Abstract: A cutting mill has a cutting rotor and a rotatable sizing means, arranged together with the cutting rotor in a common housing.

Abstract: An apparatus for reducing the oversized fraction of chips, especially the overthick fraction, which apparatus comprises a rotatingly fitted disc-like rotor part (1) to which is attached a number of chipping blades (2), and a fixed stator part (3) surrounding the rotor part (1), to which stator part is attached a number of counter blades (4), the blades (2) and counter blades (4) being arranged in chipping chambers (5), through which the chips to be reduced are arranged to travel outward with respect to the rotating shaft (6) of the rotor part (1). The counter blades (4) are fitted in a position substantially deviating from the radial direction of the rotating shaft (6), when viewed on the vertical plane with respect to the rotating shaft (6) of the rotor part (1).

Abstract: Method and apparatus for recycling plastic materials includes the movement of hoppers along cutting edges.

Abstract: The invention concerns a knife seat arrangement on a cutting shaft of a shredding machine, having a knife seat groove and cutting tool arranged therein, whereby the cutting tool, fastened so as to be detachable in the knife seat groove, adjoins a flat back surface on a flat front surface of a stop element and the stop element adjoins a corresponding end surface of the knife seat groove with a semicylindrical rear wall, whereby the stop element has a protrusion, situated in a form-locking manner in a corresponding recess of the groove bottom and directed inward, in the area of the groove bottom of the knife seat groove, said protrusion partially gripping under the cutting tool and adjoining it, so that the stop element is supported radially in the groove by the cutting tool.

Abstract: A strand cutting apparatus includes a fixed blade 2 having a blade edge extending perpendicularly with respect to the traveling direction of a strand, and a rotation blade 3 which is fixed to the tip portion of a rotation shaft 13 extending perpendicularly to the blade edge of the fixed blade 2 and has a plurality of plate-shaped blades 15 disposed radially at a front surface 3a. The rotation shaft 13 is supported by a supporting member 14 through a bearing mechanism 30 so as to be freely rotatable. The supporting member 14 is opposed to the one side of the fixed blade 2 with a clearance therebetween. The supporting member 14 is guided by a pair of guide plates 39 so as to be movable freely and linearly along the same direction as the axial direction of the rotation shaft 13.

Abstract: A strand cutting apparatus includes a fixed blade having a blade edge extending perpendicularly with respect to the traveling direction of a strand, a rotation blade which is fixed to the tip portion of a rotation shaft disposed in parallel to the traveling direction of the strand and has a plurality of plate-shaped blades disposed radially at a front surface opposing to the fixed blade, and a cover for receiving pellets thus cut and exhausting the pellets out of the apparatus. The cover is formed by a lower casing of almost funnel-shape and an upper casing of a semi-cylindrical shape covering the opened portion of the lower casing.

Abstract: A drum chopper in which cutting blades are locked in a form-fitting relationship to blade receptacles includes a locking structure between the blades and receptacles and a clamping piece. In one embodiment, the locking structure is integrally formed in the bearing surfaces of the receptacle and the mating surfaces blade by a latch projection in the receptacle and a lug in the blade. In another embodiment, the locking structure is formed by matching grooves in the mating surfaces of the receptacle and blade and a key inserted into the matching grooves. The clamping piece is inserted between the blade and a stop in the receptacle to secure the arrangement.

Abstract: A fixed blade and a rotary cutter are mounted in a supporting frame of a wire cutting apparatus. A clearance not larger than a half of a diameter of the wire is provided between a tip of the fixed blade and a tip of the rotary cutter. The rotary cutter has a channel provided between each couple of cutting edges of the rotary cutter and inclined to its rotational shaft. The fixed blade may be disposed in each of opposing side walls of the supporting frame, the fixed blades being shifted from each other in an axial direction of the rotational shaft.

Abstract: The invention relates to a method of producing a grinding roll in which a roll tire made from a highly wear-resistant bainitic cast material is applied to the basic roll body. In order to create a roll tire with particularly high reliability against fractures and with relatively high wear resistance and compression strength, the roll tire is produced from a ductile bainitic spheroidal graphite cast material having a breaking elongation of approximately 0.1 to 2.5% and a compression strength of approximately 1,000 to 1,800 Mpa.

