Abstract: The invention concerns a method for clamping a knife of a disc chipper, wherein the knife is pressed from the knife disc via knife a clamp against a wear plate in a diagonal position (?) with respect to the plane of the knife disc with a compressive force (N) substantially parallel with the axis of the knife disc. According to the invention, the compensating force of the force directed to the knife clamp, caused by the diagonal position (?) of the knife and transversal to the compressive force (N) is exerted to the wear plate.

Abstract: A tool-shaft locking device for a planing machine is connected with a second end of the tool shaft having a first end connected with a belt wheel, including a bearing base, a locking rod, a spring and a locking button. The bearing base has a sidewise hole, two opposite deep position grooves at an upper and a lower side of the hole and two opposite shallow grooves at a right and a left side, and the locking rod has a first threaded end tightly engaging a center threaded hole of the locking button, which has two opposite position projections possible to be fitted tightly in the deep grooves so that the inner end of the locking rod may insert in one of position holes of the tool shaft body so as to lock the tool shaft immovable. Then a planing knife fixed on the tool shaft with bolts can be adjusted in its position, conveniently by easily screwing off the bolts.

Abstract: A router includes a motor housing containing a motor and coupled to a tool holder configured to receive a tool bit that is driven rotationally by the motor. A base receives the motor housing for movement in an axial direction along a longitudinal axis of the motor housing. A depth adjustment mechanism enables adjustment of a position of the motor housing relative to the base along the axial direction. The depth adjustment mechanism has a threaded shaft rotationally coupled to one of the motor housing and the base and a thread engaging member coupled to the other of the motor housing and the base. The threaded shaft is engageable with the thread engaging member. A seam defined in the base adjacent to the depth adjustment mechanism.

Abstract: Systems for orienting strands and/or other types of particles are provided. The systems may have tabs which extend from orienting disks and/or collars and/or spacers which may be disposed on shafts. The tabs may prevent accumulation of strands between disks utilized within an orienting system. For example, the tabs may contact strands and/or other particles and guide or force the particles to be moved past the disks toward successive disks, or onto a screen or conveyor line.

Abstract: A blade, blade holder, and blade tool head is provided. The blade holder includes a mounting surface for a cleaver and an adjacent inclined mounting surface for a flat blade and blade fixing elements for detachably fixing the blades to their mounting surfaces. The blade mounting surfaces have holder contact surfaces with a V-shaped cross-section, and the blade fixing elements directly fix the blades, each of which has corresponding inclined V-shape contact surfaces, to their respective mounting surface, with a retaining force that acts between the inclined V-shaped contact surfaces. The blade has on its lateral side an oblique bearing region, which permits both blades to lie flat against one another.

Abstract: The router bit includes an upper and a lower cutter, axially aligned and separated by a fixed longitudinal displacement. No substantial portion of the bit extends beyond the lower end of the lower cutter. In some embodiments, the lower cutter may be configured with bottom face blades to allow the router to be used as a plunging bit. The cutters may use wing blades or spiral blades. The portion of the bit intervening between the upper and lower cutters may also be configured as a cutter. In some embodiments, the router bit is integral. In other embodiments, it comprises separate elements that may be axially secured.

Abstract: A self-propelled stump cutting apparatus which also functions as a tow-behind type, resultant of a telescoping tongue hitch. The apparatus is narrowed in width, while in work mode with tow wheels suspended above ground by removing the detachable tow wheel assemblies. Self-propulsion is accomplished by the employment of a unique, retractable, hydraulically motivated tractor axle assembly. This assembly is located on a hinged sub-frame attached to the apparatus main frame. The tractor axle assembly is forcibly positioned and locked by way of a mechanical assembly which is motivated by the vertical movement of the hydraulically maneuvered cutting wheel boom. A major additional feature is the novel direct coupling of the cutting wheel driving hydraulic motor to the cutting wheel axle shaft. This is accomplished by the employment of a compact, self-aligning internal shaft coupling which eliminates commonly used costly and inefficient belt drive systems.

