Abstract: A machine for reducing worn-out vehicle tires to small chip-like particles comprises a frame on which an elongated shaft is journaled for rotation, the shaft having a first and second plurality of rotary cutting blades, each of a different diameter affixed to the shaft so as to be rotatable therewith. Also affixed to the frame is a set of stationary cutter bars whose sharpened edges are disposed within a predetermined close tolerance to the periphery of the rotary cutting blades. A large, massive flywheel is attached to one end of the shaft and is driven by a suitable motor. Surrounding the rotary cutting blades is a shroud which, in turn, suppots an infeed hopper having a spiked drum journaled therein.

Abstract: The invention comprises a machine for slicing food products into then strips. Two stacks of spaced, axially aligned circular blades are positioned so as to be driven in counterrotating intermeshing relationship. Each of the blades comprises a central hub connected to a peripheral cutting ring by a plurality of spokes. Spacers are provided between adjacent ones of the circular blades. The stacked blades are assembled with the spokes of succeeding ones of the blades displaced by a predetermined angular amount, so that the spokes define a plurality of helical paths through the interior of the stacks. As the blades are rotated the food product is sliced by being forced between the spaced blades, and the resulting strips are deposited within the interior of the stack to travel along the helical paths defined by the spokes and be discharged at the end of the stack.

Abstract: A secondary waste apparatus for shearing waste material such as a discarded vehicle tire which has already been reduced in size by a primary shearing process. The apparatus includes a pair of counter-rotating shafts, each shaft having a plurality of generally annular shear members extending in a unitary construction from an abutting relationship with the shaft to an outside diameter which meshes with the shear members of the other shaft. The ratio of the diameter of each shaft to the maximum radial extent of the shear members abutting the shaft being greater than 3:5. Adjacent shear members on a shaft are spaced apart by a driving spacer and one or more grind-depreciable shims. Waste material from a primary shearing process is fed into the apparatus to further reduce the maximum size of the material. The apparatus is periodically sharpened by grinding of the shear members and the shims.

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: This invention relates to a shredder which has a single rotating shaft with a plurality of large and small diameter blades in a side-by-side relationship down the length of the shaft. The blades cooperate with fixed shear bars mounted on the first and the second side of the shredder. The shredder can operate in a shredding mode in a forward and a reverse direction. The shredder is driven by a hydraulic motor. The hydraulic motor has a control circuitry, which detects an overload condition in either the foward or the reverse direction. Should an overload condition be detected, the shredder will automatically reverse to eliminate the jammed condition. In normal operation, the shredder cycles for a pre-set time period in a first direction, stops, and then cycles for a second pre-set time period in a reverse direction.

Abstract: Apparatus for crushing, grinding and shredding solid waste material in which two interacting stacks of cutting and shredding elements are positioned on two substantially parallel shafts and mounted transversely with respect to the directions of waste material fed into the apparatus. Cutting members on one stack interact with cutting members on the other stack. In each stack adjacent cutting members are spaced from each other by a spacer. The spacers in the apparatus differ from those used in prior comminutors of this type in that they also have cutter elements on their periphery and thereby serve as cutters or shredders as well as spacers. This double function of the spacers increases the efficiency of the comminuting apparatus. Most importantly there are cutting edges from the bottom to the top of each stack so that there are no intermediate elements on which strings or wires can be wrapped without encountering a cutting edge.

Abstract: A grinding element for a drum refiner for the crushing or grinding of fibrous material. The drum refiner includes an engine driven rotor having a generally horizontal rotor axis and at least one material feed. A rotor jacket is positioned on the rotor and has a surface of revolution. The grinding element is attachable to the rotor jacket on the surface of revolution and has a diameter increasing away from the material feed. A housing receives the rotor and rotor jacket therein, and has an opposing inner wall with a corresponding grinding element thereon. The grinding element on the rotor jacket includes a channel spaced from the material feed for the discharge of steam. The channel has one end in fluid communication with the grinding gap and a second end in fluid communication with a bore extending generally normally to the channel. The bore is in fluid communication with a cavity in the housing. The improvement comprises the grinding element on the rotor jacket being generally formed of a segment.

Abstract: A cutter for a shredder comprising a cutter blade formed by a plurality of rotation blades disposed and spaced parallel to each other on a shaft, and a cylinder made of a resilient material having on the circumference thereof a plurality of annular grooves which are inserted by the blades when those two are assembled with both shafts pivoted on the frame parallel to each other.

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

Abstract: Shear pins indirectly interconnecting breaker rings and shaft components of the rotor assembly of the apparatus are so located and mounted as to be readily replaceable when sheared by relative rotative movement between the components. Relative rotative movement of the components is detected and changes the operating condition of the drive motor and/or a signaling device associated with the apparatus.

Abstract: A cutting tool for shredding machines has two cutting rollers meshing with cutting disks, which have "tooth on tooth" aligned, forwardly tilted, sloping sawteeth. At their tips, the teeth have notches, so that the tips are twice serrated. The slope of the teeth is such that when they engage in the material to be comminuted they face one another in substantially centrally loaded manner.

