Abstract: A comminuting apparatus is provided with a housing, at least two intermeshing scissor rolls, a screen, and an access tray. The housing has an entrance opening for receiving waste material and an exit opening for removing subdivided waste material. The scissor rolls are carried within the housing between the entrance opening and the exit opening for subdividing the waste material. The screen is carried by the housing between the scissor rolls and the exit opening. The access tray is provided by the housing and is removably supported downstream of the screen to provide a shear outtake manifold between the screen and the access tray.

Abstract: A used-can processing system includes a shredder for cutting a used drum can, and a pelletizer for pelletizing cut pieces of the used can. The shredder includes a pair of rotary blade units which rotate with their blades meshing each other so as to cut a used drum can thrown from above the shredder, and a pair of auxiliary rotary blade units which face the respective rotary blade units and rotate in the same direction as do the corresponding rotary blade units, to thereby urge the used drum can toward the pair of rotary blade units. Each of the blades of the rotary blade units and the auxiliary rotary blade units has projecting portions and depressed portions formed alternately along the circumferential direction. Moreover, a screen having cut-pieces removal holes is disposed below and along the pair of rotary blade units and the pair of auxiliary rotary blade units.

Abstract: A shredder includes a cutting unit frame and a cutting shaft rotatably supported in the cutting unit frame and carrying a multiplicity of cutting disks, rotatable with the cutting shaft for shredding an item in cooperation with a further tool. The cutting unit frame has two opposing side parts extending parallel to the cutting shaft and two fronting parts extending transversely to the side parts and the cutting shaft. Each fronting part has upper and lower fronting part elements attached to one another and extending between and separately attached to the side parts and internally capturing one of two bearings therebetween such that the bearings rotatably mount the cutting shaft in the cutting unit frame and are removable with the cutting shaft upon removal of only the upper fronting part elements from the cutting unit frame without bringing the cutting unit frame out of adjustment.

Abstract: The present application discloses a multi-functional shredder that is capable of effectively destroying both paper documents and rigid/semi-rigid objects, such as CDs or DVDs. This multifunctional shredder comprises a housing; a drive system including at least one motor; and at least two shafts rotatably mounted within the housing and coupled to the drive system to enable the drive system to counter-drive the shafts in respective opposing rotational cutting directions. Each of the shafts includes positive cutter elements and negative cutter elements, configured to cooperate to shred articles as the shafts are rotationally counter-driven by the drive system in the respective rotational cutting directions thereof. The positive cutting elements on each shaft have positive cutting parts angled in the respective rotational cutting directions of the shafts, and the negative cutting elements on each shaft have negative cutting parts angled opposite the respective rotational cutting directions of the shafts.

Abstract: A paper shredder has two rotary cutters driven by a deceleration device and a casing encased the two rotary cutters and the decelerating device and having a paper track defined between the two paper guides and cashing to allow the stuck paper to be directed directly into the can mounted below the two rotary cutters without damaging any mechanism.

Abstract: The present invention is a linkage mechanism of cut-paper and anti-block of double-duty shredders, main comprising: stripe-cutter wheel group, latitude cutter, drive shaft, paper-expeller, crank coupler link group and intermittent cluster gear, is that crank coupler link drive latitude-cutter to cut horizontally the paper to be cut, then intermittent cluster gear control the stripe-cutter wheel group to pull down the paper to be cut to act longitudinal cut, and by the circle cross movement, the paper to be cut will be cut into chips.

Abstract: The present invention provides a bone grinding apparatus, which comprises a grinding chamber, primary and secondary cutting elements positioned within the grinding chamber to sequentially perform primary and secondary cutting operations on the bone, and a drive mechanism operatively engaging the primary and secondary cutting elements. The apparatus also includes a bone supplying cylinder engaging the grinding chamber and adapted to transport the bone to the cutting elements at a consistent pressure. The apparatus also includes a sealing component designed to operatively engage the drive mechanism and to separate the drive mechanism from the cutting elements.