Abstract: A ring saw includes a disc body having a circumferential edge with a first circumferential bearing groove. A cutting ring is mounted for rotation about the circumferential edge of the body. The cutting ring has an inner annular surface that carries both a circumferential gear profile and a second circumferential bearing groove. Ball bearings are positioned in side by side relation in a circumferential bearing race defined by the first circumferential bearing groove and the second circumferential bearing groove. A circumferential seal is provided between the body and the cutting ring, which is adapted to prevent abrasives from entering into the bearing race and interfering with ball bearings. At least one driving gear is carried by the body and engaged with the circumferential gear profile to impart rotational movement to the cutting ring.

Abstract: A planing head, cylindrical body for a planing head and a method of manufacture thereof are provided. The planing head includes a cylindrical body having an axis of rotation, an outer surface around the axis of rotation, and opposite first and second end faces. A plurality of blade assemblies is arranged along the outer surface. A plurality of grooves is provided in the outer surface and each groove is configured to receive a respective one of the plurality of blade assemblies. A hydraulic pressure system for supplying a hydraulic pressure to each of the blade assemblies is provided. The hydraulic pressure system includes a plurality of transverse channels for receiving a pressurised hydraulic fluid and a plurality of oblique channels hydraulically linking the plurality of transverse channels. Each transverse channel extends at least partially through the cylindrical body.

Abstract: A cutterhead for use with a power tool includes a generally cylindrical body with a knife recess extending generally parallel to an axis of the body. The knife recess has a wall at an acute angle to a tangent of the outer surface. Received in the knife recess are a knife and a bar that includes an angled side configured to sandwich the knife between the angled wall of the recess and the angled side of the bar. A pin extends from the bar and is received in an aperture of the knife to align the knife relative to the bar. A threaded height adjustment screw is received in a threaded bore in the bar to adjust a height of the knife with respect to the body. A securing screw is received in a threaded opening in the body to secure the bar and the knife to the body.

Abstract: A tool-shaft locking device for a planing machine is connected with a second end of the tool shaft having a first end connected with a belt wheel, including a bearing base, a locking rod, a spring and a locking button. The bearing base has a sidewise hole, two opposite deep position grooves at an upper and a lower side of the hole and two opposite shallow grooves at a right and a left side, and the locking rod has a first threaded end tightly engaging a center threaded hole of the locking button, which has two opposite position projections possible to be fitted tightly in the deep grooves so that the inner end of the locking rod may insert in one of position holes of the tool shaft body so as to lock the tool shaft immovable. Then a planing knife fixed on the tool shaft with bolts can be adjusted in its position, conveniently by easily screwing off the bolts.

Abstract: A rotary shaper tool for use in conjunction with a power tool used to rotate the shaper tool in which a cutter panel is formed about a cylindrical framework. The cutter panel is formed with rows or sets of cutter teeth and an array of vent holes. Chips formed by the engagement of the spinning cutter panel with a wooden workpiece pass to the interior of the shaper tool and are ejected from the vent holes remote from the area of engagement.

Abstract: A device for adjusting a sawing device's width, wherein the sawing device comprises at least two circular blades 10, 12, facing each other and adjacently positioned, and a fastener 44 adapted to assemble the blades together. The device for adjusting the sawing device's width comprises a wavy annular spring 14 provided between the blades, a recess 42 provided in each of the blades, wherein the recesses are positioned opposite to one another and wherein said wavy annular spring is received within the recesses, an adjustment member 32 adapted to force the blades together against said wavy annular spring or to part them so as to maintain a predetermined distance between the blades. The distance between the blades is set to present a desired cutting width.

Abstract: A circular saw including an annular disk-shaped base adapted to be driven about an axis of rotation, a plurality of tip supports formed along the outer circumference of the base integrally therewith so that a gullet is defined between adjacent ones of the tip supports, a plurality of tip inserts respectively fixed to the tip supports, a plurality of openings formed through the base on substantially the same circumference of a circle so as to be equally spaced apart from each other in the circumferential direction of the base, and a plurality of wiper tips respectively fixed to wall surfaces defining the openings on the downstream side of a rotational direction of the base. Each wiper tip has a front surface formed as a concave surface in cross section.

