Abstract: A shredder blade assembly is disclosed having a rotor configured to be mounted on a rotating shaft, the rotor having opposing faces with a plurality of angled knife receptacles and a plurality of knife inserts mounted within the plurality of knife receptacles. Each knife insert has two opposing faces and each opposing face comprises three cutting edges such that each knife insert has six cutting edges. Only one of the cutting edges is exposed at an outer peripheral edge of the shredder blade assembly during use. The knife inserts are configured to be removed, rotated (and flipped as needed), and re-mounted within the plurality of knife receptacles to expose another of the cutting edges at the outer peripheral edge of the shredder blade assembly. The knife insert may be triangular and mounted to expose one vertex to create a plurality of tooth/hook projections.

Abstract: A trash collection assembly may include a dumpster housing which may house therein a dumpster to provide a more desirable aesthetic appeal. A garbage truck may be configured to lift the dumpster out of the dumpster housing without the need for the garbage truck driver to get out of the truck. A cover of the dumpster may open and close automatically respectively during the removal of the dumpster from the housing and return of the dumpster to the housing.

Abstract: A shredder blade assembly is disclosed having a rotor configured to be mounted on a rotating shaft, the rotor having opposing faces with a plurality of angled knife receptacles and a plurality of knife inserts mounted within the plurality of knife receptacles. Each knife insert has two opposing faces and each opposing face comprises three cutting edges such that each knife insert has six cutting edges. Only one of the cutting edges is exposed at an outer peripheral edge of the shredder blade assembly during use. The knife inserts are configured to be removed, rotated (and flipped as needed), and re-mounted within the plurality of knife receptacles to expose another of the cutting edges at the outer peripheral edge of the shredder blade assembly. The knife insert may be triangular and mounted to expose one vertex to create a plurality of tooth/hook projections.

Abstract: The present invention relates to a milling drum for removing glued-down floor coverings, in particular wooden floor coverings, preferably parquet floor coverings, in particular multilayer parquet, with a predetermined milling width which determines the width of a floor surface section by running the milling drum over the floor surface section to be machined, having a plurality of cutting plates which are arranged tangentially on the milling drum and which are arranged in a distributed manner on the milling drum, such that, upon a complete revolution of the milling drum, the entire milling width is operable with at least one cutting plate and such that a common width of the cutting plates being in contact simultaneously with the floor surface section to be machined is always smaller than the milling width.

Abstract: A cutter for use with a comminuting apparatus includes a body, a body slot, and a bore hole. The body has first and second opposing surfaces, a first edge adjoining the first and second surfaces, and a cutting edge opposite the first edge. The body extends from the cutting edge to the first edge. The body slot extends through the cutter body from the first surface to the second surface. The bore hole is enclosed by the first and second surfaces, and extends from the body slot to the first edge.

Abstract: The present invention relates to a jet mill combining a high speed grinding apparatus and a high speed grinding apparatus with a jet mill mounted thereon wherein in consideration of the properties of aluminum having a high degree of softness, pressurizing air is injected not through existing air nozzles, but through injection holes, and the number of injection holes and the approach angles toward air of the injection holes are optimized to maximize the particle collision of the grinding object, thereby manufacturing granules having particle sizes in the range between 100 ?m and 1000 ?m.

Abstract: A knife assembly for a waste processing system includes a plurality of cutters disposed on a drum. The cutters further include a cutter body, a knife assembly including a first clamp, a second clamp, and a knife. The knife is removably affixed between the first and second clamp and has at least one cutting surface which extends beyond respective ends of the first and second clamps, whereby the cutter body and knife assembly are operably disposed on a drum for a waste processing system.

Abstract: The field of the disclosure relates to anvils for comminuting apparatus such as grinders or chippers. In some embodiments, the anvil is adjustable in length to maintain a clearance between a comminuting drum and a shear edge of the anvil.

Abstract: The invention relates to a device for dissolving compressed blocks of loose-fill cellulose thermal insulation material. The device comprises a support surface for the compressed blocks of insulation and a cylinder with protruding members arranged on the cylinder mantel surface. Said cylinder is rotatable around a substantially horizontal axis in order to process and dissolve the compressed blocks of insulation between the protruding members and a processing zone arranged by an edge of said support surface. The invention is characterized in that said protruding members arranged on the cylinder mantel surface are elongated protrusions extending substantially parallel to the horizontal axis. The invention is further characterized in that the cylinder is arranged to rotate inside of an arc-shaped surface partly covering the cylinder mantel surface and prolonging the milling zone in a peripheral direction of the cylinder.

