Abstract: A roll crusher for crushing lumpy material particularly coal and other minerals comprises a conveyor trough having a trough bottom with a plurality of longitudinally extending laterally spaced chains trained to run over the trough bottom and move through a path from beneath a crushing roller of the roll crusher. The crushing roller is rotatably mounted above the trough bottom and has a rotatable shaft portion with a plurality of radially extending axially spaced and angularly offset striker portions along its length. A plurality of pushers extend laterally between and interconnect adjacent strands so as to form a chain mat type structure of the conveyor which moves along the trough beneath the crusher roll. The chains are spaced laterally apart by spacing comprising a clearance selected to be equal to or less than the maximum grain size to be formed in the material by the crusher.

Abstract: A sinter crushing machine having a crushing screen and a crushing roll, the screen having hollow teeth with nozzle means for directing a spray of coolant over the working surfaces thereof and the roll having hollow spikes with nozzle means for directing a spray of coolant, such that the working surfaces of the screen and roll are respectively cooled by a substantially uniform amount of coolant at substantially uniform temperatures.

Abstract: An apparatus for reclaiming material primarily used in the fabrication of foundry molds is provided in which the sand in the form of large chunks of mold is introduced into a vibrating conveyor and carried initially to a rotary hammer assembly. The chunks are chopped into finer pieces which fall back into the conveyor and are moved into a vibrating drum assembly which causes the pieces to self-abrade into particles. When the particles reach a predetermined size, they leave the drum through a perforated gate means and fall back into the conveyor which carries the particles to a vibrating screen. Particles passing through the screen are then removed for further processing.

Abstract: A device for crushing sinter and other material of like consistency is disclosed wherein the flow sinter material is deployed against an impact table which directs the sinter material downward onto a series of vertically disposed discs fixed to a common means of rotation. The common means of rotation intersects each disc through its central axis. Adjacent to the discs and parallel to the common means of rotation is positioned a shaft upon which are mounted crusher means arranged to intersect and pass between the discs. As sinter is directed downward onto the discs, the crusher means rotates and forces the sinter between the discs, thus crushing it. Heat buildup in the discs is controlled by a means of cooling which impinges on the discs.

Abstract: Apparatus for delivering ice from an ice body maker to an ice delivery area selectively in the form of ice bodies or as crushed ice. The ice crusher is mounted in a housing and includes first and second crusher arms mounted to a rotatable shaft therein. A stop is provided for preventing rotation of the second crusher arm while permitting the first crusher arm to continue rotation with the shaft. The relative movement between the crusher arms effects a crushing of the ice bodies so as to permit the ice to then be delivered to the delivery area in the form of crushed ice. When the stop is positioned so as to permit rotation of both the first and second crusher arms with the shaft, the ice bodies are delivered intact thereby to the delivery area. The stop is arranged to prevent rotation of the second crusher arm in either direction when disposed to prevent movement of the second crusher arm with the shaft.

Abstract: Upper and lower rotors are offset in position, such as at an angle of 60.degree., between their centerlines, with the upper rotor having larger hammers and rotated at a lower speed than the lower rotor having smaller but a larger number of hammers. The feed is to the top of the upper rotor, and heavy interception bars extend perpendicularly to the centerline between the rotors and are disposed between the sets of hammers of the lower rotor, to prevent the entry of large objects into the lower rotor, to form an anvil against which objects on the bars are impacted by both the upper and lower hammers, with the lower hammers also "nibbling away" on the objects. A U-shaped corner formed of heavy armor plate is positioned next to the interception bars and extends between the circles of rotation of the hammer ends.

Abstract: An improved apparatus for cutting scrap tires is disclosed wherein compressed scrap tires are cut. A scrap tire is compressed, then fed into a plurality of rotary disc cutters axially spaced along a shaft and rotated against a stationary anvil. In the preferred embodiment, cutting tools are vertically mounted on the rotary disc cutters, whose outer circumference is recessed in a concave arc starting at the top of the cutting tool and ending at that portion of the cutting tool closest to the center. The cutting tools are off-set along successive rotary disc cutters rather than placed in a line parallel to the shaft. Anvil tools having at least one cutting edge are mounted on the stationary anvil for ease in maintaining cutting edges opposite the rotating cutting tools. Cleaner bars facilitate the removal of cut scrap tires from the rotary disc cutters and their subsequent collection.

