Abstract: Disclosed is a shaper cutterhead utilizing an assembly that locates, captivates and firmly clamps two standard cutter bits that each include a hole designed to be engaged by solid lugs of a hub. Tee-slotted clamping collars that surround the hub slide laterally into place by engaging grooves in both bits and lock the bits rigidly when the machine spindle is tightened.

Abstract: A chipper for cutting uniform chips from a log having a rotating disc containing a plurality of radially disposed cutting stations, each having a knife assembly positioned adjacent a chip slot. Each knife assembly has an elongated cassette having a knife receiving recess formed in the top front surface thereof. A reversible knife is located in the recess by means of a key and is held in place by a retaining bar so that one cutting edge of the knife is accurately positioned at the entrance to the chip slot. Reversing the knife in the cassette after the first edge becomes dulled similarly positions the second cutting edge. Preferably, a plurality of knives are mounted end to end in the cassette.

Abstract: A wood cutting knife is provided for producing wood chips or flakes. The knife includes a central cutting member, and two wing members positioned on opposite sides of the central cutting member. The height of the wing members determines the depth of cut of the cutting knife, including the central cutting member. Also provided is a wood processing machine for supporting such cutting knives which includes a plurality of anvil members configured to interact intimately with the cutting knives. Also provided is a breakaway feature between the cutting members and a supporting surface defined by the wood processing machine. The supporting surface is relatively smooth, and the cutting knives are mounted to the surface by weldments. If a cutting knife encounters unprocessable foreign material such as metal or rock, the knife breaks away from the supporting surface at the weldment connection, and severe damage to the supporting surface or machine is avoided.

Abstract: Chipper apparatus including a rotating disc with one or more knives mounted on the disc operable to produce wood chips under the cutting action of the knives. Each knife comprises an elongate knife body bounded by opposed cutting edges. The knife includes a back side formed by back knife surfaces extending inwardly on the knife from its cutting edges and the back knife surfaces meeting with a bearing surface. The front side of the knife includes front knife surfaces extending inwardly on the knife from its cutting edges joining with an elongate key-receiving channel indented inwardly into the knife body. A knife is mounted on a rotatable chipper disc through a clamp member which bears against the bearing surface of a knife and a counter-knife which supports the front side of the knife and which includes an elongate key portion fitting within the key-receiving channel of the knife.

Abstract: Adzer bit assemblies (18) are of noncircular outer surface configuration and have a noncircular surface seated against a face (15) of similar noncircular shape to hold the assembly against rotation. When becoming worn, the adzing bit assembly can be loosened from the adzing head (99), and rotated to present a fresh cutting surface.

Abstract: A stump cutting tooth structure which includes a rotatable disc having a plurality of teeth in holding members spaced about the periphery there of, each holding member being formed of mating halves mounted upon opposite sides of the disc, the mating halves having open slots in their facing sides, the slots being parallel to the adjacent surface of the disc, the teeth having shank portions disposed in the slots and having head portions extending outwardly there of radially of the disc and being angled to diverge from one another and to be twisted axially of their shank portions outwardly of one another to have their cutting face portions each at an obtuse angle to their respective cutting directions whereby their cutting face portions slice into a stump in their cutting action instead of flatly inpacting the stump.

Abstract: An improved stump eradicating device which includes a manually operated carrier member and a rotatable shaft. A cutting wheel is mounted on the shaft and comprises a hub having at its lower end a plurality of slots. Cutting teeth are mounted in the slots and project radially outwardly for contacting a stump to be disintegrated.

Abstract: A three-edged tool (12) for a woodworking machine. The edges (18,19,20) of the tool are arranged with equal angular spacing about a tool body and protrude therefrom. In the surfaces (24,25,26) between the edges are recesses (27,28,29) so shaped as to retain the tool by mating engagement with a correspondingly shaped protrusion (30) provided on a tool carrier (10), and to act as a kerf in order to guide a break in case of overload of an edge (18) to the area between two recesses (27,28). Fastening means for the tool include a support part (14) provided on the tool carrier and a clamping part (15). The support part (14) carries the protrusion (30), which is shaped to engage in a recess (28) of the tool, and has a support surface (14') for supporting a clearance surface of an edge (19) which is inactive when the tool is mounted on the tool carrier. The clamping part (15) has a clamping surface (22) which is adapted to press against the clearance surface of the second inactive edge (20) of the tool.