Abstract: A device for comminuting feed material is provided that has a housing including longitudinal walls and transverse walls for accommodating a rotor that rotates about a longitudinal axis. The rotor is equipped about its circumference with processing tools, and has, on its faces, an annular disk, each of which is concentric to the longitudinal axis. Within the housing, at least one screen path extends over a part of the circumference of the rotor, each screen path running at a slight radial distance from the annular disks while forming a seal gap. The feed material is supplied to the rotor through a feed shaft and is directed out of the device via a material discharge extending downstream of the screen path. In order to return material that emerges through the seal gap to the remaining material flow annular disks are each arranged with an axial clearance A from the transverse walls.

Abstract: The present invention provides a cutting tooth for use on a brush cutter head. The cutting tooth includes a cutting portion having a first face and a second face. The first face and the second face cooperate to define a tapering profile terminating in a cutting edge. The first face of the cutting portion carries a plurality of ridges formed thereon to direct cutting debris away from the cutting edge and facilitate passage of the debris along the trailing face when the cutting tooth is in use.

Abstract: Embodiments of the invention are directed to roll assemblies configured to exhibit improved wear resistance of stud elements. Accordingly, the roll assemblies of may improve and/or increase the useful life of high pressure grinding roll apparatuses. In an embodiment, one or more stud elements may include superhard material, which may provide superior wear resistance characteristics and may increase the useful life of the rolls assemblies and high pressure grinding roll apparatuses.

Abstract: A device for comminuting material components includes a housing, at least one rotor that is supported in the housing and has rotor blades and rotor teeth mounted thereon, at least one stator blade that can be supported on the housing, and at least one screen device, which can be moved from an operational state of the comminuting device downward or laterally relative to the housing to a maintenance state, wherein in the operational state the at least one stator blade and the at least one screen device are supported against each other and can be moved together into the maintenance state.

Abstract: A pulverizer includes a cutting rotor with a multiplicity of cutting blades, a cutting stator surrounding the cutting rotor with a plurality of stator blades, a milling stock inlet for the milling stock feed and a discharge screen in direction of rotation of the cutting rotor located after the milling stock inlet, wherein all stator blades in direction of rotation of the cutting rotor are arranged between the milling stock inlet and the discharge screen. Furthermore, an operating method for a pulverizer as described above is also contemplated.

Abstract: A material reduction machine includes a frame, a drum housing mounted to the frame, and a drum that is mounted for rotation within the drum housing. The drum includes a circumferential wall and a knife that is mounted on the drum. The machine includes a plurality of interchangeable belly bands, each of which is adapted to be removably attached to the frame so as to form a portion of the drum housing and to provide an inner surface that forms a belly band arc portion that is concentric with and of a larger diameter than the circumferential wall of the drum. A first interchangeable bellyband has a smooth inner surface, and a second interchangeable belly band has a plurality of flow interrupters spaced along its inner surface.

Abstract: A cutting tool for a bolt-in toolholder assembly in a shredding device including a rotor and a bolt-in toolholder, comprises an upper surface and a lower surface, a first side and a second side extending between ends of the upper and lower surfaces, the upper, lower and first and second side surfaces defining a polygon shaped cutting tool, the cutting tool having a forward side and a rearward side, a cutting surface having by an upper portion and opposed side portions, the cutting surface disposed on at least one of the forward side and the rearward side, the cutting surface being offset from a well, the well having a flat inner surface for seating the cutting tool in a first dimension, the well being polygonal in shape, the well size determining a width of the cutting surface, a bolt-in aperture disposed in the well.

Abstract: Apparatus for comminuting pourable feedstock, including a housing surrounding a comminution space, in which housing a rotor rotating about an axis is disposed, the rotor being equipped around its circumference with rotor tools. A screen is disposed here along one portion of the rotor circumference. The apparatus is charged with feedstock through a product inlet, and the sufficiently comminuted product is drawn off through a product discharge. The product discharge includes a suction bin to collect the screen through fraction, which bin can be connected to a suction line to allow the collected product to be transported away. In order to improve the accessibility of the rotor for repair and maintenance work while simultaneously preserving a compact constructive design of the apparatus, the screen and the suction bin form one unit that can be swiveled as a whole about a horizontal swivel axis relative to the rotor.