Abstract: A high-speed crushing apparatus comprising two cutting edges one of which is stationary-type and the other rotary-type, a crusher disposed downstream of the edges including a shaft facing the rotary-type cutting edge and a plurality of cutters attached rotatably in the rotation axis direction and slidably to the shaft, and a guide plate disposed therebetween. The guide plate delivers fragments before the cutters and they are cut at a cutting angle determined by the position of the end surface of the guide plates. The apparatus is used suitably for disposal of scrap woods of various sizes and hardness.

Abstract: In an otherwise conventional star feeder, equipment longevity is greatly enhanced by providing a readily replaceable shear edge at the downstreammost (in the direction of rotor rotation) portion of the feeder housing inlet, adjacent the clearance between the rotating pocketed rotor and the housing. Preferably one or more plates defining the shear edge are mounted by fasteners, such as screw threaded fasteners, to the housing. Where the feeder is retrofit, with the replaceable shear edge, a recess may be formed in the housing to accept and position the one or more shear plates. A shear plate may have a number of openings elongated in a dimension intersecting the clearance adjacent the inlet, and by loosening or tightening fasteners the position of the plate shear edge may be adjusted with respect to the clearance to provide an effectively new shear edge when it becomes worn. At least the shear edge portion of the shear plate may be of a hard wear resistant material, e.g.

Abstract: A device for destroying used tickets includes a housing and a cutter which is removably mounted to the housing. The cutter includes an enclosure having a slot which allows tickets to enter. The cutter also has a rotating blade which cuts the tickets as they pass through the slot. Both the slot and the blade are inclined relative to the horizontal, the inclinations of the slot and the blade being mutually opposite. Thus, the ticket is subjected to an effective angle of shear which is equal to the sum of the angles of inclination of the blade and the slot. The blade is in geared engagement with the same motor that operates a plurality of rollers for advancing the tickets through the device. The cutter enclosure is detachably mounted to the housing, so that it can be quickly and easily removed for servicing. The cutter effectively destroys the incoming tickets, preventing them from ever being re-used.

Abstract: A machine for reducing materials such as logs, limbs, stumps and the like into small particles. A hold down and infeed roller in combination with a conveyor feeds the materials into a rotating rotor. The rotor has cutters mounted on its periphery and is rotated in a direction to produce an upward cutting action. The rotor partially reduces the materials into smaller particles. An anvil in combination with the rotor further reduces the particles into the desired size. A grate dictates the size of the materials to be discharged from the machine.

Abstract: A disposal system for cutting a needle/syringe (22) into small pieces. One or more motor driven rotating cutting blades (6) are located inside of a housing for cutting the needle/syringe (2) into small pieces. The pieces are deposited in a disposal tray (10) filled with a disinfecting solution, with the parts of the needle/syringe (2) automatically separating for recycling due to the specific gravity of the pieces. A pump (16) is provided for pumping the disinfecting solution, preferably a mixture of chlorine bleach and water, to the needle/syringe inlet (8) and cutting area. The disinfecting solution continuously disinfects the inlet (8), the needle/syringe pieces, the cutting blade (6) and the disposal tray (10). An automatic timer deeps the cutting blades (6) rotating and the pump (16) operating for a sufficient time to cut the needle/syringe (2) and disinfect the apparatus.

Abstract: Contrast cutter, particularly for forage shredding machines, comprising a monolithic bar that has a horizontal seat that is specially shaped, is obtained by milling, and accommodates a set of tool-locking inserts and tools made of sintered material capable of absorbing impacts and abrasions of various kinds, nonetheless allowing to partially replace the tools in case of breakage by loosening appropriate screw-type means for locking said strips to said monolithic bar that constitutes the contrast cutter.