Abstract: The present invention is a rotary machining tool and a method of making it using an easily replaceable cutter element assembly. A circular saw is exemplary of a cutting tool which can be made using the present invention. The cutter element assembly comprises two portions. The first is an inverted, generally U-shaped clevis with spaced apart side portions that fit over the circumferential edge of a sawplate. The clevis has an upper portion which extends outwardly from the sawplate edge thereby defining a tooth retaining socket between the sawplate edge and the clevis. The side portions of the clevis are apertured to accept a pin for attachment to the sawplate which has a corresponding aperture. A buttress attached to the clevis normally bears against the leading edge of a gullet and prevents rearward rotation when in use. The second member is an insertable tooth having a head and an elongated tapered shank. The shank has a taper on its upper surface sufficient to form a self-releasing taper, usually between 3.

Abstract: A power saw having a stationary, tree-supporting platform disc, a rotatable tree cutting disc and drive means for rotating the cutting disc. The saw cutting elements have circular, conical or concave cutting faces with circumferential cutting edges. The cutting elements are removably attached to the saw by means of holders which absorb forces imparted to the cutting elements and transmit the forces to the cutting disc. The holders facilitate rapid replacement of dulled or damaged cutting elements.

Abstract: The specification describes a stump chipping disintegrator wherein stumps are received in a trough having a rotatable chipping disc at one end and a powered ram plate at the other, the ram plate having diagonally extending penetrators. A stump stabilizer anvil adjacent the disc projects radially inwardly of the trough. The disc has steel, wood slicing blades at the radially inner portion thereof, mounted at a small acute angle to the face of the disc toward the direction of rotation, and carbide chopping blades at the radially outer portion thereof, mounted at a large acute angle to the face of the disc toward the direction of rotation. At least the carbide blades are mounted in special holders removable from the disc. The carbide blades have backup wedge elements that extend substantially the width of the blade at its outer end and extend substantilly to the radial outer edge of the blade.

Abstract: A debarking device comprising a debarking arm with a debarking tool mounted to the end thereof. The debarking tool has a curved bearing surface and the debarking arm is provided with a curved recessed seat for receiving the debarking tool. The bearing surface of the debarking tool and the recessed seat of the arm are provided with guides for allowing guided adjustments in the orientation of the debarking tool relative to the debarking arm. Further, the debarking device includes a fastener for retaining and locking the debarking tool at a desired adjusted orientation with respect to the arm.

Abstract: A waferizing apparatus having a rotatable disc. There are knife carriers mounted on the disc with spaced openings between the carriers. Openings in the disc correspond to the openings in the carrier and there is a knife associated with each opening. A knife clamp is bolted to the carrier to clamp each knife in position. Each knife clamp is urged resiliently inwardly against the carrier to clamp each knife in position in the apparatus. An expandable device can expand to separate the clamp and the carrier to permit removal of each knife.

Abstract: A chipper knife includes a pair of elongate blade portions integrally joined at a midplane which longitudinally bisects the blade. The blade portions are symmetrical and have inner and outer surfaces. The outer surface intersects the midplane at an acute angle and the inner surface intersects the midplane at a lesser acute angle. The inner and outer surfaces therefore diverge from each other as they extend outward from the midplane. The outer surface of each blade portion terminates in a cutting edge. A mounting for the knife is carried on a chipper disc and includes a base for supporting the inner surfaces of the blade portion with a cutting edge thereof disposed outwardly from the disc surface and a hold down plate engaging an outer surface of the blade to secure the knife to the mounting.

