Abstract: A method of fixing an adjusting bolt of a veneer peeling knife which is usually performed after adjusting the knife in a knife setting gauge to position its cutting edge at a desired height. The adjusting bolt is fixed by forcing the adjusting bolt by a fixing member in such a direction that the advancing side flank of the external thread of the adjusting bolt is kept in pressed contact with the lower side flank of the internal thread of a threaded hole formed in the knife bottom and receiving therein the adjusting bolt by thread engagement. The fixing member may be provided by a rigid member disposed below the knife bottom surface and formed with a threaded hole through which the adjusting bolt is inserted by thread engagement so that forcing the fixing member upward by a pressing member such as a bolt in a direction that effects the pressed contact between the above two flanks fixes the adjusting bolt securely to place. The fixing member is provided by any suitable resilient material such as silicon rubber.

Abstract: A stripper for use on a cutting cylinder having a shaft. The stripper comprising a unitary, resilient body and an arcuate recess in the mid-portion of the body adapted to surround at least about 180 degrees of the circumference of the shaft of the cylinder.

Abstract: A multiplicity of teeth are mounted to a beam in a comb structure, with the space between the teeth defining slots. The edges of the slots are lined with upstanding flanges which are sharpened to form cutting edges. The comb structure is arranged to be substantially parallel to an array of bag breaking bars. The bars interdigitate with the teeth and thus pass through the narrow openings between the teeth where the knife edges scrape the bars, thereby cutting free any material adhering to or impaled upon the bag breaking bars. Alternatively, an apparatus for cleaning a bag breaker has a pivotally mounted are having a fork which is aligned to receive a bar between the tines of the fork. The fork engages the base of the bar and then proceeds to slide up the bar as the forward motion of the bar causes the arm to pivot. In this way, material impaled upon a bar is slid or scraped upwardly towards the top of the bar.

Abstract: A garlic grater having a grating drum with a cylindrical grate driven into rotation by a motor which is preferably operated with batteries. The grating drum is freely mounted within an inner liner in such a manner as to define an annular, garlic skin-receiving chamber between the grate and the inner surface of the inner liner. A lateral opening is provided in the inner liner, through which a clove of garlic can be inserted and press against the grate. The grater also has a base for collecting the garlic juice and gathering up the garlic gratings falling from the grating drum when a clove of garlic is pressed against the drum while the same is rotating. This base has a cup-shaped member detachably mounted under the drum, a central support projecting upwardly from the cup-shaped member so as to extend axially within the cylindrical grate, and a wiper radially projecting from the central support so as to contact and wipe the cylindrical grate surface internally while the grating drum is rotating.

Abstract: Apparatus for processing recyclable asphalt material includes an elongate drum having a generally cylindrical wall, a central axis, a first end and a second end, and being mounted for rotation about the central axis, with the central axis tilted at an acute angle so as to elevate one of the first and second ends relative to the other of the first and second ends, a heating chamber adjacent the first end of the drum, a plurality of breaker members arrayed generally parallel to the central axis of the drum and placed within the drum, a heat conduit extending along the drum coaxial with the breaker members, a heating arrangement for supplying heat to the heating chamber, ducting interconnecting the heating chamber, the breaker members, and the heat conduit serially such that heat from the heating chamber is conducted from adjacent the first end of the drum to adjacent the second end of the drum and is returned to adjacent the first end of the drum serially through the breaker members and the heat conduit, a feed

Abstract: Rows of finger blocks are mounted to a frame body of a rotary industrial shredder laterally parallel to respective ones of the counter-rotational pair of shafts so as to be moveable slightly, but meaningfully, during the shredding operation while maintaining tight clearance relationships between the fingers and cutters. In such a manner, waste material, particularly waste fibrous material such as waste carpet, may be stripped satisfactorily from the cutter and spacer discs carried by the shafts. Preferably, the finger blocks include unitary cutter and spacer fingers extending inwardly towards the shafts in respective opposed relationship to cutter and spacer discs carried thereby.

