Abstract: The present invention is directed to, among other things, a stationary peg for securing within a grinding chamber of a coal pulverizer, wherein the stationary peg includes a base portion having a front surface with a groove defined therein and an elongate portion extending from the front surface of the base portion. A layer of a protective material is disposed on the upper surface of the elongate portion and at least a portion of the layer extends into the groove defined in the front surface of the base portion.

Abstract: A holding member for holding a horizontal wear plate in position on a rotor for a vertical shaft impact crusher. The holding member includes a holding part for holding the wear plate and a fixing mechanism for releasably fixing the holding member to a vertical wall segment of the rotor such that the wear plate bears against a first side of the wall segment.

Abstract: A comminuting striker assembly for mounting on a rotor of a comminuting apparatus comprising: a striker having first and second opposed faces, the first face defining at least one cutting edge, and a striker retainer, the striker and striker retainer defining cooperating primary support surfaces and cooperating alignment components.

Abstract: A rotor of a vertical shaft impact crusher includes a vertical rotor wall segment having a first wall portion being substantially tangential in relation to the rotor and a second wall portion being angled in relation to the first wall portion. A tip holder for mounting at an outflow opening of such a rotor includes a holding part for holding a wear tip. A fastening mechanism is attached to the holding part. The fastening mechanism is adapted to extend along the first wall portion and through the second wall portion from one side thereof. A fixing mechanism is detachably fixable to the fastening mechanism at the other side of the second wall portion.

Abstract: A mulcher apparatus includes a tractor and a mulcher unit provided to the tractor. The mulcher unit includes a tooth assembly with a holder and a cutter element with a cooperating notch portion and cross bar arrangement. The notch portion can be retrofit to existing holder arrangements. The cutter element may include various features, to enhance cutting efficiency. For example, the cutter elements may include a double-ended structure, angle tab portions at each corner portion, carbide coatings, a pair of tip portions at each end with a space therebetween, and/or a generally H-shaped configuration.

Abstract: A tumbler for tumbling concrete products comprises a rotatable cylindrical drum having an input end that is slightly elevated relative to an output end. Tire retread strips are placed side-by-side on the radially inner surface of the drum and extend along its length. Clamps having lateral arms extending on either side are engaged with lateral tread grooves on the strips. The clamps are bolted to the drum between adjacent strips thereby securing the strips to the radially inner surface of the drum.

Abstract: A metal casting molded body comprising at least one effective surface for machining or processing a material and formed from a compound material, wherein said compound material comprises at least one porous hard material body in a casting matrix made of a metallic casting material, said casting material being seeped into said hard material body.

Abstract: A segmented wear resistant band for protecting a surface subject to wear in a crusher is comprised of segments or concaves. The segments of the wear resistant band can be separated from each other by portions of reduced thickness. The portions of reduced thickness can be cut after the installation to the surface. The segments can also include a flange for reception in a recess between a spider and the top shell of a gyratory crusher.

Abstract: The system for measuring wear in a grinding mill has at least one bolt passing through the shell and a wear plate. The bolt has an elongated oblong-shaped bolt head extending through the wear plate, flush with a surface of the wear plate. The bolt head is exposed to a same abrasion as the wear plate. The bolt has a groove there along and a plurality of wire loops embedded in that groove. Each wire loop extends to a distinct point along the bolt head, such as to form a ruler along the bolt head. A mobile transmitter-receiver is mounted to the stem of the bolt and is connected to the wire loops. The mobile transmitter-receiver has electronic circuitry therein for detecting broken loop conditions and for transmitting these conditions to a remote receiver where the conditions are related to degrees of wear on the wear plate.

Abstract: The present invention is directed to, among other things, a grinding and impeller clip for attaching to a wheel assembly mounted for rotational motion within a grinding chamber of a coal pulverizer, wherein the clip has an arcuate cross sectional profile and a protective layer on its upper surface.

Abstract: A striking tool for comminuting materials, particularly waste wood, having a shank and a chisel head, wherein a cutting insert is fastened on the chisel head. For an extended service life, along with an improved comminuting output, the cutting insert has at least one first and at least one second cutting element and the first and second cutting elements are arranged one behind the other in the cutting direction.

Abstract: A deflector disposed immediately above and outboard of a rotating vane wheel in a pulverizer/classifier is protected from wear and abrasion by side-by-side abutting high-hardness wear plates having an alloy content of approximately 15 percent chromium and three percent molybdenum by weight. The abutting edge surfaces of the wear plates are mitered. For pulverizers/classifiers having discontinuous deflectors, end plates are disposed over the end surfaces of the deflector segments and are serrated. Inside threaded fasteners are used to hold the wear plates in place over the lower surface of the deflector.

