Abstract: An apparatus for roughage processing includes a first platform for placing of a first type of roughage, a first cutting mechanism for processing the first type of roughage, a first chain for cutting the first type of roughage from the first platform to the first cutting mechanism; and a second platform, a second cutting mechanism, and a second chain for performing similar tasks with a second type of roughage. The first chain and the second chain are driven at a different speed to provide concurrent cutting of the first and second types of roughages at different cut sizes. The apparatus further includes a conveyor for concurrently collecting the first type of roughage and the second type of roughage after respective processing by the first cutting mechanism and the second cutting mechanism for effective blending of the two types of roughages, each of which has been cut differently to obtain its optimum particle size for ruminant consumption.

Abstract: Musical cymbals are mounted on a tripod stand using a threaded rod which is several inches in length. A conventional nut is then threaded on the rod which has to be turned a multiple number of times until the nut abuts the cymbal thereby securing the cymbal on the rod. Using the slip nut assembly of this invention eliminates this time consuming installation procedure of the nut and similarly eliminates the time consuming uninstalling of the nut when the musician is to move to a different playing location.

Abstract: A filling tube for a food processing apparatus of the type having a cutting disc that cuts or chops the food present at the base of the filling tube. The filling tube includes a pushing piston that presses the food against the disc. The piston is connected to a lever through a crankshaft mechanism. The piston is guided by a series of semi-guides arranged along the stroke of the piston, there being at least one fixed semi-guide attached to the inner walls of the tube and one moving semi-guide that moves together with the piston.

Abstract: A mill for shredding scrap, comprising a shredding chamber able to contain scrap during the shredding and having a shredding unit, an inlet pipe connected to an opening of the shredding chamber, in order to transfer the scrap toward the shredding chamber. The mill comprises first thrust means associated with the inlet pipe, selectively movable between a loading position of the scrap into the inlet pipe and one or more intermediate positions to transfer by means of thrusting the scrap toward the shredding chamber. The mill also comprises second thrust means, disposed in proximity with the inlet of the shredding chamber, selectively movable between an inactive position, in which they do not interfere with the introduction of the scrap into the shredding chamber by the first thrust means, and one or more thrust positions in which they introduce into the shredding chamber the scrap moved by the first thrust means until the scrap is in proximity with the opening.

Abstract: A grinding apparatus for dispensing a dose of ground frozen material starting from a frozen block includes a grinding unit for grinding the frozen block in order to provide an amount of ground frozen material and a feeding unit for feeding the frozen block to the grinding unit. In particular, the feeding unit includes a feeding member that is adapted for moving frozen block for a desired predetermined grinding stroke against grinding unit such that a grinding length of block is ground. A grinding unit provides at least one grater and one motor for causing the grater to rotate. In order to obtain a desired weight of the dose, a volume of frozen material is calculated that corresponds to said weight, since the density of the frozen material is known.

Abstract: A cheese shredding apparatus has a table top with a rolling platform that uses 2 pairs of beveled wheels. A partitioned hopper for containing blocks of cheese. A pair of cutting grids located at opposite ends of a cutting block. A pair of push cube modules. A motor powers the rolling platform by way of a cam which converts a rotational motion from the motor into a linear motion which actuates the back and fro motion of the rolling platform. The beveled wheels roll on a pair of tracks which are held within the table top frame. The beveled wheels maintain a very precise and accurate tracking motion of the rolling platform as they move back and forth as guided by the tracks.

Abstract: A device for processing foodstuffs in accordance with an embodiment of the present disclosure includes an upper part, a drive mechanism and a lower part with a working container, in which a working unit can be manually driven and made to rotate by means of the drive mechanism. The drive mechanism includes a tractive cable drive and is operatively connected to the working unit by means of a releasable torque-coupled connection. The drive mechanism also includes a primary and secondary drive unit, which are operatively interconnected by means of a gear in such a way that a transmission ratio of between 1:1.5 and 1:4 and preferably between 1:1.8 and 1:1.9 is achieved. The primary and secondary drive units are axially parallel and dimensioned in such a way that at least one of the drive units intersects the rotational axis of the other respective drive unit.

Abstract: A device for mechanical defibration of wood comprises a defibration surface for processing of wood raw material and loosening of fibers, said defibration surface comprising grinding grits fastened on a metal base surface. The grits (1) fastened on the metal base surface (2) are positioned within a determined distance from each other on the base surface, so that they form a regular defibration surface.