Abstract: A rotatable forage harvester cutterhead having a shaft with a drum assembly coaxially secured to the shaft. A plurality of uniquely configured knives extend from the outer cylindrical surface of the drum, each with a cutting edge length less than half the axial length of the cylindrical surface. The knives are supported by assemblies having a solid mounting block secured to the outer cylindrical surface, which mounting blocks have a mounting surface extending at an acute angle to a radial plane extending from the shaft. Fasteners secure the knives to the mounting surfaces with the cutting edges of the knives extending in the direction of rotation of the cutterhead and generating a cylinder as the cutterhead rotates. The knife designs enhance efficiencies by providing a rake angle, formed by the bottom surface of the knife and the radial plane, that is greater than the acute angle.

Abstract: A reversible granulator includes double-edged cutting blades mounted on a rotor with each of the edges on an opposite side of the cutting blade. A pair of fixed bed knife members each have a pair of peak cutting edges with an intervening clearance space. One peak cutting edge in each bed knife cooperates with one blade cutting edge when the rotor is rotated in one direction to cut material, while the other peak cutting edge cooperates with the other blade cutting edge upon rotor rotation in the opposite direction.

Abstract: The housing of a waste cutter is divided in a central, vertical plane so that each housing section (23, 24) is tiltable about a respective hinge (26, 27) each preferably having a vertically extending hinging axis (26B, 27B) positioned at a rear bearing shield (10) in which a rear end of a cutting rotor (1) is rotatably mounted. The front end of the cutting rotor (1) is rotatably mounted in a front bearing shield (14). A clamping and locking device (33) pulls the housing sections (23, 24) into a closed position and holds the sections in the closed position. By opening the housing sections the entire interior is easily accessible for maintenance and cleaning work.

Abstract: A rock crusher comprises a pair of rotors spaced apart to define a throat therebetween and driven in opposite directions. Impactor bars on the rotors crush rock that is delivered to the rotors and passes the broken rock fragments through the throat. The rock crusher may be conveniently provided in a harvesting vehicle such as a potato harvester to crush rock that has been picked up with and separated from the crop. The rocks can be crushed to a sufficiently small size that they may be conveniently returned to the field surface, and thus the arrangement avoids the trouble and expense that would otherwise be entailed in collecting and disposing of the separated rock.

Abstract: A waste debarker 10 comprises a housing 12 in which is mounted a rotatable first cutting drum 14 and a rotatable second cutting drum 16 arranged in a longitudinally spaced relationship with respect to the first drum 14. The first drum 14 has a plurality of circumferentially extending flanges 24 spaced along the length thereof for supporting cutting teeth 26 thereon. The second drum 16 has a plurality of discrete lugs 34 arranged on its surface for supporting cutting teeth 26 thereon. The lugs 34 are offset with respect to the flanges 24 on the first drum 14 and extend in between the flanges 24 as the drums 14,16 are rotated. The second drum 16 is located at a higher elevation than the first drum 14. A method of debarking waste material is also provided.

Abstract: Apparatus for granulating strand materials including a stationary knife, a rotatable knife, and a drawing-in device. Part of the housing is pivotable to enable the drawing-in device to be easily removed for maintenance. An oblong hole on the housing is used to locate the drawing-in device.

Abstract: In order to simplify cleaning work in a granulator for strand materials with a feed device for taking up the strand material and conveying it to a subsequent shearing blade roller which rotates contrary to the direction of conveyance of the strand material and operates against a stationary anvil blade, wherein the feed device comprises a lower and an upper feed roller, of which at least one is drivable, wherein a wiper blade is associated with the lower feed roller, and wherein the wiper blade and the anvil blade are fixed in position on a carrier arranged between the lower feed roller and the shearing blade roller, it is suggested that the lower feed roller be movable between an operating and a non-operating position, wherein in its non-operating position the lower feed roller is arranged at a distance from the carrier and the wiper blade, and that the lower feed roller be lockable in its operating position.

Abstract: According to the present invention there are provided a method and an apparatus capable of disintegrating used paper into long pulp fibers without tearing it mechanically. In the apparatus, a wall surface having an undulating section is formed on an inner side of a gas flow path, with a current of air having a velocity component parallel to the wall surface and a velocity component perpendicular to and striking against the wall surface is allowed to pass through the gas flow path. Finely cut used paper pieces are allowed to pass through the gas flow path while being carried by the air current. The parallel velocity component of the air current is set at 40 m or more. An impeller is mounted within a circular casing body having an inlet port and an outlet port, and undulating teeth are formed on the inner peripheral surface of the circular casing body. The used paper, which is sucked in from the above inlet port together with the air current, is cut beforehand into pieces.