Abstract: An improved grain mill is presented herein comprising a dispenser adapted to receive and store a material, and a grinding mill adapted to receive the material from the dispenser. The grinding mill comprises a grinding cylinder and a motor assembly adapted to rotate the grinding cylinder. When the material is dispensed into the grinding mill from the dispenser, and the motor assembly is engaged, thereby causing the grinding cylinder to rotate, the material is moved along a tapered passage and forced across a sharp edge, causing the material to be ground, crushed, broken, flattened, or cut, dispensing the material into a material receiving portion and thereby allowing the material to be delivered to the user.

Abstract: A machine and a method for providing substrate for use in manufacturing of biogas. The machine is provided with an intake for input of moist and dry organic waste to the machine's interior chamber, where the organic waste may contain foreign bodies such as soft packaging, metal, glass, etc., a rotating shaft located in the chamber and provided with at least one tool which has a blunt shape, a stationary part mounted in the chamber acting as the tool's counter-tool, an outlet for milled particles, and an ejector for foreign bodies. The distance between the tool and the stationary part is such that the solid parts are milled into smaller pieces, while a milling effect on softer parts is prevented.

Abstract: A debris vacuum having one or more rotating shearing edges and at least one supplemental shearing edge in close proximity to the rotating shearing edges. The supplemental shearing edge may be stationary and attached, for example, to a housing containing the rotating shearing edge, or to a vacuum tube that is itself attachable to the housing.

Abstract: The present invention is directed to an apparatus and method for separating carpet fibers from a backing material to which said fibers are secured. The apparatus includes a belt for driving a carpet strip having one or more backings and one or more fibers secured on a face of said backing into the operative part of the device. There are a pair of rollers that are adapted to receive the carpet strip from said belt, and pass the carpet strip to a dish plate. The dish plate has an edge extending upwardly from the dish plate. The face of the carpet having the fibers contacts the edge after the carpet passes through the rollers. The edge of the blade holds the carpet presenting it to the main drum. The main drum rotates downwards and has a plurality of pins that shred the carpet backing and tear apart and free the face carpet fibers from the backing fibers. The face fibers pass to a receptacle for recycling.

Abstract: A rotary knife for a granulator having a two-piece design comprising a blade holder and a removable blade, the blade holder having a V-shaped saddle for holding the removable blade aligned. The V-shaped saddle having a flat surface for absorbing the shock of force transmitted by the blade shearing plastic and other materials for recycling and reuse.

Abstract: A crushing device comprises a crushing mechanism for crushing an object, the crushing mechanism performing the crushing operation by a stationary blade and a crushing rotor which is rotationally driven by a crushing motor; a conveying mechanism for pressing and conveying the object to the crushing mechanism by a conveying roller rotationally driven by a conveying motor; a pressing mechanism for pressing the conveying mechanism to the object by an arm cylinder; and a hopper for receiving the object. The drive force of the arm cylinder is controlled according to the drive load of the conveying motor, and the rotational speed of the conveying motor is controlled according to the drive load of the crushing motor.

Abstract: This invention relates to a shredding device having a driving unit driving a rotor including shredding tools on its periphery which for comminuting a material such as waste material and/or industrial residues, interact with a least one counter knife assembly that is arranged in a stationary fashion with respect to the machine housing during the shredding operation. The shredding device is characterized in that the counter knife assembly includes at least two counter knife bars which run approximately parallel to each other and are arranged one above the other in the rotating direction of the rotor, the counter knife bars, for the compensation of wear at the shredding tools and/or at the counter knife assembly, being arranged for an adjustment radially to the rotor axis by a mutually different degree by means of an adjustment device. A process for operating a shredding device is also described.

Abstract: The present invention relates to fastening means for fastening a screen plate onto a screen carrier of a screen device for a comminuting device, comprising a first tensioning element, which is connected to the screen device, particularly to the screen carrier, and which is designed to exert a force on the screen plate; a second tensioning element, which is connected to the screen device, particularly the screen carrier, and which is designed to exert a force on the screen plate, wherein at least one of the tensioning elements is an elastic element, which is designed to exert an elastic restoring force on the screen plate such that the screen plate is tensioned between the first and the second tensioning elements. The invention further relates to a method for fastening a screen plate onto a screen carrier of a screen device for a comminuting device.

