Abstract: A rotating disc assembly for use on a stump grinder that can include: a rotating disc member having a peripheral edge and defining a central axis and a radial direction; a bit securing sub-assembly comprising a bit holder member mechanically connected to the rotating disc member and having a first portion extending in a first direction, and a second portion extending from said first portion along a second direction that is not parallel to said first direction; a bit mechanically connected to the bit holder member by a fastening hardware; and a first portion of the peripheral edge extending a further distance in the radial direction than a second portion of the peripheral edge; wherein the bit and the bit securing sub-assembly are sized, shaped, located and/or connected so that the first bit is at least partially shielded by a footprint of the first portion of the peripheral edge.

Abstract: A high speed planer head. Disclosed according to one aspect of the invention is a hub and a threaded member. The hub is axially disposed for rotation about an axis, and has a pocket for receiving a first knife against a supporting wall of the pocket. The threaded member has a frustoconical ramping portion for producing a wedging force against the knife when the threaded member is threaded into a threaded hole in the hub. According to another aspect of the invention, a second hub for carrying a second knife is provided, the second hub preferably being bolted to the first hub to that the hubs can be disassembled. The second knife preferably has two linear cutting edges and the second knife preferably has at least two curvilinear cutting edges and more preferably has four concave, semi-circular cutting edges that are spaced apart from one another with 90 degree rotational symmetry.

Abstract: A high speed planer head. Disclosed according to one aspect of the invention is a hub and a threaded member. The hub is axially disposed for rotation about an axis, and has a pocket for receiving a first knife against a supporting wall of the pocket. The threaded member has a frustoconical ramping portion for producing a wedging force against the knife when the threaded member is threaded into a threaded hole in the hub. According to another aspect of the invention, a second hub for carrying a second knife is provided, the second hub preferably being bolted to the first hub to that the hubs can be disassembled. The second knife preferably has two linear cutting edges and the second knife preferably has at least two curvilinear cutting edges and more preferably has four concave, semi-circular cutting edges that are spaced apart from one another with 90 degree rotational symmetry.

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

Abstract: A helical knife assembly has a plurality of blade holders. Each blade holder has two opposite step flanges, a blind hole, and a threaded groove communicating with the blind hole. A positioning block has a slant recess and two apertures. An oblong blade has two positioning holes. A pressing block has a bevel and an inner threaded hole. A hollow double end bolt has a first outer thread and a second outer thread. The positioning block is inserted in the respective blade holder. The oblong blade is disposed on the positioning block. The first outer thread of the hollow double end bolt is inserted in the threaded grooves The second outer thread of the hollow double end bolt engages with the inner threaded hole of the pressing block.

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 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 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 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: The invention concerns a milling tool (10) with reduced noise emission for machining panel-like pieces of wood. The reduction in noise emission is brought about by reducing the vibrations produced in the tool and workpiece and by proportioning the cut, machining being carried out in two stages. The greatest part of the chip volume (first stage) is removed under favorable noise-emission conditions using a special cutting geometry. The tool and workpiece vibrations are reduced by a clearly reduced rise in the shear force pulse using a special cutting tooth geometry. The chip volume removed under these conditions is only small (second stage), and so good quality machining can be attained.

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

Abstract: A rotary cutting device suitable for stump grinding comprises a power shaft having a fixed annular flange, a segmented tool carrier removably mounted to the flange and constituted by plural segments which together form a disc. Each of the segments of the tool carrier have a hub portion and a unitary arm that extends out radially from the hub. Cutting tools are mounted to each arm and together provide a cutting tool array about the periphery of the cutting device.

Abstract: An interchangeable chipper tool attachment for a hog allows a hog machine to operate as either a hog or a chipper. An operator of the hog machine can remove hammer tools used in the hog and replace them with the chipper attachment. The chipper attachment includes knife receiving area, a knife support receiving area, and a fastener portion for mounting the tool holder to rotor disks on the rotor assembly of the hog machine. A knife assembly, including a chipper knife, is coupled to the tool holder at the knife receiving area and points in the direction of rotation of the rotor. A knife support block supports the chipper knife and is coupled to the tool holder at the knife support receiving area, a lateral face of the tool holder adjacent to the knife receiving area. When mounted in an interleaved fashion between the rotor disks of the rotor assembly, the chipper knife rotates in a circular path and produces chips by cutting wood waste against an anvil on the hog.