Abstract: In a document shredder (1) each tool roller (7, 11) has two tool strippers (8, 9 or 12, 13) with in each case at least one support rod (15) and associated stripping bodies (28), so that two rows of stripping bodies (28) are provided in spaced manner in the circumferential direction of the tool roller (7, 11). In the vicinity of at least one longitudinal area of the tool roller (7, 11) particularly prone to bending deformation in place of the stripping body (28) is provided a support body (30), which positively connects the support rods (15) of two tool strippers (8, 9 or 12, 13) and the tool rollers (7, 11) and which can also act as a stripper. As a result of the frame-like locking of the tool roller and the support rods a significant stiffening occurs, which makes it possible to give smaller dimensions to the tool roller (7, 11) and/or the support rods (15).

Abstract: The comminution of solid materials, such as stumps and wood waste, into particulate form is accomplished by introducing the material to be comminuted into a tub. The tub is rotated to induce a circular motion to the material. Simultaneously, a disk positioned at the bottom of the tub is rotated, preferably in the opposite direction to the tub, in a plane parallel to the tub bottom. The disk has teeth thereon that impact the material in the tub. A screening means at the bottom of the tub is sized to keep the material in the tub until it reaches a desired particle size, at which time the particles can leave the tub through the screening means and enter a collection chamber. The particles are removed from the collection chamber by being entrained in an airstream that passes adjacent an opening in the collection chamber. Preferably, the teeth in the disk are individually replaceable and are symmetric so that once one side is worn the tooth can be reversed in its mount and used again.

Abstract: An improved apparatus and method for separating milled sugarcane pith from flattened rind upon discharge from a depithing station. The method includes dividing the discharge by a fixed deflector, preferably with a blunt upstream edge, into a primary pith flow and a rind flow which includes a secondary pith flow, and thereafter removing pith from the rind flow and diverting it to join pith from the primary pith flow. Preferred embodiments capture the pith in interstices of a rotating brush which merges with the secondary pith flow, turning such pith away from the rind flow, and then releasing it.

Abstract: A workplace document shredder is located with its cutting mechanism, gear and electric motor in a self-supporting, integral casing, which carries all the functional parts and circumferentially surrounds the same. The bearings of the cutting rollers are contained in bearing inserts, which are inserted from above in corresponding recesses of the casing. A container made from easily manufactureable material, such as corrugated paper, carries the apparatus and a hood is placed over it.

Abstract: A machine for removing yard waste from bags and for sorting the waste. Filled bags dropped into a hopper have offset slashes cut in opposite sides by blades mounted upon two rotary shafts. The blades are pivoted to minimize solid tramp waste damage, and are mounted in opposing paris for balance. Guards, extending inward from opposed parallel hopper sides enclose each shaft and direct the bags between them. Slots through the guards in the blade paths permit the blades to pass through. Flexible wipers between backing plates extend inward from both sides of the slots parallel to the blade paths to bear against the blades. The cut bags fall onto a conveyor which carries them to the top of an inclined vibrating screen. The screen is sized to pass yard waste but not bags, bag parts or tramp material. Conveyors under the screen carry the yard waste away for disposal.

Abstract: A mixing machine including a frame; a first roller rotatably supported by the frame; a second roller rotatably supported by the frame in a position parallel to the first roller and closely adjacent thereto so as to facilitate compression of material therebetween; a rotary drive mounted for reciprocating movement on the frame in a direction substantially parallel to the first roller; and a reciprocating drive for producing the reciprocating movement of the rotary drive. Also included is a mixing roller operatively coupled to the rotary drive so as to be rotated thereby, the curling roller including an outer end disposed for movement with the rotary drive means along a path closely adjacent to the first roller and extending between outer and inner surface portions thereof so as to move material on said first roller from the outer portion thereof toward the inner portion thereof.

Abstract: Apparatus for processing asphalt material to be recycled by introducing used asphalt material from the field in relatively large pieces, as received from the field, into one end of a cage-like array of tubular breaker members while simultaneously heating the tubular breaker members from the other end of the cage-like array and rotating the cage-like array about a tilted central axis of rotation to tumble the material within the cage-like array and reduce the size of the pieces of material to a desired aggregate size within a mass of material moving toward the other end of the cage-like array, the tubular breaker members being spaced apart circumferentially such that only the desired aggregate-sized pieces in the mass of material pass radially out of the cage-like array for delivery and reuse, collecting and oxidizing pollutants emanating from the asphalt material being processed and, in an alternate embodiment, generating electrical power for use at the site of the apparatus.

