Abstract: An automatic food waste processing system includes: a conveying apparatus for removing salt and bad odors by supplying washing water, and for facilitating withdrawal of foreign materials; a crushing apparatus for effectively crushing the food waste while separating and removing the metallic material; a drying apparatus for drying the food waste and removing bad odors during the drying process; a cutting apparatus for cutting the dried food waste into feed chips and for separately collecting sludge; and washing water removing apparatus for enabling the automatic washing of the inner portion of the system. The food waste processing including a series of different waste processes enables manufacturing of feed chips from its by-products and processing of larger amount of food waste without environmental pollution or contamination.

Abstract: An apparatus for cutting a food product is disclosed including a stationary structure with a food product guide surface for guiding a food product along a path of travel, the apparatus having a knife wheel rotatable about a knife wheel axis, the knife wheel having at least one knife blade and located such that rotation of the knife wheel about the knife wheel axis causes the knife blade to cut through the food product as it moves along the path of travel. The apparatus also includes a knife wheel support which rotatably supports the knife wheel, the knife wheel support being pivotally attached to the stationary structure so as to pivot about a pivot axis extending substantially parallel to the knife wheel axis, such that the knife wheel axis is movable along an arcuate path about the pivot axis.

Abstract: Industrial shredders containing a novel shredding head and novel stripper blades to prevent or reduce the possibility of jamming the shredder during operation. The Industrial shredder requires the use of a stripper blade which is removable and replaceable without the use of tools, or without having to tear down the shredder. The shredders are typically used to reduce industrial solid waste such as cardboard, rubber, metal, plastics, paper, and the like to small particles or pieces.

Abstract: A comminuting apparatus has a housing and a crushing area. The housing includes left and right bearing plates, left and right reinforcing, bearing and holdback plates, each with clearing and crushing prongs. The crushing unit includes left and right crushing shafts which are rotationally supported by the housing are interconnected to rotate in opposite directions, synchronously. Each crushing shaft includes a number of radially-extending tool carriers having tool heads which carry clearing devices and front and rear wear inserts, in seats within the tool heads. The crushing unit can be configured to provide clearing spacing between adjacent clearing devices of adjacent tool carriers, or to provide an overlap thereof. The clearing and crushing prongs are arranged between each of the tool carriers. An intermediate crushing area is formed between the left and right crushing shafts.

Abstract: A shredding apparatus is described which comprises at least one module of a pair of counter-rotating cutting assemblies located in spaced apart parallel relationship wherein each assembly comprises a driving shaft upon which is mounted one or more cutters. The cutters are provided with a pair of cutting surfaces or edges which are located at either end of the cutter. In the one module the cutting surfaces of adjacent cutters mounted on adjacent shafts are in contact with each other over at least a part of the circumference of the cutting surfaces so that when the cutters counter-rotate, material fed between them is cut by the action of the counter rotating cutters. An anti-wrap member is associated with a driving shaft to prevent material being cut from wrapping around the shaft or cutter.

Abstract: A food processing arrangement for mashing various food products to provide a food of the nature of West African fufu. The food processor has a base unit with a rotation producing structure. A mashing unit having a roller is removably mounted on the base unit and is driven by the rotation producing structure and a bowl is removably mounted on the base unit and the roller of the mashing unit is positioned in the food receiving cavity of the bowl. The roller has driving engagement with the inside surface of the bowl so that the roller rotates the bowl about the bowl axis as the roller rotates about the roller axis. Food in the food receiving cavity is mashed between the inside surface of the bowl and the outer surface of the roller. A scraper is provided to scrape food from the outside surface of the roller and the inside surface of the bowl and is positioned to direct the food so scraped to a predetermined location where the mashed food may be removed from the bowl.