Abstract: An apparatus having adjustable saws for wood cutting. A cutting head has at least two spaced apart disk-saws for producing respective slicing cuts in an article of wood, the saws defining respective distinct outer cutting diameters. Preferably, the disk-saws are bolted to the cutting head and spaced apart therefrom adjustable amounts by interdisposed control plates of predetermined thicknesses. Preferably, a first one of the disk-saws defines an annular ring having an inner diameter, and the outer cutting diameter for the first disk-saw is greater than the outer cutting diameter of a second one of the disk-saws. The outer cutting diameter of the second disk-saw is then less than the inner diameter of the first disk-saw, so that the second disk-saw is nested inside the first disk-saw while remaining axially displaceable therefrom.

Abstract: A cutting device includes a rotatable base defining a plurality of closed-sided, tooth sockets. A plurality of tooth assemblies are mounted within respective sockets. Each tooth assembly includes a tooth holder having a base-engaging portion adapted to fit into the socket, and a cutting tip projecting from the rotatable base for engaging and cutting an object.

Abstract: A heavy flywheel disc having a radially spaced apart array of pockets in which are mounted knives. Short logs, which have been de-barked, are fed in with their long axis parallel to the face of the flywheel. A hydraulic ram translates the logs sideways into the plane containing the rotating knives. The use of the hydraulic ram provides for a variable infeed speed to obtain the particular thickness of shavings which provides in the end commercially desirable shavings for use, for example, in horse stables. The knives have notched cutting edges. The notches limit the width of each shaving to create strands which are for example ¾ inches wide. The strands are then chopped in an automated chopping device such as a forage harvester to produce shavings.

Abstract: A cutter head for wood planing machine comprises elongated slots, wedges and blade retainers of a cooperative configuration that allows the blade retainers to be positioned in the slots with the wedges overlying the blade retainers. The wedges may be shifted upwardly and away from a base portion of the associated blade retainer to urge the blade retainer toward a blade to clamp the blade in the slot. Magnets may be used to loosely hold the blade in place for adjustment of blade height or to tighten the blade retaining assembly comprising the associated wedge and blade retainer. In addition, the base of the blade retainer may be retained in the slot by one or more magnets.

Abstract: A knife assembly and chipping knife therefor. The knife assembly includes a knife, and employs an upper clamping member and a lower clamping member for clamping the knife therebetween. The knife has an elongate axis and two spaced apart cutting edges parallel to the elongate axis and defining a first reference plane. The knife is further defined by a plane of reflective symmetry that is perpendicular to the first reference plane and which contains the elongate axis. The knife has a front side and a back side spaced from the front side. The front and back sides terminate in the cutting edges. A deflector ridge projects from the front side and reaches a point of greatest maximum projection of the knife from the first reference plane, the point lying in the plane of reflective symmetry.

Abstract: An apparatus and a tool for chipping material are provided. The apparatus includes chipping tools arranged relative to one another inside a housing, whereby the chipping tools are constructed planiformly, and are arranged on carrier elements along a drum-shaped, disk-shaped, or ring-shaped chipping path. The chipping tools rotate relative to one another by rotating about an axis of rotation, and are each divided by a division line based on their thickness into a core area, which faces the carrier element, and a utilization area, which is positioned opposite of the chipping tools. The chipping tools have at least one bore, formed perpendicular to the division line, the bore extends across the utilization area and ends at the division line between the core area and the utilization area.

Abstract: A coping bit capable of being easily modified to cut profiles having tenons of varying lengths is provided. The coping bit includes an axially extending primary drive shaft and a first cutting member fixed on the primary drive shaft. An axially extending secondary drive shaft having an upper and a lower portion is removably mounted on the primary drive shaft for rotation therewith, and a second cutting member is mounted on the secondary drive shaft in spaced relation to the first cutting member when the secondary drive shaft is mounted to the primary drive shaft.

