a longitudinal extent, and a shank member includes a shank to be retained in the rotating machine, with the shank extending along the axis and being formed integrally with the body. A first pair of cutter elements are mounted on the body diametrically opposed to each other, and each of the first pair of cutter elements has a cutting edge which extends generally radially. A second pair of cutter elements is mounted on the body in generally diametrically opposed relation to each other and circumferentially spaced from the first pair of cutter elements, and each of the second pair of cutter elements has a cutting edge extending generally longitudinally.

Abstract: A rotatable debarking drum for removing the bark from logs comprises a cylindrical member and a plurality of axially extending rows of debarking tools circumferentially distributed on an inner circumference of the cylindrical member. Each row of debarking tools includes a plurality of axially spaced-apart arcuate ribs extending transversally relative to the cylindrical member axis. The discontinuous axially extending rows of debarking tools arrangement contributes to increase the efficiency of the overall debarking operation.

Abstract: A debarking knife includes a plate having at least one sharp debarking edge delimited by a leading face and a trailing face. The leading face is reinforced by an anti-abrasion hard surface coating having better anti-abrasion qualities than the substrate forming the plate. The anti-abrasion hard surface coating is preferably a mixture of grains of fused tungsten carbide bound by an Ni/Cr/B/Si alloy, the whole being brazed to the substrate using a laser beam.

Abstract: An improved debarking apparatus, which includes a substantially, cylindrically shaped debarker head having a plurality of cutting blades to form its out peripheral surface, the debarker head mounted on a central shaft so that it may rotate freely on the shaft during the debarking process. In a first embodiment, the improved assembly would incorporate a pair of depth control bearing collars, mountable on an existing pillow block bearing, the bearing collar incorporating an adjustable shoe which includes an arcuate lower surface for making contact with the bark of the log that is being debarked, so as to select the precise depth of cut into the bark by the cutting blades of the debarker head.

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: A tractor driven stump grinder for a wheeled tractor frame having a drive motor operating the wheels to move the tractor forwardly and rearwardly, the tractor having a support member movable vertically on the tractor frame and rotatably carrying a generally vertically disposed broadsidely oriented grinder disc. A series of circumferentially spaced generally radial stump grinding tools project peripherally from each vertical face of the grinder disc, and a drive mechanism is provided for rotating the grinder disc in a plane transverse to the longitudinal tractor frame as it cuts a horizontal swath and then a subjacent swath in a pass across the upper end of a stump in both forward and rearward directions of movement of the tractor.

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: The invention relates to a knife assembly for slicing woodwool, comprising a knife with a chip surface (1), a clearance surface (2) and a cutting edge (3), defined by the intersection between both surfaces. The knife assembly is characterized by guiding ribs (4) extending perpendicularly to the cutting edge (3) and joining the chip surface (1) with an end (5) that substantially coincides with the cutting edge (3) and with the guiding surface joining said end and rising there towards. The guiding ribs (4) can be formed integrally with the knife.

Abstract: A depth-of-cut bushing is mounted above a cutter-arm array to provide a cutting head mounted on a rotary lawn mower or mower/trimmer. The bushing is shaped so that it acts together with the cutter-arm array to accomplish control of the cutting action. This control enables chipping of stumps or roots at the low horsepowers available with lawn mowers or mower/trimmers.

Abstract: A rotary chipping head with multiple knife structures distributed about its periphery. Each knife structure includes an end-located chipping knife with a cutting edge movable in a plane disposed perpendicular to the axis of rotation of the chipping head. End-located facing knives are interspersed with the knife structures for producing a smooth face in the work being processed. Anvils preceding the facing knives produce compression in the work being processed. Detachable facing elements mount the facing knives and the anvils.