Abstract: The present invention provides a device for shredding sheet material, comprising shredding means—(2) for shredding the sheet material and a feed conveyor system for feeding sheet material. The feed conveyor system comprises a suction duct (12) having an inlet (19) and an outlet (20), and suction means for sucking sheet material to be shredded from the feed location to the shredding means via the suction duct and for sucking sheet material shredded by the shredding means to the collecting location. The shredding means comprise at least one stationary shear blade (4) and at least one rotary shear blade (3), as well as drive means. The device further comprises detection means for detecting an increased risk of jamming of the shredding means during operation of the device, as well as blocking means (31) which operate in dependence on the detections made by the detection means for partially blocking the suction duct in a blocking position or releasing the suction duct in a free position.

Abstract: A device for processing free-flowing input material is provided that includes a rotor rotating around a shaft within a housing, the rotor being fitted over its circumference with rotor tools. Stator tools, permanently fixed to the housing, are arranged, which are disposed opposite the rotor tools allowing a working gap and interact with the rotor tools to process the input material. The stator tools are held in a holder, forming a tool unit. The tool units are made self-supporting over the length of the rotor and end sections of the tool units are fixed removably in respective clamping devices.

Abstract: True zero-clearance cutting on a commercial scale is provided via a cutting area including a sacrifice material that is relatively softer than the cutter. One example is a cutting system which is capable of cutting a material such as, for example, tape or paper, into a fiber or powder. Destruction of the material is further enhanced by advantageous strategic patterning of cutting edges on a rotary cutter, and further by secondary shredding features. For example, on the same axis as the rotary cutter, may be disposed, one on each end, rotating secondary shredders that receive material that has been cut by the rotary cutter as well as material that has escaped cutting by the rotary cutter. A variety of materials, of different thicknesses and types, may be reduced to a dust or powder-size.

Abstract: True zero-clearance cutting on a commercial scale is provided via a cutting area including a sacrifice material that is relatively softer than the cutter. One example is a cutting system which is capable of cutting a material such as, for example, tape or paper, into a fiber or powder. The cutting system includes a cutting blade, typically a rotary cutter, and a sacrificial plate or round bar contacting the cutting blade. The contacting portion has a zero clearance during the cutting operation. A metering mechanism is also provided which is capable of metering the material at a predetermined rate to the cutting blade. A mechanism is also provided for incrementally moving the sacrificial blade towards the cutting blade to ensure that the zero clearance is maintained between the cutting blade and the sacrificial plate, even when the sacrificial plate begins to wear down due to usage.

Abstract: A star feeder for conveying all types of bulk materials having a comminuting insert for crushing bulk material agglomerates (29). Bulk material agglomerates are conveyed into the inlet of the star feeder (1) and there pass through the comminuting insert (10), which comprises at least one shearing wall (20), which includes at least two mutually angled shearing surfaces (21, 22), which widen upward, toward the inlet direction (11) and meet centrally in the region of at least one feed edge (23).

Abstract: A crusher is provided that can quickly return to the operating state from a shutdown state which occurs due to the incorporation of a foreign object. Provided are a crushing rotor 32, a housing 41 and an anvil 33 supported by the housing to face a crushing chamber 31. A lever 90 is disposed on the side opposite the crushing rotor 32 with respect to the housing 41, pivotably installed with respect to side frames 19, and provided with a holding portion for holding the housing 41 to keep a posture where the anvil 33 faces the crushing chamber 31. An elastic member 93 is for biasing the lever 90 at a set biasing force. When the biasing force is exceeded, the lever 90 turns to permit the anvil 33 to turn and retreat from the crushing chamber 31.

Abstract: There is provided a fibrous particle generating apparatus and a test system. The fibrous particle generating apparatus includes a base material containing a fibrous material; a holding unit holding the base material; a fibrous particle generator generating fibrous particles by chafing the base material; and a movement unit moving the holding unit such that the base material held by holding unit is chafed against the fibrous particle generator. With this configuration, fibrous particles can be stably generated, and an evaluation of the object apparatus can be carried out on the basis of the generated fibrous particles.

Abstract: A chopping drum for a forage harvester has a shaft. Supporting rings are mounted on the shaft one next to the other in the axial direction and extending in the radial direction. Blade holders are distributed around the outer periphery of the supporting rings, and chopping blades are mounted on the blade holders by first screws. The first screws produce a connection between blade holders one following the other in the peripheral direction.

Abstract: A chopper assembly for a combine includes a rotary chopper element, a chopper grate assembly spaced from the rotary chopper element to form a passageway for crop residue and a knife bank adjustably connected to the chopper grate assembly. The knife bank is movable between a first position where the knife bank is fully inserted into the passageway and a second position where the knife bank is full retracted from the passageway. An actuating mechanism is used to move the knife bank between the first position and the second position. A position sensor is used to measure the position of the actuating mechanism and determine the position of the knife bank relative to the passageway.