Abstract: The invention relates to a multi-roller crusher for the comminuting of mineral mill-feed, whereby the crushing rollers are provided with crushing teeth, extending in the circumferential and longitudinal axial directions. Viewed in plan, the crushing teeth are arranged on each crushing roller such that several serial crushing teeth groups are formed behind each other, the imagined connection lines of which run successively at an inclined angle to the plan (1′,2′) of each crushing roller outer edge in the direction of the crushing roller centre.

Abstract: The invention relates to an apparatus and a corresponding method for canceling, in particular destroying, sheet material, in particular bank notes. The apparatus comprises at least one canceling means (2) to which the sheet material (1) to be canceled is fed, in which the fed sheet material (11) is canceled, in particular destroyed, and from which the canceled sheet material (11) is discharged. The apparatus comprises furthermore at least one supervising means (7) for monitoring the sheet material (11) being discharged or having been discharged from said canceling means (2).

Abstract: The invention relates to a file shredder that comprises at least one cutting mechanism, as well as means for driving and controlling the cutting mechanism. The cutting mechanism has at least two cutting rolls, i.e. working rolls, which each are provided with cutting disks or cutting blades that engage one another, and which have strippers associated with them. In the present case, provision is made for two cutting mechanisms, whereby the outlet for the cut material crushed by the top cutting mechanism serves at the same time as the inlet for the cut material entering the bottom cutting mechanism that is arranged underneath the top cutting mechanism.

Abstract: When a printing paper to which an IC chip storing secret information is attached is discarded, a shredder applied voltage to the IC chip by a discharging unit to destroy the IC chip and to make it impossible to read the secret information therefrom. Thereafter, a shredding cutter shreds the printing paper and the shred printing paper is discarded.

Abstract: An apparatus is provided for comminuting solid waste material. The apparatus includes a frame, a set of overlapping scissor rolls, a separator screen and a recycle manifold section. The frame has an enclosure with an entrance for receiving solid waste material. The set of overlapping scissor rolls are rotatably mounted within the enclosure for shearing the waste material into subdivided pieces when the material passes between the scissor rolls. Each scissor roll has a substantially horizontal axis of rotation, with a first scissor roll elevated relative to a second adjacent scissor roll. The separator screen is carried by the frame beneath at least one of the scissor rolls. The separator screen has a plurality of apertures for separating pieces having a size less than a predetermined size which pass through a shear outtake manifold for separation while preventing large subdivided pieces having a size greater than the predetermined size from passing therethrough.

Abstract: A shredding apparatus includes a frame and shafts driven to rotate about shaft axes. A plurality of cutter plates are mounted for rotation with the shafts and are arranged in radial overlapping fashion. The cutter plates may each include cutter tooth groups spaced about an outer plate parameter. A succession of cutting relief surfaces are disposed between successive cutter tooth groups. The cutter tooth groups may be disposed at least partially outward of associated relief surfaces in a radial direction with respect to the drive shaft axis.

Abstract: A blade (2) for a comminution machine of the type having interleaved counter-rotating blades (2) in the case of two shafts (1) or a single set of blades in the case of a single rotating shaft includes a carrier (20) with replaceable teeth (4) and wear plates (3). Each tooth (4) has to tooth tip (121) which projects from it and terminates in a bursting point (121), a forwardly raked receding surface (137) which recedes inwardly from the base of the tooth tip (121) and a receding surface (24) on the wear plates (3A, 3B) which extends inwardly from the base of the tooth (4) to a corner (9) at which it meets a trailing surface (24) on other wear plates (3C, 3D). Shear edges (83) are provided on the teeth (4), on the receding surfaces (24) where they meet the sides (22) of the wear plates (3A, 3D) and on the trailing surfaces where they meets the sides (22) of the wear plates (3C, 3D), and additional bursting points (149) may be provided on the receding surfaces.

Abstract: In the processing of thermal films, following processing, negatives are scanned and the resulting image files are digitally manipulated to render a desired output. Since it is desirable to return thermally processed films to a control location for silver recovery, the negatives are not returned to the consumer. In the method and apparatus of the present invention, after processing and scanning, the film or negative can be rendered unscannable by heating it to a temperature that develops the entire film to its maximum density and destroys the images on the film. As a further option, the film can be physically destroyed by use of for example, a shredder or illuminator downstream of the scanner.