Abstract: A heavy-duty grinder is disclosed having increased durability and longevity due to a construction that produces low mechanical vibrations and noises during operation. The grinder includes a pair of end plates, preferably solid steel, and a pair of cutting blade rotors carried between the end plates, which are also preferably machined from solid steel. A direct in-line hydraulic drive of the rotors is provided by hydraulic motors and compression fittings which lock the hydraulic motors to the rotors without the need of keys or splines. In this manner, a drive and construction is provided which accommodates load reverses, shocks, and shears encountered during the grinding process without detrimental effect to the mechanical integrity of the grinder. Machined blade pockets having recessed heels are formed on the periphery of the rotors. Knife blades are mounted in the recessed heels for reinforcement and support against cutting. An anvil is disposed in a cutting nip of the rotors having hardened cutting edges.

Abstract: A cutter head includes a plurality of short cutter knives respectively mounted to flat rectangular trailing surfaces of angular blade retainers welded to the exterior of a cylindrical cutterhead drum. The knives each include a flat rectangular attaching flange, bolted to the trailing surface of a respective retainer, and a cutting or separating region configured in two different embodiments as a single trapezoid which is respectively coplanar with, or bent or twisted relative to, the attaching region.

Abstract: Residues from fibermat materials are broken down and separated into wood fibers and other fibers so that the fibers may be recycled. If the fibermat residues are not recycled, they present a disposal problem due to the uncured resins that become toxic waste. The fibermat residues are cut and separated by rotating cutting heads within a cutting and separating chamber. The wood fibers, being the heavier fibers, settle out, pass through a screen into a collection chamber and the lighter textile fibers are sucked out of the cutting and separating chamber with a vacuum system.

Abstract: The device for continuous mechanical shaping of a particulate material includes a housing; a pressing roll pair forming a pressing space and enclosed in the housing; a rotating element which can be a size reduction roll or a rotor with screen insert arranged below the pressing roll pair; a mechanism for displacing the pressing roll pair together with the rotating element relative to the housing and perpendicular to a rotation axis of the rolls and a mechanism for adjustably spacing the pressing roll pair and the rotating element relative to each other and perpendicular to the rotation axis. The pressing roll pair is advantageously tiltable between 0 and 90 degrees to the horizontal. The rolls are advantageously provided with milled grooves arranged so as to be parallel and extend at an angle of from 0 to 90 degrees to an axis of rotation.

Abstract: A rotary jaw crusher comprises a rotor, which carries at least one revolving jaw and rotates within a housing about a horizontal axis of rotation, and a stationary jaw, which is fixed to the housing and is substantially disposed above the descending portion of the flight circle of the rotor and rises toward the charging opening of the housing opposite to the sense of rotation of the rotor with a small inclination from the horizontal and is provided with crushing bars or the like, which protrude toward the rotor. In order to achieve a high efficiency and a low susceptibility to wear, crushing bars having sharp edges are provided on the stationary jaw and extend approximately normal to the axis of rotation of the rotor.

Abstract: An apparatus for shearing glass refuse such as bottles, containers, windshields, and the like into a glass aggregate. The apparatus comprises a rectangular housing having an inlet chute for loading glass, a Popper for initial breaking of the glass, a Breaker for shearing the glass into smaller pieces, and a Shearer for shearing the glass pieces into a glass aggregate. The glass aggregate is comprised of particles that are small, porous, and consistent enough in size such that it can be used as a filler in many products and also as a substitute for sand.