Abstract: A rotor shear for comminuting particularly bulky waste materials is formed by two cutting rotors (2) combing each other, disposed parallel to each other, supported in a housing (1), and each driven in an opposite direction. Each cutting rotor (2) comprises spacer rings (4) and rotor disks (5) furnished with cutting teeth (6). A face of a front flank (61) of at least one cutting tooth (6) is furnished with geometrically staggered and/or angled partial faces (65). The spacer rings (4) and the rotor disks (5) are disposed on shafts (3). Wear disks (7) are coordinated to outer rotor disks (5) with corresponding circumferences and are connected to the shaft (3). The cutting teeth (6) operate against the circumference of the spacer rings (4) disposed between the rotor disks (5). At least one support device/stripper device (8) is coordinated with at least one shaft (3), where support parts (81) and stripper parts (82) of the support device/stripper device (8) are functionally separated.

Abstract: A fiber processing machine includes a fiber processing component and a material-removing roll supported to be in contact with the fiber processing component for removing material therefrom. The material-removing roll includes a radially deformable resilient circumferential surface and a material-removing substance carried at least indirectly by the resilient surface.

Abstract: As the stripper (20) for the cutting mechanism (13) of a document or paper shredder (11) is provided a plastic part, which can be injection moulded in one piece and entirely surrounds the shaft (18) of the cutting rollers (15) in the gap (17) between the cutting disks (16). In the overlap area (23) between the two cutting disks is provided a thin, flexible stripper web (24), which makes it possible to open the separation point (36) of the stripper separated with respect to the flexible circumferential portion (24) to such an extent that it can be snapped over the shaft (18). The stripper can be manufactured as a single component or as a stripper block with several to all the strippers of a cutting roller. This leads to a low friction stripper preventing cut particles winding round the shaft.

Abstract: A shredder has a cutting cylinder with a cutting shaft and a plurality of spaced-apart cutter disks mounted on the cutting shaft. The shredder also has an articulated top blocker rotatably mounted above the center axis of the cutting shaft.

Abstract: A document shredder (11) has a cutting mechanism (12) constructed as a chassis and in which the cutting rollers (16) are mounted so as to contrarotate. They are designed as disks cutting on both sides for particle cutting. Over the entire length of the cutting rollers (16) extend stripper elements (28, 29), whose individual strippers (31) are combined into a block by means of longitudinally directed connecting elements (33). As they engage by more than 180.degree., almost 270.degree., around the shaft cross-section (18), two stripper elements (28, 29) are connected in mutually fitting manner in the circumferential direction. The stripper elements can be made in one piece from injection moulded plastic and are also used for the connection of the two side walls (14, 15) of the cutting mechanism (12).

Abstract: A scraper assembly for use with an associated coal pulverizer or as part of a coal pulverizer having a vertical axis with a central hub that rotates during normal operation of the pulverizer. The scraper assembly includes a bracket dimensioned and configured for attachment to the hub of the coal pulverizer that rotates in the normal operation of the coal pulverizer. The apparatus also includes a shaft extending from the bracket. The shaft is substantially horizontal and the apparatus also includes a scraping element pivotally mounted on the shaft. A torsion spring biases the scraping element with respect to the shaft. In some forms of the invention the scraping element comprises a first and second journals engaging the shaft at axially spaced points and the scraping element further includes first and second arms extending radially away from the shaft that are respectively fixed to the first and second journals.

Abstract: An apparatus for comminuting solid waste material comprises a frame having an enclosure with an entrance for initially receiving solid waste material; a set of overlapping scissor rolls rotatably mounted within the enclosure for shearing the waste material into subdivided pieces when the material passes between the scissor rolls; a feed roll rotatably carried by the frame for directing the waste material to the scissor rolls; and a separator screen carried by the frame in association with the at least one of the scissor rolls and having a plurality of apertures of a predetermined size for separating pieces having a size less than the predetermined size to pass therethrough to a shear outtake manifold for separation while preventing large subdivided pieces having a size greater than the predetermined size from passing therethrough.