Abstract: A chipper device for chipping one or more metal ingots. The chipper device includes a cutter head and a guide mechanism associated with the cutter head. The guide mechanism includes a chute having a passageway. A feed mechanism is adapted to move one or more ingots sequentially through the passageway of the chute into engagement with the cutter head, whereby the cutter head chips the ingots into a plurality of particles.

Abstract: A machine for distributing blowing wool from a bag of compressed blowing wool includes a chute having an inlet end and an outlet end, the chute being configured to receive the bag of compressed blowing wool. A ram assembly has a ram member configured to drive the compressed blowing wool from the bag toward the outlet end of the chute while maintaining the bag in a relatively fixed position with respect to the chute. A shredder is mounted at the outlet end of the chute and configured to pick apart the compressed blowing wool. A rotary valve distributes the blowing wool into an airstream.

Abstract: Apparatus for shredding or pulling pieces of meat, which includes a feed hopper carried on a body, a removable shredder roller assembly in the body for shredding the meat, which includes a shredder roller, and a backer plate, which can be adjusted to vary the texture of the shredder meat product, and an electric motor to rotate the shredder roller.

Abstract: In a method and apparatus for comminuting waste to minimise the risk of damage to the apparatus and to provide quick flexible reaction to changing operating conditions the comminuting apparatus includes a drive unit having at least one electric motor in the form of a between 12-pole and 32-pole three-phase synchronous motor operating at a rotary speed of between 1 and 500 rpm. The motor is electrically connected to the output of a frequency converter controlled by a control device. The drive shaft of the motor is connected without interposed transmission directly to the comminuting shaft and no torque- and/or force-transmitting drive element rotates more quickly than the drive shaft of the motor.

Abstract: A method of feeding a wood batch into a pressure grinder, the method comprising first collecting the wood batch to be fed into the grinder into a separate batch chamber above a side feeding chamber, from which the wood batch is lowered vertically by means of a separate supporting plate to the side feeding chamber. Thereafter, the wood batch is transferred from the side feeding chamber into the feeding chamber. An arrangement for feeding a wood batch into a pressure grinder comprises a batch chamber above a side feeding chamber and in which the wood batch to be fed into the pressure grinder is formed before it is lowered into the side feeding chamber.

Abstract: An apparatus for comminuting waste of synthetic plastic material has a housing (1) in which at least one rotor (2) is bearingly supported for rotation around a preferably horizontal axis by a motor. The rotor (2) is provided on its periphery with comminuting tools acting onto the supplied material, in particular knives 6, counter tools, in particular counter knives (8), assigned to the knives, being stationarily disposed within the housing (1) forming a supply well (7) of great volume. The material disposed within the supply well (7) is pressed against the rotor (2) by a supply arrangement which has at least two slides (17, 18) superimposed above each other and supplying the material to the rotor (2). The slides are independently from each other moveable against the rotor (2) or away from it.

Abstract: An apparatus and method for shredding a block of material, the apparatus includes at least one cutting blade. A drive unit rotates the cutting blade about an axis, and a feed unit moves the block of material toward the cutting blade. The axis about which the cutting blade is rotated is generally perpendicular to the direction in which the block of material is being fed. In one embodiment, the block of material comprises a plurality of ribbons, the ribbons being stacked atop each other. In one preferred embodiment, the cutting blade comprises a serrated edge, and the distance between the teeth in the serrated edge is less than the thickness of each ribbon. In another embodiment, the shredding unit includes a plurality of blades on a rotatably driven drum.

Abstract: A method of feeding a wood batch into a pressure grinder, the method comprising first collecting the wood batch to be fed into the grinder into a separate batch chamber above a side feeding chamber, from which the wood batch is lowered vertically by means of a separate supporting plate to the side feeding chamber. Thereafter, the wood batch is transferred from the side feeding chamber into the feeding chamber. An arrangement for feeding a wood batch into a pressure grinder comprises a batch chamber above a side feeding chamber and in which the wood batch to be fed into the pressure grinder is formed before it is lowered into the side feeding chamber.

Abstract: An apparatus is provided for cutting oversized wood chips smoothly and uniformly, such that the resulting chips are of optimum size and shape for use in making paper, cardboard, and other recyclable materials. A method is provided for aligning and guiding oversized wood chips through an array of spaced-apart saw blades using a reciprocating plunger controlled to continuously align and sweep the wood chips completely through the saw blades. The method and apparatus can be adapted to produce a variety of desired wood chip sizes.