Abstract: A cutter wheel for tire shearing having a unitary annular core with radially inward shoulders on both sides of the radially outward central portion of the core. Pie-piece shaped cutter segments are mounted atop the shoulders of each core with each cutter segment having a base and a blade atop the base, with cutter segments overlapping in a serrated fashion, beyond the central portion of the core. The central portion of the core is smooth, serving as a spacer between adjacent cutter segments. Each blade is split into two side-by-side blade segments, with the laterally outward blade segment experiencing greatest wear. The laterally inward blade segment mounted to a pie-piece shaped cutter segment by radial bolts, while the laterally outward blade segment is fastened to the laterally inward blade segment by axial bolts.

Abstract: A rotor assembly operable with anvil mechanism for comminuting waste wood and other fragmentable material has a rotating drive shaft with a series of rotors fixed in axially spaced relation thereon. A series of radially projecting hammers mechanisms are situated along the axis of the shaft and powered by the shaft. Fragmenting knives are removably secured to the leading outer portions of the hammer mechanisms. The hammer mechanisms include sidewisely reversible hammer legs having portions received by the rotors sidewisely contiguously.

Abstract: The present invention is particularly, but not exclusively, useful for reducing wear of component parts of impact-type rock-crushing machines caused by earth aggregate flows during operation of impact crushers. The present invention includes a central feed body and impeller shoe that has hard material insert bars fixed therein to reduce wear. The exposed top surface of the central feed body and front face of the impeller shoe are impregnated with a plurality of cemented carbide insert bars. The cemented carbide insert bars form an upper composite matrix that helps to reduce wear and the premature wash out of the hard material insert bars integrally cast within the central feed body.

Abstract: A wear plate 52 for mounting in a wear protecting disposition on a rotor disc 50 of a pulverizer 38 includes a body portion 64 having a radially outer circumferential edge 74 and a radially inner circumferential edge 76, an abutment shoulder 72 along the one angular edge of the wear plate 52, an underlap flange 78 on the one angular edge of the body portion 64, and an overlap rim 80 on the other angular edge of the body portion 64. The underlap flange 78 is cooperatively configured with respect to an overlap rim 80 of a respective adjacent wear plate 52 that is in interengagement with the wear plate 52 such that the overlap rim 80 of the respective adjacent wear plate 52 at least partially overlaps the underlap flange 78 of the wear plate 52.

Abstract: A grinder tooth for use with a rotatable breaker ring part of a grinder, the breaker ring has a breaker head protruding radially from the ring outer peripheral surface for carrying the grinder tooth. The grinder tooth includes a blade holder, a shank extending from the blade holder and a blade releasably attached to the blade holder. The blade defines at least two grinding edges. The blade and holder are configured and sized so that the blade and holder peripheral surfaces are substantially in register with each other when the blade is attached to the holder. The blade and the holder are also configured and sized so that either one of the at least two grinding edges may be positioned radially outwardly by rotating the grinder tooth about the shank longitudinal axis allowing either one of the at least two grinding edges to be selectively used for grinding.

Abstract: The invention relates to a grinding element, which comprises a substantially planar fastening frame, and where two or more grinding segments made of grinding ceramic material are fastened to the outer surface of the frame by means of bonding agent. The fastening frame preferably comprises at least one fastening hole, and a fastening bolt is supplied through the hole to fasten the grinding element to the frame of the grinder stone. The invention further relates to a grinder stone, where a grinding surface is formed by arranging a required number of grinding elements according to the invention on the outer circumference of the stone's frame.

Abstract: A jaw crusher unit for use in crushing stone and other crushable material has a fixed jaw and a movable jaw which define a crushing zone therebetween. A drive mechanism coupled with the movable jaw operates to rock the movable jaw to and fro to crush material in the crushing zone. A link mechanism sets a space between the lower end of the movable jaw and the fixed jaw and thereby controls the discharge of crushed material from the lower end of the crushing zone. A removable wear plate is mounted on a mounting face of at least one of the jaws by a wedge arrangement coupled with a power-operated linear actuator. The linear actuator moves the wear place into and out of engagement with the mounting face to facilitate replacement of the wear plate.