Abstract: The present invention provides a shredder, which has a housing, an entry slot on the housing for inserting a desired medium, a shredding device installed inside the housing for shredding the medium, and a central trigger for sensing the medium and therefore triggering the shredding device. The shredding device has a shredding gap between two shredding knives. The central trigger is installed above the central portion of the shredding gap. The shredder further has a side trigger installed between the central portion and an end of the shredding gap. When a large medium is inserted into the entry slot, the medium will trigger the central trigger device and therefore trigger the shredding device. However, when a sufficiently short medium is inserted into the entry slot, the medium is capable of triggering only the side trigger, and therefore triggers the shredding device.

Abstract: A paper shredder having the function of breaking a compact disc includes juxtaposed first and second rolling blade wheels which are used for shredding paper, and rotated relative to each other. The paper shredder is additionally provided with a third rolling blade wheel that is especially used for breaking a compact disc or a credit card. The surface of the housing of the paper shredder is provided with a paper inlet and a compact disc inlet. The paper may be passed through and shredded by the first rolling blade wheel and the second rolling blade wheel. The compact disc or credit card may be passed through and broken by the second rolling blade wheel and the third rolling blade wheel.

Abstract: A cutter wheel for tire shearing having a unitary annular core with radially inward shoulders on both sides of the radially outward central portion of the core. Pie-piece shaped cutter segments are mounted atop the shoulders of each core with each cutter segment having a base and a blade atop the base, with cutter segments overlapping in a serrated fashion, beyond the central portion of the core. The central portion of the core is smooth, serving as a spacer between adjacent cutter segments. Each blade is split into two side-by-side blade segments, with the laterally outward blade segment experiencing greatest wear. The laterally inward blade segment mounted to a pie-piece shaped cutter segment by radial bolts, while the laterally outward blade segment is fastened to the laterally inward blade segment by axial bolts.

Abstract: An apparatus and a method for installing insulation from bound insulation bales having a feeder for contacting and moving the insulation bales and a receiving apparatus for disengaging the insulation from unbound bales. A cutter disengages insulation from the insulation bales and has at least one vertically arranged member rotatable about a vertical axis toward which the bales are moved and also has a circumference upon which is vertically positioned a plurality of blades extending radially outwardly from said circumference for severing the insulation away from the bales. An air blower blows the insulation out from said system onto a surface to be insulated.

Abstract: A cutting tool of a paper shredding machine includes a pair of cylindrical roller cutters; each roller cutter has a hexagonal shaft rod and a plurality of differential breaking blades inserted on the shaft rod; a gasket spaces between two adjacent differential breaking blades; therefore, two differential breaking blades of two cylindrical roller cutters are assembled in a staggering method, wherein each differential breaking blade has a first set of blades and a second set of blades. The features of the innovative present invention are that no gap exists between the first and the second blades which are either tightly sealed or of a single-blade structure with more thickness thereby preventing the cut paper shreds from falling between the first set of blades and the second set of blades to cause a breakdown of the paper shredding machine.

Abstract: A comminuting apparatus is provided which includes a frame, at least one drive motor, a set of overlapping scissor rolls and a recycle manifold. The frame has an enclosure with an entrance opening for receiving waste material. At least one drive motor is carried by the frame. The set of overlapping scissor rolls includes a first scissor roll and a second scissor roll carried within the enclosure for co-rotation and driven by the at least one drive motor, configured to draw material from beneath for delivery between the overlapping scissor rolls to subdivide the material. The recycle manifold is provided above and downstream of the scissor rolls and is configured to receive the subdivided material from between the overlapping scissor rolls.