Abstract: An improved machine for cutting material into at least narrow strips includes parallel, rotating cutting shafts having a plurality of cutting wheels thereon. The cutting wheels are separated by spacer-comber elements which provide a comber surface in alignment with a cutting wheel on the other shaft. A cutting wheel comber is mounted between adjacent spacer-comber elements and includes a concave surface to partially encircle the cutting wheel therebetween. The cutting wheel comber has a discharge end toward the discharge side of the machine with a rounded portion. The regions along the concave surface is separated by different distances from the cutting wheel to prevent the retention and collections of the narrow strips of material at the backsides of the cutting wheels.

Abstract: A paper shredder includes a cutting unit with cutting rollers and a feed table arranged in front of the cutting unit. A conveyor belt for waste material or paper to be comminuted is mounted in the feed table. The conveyor belt extends into an intake gap of the cutting roller. The front end of the conveyor belt formed by a guide roller is mounted spaced from stripping members of the cutting rollers and this distance is bridged by a guide unit for the waste material or paper.

Abstract: A rotor shearing type crusher for crushing municipal waste and industrial waste whether it is bulky or not. If any foreign material, which is impossible to crush, is mixed with the municipal waste or industrial waste, the foreign material is promptly discriminated and discharged separately. The crusher includes a casing, a feed plate and a cutter respectively rotatably mounted to the casing obliquely above two rotatable knives. The inclination of the feed plate and cutter can be changed freely. Cutouts rae provided on the top end of the feed plate and cutter in a comb-like manner to dodge cutting edges of the rotatable knives intersecting each other. A discharge port is divided into two sections. The crusher of such a construction performs a function of tearing off soft waste twining itself around the rotatable knives. Rigid material impossible to be crushed is separately discharged. Even dangerous small waste such as cartridges, cylinders, etc. can be crushed and degassed inside without fail.

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: Apparatus and method for processing asphalt material to be recycled by introducing used asphalt material from the field in relatively large pieces, as received from the field, into one end of a cage-like array of tubular breaker members while simultaneously heating the tubular breaker members from the other end of the cage-like array and rotating the cage-like array about a tilted central axis of rotation to tumble the material within the cage-like array and reduce the size of the pieces of material to a desired aggregate size within a mass of material moving toward the other end of the cage-like array, the tubular breaker members being spaced apart circumferentially such that only the desired aggregate-sized pieces in the mass of material pass radially out of the cage-like array for delivery and reuse.

Abstract: An improved machine for cutting into small pieces the thin wall material of disposable containers includes parallel, rotating cutting shafts having a plurality of cutting wheels thereon. The cutting wheels are separated by annular spacers which provide a rotating comber surface. There is a spacer comber partially encircling each of the annular spacers which has a lower section having a rounded surface. A cutting wheel comber partially encircles each of the cutting wheels and has a lower end with a rounded portion. The spacer combers having the rounded surface and the cutting wheel combers having the rounded portion prevent the collection of the small pieces within the improved machine.

Abstract: A shredding device uses a plurality of interleaving, counter-rotating discs to reduce sheets of material into longitudinal strips. One or more parallelogram or diverging configured 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.

Abstract: A shredding machine for shredding vehicle tires and various other materials includes a pair of rotatable shafts and a cutting block mounted within a frame. The cutting block includes a top surface and a plurality of slots extending downwardly from the top surface and located on each side of the cutting block. The top surface of the block and each of the slots define respective U-shaped cutting edges. The shafts are rotatably mounted on the frame on opposite sides of the cutting block. Each shaft includes a plurality of cutting teeth which are spirally arranged along the length of each shaft. Each shaft may include one or more spirals of cutting teeth. The shafts are rotated in opposite directions relative to one another with one or more of the cutting teeth on each shaft being rotated through a respective slot in cutting engagement with the U-shaped cutting edge of the slot.