Abstract: An apparatus and method for smashing empty glass receptacles into predetermined sizes to facilitate the collection, storage, transportation and recycling of glass chard and/or cullets is disclosed. The apparatus includes a cabinet or housing that is comprised of two sections. The upper section has two compartments, a rear compartment that contains the motors, gears and electrical wiring. The upper front section has a hinged lid that can be opened to expose a loading trough. The lower section is sealed from the upper section by means of a partition that contains a rotary tray door that remains in the closed position until the upper lid has been closed and the safety circuit activated and the hammer mill blades have reached optimum revolution speed. The rotary hammer mill blades are attached by means of the vertical drive shaft at the under side of the upper and lower chamber partition just below the slideable tray door. The lower chamber also holds the glass chard or cullet collection container cradle frame.

Abstract: A method and an apparatus for sharpening the surface of a grindstone for a pulp grinder. In the method a high-pressure water jet is obliquely projected on the surface of the grindstone for detaching bonding material between abrasive grains, without excessively wearing a medium between grinding segments.The apparatus comprises a nozzle, arranged to spray water obliquely onto the surface of the grindstone and a high-pressure pump for feeding high-pressure water through the nozzle. The nozzle is arranged to be moved by transfer means in the axial direction of the grindstone while the grindstone is being rotated.

Abstract: A material comminution device has a housing. Cutters extend within the housing and move toward each other in a scissor-like manner. The cutters extend parallel to each other along a bottom portion and diverge along a top portion, and consist of comb-like rows of spaced blades that mesh with each other. The blades carry out at the same time a shearing movement and a swivelling movement around an axis by means of a crank mechanism.

Abstract: A hammermill including a main shaft rotatable about a main axis passing longitudinally through the main shaft. Connected to the main shaft and spaced longitudinally along the main axis are a plurality of substantially parallel plates. Pivotally mounted between the plates along pivot axes parallel to and spaced from the main axis are a plurality of free swinging hammers for crushing material. A plurality of sealing members are positioned along the pivot axes and compressed between the hammers and the plates.

Abstract: A shredding apparatus includes rotating shredder rollers with parallel axes. Each roller is formed by numerous toothed discs with spaces between the discs. Two or more of the rollers are cooperating rollers with the discs of the cooperating rollers being offset so that the discs of each of the cooperating rollers can enter the spaces between the discs of another one of the cooperating rollers. Some of the rollers cooperate with curved grid sectors that are coaxial with the rollers. Curved, non-perforated and/or perforated plate sectors are coaxial with a pair of cooperating rollers rotating in opposite directions, the plate sectors being coaxial with and having a greater radius than the cooperating rollers and extending around the cooperating rollers for an arc. Blades are provided along one or more edges between the perforated and/or plate sectors.

Abstract: A tire-shearing machine capable of varying the size of tire chunks segmented. A primary shear segments a tire, along a longitudinal axis, into a plurality of longitudinal strips and feeds the strips into a secondary shear. The secondary shear segments, along an axis perpendicular to the longitudinal axis, each of the longitudinal strips into a plurality of chunks. The speed of each of the shears is controlled independently of the other, and on-the-fly, to allow producing tire chunks to a desired size.

Abstract: A container cutting assembly includes first and second parallel counter-rotatable shafts defining first and second axes. A first and second plurality of cutting wheels are positioned on the first and second shafts, respectively, interleaved with cutting wheels on the other shaft. Each cutting wheel has several cutting teeth, each tooth having a leading surface and two trailing surfaces. The second trailing surface has a preselected length. The leading surface and first trailing surface define a cutting edge, which is skewed with respect to the respective axis, defining a cutting point. Each cutting wheel is positioned on the shaft such that each cutting point of each tooth passes between two second trailing surfaces of cutting teeth disposed on either side approximately midway along the preselected lengths thereof. The cutting points of corresponding teeth in each plurality of cutting wheels align in lines which are parallel and coplanar to the respective axes.