Abstract: The present invention is a shredder-granulator comprised of a plurality of rotary shear blades and a plurality of stationary bed knives fixedly attached to two counter-rotating shafts. The stationary bed knives are also secured to a frame. The shredder-granulator is capable of shredding and granulating materials in a single pass.

Abstract: A cutting mill for crushing broken polycrystalline needle-shaped silicon material, which contains particles that have an aspect ratio of AI with 5<AI ?30, and/or broken Si wafer consisting of laminar particles, wherein the cutting mill has an interior space that is lined with silicon and/or plastic, wherein the cutting mill has a rotational body configured as a multi-sided column, wherein said rotational body, in the regions facing the interior space of the cutting mill, is lined with silicon or features silicon, and wherein blades which run parallel with the longitudinal edges of the rotational body and are disposed in the rotational area of the rotational body, are arranged in the interior space of the cutting mill, and are adjustable with respect to the rotational body.

Abstract: Self-healing of a mechanical part in a mechanical system is provided, such as a self-healing part in a cutting apparatus. Differential hardness of respective parts in contact with each other is used. Undesirable damage from a foreign object in a mechanical system is managed by directing damage away from a part that is not wanted to be damaged and towards a part that may receive damage and be replaced. True zero-clearance cutting on a commercial scale is provided via a cutting area including a sacrifice material that is relatively softer than the cutter. One example is a cutting system which is capable of cutting a material such as, for example, tape or paper, into a fiber or powder. Destruction of the material is further enhanced by advantageous strategic patterning of cutting edges on a rotary cutter, and further by secondary shredding features.

Abstract: Advantageously, certain embodiments of the present invention provide a system that allows easy replacement of one or more worn rotor teeth and/or rotor tooth mount(s) mounted on a waste fragmenting machine. The present invention may further provide a system that allows minimization of stress during fragmentation on the attachment mechanisms between the mount and the rotor.

Abstract: A shredder head adapted to shred data bearing documents and/or bottles. The shredder head also includes a plurality of shredder blades which are disposed within the shredder head housing and are adapted to shred material inserted into the shredder cavity. The shredder head preferably includes at least one grate oriented below the plurality of shredder blades. A sorting section of each at least one grate may be configured to prevent larger pieces of shredded material from passing through the grate.

Abstract: A rotary chopper element for an integral chopper assembly of a combine harvester, which rotary chopper element includes a cylindrical rotary member having a plurality of ring portions axially aligned in an ordered side-by-side arrangement along the longitudinal axis of the rotary member, with each ring portion having disposed annularly therearound a plurality of mounting lugs, each of which mounting lugs is designed to support or to have affixed thereto at least one knife blade. The mounting lugs on each succeeding ring portion are rotated or offset radially from the lugs of the preceding ring by a predefined amount and the knife blades are attached to the mounting lugs to form mounted assemblies that have beveled leading edges that extend substantially continuously from adjacent to the outer surface of the rotary member to the tips of the knife blades. The knife blades of such mounted assemblies define a plurality of spaced helical arrays that extend along and wrap around the rotary member.

Abstract: A roof grinder is operative to both comminute and transport rubber, asphalt, insulation, rock and other diverse material. The grinder has a cutter which comminutes commercial roofing material. An air transport uses a high velocity air stream to blow the comminuted particles to a collection site on the ground. A rotary air lock couples to the cutter for receiving comminuted roofing material and isolates the cutter from the air transport, to prevent high velocity air from passing through the rotary air lock to cutter. The device is sized for placement on the roof, and has wheels or tracks for easy movement. A flexible hose couples the air transport to a remote location for discharge, such as to a roll-off container. In an alternative embodiment, a roof grinder is operative to both comminute and transport rubber, asphalt, insulation and rock material, and the cutter is operative upon a roof sub-floor to both remove and comminute commercial roofing material.

Abstract: A waste shredder (1) includes at least one loading chamber (3), two or more rotors (4) placed in seats formed in the bottom wall of the loading chamber (3) and a movable hopper (2) sliding above the loading chamber (3) and provided with a reciprocating translational movement. The hopper (2) has two end walls (B, B?) and carries a plurality of stiff vanes (5) placed in the spaces between the rotors (4), the end walls (B, B1) and the stiff vanes (5) protruding downward until they skim the bottom of the loading chamber (3) to press the material (8) to be shredded against the rotors (4). The rotors (4) turn in the opposite direction to the translational movement of the hopper (2) and reverse their direction of rotation when the hopper (2) reverses its direction of translation.