Abstract: Material shredding apparatus for reducing scrap vehicle tires to produce two sub-products of rubber and of rubber free steel wire in which the apparatus has a shaft driven set of blocks in which each block has cutting teeth in circumferentially spaced relation, the respective blocks are keyed to the shaft so the cutting teeth on the blocks are circumferentially distributed along the shaft at 15.degree. spacing to assure that the cutting teeth perform a cutting function one at a time to avoid excessive power consumption and the material being shredded is distributed along the set of blocks on the shaft to reduce local areas of wear.

Abstract: A disc feeder for delivering material in controlled amounts to utilization equipment. The disc which carries material to a material discharge opening is disposed at an angle to the horizontal and the shearing baffle which controls the amount of material carried to the material discharge opening is movable from its position during normal operation to a position remote from the disc, whereby during unloading of the storage hopper the material discharges freely and quickly to a storage container. A control valve selectively directs material to one delivery conduit which leads to the utilization equipment and a second delivery conduit which leads to the storage container. The apparatus has an interlock mechanism which prevents moving the shearing baffle while material is being conducted to the utilization equipment and prevents moving the control valve to direct material to the utilization equipment while the shearing baffle is at its remote position.

Abstract: An elongate object cutting apparatus which can cut an elongate object finely and at a high speed while production of vibrations or noises is reduced is disclosed. The elongate object cutting apparatus is suitably used to cut a flexible elongate object such as a terminal carrier having a plurality of terminals connected in the form of a chain in a process of manufacturing a wire harness or a wire or an electric wire for use with a wire electrode electric discharge machine, into small pieces. The elongate object cutting apparatus comprises a fixed blade secured to a frame, a rotary blade having a plurality of knife edges on an outer periphery thereof and mounted for rotation on the frame such that the knife edges thereof successively contact with the fixed blade during rotation thereof. While the rotary blade is rotated, an elongate object is supplied between and cut by cooperation of the fixed blade and the rotary blade.

Abstract: An apparatus for reducing and separating a mixed makeup of material in which a principal mill for grinding, ripping and tearing the subject material is provided with a magnetic separator for extracting the magnetic fractions from the non-magnetic fractions and separately discharging the magnetic fractions which are separately collected from the non-magnetic material. The apparatus may employ a preliminary material reducing unit to reduce the material to a suitable size for processing in the principal mill, as this feature is useful to reduce such bulky material as vehicle tires which are the usual source of magnetic material that needs to be separated out.

Abstract: A disposal system 1 for waste material comprising independently integrated shredding 2, storage 3, and furnace 4 systems. A first transportation system 5, controlled by the shredding system, transports material to the storage system which has capacity that permits repeated shredding cycles with no furnace cycle. A second transportation system 6, controlled by the furnace system, removes material from the storage system at a rate satisfying the output heat demand 7 of the furnace system. The shredder 19 has a hopper 20 with three vertical sides, 9 10, and 11, and a fourth inclined side 12 with a blade 13 at its lowest end. A single rotating member 14 cooperates with the blade. A pusher 15, acting along the inclined side, dislodges any bridging in the hopper. A grate 16 receives the shredded material and cooperates with the rotating member for further shredding. There is a magnetic separator 17.

Abstract: A method and an apparatus is used for forming airlaid articles such as diapers, sanitary napkins and the like. The apparatus includes an anvil drum with die cavities formed therein. The die cavities have foraminous bottom walls for drawing a stream of air-entrained fibrous fluff therethrough. A first material layer is laid on the anvil drum for covering some of the die cavities and is then deformed into the cavities. After a belt with opening corresponding to the die cavities has been laid on the first layer for protecting the sealing areas from fluff, an air stream with fibrous fluff is drawn through the first layer and through the foraminous bottom walls, thus pulling the first layer into the die cavities and causing the fluff to be deposited in the cavities. A second material layer is placed on the deposited fluff and glued or crimped to the first layer. A die-cutting roller then cuts the airlaid articles into the desired shape before the articles are removed from the anvil drum.