Abstract: A crushing machine is disclosed which comprises a casing, a coarsely crushing blade which crushes scrap into coarsely crushed pieces, and a finely crushing blade which crushes the coarsely crushed pieces into finely crushed pieces. The coarsely crushing blade and the finely crushing blade are rotatably disposed in the casing, and jetting holes are formed in the coarsely crushing blade to jet compressed air radially outward from the coarsely crushing blade. Also, the jetting holes are connected to a compressed air passageway which is formed in the rotary shaft of the coarsely crushing blade. In addition, a stationary jetting hole is formed in the wall of the casing to jet compressed air towards a gap between the coarsely crushing blade and the finely crushing blade.

Abstract: A waste paper processing system includes an upper shredding portion and a lower compressing portion. The shredding portion includes to horizontally parallel shafts mounting thereon a plurality of circular blades. The shafts are rotated to spin outwardly of a space between the shafts from a paper feeding direction. Presser arms are provided for retaining paper from above during shredding and stopper arms and a filter portion are provided below the blades to assure the paper is shredded sufficiently. After shredding the paper falls into a hopper and is introduced via a rotor to the compression portion. In the compression portion a screw is rotated for urging the shredded paper into a compression tube the tube as a narrower portion at the lower end for assuring sufficient compression of the shredded paper. In addition, water is added to the shredded paper in the upper side of the compression tube for binding the shredded paper together as pulp.

Abstract: An apparatus for plasticizing thermoplastic synthetic plastics material, in particular scrap material, comprises a plasticizing screw (18) bearingly supported within a housing (21), to which screw the synthetic plastics material to be plasticized is supplied through a feed opening (16). At this feed opening (16) a comminuting means in the form of two shafts (3, 4) disposed parallel to each other and parallel to the axis of the screw (18) is provided, each of the shafts (3, 4) being provided with a plurality of pinned-up disk-shaped comminuting tools (8). Between each two neighboring comminuting tools (8) a circular spacer disk (9) is disposed and stationary knives (11) engage into the gaps between adjoining comminuting tools (8), the flanks (15) of which knives extend tangentially with respect to the periphery (13) of the spacer disks (9).

Abstract: A paper shredding machine having a top housing unremovably sealed to a lower housing. The top housing has upper teeth integrally formed on its inside surface and the lower housing has bottom teeth integrally formed on its inside such that when the top housing is joined with the lower housing and sealed, the upper teeth are unremovably joined with the lower teeth to define a continuous stripper to strip shredded material from the cutting area of the shredding mechanism. The paper shredder is made by providing a top and bottom housing with the top housing having upper teeth and the bottom housing having lower teeth. The top and bottom housings are joined and passed through an ultrasonic welding apparatus to fuse the top housing to the bottom housing and the upper teeth to the lower teeth.

Abstract: A waste comminutor includes two cutting assemblies which include alternating cutter and spacer elements. The two cutting assemblies are intermeshed together so that portions of the cutter elements of each cutting assembly overlap. Surface interruptions, in the form of depressions, recesses or the like are located in the overlapping portions of the cutter elements and define waste particle receiving pockets having a shearing surface against which waste particles may be further comminuted.

Abstract: The comminuting machine includes a housing provided with a rotary impact mechanism. A conveyor conveys infed material to the rotary impact mechanism which cooperates with an impact plate in disintegrating the infed material. A comb-like further comminuting structure follows the impact plate in the rotary direction and is arranged laterally of the rotary impact mechanism. The comb-like further comminuting structure extends over part of a discharge opening of the housing and is linked to a rear end of the impact plate. Displacement devices are provided for displacing the comb-like further comminuting structure between an operative position in which the comb-like further comminuting structure extends laterally of the rotary impact mechanism, and an inoperative position in which the comb-like further comminuting structure is pivoted away therefrom. Adjusting devices are provided for adjusting the comb-like further comminuting structure relative to the rotary impact mechanism.

Abstract: A cutting mechanism for a paper shredder includes a pair of cutting rollers, two pairs of stripping plates associated with the pair of cutting rollers, respectively, and arranged between respective cutting discs of cutting rollers, and a plurality of rods extending in the stripping plates for supporting same, with the stripping plates being arranged in upper and lower portions of the cutting mechanism with a clearance between adjacent plates, which clearance can be varied within a relatively large range.