Abstract: The present invention is a knife assembly for a chipping canter or a mechanically similar device. In its basic form it comprises four parts: a knife holder, a knife, a knife retaining pull down block, and a tapered draw bolt to tighten the assembly. The knife holder is constructed to engage a conventional seat in a chipper head segment. It has an arcuate front surface to receive the knife element. The knife element has a rib on its rear surface which has a dovetail or T-shaped flange. The pull down block is similarly configured with a female dovetail or T-slot to grasp the rib flange on the back of the knife holder. A tapered bolt is threaded into the knife holder and passes through a similarly tapered hole in the pull down block. As the bolt is screwed into the knife holder, the pull down block and encompassed knife element are drawn to the rear where they are tightly frictionally held against the knife holder.

Abstract: A router tool and a cutting insert for transverse cutting of a work piece, preferably of fiber reinforced plastics. The router comprises a shank and a cylindrical router body having chip gullets and sites that have received cutting inserts. Each insert has a cutting edge which has a number of teeth extending in the rotational direction of the router. The inserts are staggered in the axial direction such that the router varying will present a right-handed cutting edge portion and a left-handed cutting edge portion whereby the work piece may be machined without producing defective burrs and fluffy fibers.

Abstract: The scraping edge of a debarking tool carried by an arm of a rotary ring barker is located lengthwise so that at least the major portion of the length of such scraping edge is located ahead of the longitudinally central portion of the leading face of the barker arm, and the leading edge of the debarking tool remote from the rotary ring is beveled by being inclined from the leading face of the debarking tool forward away from the barker ring.

Abstract: A device for use with a rotating cutting knife of a forage harvester to prevent the production of long cobs. The device includes a support member mounted on each cutting knife having a bevelled front face positioned to engage a cob face and support the cob in its longitudinal dimension as a knife cuts the cob along its lateral dimension. The support member is adjustably mounted on the knife between an operative position wherein the bevelled face of the support member is in substantially colinear relationship with the bevelled face of the knife and an inoperative position wherein the bevelled face of the support member is spaced from the bevelled face of the cutting knife.

Abstract: Disclosed is a sprocket cutter in which there is a cutter body having a plurality of pockets along its periphery and a plurality of wedge recesses facing the periphery within each pocket. There is an array of inserts disposed within each of the pockets, each of the inserts having a cutting portion and a plurality of wedges equal in number to the number of inserts and wedge recesses. Each of the wedges is interposed between each of the inserts and each of the wedge recesses so that, as each of the wedges is moved inwardly into its corresponding wedge recess, each of the inserts is securely clamped between its corresponding wedge and the pocket. Each of the inserts is positioned so that the cutting portion of each insert extends beyond the periphery of the cutter body. Each of the inserts cuts a segment of the sprocket contour as the cutter body rotates with adjacent segments of the sprocket contour being cut by inserts located in different pockets. There is also a method of assembling the sprocket cutter.

Abstract: A blade for use in shapers, planers, and the like for the shaping and surface finishing of wood. In contrast to prior art blade shapes wherein a sharpened cutting edge is scraped across the wood resulting in rapid wear of and damage to the blade, the present blade provides a cutting edge which enters the surface of the wood in a shallow chisel-like cutting action. The force on the point is along a line with maximum material behind it to prevent most damage to the cutting. The heel portion of the blade can provide a burnishing action on the surface of the wood so as to eliminate irregularities while, at the same time, resisting any frictional burning of the wood's surface.

Abstract: An improved wood processing apparatus which prevents clogging or fouling of the apparatus by providing a clear opening in the base of the apparatus for the passage of the pieces once cut, this area directing the pieces by gravity away from the drive mechanism. Additionally, the fully enclosed nature of the cutting hole eliminates the possibility of logs of too large a section being inserted into the cutting drum thereby stalling or fouling the cutting drum action.

Abstract: A tree felling head which includes a frame having a grapple mounted thereon with a grapple jaw which may be selectively opened and closed to respectively receive and grasp a standing tree and power means to selectively open and close the grapple; and a severing device mounted on said frame below said grapple for severing a standing tree. The severing device is a rim driven planar circular saw mounted around a peripheral portion thereof on an arm pivotally attached to the frame for movement in a plane transverse to the length of the standing tree, and included is a second power means for effecting rotation of said severing device.

Abstract: An improved cutter knife for wood chip producing apparatus includes two cutting edges intersecting at an angle of 521/2 degrees. This knife allows wood to be fed perpendicularly into a knife holding disc or drum requiring less space and less power for the production of the wood chips. The improved knife also produces chips of precise dimensions.