Abstract: A cutting tool for a stump cutter device, having a holder and at least one cutter insert unit, wherein the cutter insert unit has a cutter head and a shank, and wherein the cutter insert unit can be connected with the holder by its shank. To achieve a simple and cost-effective tool exchange, along with the simultaneous low wear of the contact faces, the shank of the cutter insert unit respectively has at least a tapering shank section and at least a widened shank section. The holder has a recess with protrusions corresponding to the tapering shank section and an undercut area corresponding to the widened shank section and thus provides a positive connection between the shank and the holder.

Abstract: A cutting tool holder, a cutting bit, and a retainer maintaining the cutting bit at a prescribed position relative to the tool holder. The cutting bit is received in a slot located in a first lateral surface that extends through the top surface. The retainer is received in an opening included in the first lateral surface that intercepts the slot. The retainer includes a planar tapered surface that contacts an upwardly and laterally facing oblique surface on a lower end of the cutting bit to hold the lower end of the cutting tool in contact with a lower surface of the slot.

Abstract: A rotary cutter includes: an elongated shaft that defines a rotation axis and that has two opposite mounting ends, and at least one axially extending blade-mounting surface parallel to the rotation axis and extending between the mounting ends; a pair of blade-aligning members, each of which is mounted on a respective one of the mounting ends of the shaft, and each of which is formed with at least one protrusion; at least one blade attached to the blade-mounting surface and having two opposite end portions, each of which is formed with a recess that receives the protrusion of a respective one of the blade-aligning members; and a fastening plate and screws for fastening the blade to the shaft.

Abstract: A plane-blade adjusting device for a planing machine includes a blade shaft, a plurality of plane blades, plural covers and plural eccentric tubular posts. The blade shaft body is provided with plural set flat surfaces for each plane blade to rest on and then each cover secured on the plane blade and screwed tightly. The eccentric tubular post has an eccentric rotary portion formed in an upper portion, fitting in the rectangular hole of each plane knife and secured tightly on the shaft body for sandwiching a plane blade on the shaft body. So the eccentric tubular post is rotated to shift each plane blade up and down in a micro-distance with easiness, quickness and accuracy.

Abstract: The method of forming timbers especially for use as webs in timber roof trusses comprising feeding timbers in a predetermined path with the timbers extending transversely to the direction of feed and, as the timbers are so fed, shaping the ends thereof to rounded form, and apparatus for carrying out said method comprising conveyors for feeding the work, a saw for cutting the timbers to length, and cutters for the end shaping.

Abstract: A rotary cutter includes: an elongated polygonal shaft that defines a rotation axis, that has blade-mounting surfaces parallel to and surrounding the rotation axis, and that is formed with blade-aligning studs for aligning a blade, the blade-mounting surfaces being equidistant from the rotation axis, two adjacent ones of the blade-mounting surfaces defining an angle therebetween, the angles defined by the blade-mounting surfaces being equal; blade-fastening plates, each of which is attached to and cooperates with a respective one of the blade-mounting surfaces of the shaft to define a blade-receiving gap therebetween for receiving the blade; and fastening screws for fastening the blade to the respective one of the blade-mounting surfaces of the shaft.

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 knife for a disk chip cutting machine which is mounted between a carrier part and a clamping part and which includes a chip breaking surface extending into an opening adjacent an outer surface of the carrier part. The chip breaking surface includes a concave portion which terminates in a rib which extends outwardly and downwardly with respect to an interface between the knife and the carrier part with the concave portion being oriented to direct cut chips in a direction away from the outer surface of the carrier part during use.

Abstract: The invention is a planing cutter with a cylindrical cutter body (1) with recesses (3) along its enveloping surface. Each recess is delimited by a front wall (4), a rear wall (5) and a bottom (6) and contains a cutting element (7). Each cutting element (7) has a cutting edge (8), a lower edge (9), two lateral edges (10,11), a front face (12) and a rear face (13). One clamping device (2) is also located in each recess. According to the invention each lateral edge (10,11) of the cutting element (7) has a range (14) of grooves. At least one groove in each range interacts with a peg (17,18) protruding from one of the walls (4,5) of the recess (3). The invention also concerns a cutting element (7) for use with the cutter of the invention.