Abstract: A waste paper processing system includes an upper shredding portion and a lower compressing portion. The shredding portion includes to horizontally parallel shafts mounting thereon a plurality of circular blades. The shafts are rotated to spin outwardly of a space between the shafts from a paper feeding direction. Presser arms are provided for retaining paper from above during shredding and stopper arms and a filter portion are provided below the blades to assure the paper is shredded sufficiently. After shredding the paper falls into a hopper and is introduced via a rotor to the compression portion. In the compression portion a screw is rotated for urging the shredded paper into a compression tube the tube as a narrower portion at the lower end for assuring sufficient compression of the shredded paper. In addition, water is added to the shredded paper in the upper side of the compression tube for binding the shredded paper together as pulp.

Abstract: A cutter and stripper assembly of a shredder has a lower housing part injection-molded with a receptacle in which an injection-molded stripper block is received. The stripper block has fingers reaching between the blades of the blade shaft and braced by ribs injection-molded on the upper part of the housing.

Abstract: The present invention thus relates to a scraping arrangement in food processors of the kind in which the processor is a cutting appliance which cuts or chops the foodstuffs to be prepared, and which includes a container (2) fitted with a lid (3) which has an inlet opening (4) through which foodstuffs can be introduced into the container as the appliance operates, wherein the container (2) is stationary while the appliance operates and in which rotating cutting means are located above the container bottom.

Abstract: A paper shredder includes a pair of cutting rollers and individual strippers mounted on support rods. The strippers extend essentially from the lower and upper outer sides of the cutting mechanism between the cutting disks to the respective roller body. The strippers preferably have crowned stripper portions. A stripper is arranged at the lower side of the cutting mechanism in each gap formed between two adjacent cutting disks by the comb-like engagement of a cutting disk of the opposite cutting roller. Individual auxiliary strippers engaging in every fourth to fifth cutting roller gap are arranged on the upper side of the cutting mechanism. The support rods for the strippers are arranged from the respective outer diameter of the cutting disks at a distance to form openings, wherein the distance is preferably two to ten times the width of the cutting roller gap.

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 paper shredder with a cutting mechanism and strippers that are formed on the bottom base of the shredder. The strippers have an arcuate shaped portion to substantially surround the space between adjacent cutting disks to prevent shredded paper from accumulating and clogging the cutting mechanism. The paper shredder has cutting disks with teeth that include a piercing tooth and a flat tooth.

Abstract: A sugarcane rind-slitting apparatus having a pair of counter-rotatable cylindrical assemblies each with a multiplicity of axially-adjustable intermeshing disks and flexible spacers, and fixed comb members between disks to guide the rind and rind strands to facilitate passage of rind and rind strands. Certain preferred embodiments include axial recesses on the sides of the disks near their peripheries to provide other advantages, including self-sharpening.

Abstract: A knife shaft stripping device is described, in which the stripping fingers (5) are made of plastic and are injection molded in one piece either with a housing top (7) or with a housing bottom (8), and in which supporting stays (6) are associated with the stripping fingers (5), which likewise are made of plastic and injection molded in one piece with the mating housing bottom (8) or housing top (7). Bearing surfaces (12) for the knife shafts (3) are also disposed in the housing top (7) and in the housing bottom (8), and the stripping fingers (5) and supporting stays (6) are provided with abutment surfaces (9, 10) which contact one another when the cutting mechanism (2) is assembled such that the stripping fingers (5) are supported.

Abstract: In order in the case of a chopper for waste material and more particularly for garden waste, comprising a feed hopper and a roller-like cutting rotor arranged at a lower end of the hopper and adapted to be driven for cooperation with a stationary mating knife arrangement, to achieve quiet operation in a manner which makes the chopper easy to use and provides for a long working life, the roller-like cutting rotor is constituted by a roller-like cutting rotor whose axis extends transversely in relation to the axis of the hopper, and which bears circumferential teeth between which gaps are provided, which during operation are cleared by a clearing spud adapted to plunge into them.