Abstract: A leaf collector and comminutor is disclosed having a collection receptacle in the form of a bag and a housing for delivery of comminuted tree leaves into the bag, the housing having thereon a motor driven rotary blade assembly, having a fan portion and a leaf comminuting portion resiliently mounted on the fan portion, for the suction collection and comminution of the leaves to reduce their bulk and for delivery of the disintegrated leaves into the bag, a spring held shearing bar being provided with openings for passage of end portions of the blades, the mounting of the leaf comminuting portion of the blade and the mounting of the shearing bar providing safety features in the event that sticks or stones enter the housing.

Abstract: A machine to comminute refuse includes a drum-like rotor on a rotor axle inside a housing. The rotor includes two face-to-face outwardly diverging part-conical discs each supporting a plurality of shear plates which have spaced-apart teeth along outer edges thereof. The teeth of each shear plate lie in a plane which includes the axis of said rotor and extends radially outwardly therefrom. An anvil in said housing also has spaced-apart teeth positioned to be in intermeshing relation to the shear plate teeth as the shear plates rotate with the rotor. Rubbish to be comminuted is fed into the machine at position directly above the axle of the rotor and is carried by the shear plates and shear teeth into contact with the anvil and anvil teeth, shearing off the portions of the refuse aligned with the shear plate teeth and carrying this refuse through to position under the rotor where it is discharged vertically from the machine.

Abstract: A combination tub comminuting apparatus and blower for simplifying and reducing the number of moving parts in a forage comminuting means. The comminuting portion comprises rotor means which rotates on a radius of the tub and is situated in an opening extending from near the edge of the tub to a point which is near the center of the tub. Since the forage is fed to the end of the cylinder described by the rotor rather than to the sides as in normal comminuting means, the length of the cylinder is very short compared to the diameter. The beating means grab the forage and pull it into the enclosure in pieces. Some embodiments of the concept include teeth on the stator enclosure for the rotor to provide further comminution before the rotor executes its final step of forcefully discharging the comminuted forage, via the beating means, in a blower-type action.

Abstract: In order to grind refuse, such as municipal waste, two horizontal rotating elements, each carrying a plurality of radiating swinging hammers pivotally attached to discs spaced from each other, are driven in meshing rotation within a housing, the lower inner portion of which presents a series of grate bars extending radially inwardly toward, but spaced from the ends of the swinging hammers. Because the two elements are interconnected for synchronized rotation, the inertia of one element is added to the inertia of the other element to overcome surges of refuse arriving at the entrance of the grinder, which surges might otherwise stall the motor driving only one element. Stationary impact shear bars may be provided at the refuse entrance area of the housing to mesh with the rotating hammers, thereby to cause the ejection of uncrushable objects.

Abstract: For facilitating the grinding of clumps of crop material by a hammermill mechanism mounted below an opening formed in a stationary bottom wall of a tub grinder machine, an elongated plate is mounted to the bottom wall along a crop material receiving edge of the opening therein. A longitudinal marginal edge portion of the plate is bent downwardly at a slight acute angle relative to the plane of the mounting portion of the plate so as to extend into the opening generally toward the hammermill mechanism. The bent edge portion of the plate has a series of spaced apart notches or spaces formed therealong which gradually widen toward the edge of the plate so as to define a series of spaced apart, tapered and generally co-planar teeth which facilitate the ability of hammer elements of the hammermill mechanism to disintegrate crop material clumps passing through the opening over the teeth and strip disintegrated material residue from the teeth.