Abstract: A process and apparatus for treating finely divided powders of brittle materials capable of sintering or injection molding, such as ceramics or intermetallic phases in a predetermined maximum size of the powder particles which is maintained with reliability.

Abstract: A mineral breaker having at least one breaker drum, the drum including a generally cylindrical support body from which a plurality of radially extending projections project by a distance equal to at least half the radius of the body, each projection being covered by a tooth sheath to define a breaker tooth having a maximum radial dimension projecting beyond the circumference of the support body which is greater than a major portion of the radius of the support body.

Abstract: A lawn thatcher assembly including a shaft and a plurality of blades and spacers extending therealong. The shaft has a helical surface thereon, and the blades have a matching helical opening, all of which permits the blades to be slid onto the shaft and present a final helical pattern of blade tips along the length of the shaft. The method of making the assembly is also achieved in this invention.

Abstract: A roller mill according to this invention includes a base and a table supported on the base, the table being adapted to be rotated on a generally vertical axis. The table has an annular groove formed in its top surface, the groove having a semicircular cross section. At least one roller is supported by the base above the table, each roller being rotatable on an axis which intersects with the vertical axis of the table. Each roller has an arcuate peripheral portion which forms part of a circle of curvature in cross section. The roller and the table rotate on their respective axes, and they are adapted to compress and mill material in the groove betweem them, a clearance which receives the material being formed between the peripheral portion of the roller and the groove.

Abstract: Apparatus for the dry defibration of sheets of wood pulp cellulose and like materials comprises a tubular casing to which the sheets to be defibrated are fed substantially radially and a cylindrical rotor rotatably mounted within the casing substantially coaxially of the casing itself. The rotor has external teeth for impinging on the material to be defibrated. The rotor is constituted by a plurality of externally toothed discs and spacer members connected together in a pack in an arrangement in which the spacer members alternate with toothed discs. The general plane of each disc is at a predetermined angle to planes perpendicular to the axis of rotation of the rotor whereby, during rotation, the periphery of each disc describes a respective substantially cylindrical surface coaxial with the axis of rotation of the rotor.

Abstract: A document shredder having a rotary cutter with axially extending rows of teeth, each row having alternating teeth of different heights. The heights of the teeth are selected such that the difference in the heights of the teeth is greater than the height of the smaller teeth. This relationship ensures breaking up of the document into small shreds and allows the cutter to be driven at low speeds, thereby reducing the power requirements and the noise level.

Abstract: An apparatus for dispensing and injecting solid fuel in particulate form into a combustion chamber (10) in measured quantities and at variable rates and intermittencies is described. The apparatus (30) is comprised of a fuel hopper (31), at least one circular disk (50) rotatably mounted with at least a portion of its circumference in communication with the fuel hopper (31). A plurality of pockets (51) are spaced apart around the circumferential periphery of disk (50) for receiving and dispensing fuel from fuel hopper (31) at rates and intermittencies corresponding to the speed of rotation of circular disk (50) and the volumetric capacity and spacing of pockets (51). Circular disks (50) are mounted on a common drive shaft (52) which is driven by a variable speed motor (54). A venturi (80) is provided for dispersing fuel into combustion chamber (10).

Abstract: A plurality of rings is mounted on a shaft for rotation therewith with each ring having a plurality of equally angularly spaced bits mounted thereon to fracture material. Each of the rings has an insert mounted in a recess in its periphery between each adjacent pair of the bits. The insert has an angled edge to fracture, rather than crush, the material between the bits as the rings are rotated.

Abstract: A machine intended for comminuting objects which are bulky and/or resistant to destruction comprises two shafts bearing comminutor rings disposed alternatingly along each of the shafts. The rings are formed of separate elements, at least some of which are comminutor elements having comminutor noses. The elements each have an inverted-U profile and are secured to the shafts by fitting over shaft-collars integral with the shafts. Journal-and-screw assemblies passing through precision bores in the sidewalls of the elements and in the shaft-collars firmly fix the elements to the shaft-collars, and thus to the shafts. The comminuting machine is very sturdy and withstands very high axial mechanical stresses.

Abstract: This is concerned with a liner segment which, when grouped with a plurality of like segments, is usable as a composite wearing element for lining the bowl in a cone crusher or the like. The liner segment may be considered to be generally upright, wider at the bottom than at the top, curvilinear between its sides so as to present a convex surface on one side and a concave surface on the other with integral mounting means projecting from the convex surface.

Abstract: A method and apparatus for milling grain while simultaneously cooking the grain in which the grain is introduced between coaxial relatively rotatable grinding members and advances therebetween while being milled. The milling of the grain develops heat in the grain which converts the moisture therein to steam which effects cooking of the grain. Most, if not all, of the steam thus generated is reabsorbed by the milled grain as it emerges from the apparatus. In order to enhance the cooking effect on the grain, the outer one of the conical grinding members has a heated gaseous medium supplied thereto and the mill includes an impeller for forcing the gaseous medium through the inner one of the grinding members so that both of the grinding members are heated and thereby enhance the cooking of the grain being milled in the apparatus.