Abstract: A tire shredder having a stripper plate to prevent feed from wrapping about a shaft on which feeder discs are mounted.

Abstract: There is disclosed a tire shredding machine of the type having oppositely rotating rotors mounting interdigitated cutting elements, which is particularly adapted for use in the further reduction of relatively large size rubber chips presently produced by use of commercially available primary tire shredding machines. The present machine incorporates an improved segmented knife retention assembly and a stripper or knife cleaning assembly.

Abstract: A device for processing materials such as rock, ore, clay, bulk materials and agglomerated pulverized materials includes at least two tools having working surfaces thereon of at least partially circular cylindrical cross section. The tools are oriented such that the working surfaces thereof are in opposed horizontally spaced relation, and the device includes a mechanism for moving at least one of the tools with an up and down pendulum motion about the respective axis thereof. The tools include upper surface portions and lower surface portions, and the upper surface portion of at least one of the tools has a plurality of comminuting projections thereon for preprocessing relatively large sized materials. The lower surface portions of the tools are substantially smooth, and they are positioned in closely spaced relation for processing materials therebetween to form a finely milled and product.

Abstract: A shredding mechanism having a continuous stripper to strip shredded material from the cutting surface of the shredding mechanism and having a bearing support for rotatably carrying the shafts of cutting cylinders. The stripper consists of upper teeth integrally formed on the inside surface of a top housing and bottom teeth integrally formed on the inside of a bottom base. The bearing support comprising two bearing plates integrally formed onto the inside surface of the bottom base. The bearing plates have semicircular indentations to rotatably carry the shafts of cutting cylinders.

Abstract: A shredding machine is for shredding paper or the like and includes a pair of parallel, spaced-apart shafts which rotate in opposite directions. Each of the shafts includes a plurality of cutting discs mounted thereon for rotation therewith. The cutting discs on one shaft extend between the cutting discs on the other shaft for producing cooperative longitudinal cuts of paper passing therebetween. The cutting discs include a cylindrical outer surface which is interrupted by a plurality of notches. Each of the notches has a trailing transverse surface which intersects the cylindrical outer surface at a transverse cutting edge to form a cutting angle therebetween. The cutting angle is less than forty degrees. The cutting discs on one shaft are oriented with respect to the cutting discs on the other shafts to cause the cutting angle on each of the cutting discs to be aligned with the cylindrical outer surface of the adjacent cutting discs on the outer shaft just prior to overlapping thereof.

Abstract: A shredding device uses a plurality of interleaving, counter-rotating discs to reduce sheets of material into longitudinal strips. One or more notches, formed in the periphery of each disc, cut the longitudinal strips into segments. Deflectors disposed in the spaces between each disc clear unwanted material from between the discs. When jammed, the rotation of the discs reverses, and the notches bite into the jammed material to help remove it from between the discs.

Abstract: A machine is capable of cutting into small pieces the thin wall material of a plurality of disposable containers such as plastic bottles or metal cans fed in a first direction one at a time to a cutting section. The cutting section includes a pair of parallel shafts mounted for rotation in opposite directions about the center axes thereof. Each of the shafts rigidly supports a plurality of overlapping cutting wheels for rotation therewith. Each cutting wheel has a plurality of identical cutting teeth thereon having an apex at the maximum diameter and a root at a root diameter of the cutting wheel. Each cutting tooth has a leading surface and a trailing surface which meet at the apex to form a straight edge at the maximum diameter which is parallel with the center axis of the shaft.

Abstract: In a cutting mechanism for shredders fabricated in compact construction it is provided as far as the arrangement of support rods for the wipers is concerned, that within each of the pair of wipers (3, 4) the base parts (3a,4a) approach each other to such an extent that the second support rod (6) located there serves as a common support rod (6) for the one (3) as well as the other (4) of the respective pair of wipers (3, 4).