Abstract: A rotary shear type shredder for shredding a wide range of materials, including flat and sheet materials has a plurality of spaced, intermeshed coacting cutter discs mounted for counterrotation on a parallel shaft. Each disc has a single cutter hook and a single rectangular cutter block fixedly mounted on opposite circumferential sides thereof. The hooks and blocks are arranged to form a spiral of cutters and hooks mounted on each shaft a 180 degrees apart and positioned so that blocks on one shaft feed material to hooks on the other shaft. The cutter blocks have a pair of right-angle cutter edges on both front and back sides for coacting with discs and hooks when rotated in a forward direction and coacting with cleaning fingers when reversed.

Abstract: An apparatus for milling particulate mineral material comprises two cylinders rotatable in opposite directions about parallel axes defining a plane while being yieldingly pressed towards each other, the cylinders defining therebetween a milling compression space having an inlet for the particulate material above the plane and an outlet for the milled material below the plane. To reduce the formation of agglomerates and prevent circumferential and/or lateral flushing of the material, the outlet space is closed by respective lateral flanges at the opposite cylinder end faces and a barrier including a scraping bar extending across the outlet space below the plane into contact with the flanges and having one edge in contact with the peripheral surface of one of the cylinders while an opposite edge defines a milled material output of reduced cross sectional area with the peripheral surface of the other cylinder.

Abstract: Comminuting apparatus for waste and scrap materials such as rubber and worn tires has intermeshed spaced cutters mounted on oppositely rotating shafts. Multi part circular material clearing rings surround the shafts in the spaces between the cutters. The parts of the rings are held together by fasteners that can be removed in the field with simple tools. This eliminates the need for dissassembly of the apparatus and removal of the cutters in order to replace worn or defective clearing rings. Methods of assembling and disassembling the clearing rings are disclosed.

Abstract: A shredder for shredding or comminuting trash, waste material and the like in a waste recycling system which includes a hopper having a pair of spaced rotatable shafts with shredding elements thereon forming the bottom portion of the hopper with the shafts being independently driven at a relatively slow speed with the shredding elements being generally circular and having overlapping peripheral portions with staggered teeth thereon and rotating in opposite directions to provide an effective shearing, shredding and comminuting action. The shafts are square with the shredding elements having a correspondingly square central aperture so that they can slip onto the shaft in one of four positions with spacers provided between the shredding elements to maintain them properly spaced thereby eliminating the necessity of using keys or other fastening arrangements. The teeth on each shredding element has an inclined radial face with the teeth being located at circumferentially different positions.

Abstract: A paper shredder for accommodating paper of varying stacks of thickness bound together with staples and the like. A pair of low speed feed rollers are disposed within the device for engaging the paper and for moving the paper into a contoured throat which guides the paper into a primary brush assembly having a set of wire bristles that are rotating at a very high rate of speed. As the paper makes contact with the wire bristles, the paper is pulled along the throat, and simultaneously shredded as it is pulled into the shredding chamber. A stationary wire brush assembly is mounted within the shredding chamber includes a set of long wire bristles that permits the bristles of the two brush assemblies to mesh so that as the bristles of the primary brush assembly are rotated they mesh with the bristles of the stationary brush assembly thereby discharging the shredded paper bits, staples, paper clips and other objects that become lodged in the primary brush bristles the shredding chamber.

Abstract: The cutting tool (3) formed by two cutter blocks (7) of a shredding machine has a stripping means with two stripping grids (10) located between the cutter blocks (7) and two stripping plates (11) located outside the cutting zone and which in each case engage in the gaps (9) between the cutting disks (8) of the cutter blocks (7). The stripping plate (11) associated with each cutter block (7) by one-piece construction is constructionally combined with the associated stripping grid (10), so that there is a very precise alignment of the stripping plate (11) with respect to the stripping grid (10) and all the stripping plates (11) and all the stripping grids (10) can be secured with common supporting plates (30).

Abstract: In a stripping means for shredding machines or the like with spaced interleaved cutting disks (5), primary strippers (8, 9 or 10, 11) closest to the cutting zone engage in a circumferential zone of the associated cutting roller (4), but only in every other annular slot (6). The intermediate annular slot (6) is occupied by strippers (9, 8 or 11, 10) at another circumferential zone of cutting roller (4). An advancing load of comminuted material does not simultaneously strike all the primary strippers over the entire roller length for stripping. Instead, the load strikes the strippers in time succession. The primary strippers form guide elements through which adjacent material flows (28, 29) of the comminuted material are spaced and then can optionally be brought together again for mixing purposes. As a result it is much more difficult to re-associate parts of the material flows or the particles forming the flows in attempting to recover the position of the comminuted parts in the non-comminuted original.