Abstract: The present invention is an improved heavy duty circular saw useful for tree falling in conjunction with mechanized feller/buncher equipment. The saw is characterized by ruggedness, easy field repairability, and safety of operation. It is constructed using a flat metallic saw plate of circular configuration. A series of flat segment members are attached around the periphery of the saw plate on each face. Each of these segment members has a plurality of buttress- or tooth-shaped tooth retaining portions on the outer periphery. These buttresses are formed with gullet-shaped spaces between them. The segment members are in an abutting end-to-end relationship on each face of the saw plate. Segment members on opposite sides of the plate are in a staggered configuration so that the abutting end portions of the members on one side are generally located opposite the central portions of the segment members on the opposite side. The tooth retaining buttresses on each side are maintained in an aligned relationship.

Abstract: A cutter block for a motor driven hand planer includes a roller body which is composed of two profiled bodies of equal cross section. The two profiled bodies cooperate with each other to grip a planing knife therebetween. Between the profiled bodies and a supporting shaft, centering spring elements are provided in respective recesses of the shaft. For tightening the profiled body and gripping of the interposed planing knives, shank screws are used which extend through the roller body. Perpendicular to the shank screws and parallel to the gripping surfaces of the profiled bodies are adjusting screws for transverse movement of the profiled bodies relative to each other and with respect to the shaft. Consequently, the position of the planing knife is adjustable.

Abstract: Device for use in connection with wood chippers of the type comprising a rotary disc (15) whereof one face is fitted with substantially radially positioned knives (1) which are attached thereto by means of knife holders (2) incorporating a log guiding surface. To give a twisted form to one face of the knife holders (2) the latter are fabricated by surface grinding of the log guiding face while the knife holder (2) is clamped in a grinding fixture (20) in a state of torsion which, after removal from the grinding fixture, gives the desired twisted shape to the log guiding face. After removal from the grinding fixture (20) the knife holder (2) is clamped in a torsion-free state in the chipping disc (15).

Abstract: A cutting tool and holder combination including a cylindrical tool having a cutting edge in at least one of its ends and at least one annular guide groove around its periphery. The tool holder includes a part-cylindrical recess in a tool carrier and a clamping device connected to the tool carrier. The clamping device includes a part-cylindrical surface adapted to be pressed towards the part-cylindrical recess, thereby clamping the tool between this surface and recess. The recess includes at least one part-annular guide ridge corresponding to the annular guide groove of the tool. Axial displacement of the tool is prevented by engagement of the ridge in the groove. Rotation of the tool may take place upon untightening of the clamping device.

Abstract: The adzing bit assembly includes a circular cutting bit with a circular edge formed by the merging of its flat face and its peripheral surface at an acute angle. A cutting bit shield abuts and covers the face of the cutting bit and extends to a diameter substantially equal to the diameter of the cutting edge, so as to shield the face and the cutting edge of the cutting bit. The cutting bit is fabricated from harder material than the cutting bit shield, so that the cutting bit shield wears away during use and the circular cutting edge of the cutting bit is progressively exposed.

Abstract: A knife assembly for a disc type wood chipper for cutting wood chips from a log, for example, comprises a pair of knife holding means between which a multi-section two-edged reversible knife and an associated counter knife are releasably clamped. One surface of the knife has two spaced apart sets of indented (female) serrations with an intermediate land between the sets which engage two spaced apart sets of protruding (male) serrations and a corresponding land on one surface of the counter knife to ensure proper knife alignment. The counter knife is adjustably positionable relative to the knife holding means.

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

Abstract: A cutting tool having a high wear resistance is disclosed. The cutting tool consists of a plate-shaped body comprising a sintered cermet layer and a sintered body layer containing high density boron nitride or diamond, said sintered cermet layer constituting the center portion of the plate-shaped body and being surrounded and adhered at the side surface or at the side surface and upper and lower surfaces with the sintered body layer.