Abstract: A comminuting apparatus is provided having a frame, a set of overlapping scissor rolls, a shear outtake manifold, and a pneumatic conveyor. The frame has an enclosure with an entrance for receiving waste material. The set of overlapping scissor rolls is carried for co-rotation within the enclosure. The scissor rolls are operative to comminute the waste material into subdivided pieces. The shear outtake manifold is configured to collect the subdivided pieces of waste material. The pneumatic conveyor includes a source of air flow and a pneumatic duct. The pneumatic duct communicates with an upstream of the shear outtake manifold, and is operative to deliver an airstream from the source of air flow into the shear outtake manifold. The airstream entrains the subdivided pieces and removes the subdivided pieces from the shear outtake manifold.

Abstract: This invention is a dual-path disintegrator having a first path which carries bulk office products to a disintegrator, such as a rotary knife mill, for high security destruction, and a second path which carries sheets of paper through a shredder, either cross cut or strip cut, and then through a disintegrator, such as a rotary knife mill, for final high security destruction.

Abstract: A mechanical system that separates bundles of paper and presents the separated paper on a conveyor in a single layer fashion, for further processing. The paper is accumulated in a hopper and fed into the mechanical separating mechanism in a batch mode. When sufficient volume has been admitted to the container, the inflow port is closed and the mechanical separating impeller are activated to rotate in the same direction, imparting bidirectional forces on compacted bundles of sheets or shreds, causing them to deaggregate. Upon completion of the separation cycle, the separated sheets are expelled through an outlet port and conveyed to a drop chute for further singulation, from which the singulated sheets may be deposited onto one or more conveyor belts for sorting.

Abstract: A roller-type reducing apparatus comprising reducing rollers mounted within a housing for rotation in opposite directions. The reducing rollers comprise a plurality of reducing discs having different diameters and placed in a side-by-side relationship. There are provided reducing discs with fine serrations and reducing discs with coarse serrations, with comminuting discs with fine serrations having a diameter smaller than that of reducing discs with coarse serrations.

Abstract: An improved device for crushing plant material and including contra-rotating rotors comprising a core member with an equal number of not less than three and not more than six blades tangentially disposed thereon.at equal degree angle orientation with each adjacent blade, said blades having flat sides and flat distal end surfaces disposed at substantially 90 degree angles to said sides and interconnected thereto along sharp edges, wherein optimal blade length, optimal positive rake angle, optimal blade thickness, and optimal unsupported blade length are presented.

Abstract: The invention relates to a debarking shaft arrangement for a debarking machine (1). A number of rotatable debarking shafts (3) extending parallel to the advancing direction of the logs (2) are provided with a number of teeth (4) extending beyond the circumferential surface of the shaft (3) and adapted to strip bark off the logs transversely to the lengthwise direction of the logs. The teeth (4) are designed to be effective in both rotating directions of said rotatable debarking shafts (3), and the debarking shafts (3) are designed to be reversibly mounted in the debarking machine. Reversible debarking shafts equipped with bi-directionally effective teeth permit renewal of worn teeth on a debarking shaft by reversing the orientation of the shaft relative to the debarking machine.

Abstract: A method for adjusting the separation between a pair of roller assemblies. A frame is provided. One roller assembly is rotatably supported by a first pair of supports fixed with respect to the frame. On the other hand, another roller assembly is rotatably supported by a second pair of supports that are movable with respect to the frame. A pair of shims is provided. One shim is positioned between a first one of the second pair of supports and a first member that is fixed with respect to the frame. The other shim is positioned between a second one of the second pair of supports and a second member that is fixed with respect to the frame.

Abstract: The present invention provides a rock crusher tooth design which when exposed to material flows during operation of the rock/material crusher will increase the wear life of the tooth by resisting wear caused by a material flow across, onto, and around the tooth. It is a general object of the present invention to provide a rock crusher with a plurality of teeth formed integrally therein. The tooth has a design that significantly improves the wear resistance of each tooth. The tooth structure includes a plurality of hard material compact inserts integrated within the tooth structure. The compact inserts are integrally formed with the teeth into unitary structures. In an embodiment of the invention, hard abrasive material, such as tungsten-carbide compact inserts, are appropriately positioned in a steel cast tooth mold, the steel flows into spaces between and around the tungsten-carbide inserts trapping them in a steel matrix. The casting method results in an integral unitary steel tooth.