Abstract: An apparatus for destroying articles that has a cutter rotatably mounted adjacent a feed opening of a chamber containing articles to be destroyed. A ram is mounted in the chamber and is movable in a first direction toward the cutter. A plate forms the bottom surface of the chamber, and the plate has a plurality of grooves extending in the first direction. A wiper is mounted on the front of the ram, and the wiper has a plurality of teeth located in respective grooves in the plate. Thus, the plurality of teeth in the grooves prevent articles from sliding beneath the ram as it pushes articles into the cutter. In another embodiment, a segmented wiper is mounted on a first side wall, the segmented wiper has a length extending across an irregular upper surface of the ram, the segmented wiper further has a plurality of independently movable wiper teeth that are in substantially continuous contact with the irregular upper surface of the ram.

Abstract: An apparatus and method for shredding a block of material, the apparatus includes at least one cutting blade. A drive unit rotates the cutting blade about an axis, and a feed unit moves the block of material toward the cutting blade. The axis about which the cutting blade is rotated is generally perpendicular to the direction in which the block of material is being fed. In one embodiment, the block of material comprises a plurality of ribbons, the ribbons being stacked atop each other. In one preferred embodiment, the cutting blade comprises a serrated edge, and the distance between the teeth in the serrated edge is less than the thickness of each ribbon.

Abstract: An improved method and apparatus which cuts certain wood pieces, commonly referenced as “mill ends,” such that the chips can be used to make paper, cardboard and other recyclable materials. The use of a horizontal drum in combination with a horizontal anvil and a “moving cavity” which orients elongate elements, is likewise contemplated.

Abstract: A method and apparatus for reducing the size of wood members, particularly pan-shaped wood members known in the industry as “lilypads”, such that the orientation of the fibers of the lilypads are encouraged to be substantially perpendicular to the longitudinal and rotation axis of a cutting drum having a plurality of cutting members extending from its circumferential surface.

Abstract: An apparatus and method for shredding a block of cheese, the apparatus includes at least one cutting blade. A drive unit rotates the cutting blade about an axis, and a feed unit moves the block of cheese toward the cutting blade. The axis about which the cutting blade is rotated is generally perpendicular to the direction in which the block of cheese is being fed. In one embodiment, the block of cheese comprises a plurality of ribbons, the ribbons being stacked atop each other. In one preferred embodiment, the cutting blade comprises a serrated edge, and the distance between the teeth in the serrated edge is less than the thickness of each ribbon.

Abstract: The invention relates to a method and a device for the on demand preparation of beverages or sauces from water-dispersible foodstuffs. The device includes one or more pressing units that urge one or more solid refills of a water-dispersible foodstuff towards one or more abrading devices so that the refill contacts the abrading device and the abrading device abrades the refill to provide an amount of powdered foodstuff that is collected in a collector and combined with water to provide the beverage. The invention also relates to a refills for use in the device of the invention and a process for manufacturing the refills.

Abstract: An arrangement in a pulp grinder comprising a grindstone (1), a feed chute (2), and a piston to feed wood (3) against the grindstone (1). The arrangement comprises separate pushing members (6), which are arranged to push the wood (3) against the grindstone (1) at essentially the entire width of the feed chute when the percussion piston is moved back to the stroke position to allow the feed of a new batch of wood.

Abstract: A method and apparatus for reducing the size of wood members, particularly pan-shaped wood members known in the industry as "lilypads", such that the orientation of the fibers of the lilypads are encouraged to be substantially perpendicular to the longitudinal and rotation axis of a cutting drum having a plurality of cutting members extending from its circumferential surface.

Abstract: An arrangement for providing continuous grinding in a pulp grinder comprising a feed chute and a piston in the feed chute moving lengthwise of the feed chute for pressing the wood in the feed chute against a grindstone. The arrangement comprises rotary feed members between the piston and the grindstone on the sides of the feed chute for pushing the compressed wood further against the grindstone. Also, the arrangement comprises a closing member that can be pushed between the compressed wood and the piston to prevent the wood from moving backward with the piston as the piston is moved to the initial position, ready for the stroke, to allow the feed of a new batch of wood.