Abstract: A knife assembly for a disc type wood chipper for cutting wood chips from a log, for example, comprises a knife seat and knife clamp between which a multi-section two-edged reversible knife and an associated counter knife are releasably clamped. One surface of the knife has serrations which engage serrations on one surface of the counter knife to ensure proper knife alignment and enable knife position adjustment, at least in one embodiment. The counter knife is also adjustably positionable relative to the knife seat and knife clamp.

Abstract: A precision high velocity cutting tool having indexable inserts or cutting bits includes a replaceable cutting section or insert holding nest that is made of a material that is harder and stronger than that from which it is economical to make the major cutter body. The nest is easily replaced without removing the cutter body from the drive shaft or spindle. Two holding screws retain the nest on the cutter body, one of them also securing an indexable cutter insert in cooperation with a reversible clamp. The nest facilitates the replacement of that portion of the cutter body that tends to deteriorate most rapidly and enables the replacement to be confined to the damaged area of the tool. A shaver blade is included that effects, in cooperation with the main cutting inserts of the cutting tool, smoother cutting, providing a finish approximately a planed surface.

Abstract: A chipper knife (1) is fastened in a chuck (2). The knife has two supporting faces (15,14), which lie against two faces (25,24) in the chuck.The fastening of the tool can be improved if the rear supporting face (15) of the knife is provided with at least one finger (1a), which fits into a recess in the chuck (2) and whose bottom face constitutes at least a part of the bottom supporting face (14) of the knife.

Abstract: A planing tool has a cylindrical body with elongated axially extending grooves in which elongated inserts with planing members are received, adjusting screws extending in a radial direction and arranged to adjust the radial distance of the inserts from the axis of rotation of the body, clamping screws arranged to clamp the inserts in the elongated grooves, wherein each adjusting screws extends through an opening of the respective insert with play, and a spring element is located between a bottom wall of each of the grooves and a respective one of the inserts.

Abstract: The disclosure relates to wood chippers having a chip separation surface comprising unitary ribs which, after grinding of the cutter, form chip separator tips.

Abstract: Apparatus for reducing a log to chips comprising a rotatable cutter head adapted for translational movement relative to a log, and carrying a cutting element, such element comprising a length of open-ended tubular or segment there of material having a leading beveled cutting edge which attacks the log to cut away a chip which travels away from the log through the tubular cutting element. The cutting element is matingly and removably received in an appropriate recess in the cutter head thereby providing for mounting of the cutting element on the cutter head with a preselected segment of the leading edge of the cutting element exposed to attack the log.

Abstract: The disclosure relates to a tool consisting of a tool body and cutter bits which are each secured in a slot in the body. By means of a tension screw which engages with the end portion of the bit located most proximal the bottom of the slot, the bit is fixedly retained in the slot under the application of a torque, the bit engaging with the slot walls at, in particular, three points; namely a point on the chipping face of the bit above a clearance disposed between this face and the slot face adjacent the bottom of the slot, a point on the rear face of the bit adjacent the periphery of the tool body, and, finally, the bottom of the slot. The tension screw engages with a surface on the bit which is located beneath a plane at right angles to the longitudinal direction of the bit through the abutment point on the chipping face of the bit, the surface preferably making an angle of approximately 45.degree. with this plane.

Abstract: A wood chipper embodying a pair of adjacent discs mounted in face-to-fact relation on a drive shaft for rotation therewith. The discs are secured to each other and have angularly spaced aligned passageways therethrough. A recess is provided in one disc at the trailing side of each angularly spaced passageway, as viewed in the direction of rotation. A knife holder mounted within each recess carries a knife which is retained by a knife clamp. Interlocking means between the clamp and the knife holder limits relative movement therebetween both axially and radially to maintain accurate location of the knives. The end of the knife holder removed from the aligned passageways is spaced from its disc to define a cavity which receives babbit. Also, the edge of the knife opposite its cutting edge is spaced from the knife holder and may have slots which extend at an angle relative to the cutting edge to define cavities which receive babbit.

Abstract: A debarking tool for a rotor type debarking machine is provided with an arcuate body having a substantially sharp log engaging climbing edge portion so arranged thereon and positioned closely adjacent a cutter member on the adjacent free end of the arcuate body as to aid the logs in quickly deflecting the debarking tool out of the path of the logs during rotation of the tool with the ring rotor.