Abstract: A pulverizing mill for reducing mineral samples includes a cowl arranged about pulverizing anvils and respective sample and air inlets pass through the cowl to the anvils. The cowl forms a confinement about the anvils so that during pulverizing operations the pulverized samples is directed thereby to a suitable receiver. During subsequent clean operations the cowl encloses the anvils so that an air blast may be introduced thrugh the air inlet to scour the anvils and clean the interior of the cowl.

Abstract: Improved shredding machine shredding mechanism having elongated wall and gate structure defining a chamber. The chamber walls have margins defining a material entryway at one common end and margins defining a material discharge aperture at the remote end of the chamber from the entryway. An electrically driven rotatable shredder journaled in the wall structure intermediate the entryway and discharge aperture. The gate pivotally mounted externally of the chamber for movement within the chamber at the entryway and extending from a point adjacent to one of the walls divergingly relative to the wall and terminating remote from the pivotal mounting and from the wall defining a progressively constricting chamber as to area of the chamber in latitudinal cross-sectional dimension from entryway to discharge aperture in a selected position of the gate.

Abstract: A machine is capable of cutting into pieces a plurality of diposable containers such as plastic bottles and metal cans. The machine includes a loading section, a cutting section and a collecting section. The cutting section includes a pair of parallel shafts mounted for rotation in opposite directions. Each of the shafts supports a plurality of cutting wheels keyed for rotation therewith. The cutting wheels of one shaft overlap the cutting wheels on the other shaft as each cutting wheel is axially separated from axially adjacent cutting wheels thereon by one of the cutting wheels on the other shaft. A plurality of combers in aligned with each cutting wheel to provide a gap between the cutting teeth and the end of the comber. The disposable containers are cut between the cutting wheels of one shaft and the cutting wheels of the other shaft with the pieces passing through the gap between the end of the comber and the cutting wheel teeth.

Abstract: A cutting apparatus for cutting objects into minute pieces with high exactitude and high precision comprises, as an integral unit, a pair of cutter shafts disposed substantially in parallel to each other, a motor attached to one of the cutter shafts, gears for rotating the other cutter shaft in a direction opposite to the direction in which the one cutter shaft is rotated, a plurality of substantially disk-like cutters fitted around each of the cutter shafts, and a plurality of substantially disklike spacers fitted around each of the cutter shafts. The cutters and spacers around each of the cutter shafts are alternately arranged and brought into intimate contact with each other in the axial direction of each of the cutter shafts. The cutters and the spacers around the one cutter shaft are closely opposed respectively to the spacers and the cutters around the other cutter shaft so as to hold the cutters on the respective shafts in mesh with each other.

Abstract: A paper shredder cutting mechanism includes two parallel-spaced, cooperating rotary knife rollers formed of a core and an axial series of generally equidistantly spaced cutter discs affixed to the core and extending radially therefrom. The cutter discs of the two knife rollers are in an interleaving relationship with one another. Strippers are disposed between adjoining cutter discs of each knife roller and are stationarily supported. Each stripper comprises a flat, planar body having a general shape of a U lying in a plane oriented perpendicularly to the rotary axis of the associated knife roller. The planar body has two leg parts forming legs of the U and a base part forming a base of the U interconnecting the leg parts. The base part defines a cradle portion receiving the core therein. The leg parts have end portions which are remote from the base part and at which the stripper is supported.

Abstract: A machine is capable of cutting into pieces disposable containers such as plastic bottles and metal cans. A first cutting section includes a pair of parallel shafts mounted for rotation in opposite directions. Each of the shafts supports a plurality of cutting wheels keyed for rotation therewith. The cutting wheels of one shaft overlap the cutting wheels on the other shaft as each cutting wheel is axially separated from axially adjacent cutting wheels thereon by one of the cutting wheels on the other shaft. A comber is aligned with each cutting wheel to provide a gap between the cutting teeth and the end of the comber. The disposable containers are cut into first pieces between the cutting wheels of one shaft and the cutting wheels of the other shaft. The first pieces from the first cutting section pass to a second cutting section to be cut into smaller, second pieces.