Abstract: An arrangement in a pulp grinder comprising a grindstone, a feed chute extending to the grindstone, a piston moving in the feed chute, an auxiliary piston and closing members. In the arrangement, there are recesses on the front of the piston and apertures in the auxiliary piston so that the closing members can be pushed from both sides of the feed chute through the auxiliary piston to the recesses of the piston so that they settle behind the wood pressed by the piston.

Abstract: An apparatus for pulverizing a collection of pieces of materials such as vulcanized rubber to create a very fine powder. The apparatus includes a piston and a cylinder which places the material to be pulverized under extremely high pressure of at least 1,000 psi and forcing the compressed material out of one or more exit ports. These exit ports are located at the end of a smoothly narrowed channel leading to the exit ports. A rapidly moving cutter is positioned so that its path completely covers the exit port. The compressible materials are thus compressed to the point where they have no voids and provide a solid incompressible cuttable face. The rapidly moving cutter creates a fine powder at the exit port.

Abstract: A method and apparatus for reducing the size of wood members, particularly pan-shaped wood members known in the industry as "lilypads", such that the orientation of the fibers of the lilypads are encouraged to be substantially perpendicular to the longitudinal and rotation axis of a cutting drum having a plurality of cutting members extending from its circumferential surface.

Abstract: The present invention is an apparatus and a method of operating a grinder for chipping and shredding material into waste, the grinder including a generally cylindrical drum having an exterior surface with a plurality of pockets formed into the exterior surface. Within each pocket, at least one of a plurality of bits are removably positioned, with each bit having a base securable into the pocket providing an upper cutting edge portion of each bit that extends above the exterior surface. Each upper cutting edge extends outward in an arcuate curving shape from each side of the bit, forming a self-sharpening sharp outer edge for each side of the bit. Each pocket and removable bit has a center line that may be angled off-set with respect to a center line of the radius of the rotor drum, providing protrusion of the leading cutting edge of each bit above the exterior surface so that the leading cutting edges of the plurality of bits are placed in contact with the material to be chipped and shredded.

Abstract: A bale separator for use in separating bales of crop materials. The bale is separated by the action of a rotatable member which engages the bale. The rotatable member includes a central shaft and a number of spaced apart fingers which extend out from the shaft to engage the bale during rotation of the shaft. The separator acts substantially without chopping the bale materials and can be used to separate and spread the bale materials in one operation. The separator can be mounted on a trailer for towing.

Abstract: A trailered, short stroke reduction grinder including a telescoping, multi-stage push ram and hydraulic grinding head which are operable from seat mounted joy sticks in an enclosed operator cabin. Collected reduction materials are pushed to a grinding channel defined between multiple arcuate, sizing screens and the rotating grinding head. A hydraulic shear bar controls the entry of the material to the grinding channel. The grates of the sizing screen are arranged to provide a plurality of reduction apertures of progressively increasing size and differing geometric shape. A single hydraulic motor and belt drive linkage control the grinding head and permit forward and reverse operation. High density plastic slide bearings at cross supports of a discharge conveyor support a ribbed belt.

Abstract: A blocking slab is used in a grinding chamber of a pulpwood grinder having a rotatable grindstone. The pulpwood grinder is suitable for reducing wood into pulp and objectionable shims and shives. The blocking slab includes a retaining side extending the length of the grindstone for permitting the passage of pulp. The blocking slab also includes a plurality of ribs forming a collecting channel proximate the retaining side and extending the length of the grindstone for collecting shims and shives therein. The plurality of ribs are angled for directing the shims and shives collected in the collecting channel toward the ends of the grindstone thus providing further reduction of the shims and shives.

Abstract: A materials grinder has a materials receiving hopper, an exit opening into a shrouded grinding chamber and a powered ram for driving materials accumulated in the hopper to and through the exit into the grinding chamber. As grinding drum is rotatably disposed inside of a shroud adjacent the exit of the hopper to grind the ends of materials to be ground as they enter the grinding chamber and to continue to grinding as the materials are carried downwardly toward the bottom rear of the grinding chamber. The bottom of the shroud is open to receive an adjustable transverse shear bar assembly that is pivotally mounted to provide adjustment of the upper edges of the transverse shear bars with respect to the materials grinder drum.

Abstract: An apparatus for producing shredded aggregate from, e.g., boards of expanded polystyrene, is described. The apparatus includes a shredding box defining a shredding chamber; a rotor housed in the shredding box; means for driving the rotor; a plurality of saw blades coupled to the rotor in linear succession, each saw blade having a plurality of spaced apart teeth, each successive saw blade being coupled to the rotor such that its teeth lie about halfway between the teeth of an adjacent saw blade; receiving means in the shredder box for receiving material to be shredded; and take-away means coupled to the shredder box for removing shredded material from the shredding chamber. Low density (e.g., 0.4-0.5 pcf loose bulk density) material having a uniform particle size distribution over time can be economically produced.