Abstract: In a cutting mechanism for a document shredder a pair of cutting rollers are disposed in side-by-side relation with disk-shaped circular cutters spaced apart on the rollers. Adjacent circular cutters form annular grooves between them so that the circular cutters on one roller extend into the annular grooves on the other. Wiper plates are located in the annular grooves between the cutters and are arranged in a row extending in the axial direction of the rollers. The wiper plates have tips arranged in a pointed manner with the tips located at the outer circumferential surface of the roller cores. Further, strip-shaped support rods maintain the wiper plates adjacent to the cutting rollers and resting in a positively locked manner on the outer circumferential surfaces of the circular cutters. Each support rod has a pointed tip which engages into an undercut groove in a radially outer surface of each wiper plate.

Abstract: The crusher of the present invention is for crushing metal blocks obtained by compressing abandoned cars and metal scraps, where the inside of the casing having a discharge opening is equipped with pressing rolls in the upper part, a crushing roll arranged in the middle below the pressing rolls and a pressing body arranged close to the crushing roll, where the pressing rolls and the crushing roll are provided with blades protruding from the circumference, while the pressing body is provided with pressing blades on its circumference near the crushing roll and is arranged so that it can freely come closer to or away from the crushing roll.

Abstract: The invention relates to a method and to apparatus for the crushing of material to be comminuted by means of a material bed roll mill, in which such material is forcibly delivered in a regulable mass flow to the roll gap. In this way even materials which tend to slip on the rolls can be crushed satisfactorily. It is also possible to keep the nature of the product constant over a wide range of variations in the throughput.

Abstract: A screenless mill which grinds and simultaneously conveys material utilizes a grinding system constituted by a rotating shaft on which grinding elements are fixed in a helical arrangement. The helical arrangement forms a screw which facilitates the advancement of the material in addition to grinding it. The screw pitch is adjustable in such a manner that when the material reaches the discharge port it has attained the required particle size. The grinding elements are readily interchangeable to permit replacement of worn or damaged parts or to treat a variety of materials as well as to vary the degree of grinding to be attained.

Abstract: A document shredder comprising the combination of a pair of counter-rotating rolls forming integral cutting discs interleaved with each other for cutting documents fed between the rolls into multiple strips, the discs also having cutting edges extending longitudinally of the rolls for cutting the multiple strips into short segments; multiple spacers mounted along the length of each roll, each of said spacers extending into the space between a pair of adjacent cutting discs on the same roll, and multiple diverters spaced along the length of each roll in register with the discs on the respective rolls, each of the diverters having an arcuate surface in closely spaced relationship to the radially outer surfaces of one of the discs for preventing the accumulation of the short segments of the cut documents adjacent the rolls.

Abstract: Two rolls which carry roll teeth rotate, as seen from their top side, in directions away from their common roll nip or gap towards adjacent hopper wall sections which carry hopper teeth. The refuse is thus loosened instead of being compacted in the common roll nip or gap, as in the prior art. The loosened material is more readily cut than the material which hitherto was compacted in the common roll gap. At a predetermined limiting load between the roll teeth and the hopper teeth, at least the hopper wall section which carries the affected hopper teeth, is retracted from the associated roll by a drive and from its operative position depicted on the right in FIG. 2 into an inoperative position depicted on the left in FIG. 2. The interfering material can fall through downwardly, whereupon the hopper wall section returns towards the associated roll into its operative position. No hopper blockage can occur.

Abstract: An apparatus for comminuting waste material such as waste plastic sheet material, into progressively smaller pieces until a desired size is reached that may be recycled. The apparatus has a set of slowly rotating, intermeshing scissor rolls for receiving the waste material and shearing the material into smaller pieces. A paddle wheel conveyor receives the smaller pieces from the scissor rolls and moves the smaller pieces over a screen with the undersized smaller pieces passing through the screen defining the desired reduced size. The oversized smaller pieces that do not pass through the screen are reprocessed back to the scissor rolls by the paddle wheel conveyor. A vacuum pump draws air through the apparatus and the screen to facilitate the separation on the screen and entrains the undersized pieces in an air stream to convey the pieces from the apparatus.