Abstract: A transportable machine reduces vehicle tires to a fine powder size suitable for incorporation into new articles of manufacture. An upper infeed assembly is mounted to a frame above a spring-loaded upwardly biased lower infeed assembly. A splayed tire is fed between guiderails on the upper and lower guide assembles and is driven along by upper drive sprockets and rides on lower idler sprockets. The tire is fed by a tire-feed positioned above a cutter bar and biased downwardly to clamp a cut splayed tire against the cutter bar and to feed the tire over the bar and into cutter blades mounted on a rotary blade assembly. The rotary blade assembly has a shaft mounted for rotation about an axis to the frame and has a plurality of cutter blades spaced about the shaft periphery. Each rotary cutter blade has a saw-toothed profile with triangular teeth. The tips or the moving blades are slightly spaced from the cutting edge formed on the fixed cutter bar.

Abstract: The chopping device includes a rotary cutting tool having peripheral cutting teeth with gaps between the teeth, which cooperates with an opposing knife element to chop up a workpiece and a clearing device which enters into the gaps between the teeth during operation to remove chopped up pieces of the workpiece from the gaps. To provide an economical and strong chopping device the opposing knife element and the clearing device are provided with a single rotatably driven counter tool. The single counter tool has a rotation axis parallel to the rotation axis of the cutting tool and displaced radially from it, a rotation direction opposite to that of the cutting tool and a rotation speed which is maintained in a fixed relationship to that of the cutting tool.

Abstract: A materials grinder for comminuting large "chunks" of aggregated material having a conveyor for transporting quantities of materials, including large "chunks" thereof, and a grinder having a large chamber for receiving and grinding the material into smaller and generally uniform sized particulates wherein the grinder is comprised of upper and lower grinding drums to said lower grinding drum, the guide means including breaker bars for controlling the flow of materials adjacent said grinding means and for determining the size of the particulate ground at each grinding drum.

Abstract: A rotary grinder employing blades is disclosed, which comprises a substantially cylindrical rotor, on the periphery of which is mounted, along certain regularly spaced apart generatrix lines, a plurality of identical blades of short length with respect to the length of the rotor, wherein the blades are disposed at a rate of one blade per generatrix line and so that two blades located on adjacent a generatrix lines present therebetween, longitudinally, a distance approximately equal to or greater than a length of blade.

Abstract: A granulator which has a rotor knife seat having a plurality of tapped holes and a clamp to secure a knife to the rotor seat, is set forth. The granulator further includes a floor formed in the rotor seat and a trapezoidal shaped knife having a rear wall. The knife has an upper surface and a forward sloping surface, the sloping surface terminating at one end in a cutting edge and intersecting at its other end the upper surface and defining at said intersection a knife alignment edge. An adjustable clamp having a plurality of bolt holes is also provided. The clamp may be moved with reference to the rotor seat within the limits defined by the diameters of the bolt holes.

Abstract: An apparatus for reducing various material to smaller sizes emphasizing large volume with long pieces. The apparatus has a frame case, with an infeed and outfeed, within which at least one rotor with at least one radially tilted forward cutter bar cuts the material against one anvil. A grate is used to size the material to final product dimensions. The frame case is angularly split. Where more than one rotor is used, they are radially offset.

Abstract: A vacuum system is provided for extracting film, such as microfilm, from reusable film cassettes. Microfilm which is wound on reels that are housed within the cassette casings can be rapidly withdrawn for shredding or for other use or disposal. One or more cassettes is positioned on a support for the cassette cases such that the axis of the reel within the cassette is vertical. A reel support projects upwardly from the case support so that the reel is lifted very slightly within the cassette case and does not rest upon the case. The accessible end of the microfilm on the outside of the reel is led to a vacuum source which applies a vacuum to the film. The reel is freely rotatable atop the reel support within the cassette so that the vacuum is able to draw the entire length of film off of the reel and out of the case through the film access opening. The microfilm is then normally shredded using conventional means.

Abstract: An oil mill/crusher includes an external casing having a cylindrical chamber, a rotor positioned in the chamber and eccentric with respect to the latter, a plurality of blades, constrained at one end to a central axial pin of the chamber and extended through the rotor in the chamber in grooves formed in rotating elements provided in the peripheral part of the rotor. The blades rotate around the pin. The eccentricity between the rotor and the chamber causes a continuous variation of a blade projection with respect to the peripheral part of the rotor operating the mill. The width of each of the blades is substantially equal to half the width of the width of the chamber. The blades alternatively rest on the right and left sides of the chamber, in order to avoid their jamming against knurled walls thereof.

