Abstract: A shredding apparatus including a housing or hopper and a shredding assembly positioned within the housing or hopper. The shredding assembly including a cutter bar assembly and a rotary blade assembly. Each of the assemblies including a number of identical cutter blades which are interchangeable with each other and are individually reversible. The cutter bar assembly also including a cutter bar positioned in abutting engagement with one end of each of the cutter blades mounted on the cutter bar assembly. The cutter bar including cutting edges on each side so it can be reversed with respect to the cutter blades. The cutter blades on the rotary cutter bar assembly are arranged to shear waste material at a downwardly and outwardly inclined angle so that the cutter blade acts to draw or pull waste material into the shredder assembly. The hopper or housing being provided with an easy access door on the front wall which can be pivoted outwardly from the hopper.

Abstract: Reduction structure including a revolving rotor and stationary structure. The revolving rotor is notched to provide a series of cutter sockets that individually receive cutters, preferably hardened steel cutters. The cutters are arranged in their sockets such that a majority of the length thereof is disposed within each socket; thereby, bolt attachment means may be reduced in number and can conceivably be one in number per cutter. The ends of the shaft are preferably turned down for bearing support and coupling to adjacent prime mover structure. The hopper, within which the rotor as above-described is mounted, preferably includes an anti-rotation member in the form of an elongate bar having one or more declining flanges, these flanges serving to preclude counter-rotation of any element such as logs as may be introduced into such hopper.

Abstract: A shredder comprising a rotor and stationary structure. The rotor includes a shaft provided with a series of grooves and split blades mounted within said grooves, this by attachment means penetrating the shaft. The fixed structure forms an anvil or reaction structure having a series of independently removable, supported, upright transverse support blocks having hardened metal segments provided with upper cutting or shearing edges. The anvil structure includes an elongate cutter bar forming, with the cutting edges of said segments, a U-shape groove through which the individual blades pass. All of the hardened-metal, and preferably tempered steel cutting segments are completely supported by the fixed support structure and are usually independently and individually replaceable as may be needed through the operation of the machine. Ramp-providing rib structures are provided and are likewise split construction for easy removal from the interior hopper area of the shredder.

Abstract: A shearing or shredding construction incorporating a revolvable shaft that is grooved for the reception of a series of mutually-spaced blades, and wherein keys accurately and positively position such blades, such structure being provided with close tolerance bearings for severely restricting if not eliminating a shifting of the rotor shaft along its axis.

Abstract: Shearing structure for materials' reduction equipment wherein a scissor-type shearing function is preserved, as between the blades and cutter bars used, from an initial shearing position throughout passage of the blade tip toward, at, and past the shearing edge of associated anvil or cutter bar structure. Each blade tip is provided with an apex, the same mating with an apex recess in the cutter bar structure which defines an outermost extremity of the blade travel path through such cutter bar structure.

Abstract: A waste mangler system, optionally provided with classification means, for processing garbage, municipal waste, and the like whereby to mangle or break up compacted garbage and other materials, break open bags and bales, and otherwise treat the refuse for a flailing-type reduction. The machine is vertically oriented and includes a rotor having rapidly revolving cross-arms, mounted to a central shaft, which are provided with rigid impact blades and flail elements. The impact blades include rearwardly tapered leading edges so that debris may slide outwardly thereon under the action of centrifugal force to approach the area of reduction proximate the flail elements used. The material descending through the drum of the machinery is deposited down to suitable conveyer means that may be coupled to air classification or other means for material separation and further processing.

Abstract: Structure for preparing heterogeneous refuse material in a manner conducive to relatively inexpensive and direct, further processing. A principal portion of the structure includes a revolving chamber having a central fixed shaft provided with an auger end. A fixed ring portion cooperates with such auger end and is disposed in proximity with the revolving chamber such that the auger may force-feed the chamber with incoming refuse. Impact or mauling-arm means are provided within the revolving chamber for effectively mauling the material passing therethrough, as by gravity feed, so that bundles of garbage tend to be broken-up. In a preferred form of the invention conveyor means are provided for separating out ferrous metals and air-classifying the remaining refuse for further processing.

Abstract: Cutting or shearing structure wherein cutter or shearing blades are revolvably mounted yet pinned to hubs keyed to a central shaft. The shaft of hub structure is constructed for elimination of broken shear pin points. The shear pins themselves are disposed transversely relative to the shaft and are so positioned as to prevent lateral play of the blade ends as these pass through the spaces between operatively associated cutter blades.