Abstract: A blade for a cutter for a wood reducing machine, said blade being of a star like three-horn cross-sectional shape, whereby the tips of the horns form cutting edges each comprising two plane blade surfaces. Each two blade surfaces and the plane connecting surface positioned between said two blade surfaces form a Z-shaped broken line in the cross section of the blade. This shape of the blade provides for an easy fastening of the blade in a fastening socket by means of one of the horns of said blade.

Abstract: A rotatable cutter spindle for cutting chips of predetermined length has a supporting body having an axis, and a plurality of cutters mounted on the body in spaced relationship to one another and inclined relative to the axis of the body. Each of the cutters includes an acute angle with the axis and has a leading and a trailing end and defines cutting angles which differ from one to another of these ends. Each of the cutters has alternately arranged radially outer cutting edges and radially inner cutting edges of which the radially inner cutting edges are formed by grooves which are provided in the cutters and which have a width that increases from the leading end toward the trailing end of the cutter. The radially outer cutting edges are arranged at a first common circular surface, whereas the radially inner cutting edges are arranged at a second common circular surface.

Abstract: A rotary cutter is provided with a spiral plane bit which comprises a mounting plate extending spirally in the axial direction with a constant width, the mounting plate being made in such a manner that it is spirally cut out of a hollow cylinder with the inner radius of the mounting plate and a bit edge member extending also spirally along one lateral margin of the mounting plate and being fastened thereto, wherein there are provided a plurality of fastening holes arranged in the mounting plate in the longitudinal direction thereof, through which fastening elements extend radially into a plurality of threaded holes so as to fasten the mounting plate together with the said bit edge member on a rotary shank.

Abstract: A cutting tool assembly for the surface treatment of round timber including an arm having at one end thereof a recess portion at least a portion of which is shaped substantially as a partial regular pyramid, a cutting tool shaped substantially as a regular pyramidal funnel adapted for engagement with and disposed in the recess and fastening means for removably securing the cutting tool in the recess.

Abstract: A debarker toe assembly includes a holder adapted for mounting to the end of a debarking arm and a demountable toe including a debarking edge. The holder and toe include interengaging surfaces for centering and holding the pieces in precise alignment during assembly of the toe to the holder and during use in which the assembly encounters high impact forces.

Abstract: The manufacture of bent knives for wood cutting machines is simplified and made less expensive by designing the knife so that the finish grinding operation on its opposite faces may be performed before, instead of after, the bending operation on a flat plate. This is made possible by reducing the plate thickness to 1/4 inch or less which permits a ratio of radius of bend to plate thickness of at least 2.25. This ratio virtually eliminates breakage of the knives because of abusive processing.

Abstract: A chipper comprised of a disk body, a driving shaft mounted on the disk body for rotating it and at least one spout connected with the casing and a plurality of cutting blades located on the disk body along at least one spiral path extending from the center to the periphery of the disk body, each of the cutting blades having main and auxiliary cutting edges which are positioned and connected angularly to each other, the main cutting edge being inclined to the surface of the disk body with such an angle that one end of the main cutting edge is positioned at a height corresponding to the thickness of chips to be cut with the connecting edge between the main edge and corresponding auxiliary cutting edge positioned two times as high as the one end of the main cutting edge.

Abstract: A chipping device including a disc-like member having a front face and the opposite face connected at its central region to a rotating shaft, said front face being provided with a spiral working surface which consists of main and auxiliary oblique surface portions extending along a spiral path from the central region of said disc-like member to the peripheral edge thereof, and being inclined relative to a plane perpendicular to the rotational axis of the disc-like member with an angle included between said main and auxiliary surface portions, said working surface having a plurality of cutting blades spaced from one another therealong, each of said cutting blades having main and auxiliary cutting edges substantially parallel to said main and auxiliary oblique surface portions, respectively.

Abstract: A cutting tool such as a circular saw or chain saw is composed of a support having one or more tapped cavities and a cutting element having an elongated threaded shank engaged in the cavity and having an enlarged head at an end of the shank projecting from the cavity.