Abstract: A materials grinder has a materials receiving hopper, an exit opening into a shrouded grinding chamber and a powered ram for driving materials accumulated in the hopper to and through the exit into the grinding chamber. A grinding drum is rotatably disposed inside of a shroud adjacent the exit of the hopper to grind the ends of materials to be ground as they enter the grinding chamber and to continue to grinding as the materials are carried downwardly toward the bottom rear of the grinding chamber. The bottom of the shroud is open to receive an adjustable transverse shear bar assembly that is pivotally mounted to provide adjustment of the upper edges of the transverse shear bars with respect to the materials grinder drum.

Abstract: A hammer mill apparatus for comminuting materials such as wood, branches, twigs, leaves, grasses, hay, and the like, features a reciprocating batch feeder for feeding the materials to be comminuted into a rotary grinder. Adjustable and spring biased feed drum and metering roller meters the material into the hammer mill. The positions of a series of adjustable curved grinding teeth changes the sizes of the comminuted particles.

Abstract: A slicing/shaving machine particularly adapted for high speed slicing/shaving or food products in which at least one slicing/shaving blade defines a slicing/shaving edge of a generally arcuate configuration. The blade is carried by a slicing/shaving drum which is rotated about an axis to impart a circular path of travel to the slicing/shaving edge disposed at an angle other than parallel thereto. The product is fed/guided generally radially toward the slicing/shaving edge and is sliced/shaved thereby along the circular path in a continuous high speed fashion.

Abstract: Apparatus for processing solid waste includes a chamber for receiving the waste, which may be any contaminated or non-contaminated waste including paper, plastics, cloth, metal and hospital sharps, and a ram for forcing the waste, to which germicide may be added, into contact with a plurality of cutting heads. The cutting heads which shred, shear and cut the waste are each mounted on an elongated rotating shaft. Each cutting head includes a plurality of parallel cutting blades separated by spacers. Adjacent cutting heads mesh together so that cutting blades of one cutting head interdigitate with spacers of an adjacent cutting head. A pair of curved doors close the chamber closely adjacent the cutting heads while the waste is being cut, and are opened for releasing the cut waste. The doors include elongated parallel grooves alternately for receiving the cutting edges of the cutting blades and for receiving the spacers.

Abstract: A wood pulp grinder includes a grinder housing for supporting wood to be ground above a grindstone. A main press chamber in the grinder housing supports a main press ram which moves toward and away from the grindstone. When the main press ram is upraised, the main press chamber is charged with wood to be ground. Adjacent one or both circumferential sides of the main press chamber is disposed a respective auxiliary press ram with is movable toward the grindstone independently of the motion of the main press ram for retaining pressure upon the wood in the grinder housing while the main press ram is not pressing upon the wood. The auxiliary press ram or rams are relatively long in a lengthwise direction, having a length equal to fifty percent and preferably at least eighty percent of their active press stroke. The active lower surface of the auxiliary press ram may be inclined generally in a direction tangent to the surface of the grindstone or may be curved convexly toward the grindstone.

Abstract: A method of regulating a grinding process in a pocket grinder pressing a wood batch in at least one pocket against a rotating grindstone with a grinding plate movable in the pocket calculates the apparent pulp quantity produced at measuring points at fixed intervals of the grinding stroke and changes in the wood batch density which occur during the grinding stroke. The value thus calculated is compared with a target value for the pulp quantity to be produced and the grinding process regulated thereby to reach the target value. To make the pulp quantity produced as even as possible, the calculated value of the apparent pulp quantity produced is corrected in relation to the hydraulic pressure used during the grinding stroke.

Abstract: A treating process for the separation of coated nuclear fuel particles from a graphitic matrix in which the nuclear fuel particles are embedded, which is employed in an installation for the conditioning of graphitic fuel elements of high-temperature nuclear reactors. The graphite which encompasses the nuclear fuel particles is conducted away through the action of a brush which isolates the nuclear fuel particles together with their coatings or the nuclear particles themselves, and wherein the nuclear fuel particles which are contained in the brushed product are then separated from the comminuted graphite. The nuclear fuel particles are worked out of the graphitic matrix through the action of the bristles of the brush which conduct the graphite away, but in which the coated nuclear fuel particles when they are contained within hard coatings or the nuclear fuel particles themselves, remain preserved.