Abstract: A beater bar capable of being acted upon on one side for impactor rotors and insertable form-fittedly into circumferential slots of the rotors has a bend with an elongate cross-section, a bearing surface heldable counter to a centrifugal force of the rotating rotors against a bearing surface of the rotors, a supporting surface engageable with an undercut in the circumferential slot; a piece which holds the beater bar in engagement with the undercut in an circumferential slot, the bend being arcuate, and a center of rotation of a smaller radius of an arc of the bearing surfaces being at a considerable distance from a center of rotation of a larger radius of an arc of the supporting surface, so that the two centers of rotation run in a line extending approximately parallel to a beating surface, the bearing surfaces being at an obtuse angle to one another in a prolongation of the smaller arc.

Abstract: A rotary shredder for shredding various materials including fibrous materials, comprising at least one rotor that carries a plurality of V-cutters axially spaced apart along the rotor to mesh with recesses between adjacent teeth of a counter knife. The rotor also carries a plurality of flat cutters. Each flat cutter has a cutting edge that is parallel to the axis of the rotor. The flat cutters are aligned in the axial direction with the teeth of the counter knife, and hence are axially positioned between axially adjacent V-cutters. The flat cutters thus are positioned to work in conjunction with the counter knife to cut material that accumulates between adjacent V-cutters.

Abstract: A tool body is cold formed by inserting a blank into a die which defines a portion of the outer surface of the tool body after which a punch applies an impact to the blank causing the outer surface of the blank to conform to the contour of the die. The completed tool has an elongate hub with a cylindrical forward portion having a diameter sized to rotatably fit within the bore of a tool holder and a rearward portion with a diameter a little less than the that of the forward portion. The smaller diameter rearward portion facilitates the insertion and alignment of the tool in the tool holder.

Abstract: Rotor for a paper stock processing machine, an anti-wear element for protecting a leading front surface of a rotor blade, and a paper stock processing apparatus. The rotor includes at least one rotor blade having a leading front surface to be protected, and an anti-wear element comprising a base body and at least one wear-resistant surface. The anti-wear element is coupled to the leading front surface. The anti-wear element includes a base body with a back side, and at least one wear-resistant working surface. The back side is formed to correspond to a shape of, and to be coupled to, the leading front edge. The apparatus includes a tank, a screen, and a rotor rotatably coupled adjacent the screen. The rotor includes at least one rotor blade having a leading front surface, relative to a rotational direction of the rotor, and an anti-wear element coupled to the leading front edge. The anti-wear element includes a base body and a wear-resistant working surface.

Abstract: A jaw crusher having one or more improved elliptical jaw members is disclosed. The jaw crusher includes a frame, a stationary jaw, and a moveable jaw. The stationary jaw is mounted to the frame and includes a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge. The moveable jaw, which is shiftably mounted to the frame and is moveable toward and away from the stationary jaw, includes a top edge, a bottom edge, and an interconnecting face extending between the top edge and the bottom edge. The face of at least one of the stationary jaw and the moveable jaw includes an elliptical profile.

Abstract: A shearbar comprises an elongated mild steel body 10 having a top surface 14 covered with a layer of hardfacing material 16 along at least one longitudinal edge 18 to act as a counter knife to a rotary cutter. To resist the development of a wear gully on the vertical side of the body 10 below the cutting edge of the hardfacing material 16 the body has a region 22, having a hardness intermediate that of the steel body and the hardfacing layer, extending along and immediately below the longitudinal edge 18 of the hardfacing layer. In one embodiment the region is an inlay of tool steel. In another embodiment the region is formed by heat-hardening the corners of the body 10 itself.

Abstract: A wood fragmenting rotor assembly has a drive shaft driving a series of radially projecting hammers. Replaceable fragmenting knives are removably secured to the leading portions of said hammers and have generally axially extending fragmenting edges. An impaling tool having a generally conical leading end is carried on the hammers radially inwardly of the edges to project a generally tangentially predetermined distance forwardly and provide an initial rigid work contacting portion ahead of and cooperating with the knife edges.

Abstract: A system which comprises a micronizing milling machine used for the grinding of highly abrasive materials, wherein the micronizing milling machine includes a grinding chamber having a hub and a plurality of beater bars disposed around the hub, wherein the hub rotates, thereby causing the beater bars to grind highly abrasive materials that are fed into the grinding chamber by being poured over a central cone disposed over the hub, thereby directing the highly abrasive material away from the hub, wherein the micronizing milling machine is operated at high speeds by using a load balancer to reduce vibration and prevent excessive wear of the moving components, and wherein the micronizing milling machine obtains a high percentage of material at a desired particle size.