Abstract: An apparatus for collecting the flesh of fish comprising an endless belt for conveying a material and two rotatable hollow rolls for collecting the flesh of fish each having a multiplicity of flesh collecting holes in its peripheral wall and being closed at its one end and open at the other end thereof, the two collecting rolls being spaced apart by a distance in the direction of movement of the endless belt and held in pressing contact with the surface of the belt by separate contact pressure adjusting means individually, a scraping knife being disposed at the rear side of each collecting roll and adapted for sliding contact with the peripheral surface of the collecting roll.

Abstract: The present disclosure is directed for use with a tire carcass shredding apparatus having a base frame in which are journalled at least one pair of opposed parallel shafts on which are carried slotted mandrels and cutter blades having spacers between each adjacent mandrel and cutter blade all being spline mounted for rotation with the shafts. The cutter blades are carried by one shaft entering the slots of the mandrels of the opposed shaft. The anti-foul device of this invention has a support bar for each of the opposed parallel shafts. Clean-out fingers and anti-foul fingers are positionable along the support bars for cleaning the zone of interdigitation between the mandrels and cutter blades.

Abstract: Material feeding and clearing apparatus for use in a material comminuting apparatus includes a plurality of elongate guide-clearer finger members which extend through the spaces between spaced apart cutting discs or similar elements of each of a pair of intermeshed cutter rolls, from an infeed side of the apparatus to an outlet side to the pair of rolls. The finger members are preferably resilient and extend through a space defined between the shaft or central spacer between spaced apart cutter discs or similar rotating elements of one of the pair of rolls and the peripheral surface or edge of a rotating cutting element of the intermeshed rotatable cutting roll. Similar guide-clearer fingers are associated with each rotatable roll and extend upwardly above the infeed side of the pair of rolls, defining an infeed chute on the infeed side.

Abstract: In a forage harvester having a cutterhead and an auger to move crop material away from the cutterhead, baffle means are provided to prevent material from being thrown from the auger toward the cutterhead. The baffle means is located above the auger and behind the cutterhead in order to deflect material downwardly toward the auger.

Abstract: A processing apparatus for cutting solid refuse and for breaking open any bags in which the solid refuse is contained comprises a housing which has an inlet opening and an outlet opening; a rotary shaft mounted in the housing, the rotary shaft mounting a plurality of blade elements which include head portions with cutting edges that extend radially away from the rotary shaft, the head portions of the blade members forming spaces therebetween and being sequentially angularly oriented about the shaft; and a plurality of parallel slat blades stationarily mounted in the housing, each slat blade being aligned with a space between the head portions of the blade elements and shaped so that material fed into the inlet opening of the housing will be compacted and/or crushed and cut by the coaction of the blade element head portions and the slat blades, and then discharged from the housing outlet opening.

Abstract: An apparatus for shredding paper by passing the paper or document between a pair of shredding rollers comprising a plurality of spaced cutters characterized by a backup arrangement for at least one of the rollers to prevent bending of the roller and jamming during a shredding operation. The backup arrangement includes at least one yoke member having at least one finger which extends between cutters to engage a spacing portion of the roller to limit the amount of bending thereof so that a document or sheet of paper cannot pass between the rollers without being shredded.

Abstract: Presented is a method and means for use in cleaning the inside surfaces of a waste disposal unit. The device does not interfere with the grinding action of the disposal unit, nor is the device forming the subject matter of this invention subjected to the grinding action of the disposal unit while in use. Additionally, the device may include appropriately scented oils effective to make the inside of the disposal unit pleasantly aromatic.

Abstract: Portable apparatus for shredding waste materials, particularly reinforced resilient materials such as used pneumatic tire casings, in which generally cylindrical cutter rolls, each comprising a plurality of cutter discs, are intermeshed with one another to shear scrap material into smaller pieces, and feeder-stripper rolls, each comprising a plurality of feeder-stripper discs, are intermeshed with the cutter rolls but spaced apart from one another. The cutter rolls are rotated in opposite directions, and each feeder-stripper roll is rotated in the same direction as the cutter roll with which it is intermeshed, thereby feeding scrap material between the two feeder-stripper rolls toward the cutter rolls. The feeder-stripper discs extend deeply between the cutter discs to eliminate clogging. The feeder-stripper rolls may be movable to provide greater separation for receiving and feeding larger pieces of scrap material into the casting mechanism.