Abstract: The invention relates to a grinding element, which comprises a substantially planar fastening frame, and where two or more grinding segments made of grinding ceramic material are fastened to the outer surface of the frame by means of bonding agent. The fastening frame preferably comprises at least one fastening hole, and a fastening bolt is supplied through the hole to fasten the grinding element to the frame of the grinder stone. The invention further relates to a grinder stone, where a grinding surface is formed by arranging a required number of grinding elements according to the invention on the outer circumference of the stone's frame.

Abstract: The wood plug trimmer is a devise used in conjunction with a hand held grinder that permits expeditious trimming of wooden plugs that are used to cover screws in wooden objects. The wood plug trimmer will have an interior cylindrical shape that will slide over the shank of a hand held grinder. The interior diameter of the wood plug trimmer will be slightly smaller than the exterior diameter of the shank of the hand held grinder and slightly shorter in length than the length of the base of the shank of the hand held grinder to the tip of the grinding die. This will permit the wood plug trimmer to be adjusted so that the grinding die will be flush with the wood surface. The wood plug trimmer will have a plurality of pilot/waste ports that will be wider than the wooden plugs to be trimmed. When in place the wood plug trimmer will have the wood plugs pass through the pilot/waste ports and permit the grinding die to trim the wooden plug flush with the surface.

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: An apparatus for chipping material, particularly wood, includes a plurality of knife carriers are arranged around a mutual axis that form the boundaries of a cutting chamber while forming a comminution path. On the knife carriers, the slicing knives, under inclusion of a cutting angle &dgr;, are detachably attached to the comminution path. The blades of the slicing knives uniformly project into the cutting chamber. To adjust the cutting angle &dgr; so as to adapt it to the prevailing conditions, a control element for determining the cutting angle &dgr; is detachably arranged between the slicing knives and the knife carriers.

Abstract: A tree cutting attachment for a skid loader or other types of self-propelled work vehicles to be used at construction and landscaping sites. The device is used to cut down brush and trees of up to about 12 inches in diameter. The tree cutting attachment is made up of a motor driven rotor assembly which is journaled within a frame of the attachment. The rotor assembly comprises a cage-like mounting system having pockets in which tempered steel blades, approximately ten inches in width are bolted in a side-by-side relation. Two rows of blades are mounted 180 degrees apart proximate the periphery of a rotor comprised of a series of parallel, generally circular plates that are welded to longitudinally extending rods. The knife blade elements are bolted to the blade holders with the non-sharpened end of the blade elements abutting a flat steel bar that forms part of the cage.

Abstract: A tool for machining workpieces of wood, plastic material, or the like has at least one plane head provided with cutting knives and having a first end and a second end. A first surface milling cutter is arranged on the first end of the plane head. At least one second surface milling cutter is connected to the plane head and is adjustable relative to the first surface milling cutter. The plane head has at least one axial guide for the second surface milling cutter. The axial guide is a fitting groove provided in the mantle surface of the plane head. The second surface milling cutter has a feather key engaging the fitting groove.

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 cutting tool for a stump cutter device, having a holder and at least one cutter insert unit, wherein the cutter insert unit has a cutter head and a shank, and wherein the cutter insert unit can be connected with the holder by its shank. To achieve a simple and cost-effective tool exchange, along with the simultaneous low wear of the contact faces, the shank of the cutter insert unit respectively has at least a tapering shank section and at least a widened shank section. The holder has a recess with protrusions corresponding to the tapering shank section and an undercut area corresponding to the widened shank section and thus provides a positive connection between the shank and the holder.