Abstract: A chipping cutter head including a double-edged knife and support structure mounting the knife in a pocket provided at the periphery of a cutter head body. The support structure includes a block member fastened by screws to the floor of the pocket. Adjustment structure is provided for adjusting the position of the block member, with this being effective to shift the position of the cutting edge of a knife supported on the block member. A replaceable insert member with a wear surface is positioned by a pin on the block member, and this insert member supports the knife and the knife is locked from shifting axially on the insert member.

Abstract: A rotor for an impact crusher which has rotor plates distributed along the length of a rotor shaft and secured to the shaft. Aligned, open, recessed cavities in multiple rotor plates receive a backing bar spanning the plates and the bar is secured to the plates. A removable hammer bar seats in the cavities and rests against the backing bar. Wedges held in place by retainers hook the hammer bar in place.

Abstract: A chipping cutter head having multiple spindle segments disposed side-by-side and forming a body in the cutter head. Circumferentially distributed pockets in each spindle segment have knife holders detachably mounted therein and held in place by clamps. Double-edged knife elements, that are replaceable, are detachably clamped in position on each knife holder.

Abstract: A cutterhead for an industrial woodworking machine which is operable to incorporate a sufficient number of knife rows to permit a staggered tooth arrangement for noise reduction or, alternatively, to provide improved surface finish at higher feed rates without increasing cutterhead RPM. The cutterhead also provides for the generation of a variety of shapes when used with appropriately shaped individual cutting inserts. The cutterhead includes a cutterhead body having a cylindrical portion having a plurality of circumferentially spaced grooves for receiving a plurality of cutting inserts, a predetermined hole pattern in the cutterhead body for securing the cutting inserts in the grooves, and in the preferred embodiment elongated slots in the cutting inserts which permit lateral adjustment of the cutting inserts along the axis of the cutterhead. Profile shape adjustments are made through the use of a cam device.

Abstract: This combination tool (10) includes a body (12) attachable to a drill press (16) by means of a shaft (14). The body includes an end face (34) for attachment of an abrasive finishing disc (36) and provides a mounting for cutter inserts (40). Each cutter insert includes a horizontal cutting edge (46') and a vertical cutting edge (48'). The cutter inserts (40) are generally rectangular and are mounted to vertical abutment bearing faces (52) on the body, utilizing a single fastener (56).

Abstract: A molding head includes a cutter mounted to a cutting machine arbor. A follower assembly is also mounted on the arbor and is adapted to rotate adjacent to, and independently of, the cutter head. The follower assembly serves to control the depth of cut and to guide the molding cutter along any profile which is desired to be cut.

Abstract: A rotary cutter assembly for cutting or milling the edge of a workpiece which is formed of layers of different materials. The rotary cutter assembly comprises a first cutter head and a separate second cutter head disposed in mutual coaxial relationship. The rotary cutter assembly is adapted for rotation about the mutual coaxial axis. The first cutter head includes at least one cutter blade pocket open to the perimeter of the first cutter head, a cutter blade received within the cutter blade pocket with its cutting edge protruding from the pocket opening beyond the perimeter of the first cutter head, and an adjustment device for adjusting the distance by which the cutting edge of the cutter blade protrudes beyond the perimeter of the cutter head. The second cutter head includes at least one cutting edge formed in the perimeter of the second cutter head.

Abstract: A cutting device of a sugar cane harvester, which includes a pair of rotary rollers each provided with elongated cutting straps having a number of blades and extended parallel to the axes of the respective rollers. Each roller is formed with an elongated supporting strip and a number of supporting projections spaced from the strip so as to form a plurality of grooves each receiving individual blades of the cutting strap and a clamping member. The blade and the clamping member are clamped between the side walls of the groove by a bolt extending through the clamping member into the body of the roller.