Abstract: The invention relates to an attachment for paper shredders for receiving and feeding printed matter, in particular, crumpled paper, as is found in wastepaper baskets and the like, as well as a method for filling a paper shredder by using the aforementioned attachment, wherein the paper shredder comprises a housing of a cabinet-like base and an optionally removable upper housing part, together with a cutting assembly arranged in the upper area of the housing, comprising cutting rollers and stripper bars as well as a correlated drive device, wherein above the cutting assembly a feed shaft for so-called crumpled paper is provided and the attachment is arranged above this feed shaft fixedly or optionally removably, wherein the attachment together with a covered, perforated upper area of the upper housing part forms a receiving chamber for so-called crumpled paper, and wherein this receiving chamber is in communication with the feed shaft, and it is especially provided that the attachment (11) has an integrated cl

Abstract: The invention relates to a waste grinder such as a vehicle tyre bi-rotor grinder, some of its component parts (rotor, shearing wheel) as well as to a method for maintenance of the said grinder. The grinder comprises at least one rotor which has at least one shearing wheel comprising: a ring-support (6), which is designed to be rotated by a shaft (3) and defines a plurality of peripheral sections, a plurality of shearing blades (8,9) which are disposed corresponding to the sections such as to project radially relative to the peripheral surface of the ring-support (6), the said wheel being characterised in that it comprises a plurality of blade-holder parts (7), onto which the blades (8,9) are secured by detachable means for securing (11,13) which are accessible from the outer lateral shearing surfaces of the blades, the blade-holder parts (7) being designed to be applied and to be secured by detachable means for securing (17) onto the sections of the peripheral surface of the ring-support (6).

Abstract: A rubber waste disposal apparatus processing rubber waste such as an old tire efficiently includes a casing, a rubber waste deformation unit provided in the casing to subject rubber waste to deformation, and an ozone-containing gas supply unit supplying ozone-containing gas into the casing. The rubber waste deformation unit includes a pair of cylindrical rollers having a plurality of protrusions projecting outwards, capable of sandwiching rubber waste at the gap therebetween, and a distance setting unit that can set the distance of the gap between the cylindrical rollers.

Abstract: A shredder for shredding metal shavings, chips and the like includes a housing (10) containing a shredder assembly having first and second roller motor-operated shafts (40,42) carrying spaced knives (50) for shredding metal. A sensor (66,68) on at least one shaft (40,42) senses a change in rotation of the shaft, indicative of a jammed condition. A microprocessor (70) responds to the sensor to open an ejection door (20) normally closing an ejection outlet (16) and to reverse rotation of the shaft (42) to dislodge the jamming object. When the jamming object is dislodged, the microprocessor halts rotation of one shaft (40) to permit the knives on the reverse rotating shaft (42) to carry the jamming object toward the open ejection outlet (16). After the object has been ejected, the microprocessor (70) returns the shafts (40,42) to their normal operation to continue shredding metal.

Abstract: A sewage cleaning and comminuting system is provided with a pair of dissimilar sized cutter stacks that extends across an influent channel which intercepts all solids too large to pass there through. The dissimilar sized cutter stacks are capable of grinding large and round shaped objects. The cutter stacks rotate at dissimilar speeds and require less energy to grind solids than other grinders having similar sized grinders rotating at the same speed. The system includes an integrated cleaning assembly whereby debris accumulated between the cutter disks is removed as the cutter disks rotate. Embodiments are provided including grinders that employ three and four shafts. Another embodiment is directed to an improved cutter disk. Yet another embodiment includes an auger screen assembly used in conjunction with the comminuting system to remove solids from the effluent stream.

Abstract: This invention is related to a dual-functional medium shredding machine structure, specifically designed for shredding or destroying paper printed with data to be destroyed, optical discs containing data to be destroyed, or expired credit cards.