Abstract: A canter chipper head having a base member machine shaped from a unitary block of metal and having a truncated conical outer face terminating in an end face and at least two chip discharge though passages. There are a pair of cutter units mounted in respective ones of a pair of recesses adjacent each chip discharge opening. The recesses and outline of the cutter units match and are machined to a close tolerance fit to positively locate the cutter units on the base member. Each cutter unit has a cutting knife clamped between a pair of plates and each plate is secured to the base member with a threaded stud.

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: A debarking apparatus comprises eccentric debarking discs having a non-circular perimeter shape.

Abstract: A knife for a disk chip cutting machine which is mounted between a carrier part and a clamping part and which includes a chip breaking surface extending into an opening adjacent an outer surface of the carrier part. The chip breaking surface includes a concave portion which terminates in a rib which extends outwardly and downwardly with respect to an interface between the knife and the carrier part with the concave portion being oriented to direct cut chips in a direction away from the outer surface of the carrier part during use.

Abstract: An apparatus for producing an essentially wedge-shaped wood flake comprises a chipping tool rotating about a first, horizontal axis for chipping the flake out of the wood such that the flake has a first, concave surface and a second, convex surface. The flake is delimited between the surfaces. A circular saw blade is provided rotating about a second, vertical axis for removing wood in an area in which the surfaces intersect in an imaginary tip, prior to the chipping out.

Abstract: A lower plywood 2 and an upper plywood 3 which are set on a cylinder 1 are cut in two processes by use of a router to create a 1.4-mm-wide groove in the back of the lower plywood 2 and in the front of the upper plywood 3, thus a rotary cutting die which allows a 4-point (1.4-mm-thick) blade to be accurately inserted thereinto, a method for manufacturing the same, and a device for manufacturing the same are provided.

Abstract: A method and apparatus for planing an article of wood. Specifically disclosed is a cutting head adapted for rotation about an axis, and at least one elongate knife including a linear cutting edge for cutting the wood. The cutting edge terminates at opposite ends of the knife in respective tips. The knife is held by the cutting head so that each tip is rotated about the axis of rotation at the same fixed radius. However, the cutting edge is misaligned by a predetermined bias angle with respect to the axis of rotation. Where a plurality of the cutting heads are stacked or ganged together, preferably, the angle of misalignment for the knives of some of the cutting heads is reversed from the angle of misalignment for the knives of others of the cutting heads.

Abstract: An apparatus having adjustable saws for wood cutting. A cutting head has at least two spaced apart disk-saws for producing respective slicing cuts in an article of wood, the saws defining respective distinct outer cutting diameters. Preferably, the disk-saws are bolted to the cutting head and spaced apart therefrom adjustable amounts by interdisposed control plates of predetermined thicknesses. Preferably, a first one of the disk-saws defines an annular ring having an inner diameter, and the outer cutting diameter for the first disk-saw is greater than the outer cutting diameter of a second one of the disk-saws. The outer cutting diameter of the second disk-saw is then less than the inner diameter of the first disk-saw, so that the second disk-saw is nested inside the first disk-saw while remaining axially displaceable therefrom.

Abstract: An adjustable profiling head for a wood cutting apparatus. There is a first body portion for carrying a plurality of first knives and a second body portion for carrying a plurality of second knives. The cutting edges of the knives define respective cutting surfaces of revolution about an axis that have different mean diameters for the two body portions. In one aspect of the invention, the body portions are adapted to receive the respective knives by associated knife clamping mechanisms that are adapted to be removably mounted to the body portions with one or more first control plates therebetween, for adjusting the radial positioning of the knives. In another aspect of the invention, the body portions are adapted to be removably mounted to each other so that the body portions are disposed axially adjacent one another with one or more second control plates therebetween, for adjusting the relative axial positioning of the knives of one of the body portions with respect to the knives of the other body portion.

Abstract: The invention relates to a device and method for making tenons using an adjustable shim placed between cutting blades. The adjustable shim has a plate with a recess capable of accepting spacers of varied thicknesses and a cover that encloses any of the spacers placed in the recess. The thickness of the adjustable shim is adjusted by placing spacers in the recess to shim apart the cutting blades leaving between them a distance approximately equal to the desired tenon thickness.

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: 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.