Abstract: The invention concerns a knife seat arrangement on a cutting shaft of a shredding machine, having a knife seat groove and cutting tool arranged therein, whereby the cutting tool, fastened so as to be detachable in the knife seat groove, adjoins a flat back surface on a flat front surface of a stop element and the stop element adjoins a corresponding end surface of the knife seat groove with a semicylindrical rear wall, whereby the stop element has a protrusion, situated in a form-locking manner in a corresponding recess of the groove bottom and directed inward, in the area of the groove bottom of the knife seat groove, said protrusion partially gripping under the cutting tool and adjoining it, so that the stop element is supported radially in the groove by the cutting tool.

Abstract: In order to create a surface armoring suitable for the autogenous wear protection with application of grid armoring technology that exhibits a long service life capability due to high wear-resistance and compressive strength and that can nonetheless be manufactured and repaired relatively simply and cost-beneficially overall, particularly for the grinding rollers of high-pressure roller mills for the pressure comminution of granular material, it is inventively proposed that depressions spaced from one another be formed in the outside surface of the roller jacket and that prefabricated, highly wear-resistant hard bodies be pressed into the depressions, namely onto an adhesive compound that fills out the space provided with cavities between the bottom of the depressions and the underside of the hard bodies that have been fitted in.

Abstract: A replaceable raker assembly for a processing tool of a waste processing machine includes a tool holder for attachment to a rotor assembly of the waste processing machine. The replaceable raker assembly also includes a raker removably attached to the tool holder to rake reduced waste material.

Abstract: A face plate is provided for releasable attachment between a hammer and a hammer tip of a size reducing machine. The face plate provides a buffer between the hammer and the hammer tip. The hammer has a body with a forward facing hammer face that aligns with the back of the face plate. The front of the face plate aligns with the back of the hammer tip. The hammer, hammer tip, and face plate contain aligned bolt holes for receipt of a securement bolt that releasably secures the hammer, face plate, and hammer tip. The face plate includes a center section raised above opposing ledges designed for mated alignment with a recessed center section of the back of the hammer tip.

Abstract: A shearbar comprises an elongated mild steel body 10 having a top surface 14 covered with a layer of hardfacing material 16 along at least one longitudinal edge 18 to act as a counter knife to a rotary cutter. To resist the development of a wear gully on the vertical side of the body 10 below the cutting edge of the hardfacing material 16 the body has a region 22, having a hardness intermediate that of the steel body and the hardfacing layer, extending along and immediately below the longitudinal edge 18 of the hardfacing layer. In one embodiment the region is an inlay of tool steel. In another embodiment the region is formed by heat-hardening the corners of the body 10 itself.

Abstract: A segmented wear resistant band for protecting a surface subject to wear in a crusher is comprised of segments or concaves. The segments of the wear resistant band can be separated from each other by portions of reduced thickness. The portions of reduced thickness can be cut after the installation to the surface. The segments can also include a flange for reception in a recess between a spider and the top shell of a gyratory crusher.

Abstract: The invention comprises a rotor and hammer assembly comprising a drive shaft allowing for rotating the rotor and hammer assembly. End plates are secured to the drive shaft, and a rotor casing is secured to the end plates. The rotor casing has an outside surface, to which a hammer is removably secured. The outer surface of the rotor casing includes slots, having a first and second slot section with a raised center portion therebetween. The hammer has a substantially flat base with a centrally located notch, such that the hammer base and the slot matingly align. The hammer is further secured to the outer surface of the rotor casing with threaded bolts. The hammer includes a front face with a raised center section and recessed comers that matingly align with the hammer tip, and is further secured with threaded bolt and nut.

Abstract: A mechanism for disintegrating breakable materials, such as wood, pipes, bricks, etc. includes a rotary drum having striker bars mounted thereon which disintegrate the breakable materials. Each striker bar has a notched cutting edge formed by a row of carbide tips sintered to an edge of a steel body. The cutting edge can be of serrated shape and/or scallop-shape.

Abstract: A hammer comprising a hammer body. The hammer body comprises a rotor forming portion with a trailing and a leading edge and is capable of securement to a rotor, a tip support section capable of extending into a debris path, and a production pocket extending from the leading edge of the rotor portion also capable of extending into the debris path. The hammer also comprises a hammer tip secured to the tip section of the hammer body and at least partially shielded from the debris path by the production pocket of the hammer body.

Abstract: The invention relates to a rotor (1) for a reducing machine. According to the invention, the protective caps (6.1) covering the outer plates (3.1) of the rotor (1) are decoupled from the forces of the hammer axles (5) and from the forces exerted directly on the outer protective caps (6.1) by the hammers. The outer protective caps (6.1) which are exposed to the lateral forces of the hammers (4) encompass the outer edge of each of the plates (3.1) with a web (6.2) and encompass each of the inner steps (3.2) of the plate (3.1) with a projection (6.5) in the shape of a ring segment. At the same time, these outer protective caps (3.1) are mounted on the plate (3.1) with a positive fit by means of a connecting element (9) such as a hexagon socket screw. The outer protective caps (3.1) which are adjacent to the inner protective caps (6) are fixed to the outer plate (3.1) with a non-positive fit, also by means of connecting elements (9) such as hexagon socket screws (3.1).