Abstract: A novel apparatus can be used to simulate the chewing process, wherein the wherein the apparatus comprises a thermostattable kneading space comprising an upper portion and lower portion, wherein the lower portion comprises at least two kneading paddles for comminuting and kneading the test material and the upper portion comprising an air space for connecting the volatile components released during the comminution and kneading, wherein said apparatus comprises an inlet in which saliva is introduced into the kneading space and a second inlet in which air is passed into the kneading space, wherein air is passed together with the volatile components of the comminution and kneading process through an outlet of the kneading space to a detector system.

Abstract: A shredder for shredding material is provided that includes a housing. having a cutting device to shred material. A receptacle is also included and is positioned to receive the shredded material. A detecting device is positioned between the cutting device and the receptacle and emits and detects a beam so that when shredded material occupies a first position within the receptacle the beam is interrupted. Advantageously, the detecting device may be used as a bin full detection device to provide indication that a bin is filled or substantially filled with shredded material.

Abstract: A shredding apparatus comprises a plurality of rotatable rolls, each one of the rolls being rotatable around an axis of rotation in a first direction of rotation or a second direction of rotation. Each roll further has a plurality of angled replaceable teeth, which are arranged in at least one first set of teeth arranged in a first helical line across an outer surface of each roll, circumferentially spaced apart a first angle and facing the first direction of rotation. Further, at least one second set of teeth is arranged in a second helical line across the outer face of each roll, circumferentially spaced apart the first angle and facing the second direction of rotation. The first helical line and the second helical line of teeth are arranged to axially (in the longitudinal direction of the rolls) move material to be shredded when the rolls are rotated.

Abstract: A document shredder can be equipped with a shredding system for very high security. The shredding system can be made up of a first cutting stage with two corresponding cutting cylinders. After the first cutting stage a second cutting stage is provided for material cut in the first cutting stage. The second cutting stage can be made up of another pair of cutting cylinders. Alternatively, the second cutting stage can be made up of a third cutting cylinder reaching into one of the cutting cylinders of the first cutting stage, thereby establishing the second cutting stage.

Abstract: The present invention provides a shredder, which has a housing, an entry slot on the housing for inserting a desired medium, a shredding device installed inside the housing for shredding the medium, and a central trigger for sensing the medium and therefore triggering the shredding device. The shredding device has a shredding gap between two shredding knives. The central trigger is installed above the central portion of the shredding gap. The shredder further has a side trigger installed between the central portion and an end of the shredding gap. When a large medium is inserted into the entry slot, the medium will trigger the central trigger device and therefore trigger the shredding device. However, when a sufficiently short medium is inserted into the entry slot, the medium is capable of triggering only the side trigger, and therefore triggers the shredding device.

Abstract: A machine for separating a compacted fibrous material and pneumatically impelling separated fibrous material generally comprising a hopper having a trough at a lower end thereof provided with an outlet, a pair of augers disposed in the trough operable to advance separated fibrous material toward and into the hopper outlet, means disposed in the hopper between an inlet of the hopper and the trough for shredding compacted fibrous materials introduced into the hopper, an airlock feeder having an inlet communicating with the trough outlet, a motor and means for conveying drive from the motor to the shredding means, the augers and the feeder.

Abstract: A paper shredder has two rotary cutters each having multiple blades spaced apart from each other. Each blade has a first cutting blade with multiple cutting edges and a second cutting blade with multiple cutting edges alternate with respect to the cutting edges of the first cutting blade so that when shredding the paper, only one cutting edge engages the paper.

Abstract: A shredding machine includes a plurality of locating plates respectively mounted on two revolving axles between two side frames, pairs of spring washers respectively mounted on the revolving axles between each two locating plates to hold a respective annular cutter for cutting inserted paper into shreds upon the operation of a motor to rotate the revolving axles through a transmission gear train, two support rods connected in parallel between the side frames at two sides, and two locating frames connected between the side frames and respectively supported on the support rods, the locating frames each having a protruded middle portion engaged into a retaining notch of each of the locating plates to stop the locating plates from rotation with the revolving axles and to further stop the annular cutters from deformation during cutting.