Abstract: A hogger and reducing apparatus and considers issues associated with fibrous other materials clogging screening apertures A paddle arrangement having an open framework rotates relative to the screening apertures provided on a drum. Either or both the paddle arrangement and drum may rotate, the resultant action increasing agitation of raw material (being reduced in size by a reducing means) in the vicinity of the screening apertures and also providing a wiping type effect to help clear material from within the apertures.

Abstract: A granulator mill has a mill housing which has an openable part and a fixed part, and an infeed hopper; the fixed part includes a rotor with a number of blades which co-operate with fixed blades in the mill housing; the openable part has a discharge section which is discrete from the interior of the mill housing by means of a grid which surrounds approximately 160° of the rotor and extends in beneath it; where the fixed part and the openable part are connected to one another by the intermediary of a pivot device with a vertical pivot axis and the end of the openable part facing away from the pivot axis is fixedly lockable in the fixed part at the journal box of the rotor and is centered there by a guide surface at the journal box and a guide surface on the openable part, the openable part is thus horizontally pivotal and may be opened manually; the infeed hopper is vertically pivotal about a horizontal axis and opened by means of a motor, where the infeed hopper and the openable part have mutually engaging lo

Abstract: A coarse material comminution machine 1 comprises a rotor 2 fitted with blades 4 and a stator body 3 located on the stator side with at least one blade 5 adjustable by means of a control device 11 in the direction towards the rotor 2 and in the direction away from the rotor 2. The control device has an adjusting slide 12 that is movable relative to the rotor 2 as well as an activating device 13 for the movement of the adjusting slide 12 in the direction towards the rotor 2 and in the direction away from the rotor 2. The blade 5 is kinetically coupled to a movement of the adjusting slide 12. The blade 5 is connected to the adjusting slide 12 by one or several coupling members 14 connectible to the adjusting slide 11 and the blade 5 in form-fitting and detachable fashion.

Abstract: Adjustable blades for wood chippers and cutters include one or more blades of selected length, thickness and width, fitted with one or more bevelled blade seats in the rear blade edge, which blade seats, in a first embodiment, receive corresponding bevelled inserts having threaded openings fitted with an insert mount screw and a pair of adjusting screws. The mount screws serve to seat the inserts firmly in the blade seats and reverse-manipulation of the adjusting screws in the inserts provides adjustment of the fit of the adjustable blades in a cutting or chipping head, to compensate for re-sharpening of the blades.

Abstract: An adjustment mechanism for a rotary disc chipper apparatus includes an axially displaceable shaft attached to a chipper disc, at least one gear disposed in relation to the axially adjustable shaft and a drive member engageable with the at least one gear to produce axial movement of the axially displaceable shaft and the chipper disc.

Abstract: A device for comminuting a residual sheet metal grid includes a grid supply system defining a grid supply plane and supplying the grid in a longitudinal direction; and a cutting assembly including a plurality of shearing teeth extending along a transverse direction transverse to the longitudinal direction. The shearing teeth can include a cutting edge, a cutting edge portion, or both a cutting edge and a cutting edge portion. The cutting assembly can be constructed and arranged to cut the metal grid along the longitudinal direction and the transverse direction.

Abstract: True zero-clearance cutting on a commercial scale is provided via a cutting area including a sacrifice material that is relatively softer than the cutter. One example is a cutting system which is capable of cutting a material such as, for example, tape or paper, into a fiber or powder. The cutting system includes a cutting blade, typically a rotary cutter, and a sacrificial plate or round bar contacting the cutting blade. The contacting portion has a zero clearance during the cutting operation. A metering mechanism is also provided which is capable of metering the material at a predetermined rate to the cutting blade. A mechanism is also provided for incrementally moving the sacrificial blade towards the cutting blade to ensure that the zero clearance is maintained between the cutting blade and the sacrificial plate, even when the sacrificial plate begins to wear down due to usage.

Abstract: A rotor assembly operable with anvil mechanism for comminuting waste wood and other fragmentable material has a rotating drive shaft with a series of rotors fixed in axially spaced relation thereon. A series of radially projecting hammers mechanisms are situated along the axis of the shaft and powered by the shaft. Fragmenting knives are removably secured to the leading outer portions of the hammer mechanisms. The hammer mechanisms include sidewisely reversible hammer legs having portions received by the rotors sidewisely contiguously.