Abstract: Frame construction for a pressure grinding machine of press type, which frame construction comprises a gastight, pressure-proof grinding chamber, bearing housings for a grinder member revolving in the grinding chamber, as well as at least one press chamber for the pulpwood and a press device limiting the press chamber on one side. The frame construction consists of two separate parts, namely a pressure frame, which constitutes the said grinding chamber and press chamber and which substantially receives the pressure forces resulting from the positive pressure prevailing in the grinding chamber, and a power frame, which connects the press device and the bearing housings of the grindstone to each other and which substantially receives the tensile and circumferential forces resulting from the grinding and from the pressing of the wood against the grindstone.

Abstract: A method for feeding a wood batch into a pressure grinder, according to which method the wood batch is first fed into a pressurizable feeding device (9) and thereafter from the feeding device into a continuously pressurized grinding chamber (5) to make contact with a grinding means (3) rotating in the grinding chamber. The wood batch is fed from the feeding device into the grinding chamber essentially in a horizontal plane in the direction of the axis (4) of rotation of the grinding means for maintaining proper order of the wood batch during the feeding operation. In a feeding device for carrying out the method the feeding device (9) is positioned on the side of the grinding chamber (5) so that the bottom (10a) of the feeding pocket (10) formed by the feeding device is essentially in level with the bottom (5a) of the grinding chamber. The feeding device is provided with a pushing means (17) displaceable in the feeding pocket towards the grinding chamber in parallel with the level of the bottom.

Abstract: A bale handling and shredding apparatus is described including an elongated conveyor pivotally mounted on a wheeled frame such as a trailer or the like adapted to be pulled by a prime mover. The conveyor comprises a pair of elongated conveyor members which are pivotally mounted on the frame so that the rearward end of the conveyor may be positioned adjacent the ground to enable a plurality of bales to be conveyed forwardly on the conveyor. A bale shredding apparatus is pivotally mounted at the forward end of the frame at one side of the conveyor. A push arm assembly is mounted on the bale shredding apparatus and is adapted to push the forwardmost bale on the conveyor laterally into the bale shredding apparatus. The bale shredding apparatus shreds the bale and deposits the shredded hay or the like at one side of the trailer as the trailer is being moved through the field or feedlot.

Abstract: A blocking slab for a pulp grinder, which blocking slab comprises a striplike frame to be mounted between a wall of a grinding chamber in the grinder and a grindstone, said frame being parallel to the axle of the grindstone. In order to prevent splinters and chips from getting out of the grinding chamber, the frame is provided with a longitudinal retaining edge facing to the peripherical surface of the grindstone. The retaining edge has at least one longitudinal recess, which is limited by two longitudinal retaining ribs, to prevent splinters and chips from getting out of the gap between the grindstone and the blocking slab.

Abstract: An apparatus for comminuting crop includes a duct through which the crop is fed by a reciprocating piston with the duct having reciprocating knives extending thereacross for cutting the crop. The knives are spring-mounted for movement under crop pressure in the horizontal plane against the returning influence of a compression spring.

Abstract: The speed of feed movement of a piston is controlled to an essentially constant value by direct digital measurement of the actual speed, by comparing the actual value to a preset value and by compensating for differences therebetween. Variations in the piston feed pressure and in the grinding power are taken into account by means of additional signals related to these factors and added to or subtracted from the signal representing the actual value of the speed of the piston.

Abstract: A treating process is provided for the separation of coated nuclear fuel particles from a graphitic matrix in which the nuclear fuel particles are embedded, and an installation provides for the conditioning of graphitic fuel elements of high-temperature nuclear reactors. The graphite which encompasses the nuclear fuel particles is conducted away through the action of a brush which isolates the nuclear fuel particles together with their coatings or the nuclear particles themselves. The nuclear fuel particles which are contained in the brushed product are then separated from the comminuted graphite.

Abstract: The invention concerns a pulp grinder in which feed devices force the wood against the grinder stone and in which there is an elevated level of water in the grinding zone. Sealing devices or plates extend between the walls of the wood-supply chutes or pusher chambers and the grinder stone to keep the water level high only in the grinding zone. The sealing plates are adjustable for controlling the liquid level in the grinding zone.