Abstract: A shredder includes a pair of blade assemblies operated at high speeds to receive and shred paper material, such as notes or coupons. The blades of the assemblies are disposed to contact and overlap each other. Means are provided to control the amount of overlap and loading of the blades.

Abstract: A classifying and sorting machine for refuse particles, particularly household refuse and other refuse having a composition resembling household refuse, has a rotatable screen drum the diameter of which is within the range of 1:1-1:2 relative to its axial length. Baffles of sawtooth-shaped configuration are arranged in the drum rotating with the same and having inwardly directed ripping teeth. Annular baffles in the drum subdivide the drum into two or more axially adjacent compartments and each have an inner diameter smaller than the inner diameter of the drum, and an arrangement is provided for rotating the drum at an angular velocity which is smaller by between about 20-50% than the velocity at which the drum contents are pressed by centrifugal force against the circumferential drum wall.

Abstract: A device for comminuting waste material, such as turnings or the like, is provided with two shafts, which are driven in opposite senses of rotation and are parallel to each other and comprise disc-shaped knives, of which the knives of one shaft engage respectively between the knives of the other shaft. The shafts are arranged in a knife box which has an upper inlet opening and a lower outlet opening and which has two external walls extending substantially parallel to the shafts. Between the knives of both shafts, stripping fingers are arranged, in the circumferential areas directed towards the external walls. The stripping fingers have a stripping end which is arranged at a short distance from the shaft and a top that is directed towards the inlet opening which is designed as a sliding surface inclined in the direction of the respective external wall of the knife box. The knife box also has by-pass openings on both sides in the sliding surface end areas.

Abstract: A machine for comminuting clay stock. The machine includes a rotating body and a plurality of cutter blades attached to the body for rotation therewith. Clay stock is directed onto the body by a feed hopper. A non-rotating crowder mechanism is associated with the cutting blades to crowd portions of the clay stock against the rotating cutter blades whereby particles of clay are cut from the clay stock. A plurality of upwardly extending lugs are attached to the body for rotation therewith. A plurality of teeth members are attached to the crowder mechanism for coacting with the lugs to prevent rocks and the like from being crowded against the cutter blades.

Abstract: A pair of cooperable rotatable discs of differing shape are supported in a housing for crushing hard and/or abrasive materials. A first one of the discs is planar in shape and is horizontally supported for rotation about a vertical axis. The cooperating disc is of conical shape, and is movable toward and away from the first disc along a second oblique axis, and is also supported for rotation in the housing about such oblique axis. Material to be crushed is deposited on the horizontal surface of the first disc, and after being crushed between the discs is carried by the first disc to be swept into the bottom of the crusher housing by means of a first rake or comb located above the upper material-bearing surface of the first disc. A second rake affixed to the lower surface of the first disc aids in discharging the crushed material from the bottom of the housing through an outlet chute.

Abstract: Apparatus is disclosed for the heat treatment of thermoplastics containing industrial and domestic refuse, as well as plastics waste. The refuse or waste is previously comminuted to a size capable of being treated in the process, then fed into the apparatus which is a crushing roller press. The press has a rotatably driven roll in a machine body, the machine body and the roll forming a converging infeed gap and two crushing gaps along the circumference of the roll. Just before a charging hopper there is a discharge opening provided with an adjustable scraper.

Abstract: A rotor is mounted rotatably in a housing. A plurality of hammer cylinders are rotatably mounted on the rotor and are radially spaced from the axis of rotation of the rotor as well as being equidistantly circumferentially spaced from each other. Hammer cylinders crush concrete to be recycled against a plurality of breaker cylinders which are yieldably mounted for protection against ingestion of uncrushables. The rotatable mounting of the various cylinders insures that a fresh surface will continuously be presented in order to spread the wear due to impact over the entire surface of the cylinder.