Abstract: An automatic start mechanism for a shredding apparatus is disclosed. The shredding apparatus includes a shredding mechanism for cutting the paper when the paper passes through a channel, a power source for outputting a motive power for the shredding mechanism, a trigger disposed at an entrance of the channel for arising a move when the paper passing through the channel to be against thereto, a delay unit for producing an against force driven by the power source, a lever connected between the trigger and the delay unit for moving in response to the trigger and the delay unit against, and a switch electrically connected to the power source and contacted to a first portion of the lever. The distance between the first portion of the lever and the trigger is smaller than a distance between the delay unit and the trigger.

Abstract: A paper shredder having the function of breaking a compact disc includes juxtaposed first and second rolling blade wheels which are used for shredding paper, and rotated relative to each other. The paper shredder is additionally provided with a third rolling blade wheel that is especially used for breaking a compact disc or a credit card. The surface of the housing of the paper shredder is provided with a paper inlet and a compact disc inlet. The paper may be passed through and shredded by the first rolling blade wheel and the second rolling blade wheel. The compact disc or credit card may be passed through and broken by the second rolling blade wheel and the third rolling blade wheel.

Abstract: An apparatus for treating and condensing wet garbage and/or food garbage includes a housing having a garbage inlet and a garbage outlet associated therewith and defining a treatment path along which wet garbage passes for treatment, a pair of primary comminuting gears disposed along the treatment path downstream of the garbage inlet for providing a primary comminuting action on the wet garbage, and a pair of secondary comminuting gears disposed along the treatment path downstream of the primary comminuting gear for providing a secondary comminuting action on the wet garbage. The primary or secondary comminuting gears are preferably helical gears with intermeshing teeth, and may include transverse grooves extending at least partially through their teeth to facilitate passage of the garbage material between the gears.

Abstract: A paper-guiding structure of a shredding apparatus is disclosed. The apparatus includes a first shaft, a second shaft disposed with the first shaft in parallel, wherein a channel is formed between the first shaft and the second shaft for a paper to pass therethrough. A plurality of cutters are staggeredly sleeved and fixed on the first and second shafts respectively and transmitted by the first and second shaft to rotate for cutting paper passing through the channel. A plurality of guiding plates are disposed in the space between every two adjacent cutters for each shaft, and movably sleeved on the first or second shaft. Each of the guiding plates is integrally formed and has a continuous surface facing the channel to eliminate slits through which shredded paper sneaks out of the guiding path.

Abstract: A comminuting apparatus is provided which includes a frame, at least one drive motor, a set of overlapping scissor rolls and a recycle manifold. The frame has an enclosure with an entrance opening for receiving waste material. At least one drive motor is carried by the frame. The set of overlapping scissor rolls includes a first scissor roll and a second scissor roll carried within the enclosure for co-rotation and driven by the at least one drive motor, configured to draw material from beneath for delivery between the overlapping scissor rolls to subdivide the material. The recycle manifold is provided above and downstream of the scissor rolls and is configured to receive the subdivided material from between the overlapping scissor rolls.

Abstract: A shredding machine includes cutter holders and washers mounted in a base frame to hold two sets of circular cutters on two parallel shafts, a motor adapted to rotate the shafts through a transmission gear set, and baffle means installed in the base frame to support the cutter holders and to protect the circular cutters from deformation,_the cutter holders each having an invertedly disposed T-shaped holder body, at least one through hole for the passing of the revolving shafts, and pulleys disposed at different elevations and supported on the revolving shafts at top and bottom sides.

Abstract: A shredding apparatus includes a frame and shafts driven to rotate about shaft axes. A plurality of cutter plates are mounted for rotation with the shafts and are arranged in radial overlapping fashion. The cutter plates may each include cutter tooth groups spaced about an outer plate parameter. A succession of cutting relief surfaces are disposed between successive cutter tooth groups. The cutter tooth groups may be disposed at least partially outward of associated relief surfaces in a radial direction with respect to the drive shaft axis.