Abstract: The circular housing of a fiberizer mill has a rotationally driven shaft on which there is a disk haivng a conical face and spaced apart rows of teeth. A stationary disk has on its face a multiplicity of annular grooves which define teeth. There is a small gap between the tips of the rotary teeth and the tips of the stationary teeth. The gap extends at an acute angle relative to vertical plane passing perpendicular to the shaft axis so that particles being disintegrated experience a horizontal component of force. The result is that particles, after having been exploded by striking the teeth on the stationary disk, are emitted generally radially outwardly from the gap. Hammer bars on the periphery of the rotary disk are surrounded by a toothed circular breaker plate member concentric to the orbital path of the hammers on the rotary disk.

Abstract: A granulator for waste material having rotating and bed knives respectively mounted for repeated detachment, sharpening and reinstallation with unskilled labor. Accurate predetermined knife gap distances are maintained by the configuration of surfaces on each rotating knife, whereby a cylindrical surface thereon forming the cutting edge is coincident with a cutting cylinder having a fixed location in the frame. Thus the cutting radius is unaffected by sharpening.

Abstract: Multiple size-reducing actions of heavy solid waste are carried out during each unidirectional rotation of a ballast-weighted drum rotor means having impact-cutter bar means projecting in fixed position about its drum surface. Feedstock contacts the rotating rotor means and is propelled against an anvil surface. Frangible materials are split and/or otherwise fragmented during such initial stage. Continued rotation cuts or crushes larger feedstock product with maximum dimensional aspects determined in part by the radial projection of the impact-cutter bar means as the latter move into a zone defined by a grate partially circumscribing the rotor means. Intermediate product in the space between the rotor drum and the grate passes through apertures in the grate or is driven into and sheared at such apertures which determines maximum cross-sectional dimensions of size-reduced product. The configuration of such grate apertures facilitates shearing of intermediate product.

Abstract: A grinding device for medical waste includes a driving device, a hollow housing, a shaft vertically journalled in the housing driven by the driving device. A first bowl-shaped grinding container is coaxially provided in the housing with respect to the shaft, and includes a first wall having a plurality of through holes. A first cutting blade extends radially inward from the first wall. A second cutting blade is transversely provided above the first cutting blade and is adjustably mounted on the housing. The second cutting blade is cooperatively associated with the first cutting blade. A second bowl-shaped grinding container is coaxially provided in the housing, with respective to the shaft, around the first grinding container. The second grinding container has a second wall with a plurality of through holes. A third cutting blade extends downward from a radial inward flange on the second wall.

Abstract: A poultry pulverizer comprises a portable framework with a vertically oriented hopper secured thereto having an open top end and a lower end. A horizontally disposed shear wheel is positioned at the lower end of the hopper where it forms a bottom wall. The shear wheel has a downwardly extending vertical shaft journaled to the framework for rotation by a motivator that rotates the shaft and in turn the shear wheel. At least one cutter blade mounted on an upper surface of the shear wheel has a slightly raised cutting edge. A stationary anvil bar connected to and extending across the lower end of the hopper has an adjustable height slightly above the cutting edge of the cutter blade whereby poultry introduced into the hopper through the open top end drops by gravity to the lower end where it is pulverized by the shearing action of the rotating cutter blade and the stationary anvil bar. The pulverized poultry is discharged from the hopper through an opening in the shear wheel located adjacent to the cutter blade.

Abstract: A granulator knife having opposed reversible cutting edges. The knife is seated in a rotor or a bed and secured by a clamp. When the first knife edge is worn, the knife may be reversed. Adjustment of the knife position is not necessary.

Abstract: The invention is characterized in that at least one tray for the stack(s) of paper is arranged on the top of the document shredder. As a result, the document shredder requires a smaller installation area. Futhermore, the stability of the document shredder is improved. Since the stacks of paper are positioned at working height, the document shredder is extremely convenient to operate. The design according to the invention also allows a cost saving.