Abstract: A comminuting machine for trash has a generally closed housing provided at its top with an inlet and its bottom with an outlet. A rotor is provided in the housing and has at least one radially extending beater element that orbits on rotation of the rotor in a predetermined sense about a horizontal axis. An impact member is provided in the housing generally above the axis and spaced radially from the orbit of the beater element, the inlet being upstream of this impact member relative to the rotational sense of the rotor. A crusher plate is pivotally mounted in the housing generally below and downstream of the impact member and may be pivotally displaced between an effective position spaced radially relatively close to the rotor and an ineffective position radially relatively far from the rotor. A grate is displaceable through a sidewall of the housing between a withdrawn position outside the housing and an operative position under and relatively closely spaced from the rotor at the outlet.

Abstract: An improvement in an apparatus for processing waste products, the improvement making it possible effectively to process cardboard or wooden boxes. The apparatus comprises comminuting means including a motor-driven drum having essentially radially projecting teeth arranged on said drum and an anvil for cooperation with said teeth for comminuting the waste products. In addition hereto, the apparatus comprises a downwardly sloping supply duct for the waste products opening in the housing above the drum, and feeding means arranged at the discharge end of the supply duct, said feeding means being rotated. The improvement of the apparatus is that carrier means comprising pins or pegs are disposed on said feeding means and project radially outwards.

Abstract: A machine for chopping polymers, and in particularly elastomeric materials such as tires, into uniform small size particles through the use of a rotating cutting head having teeth that have side cutting edges generally perpendicular to their outer end edges, which are parallel to the axis of rotation, and interfit with stationary teeth formed in complimentary shape. The cutting head is used in combination with a material infeed mechanism that maintains a steady, positive feed of material to reduce the elastomeric material into uniform small chunks that can be used for fuel, or otherwise more readily disposed than the present large size tires or similar articles.

Abstract: A shaft which rotates at high torque and low speed has a plurality of upright plates which are slightly shorter than the inlet funnel in which it is fitted. Stripper fingers in fixed locations protrude towards the shaft and extend between the plates. A wall having a circular arc form emanates from the rear of the inlet funnel and goes over tangentially into a smooth bottom of an outlet chute to which a back pressure device can be connected.

Abstract: A plate is detachably securable to the bottom of a conventional lawn mower. The plate covers approximately half of the bottom but leaves the portion open at the rear. A specifically altered cutting blade of the mower, driven by the motor, rotates over the top of the blade. Fixed blades attached to each end of the rotating blade cooperate with fixed fingers fixed to the plate to shred leaves picked up by the mower. The mower, with the device attached, can be placed on top of a stand that has an open front into which leaves may be raked. Thus, a fixed leaf shredder is formed, into which piles of leaves can be raked for efficient shredding and bagging.

Abstract: A refuse disintegration device including a casing having a chamber therein, inlet means communicated with the chamber for introducing refuse which should be disintegrated and at least one rotatable shaft extending through the chamber, which shaft is connected to a drive means which rotates the shaft. A set of spaced apart rotary knives are fixably mounted on the shaft in the chamber, whereas a set of stationary knives are arranged in the chamber so that they extend traversally to the axis of the shaft. Each of the stationary knives is fixably mounted to the casing at both ends thereof. The rotary knives and the stationary knives are alternately arranged to each other so as to thereby effect disintegration of the refuse into chips upon the rotation of the rotary knives.

Abstract: The shredding unit comprises a horizontal drum mounted transversely within a cage having a front feed opening. Knives are rigidly fixed on the circumference of the drum which is partially surrounded by an evacuation grid having calibrated holes. In the active or work position, backing knives placed in alignment at each end of the grid and opposite to the drum project inwards from the grid while the knives of the drum pass in the immediate vicinity. Each backing knife is mounted at the extremity of a support plate and is capable of withdrawing under excessive pressure in opposition to a jack which urges the backing knife towards the active position.

Abstract: An onion slicer comprises a drum-shaped body composed of a bottom part and a removable upper part. The upper part contains a plurality of fixed radially disposed bars forming a grating, a rotatable cutter shaft, and a plurality of knife blades attached to the shaft and adapted to pass through the gaps between neighboring bars when the shaft is rotated.