Abstract: A liner assembly for the discharge end of an ore comminuting mill is disclosed. The discharge end is defined by an end wall having a plurality of bolt holes formed therethrough in a predetermined pattern for attaching the liner segments to the inner surface of the end wall. Each liner segment is formed with a plurality of bolt holes capable of being aligned with the bolt holes in the end wall. A locator pin projecting from the mounting surface of the liner segment is sized and configured to project into one of the end wall bolt holes, and it is positioned relative to the bolt holes in the liner segment so that upon such insertion the bolt holes of the liner segment automatically align with those of the end wall.

Abstract: Aa wearing element for a comminuting machine whose rotating knife head includes a support disc, a support ring arranged coaxially to the support disc and knife carriers which are distributed uniformly over the-circumference and are arranged axially between the support disc and the support ring. The wearing element is composed of a plate having a certain thickness and the shape of a ring sector. The plate covers the inner periphery of the outer side of the support ring and has in the area of the gap between two knife carriers an inclined surface extending over the thickness of the wearing element toward the support ring. A wearing lip for protecting the support ring is arranged so as to extend or elongate the inclined surface portion.

Abstract: The present invention is in the field of grinders and pulverizers. More specifically, the present invention provides grinders that reduce the size of plastic and other polymeric particles through circular shaped grinding rings. The present invention further provides an apparatus that reduces the time required replacing worn blade segments and, increases grinding or pulverizing efficiency. With the present invention, when the blade segments wear, an adapter ring is unbolted from a drive ring, and once removed, individual blade segments fitted onto the adapter ring slide out of the adapter ring for replacement or sharpening, without the need to unbolt individual blade segments. In the preferred embodiment, the present invention comprises a dovetail type fitting wherein, the male section of the dovetail fitting is connected to the blade segment and the female section of the dovetail fitting is connected to the adapter ring.

Abstract: It is an object of the present invention to provide a layout of a crushing-breaking apparatus capable of achieving a full-automated factory, improving the efficiency in operation and ensuring the safety. The layer comprises a crushing-breaking apparatus for crushing and breaking sprues, weirs, runners of casting products and useless casting products, the apparatus being arranged at a predetermined position in the factory, a feeding device sequentially supplying the sprues, weirs, runners of casting products and the useless casting products to the apparatus, and a discharging device sequentially conveying recyclable casting products crushed and broken by the apparatus. The layout is characterized in that the feeding device, the apparatus, and the discharging device are arranged adjacent to one another so as to carry out a series of procedures.

Abstract: A hammer tip is provided with a centrally located bolt hole for receipt of at least one bolt for releasable securement to a hammer. The hammer tip includes a front face having a working edge, and a back with two opposing shoulder sections with a recessed section therebetween. The hammer includes a support shoulder for receipt of the bottom of the hammer tip. Together, the shoulder sections, the recess formed between, and the support shoulder create a saddle-back for releasable integration with the hammer.

Abstract: A rock crusher such as a cone or jaw crusher incorporates hardened tapered inserts in the manganese or other wear liner of at least one of its crushing elements. The inserts extend outwardly from the crushing surface of the crushing element towards the facing crushing surface so as, in use, to act as pick axes that shatter rock primarily by impact rather than pulverizing the rock by compression. The inserts are fixed in a heat treated manganese wear liner either by bonding or by press-fitting. The inserts substantially improve the life of the wear liner and, unexpectedly, 1) produce product of a highly uniform gradation in the desired ranges, 2) consistently produce product with a very high cubicity, 3) dramatically reduce the crusher's power requirements, and 4) significantly increase the crusher's capacity.

Abstract: A slow speed, high torque shear technology is disclosed having optional configurations and attachments for its construction and methods for reconfiguring existing shears to improve performance, and maintenance economics. A method is provided for the readily replacement of individual cutters and tooth modules, reconfiguration of cutter and tooth assemblies in a mix and match manner, in combination with matching anvils having replacement cutting elements with multiple cutting faces. Alternative embodiments are provided illustrating methods of configuration of various types of cutting elements and material feed systems. Methods for converting a rough cut shear to a fine particle shear and then to a granulator as well as a method for rejecting unprocessable material is also disclosed.

Abstract: An agricultural mixer auger cutting blade for providing a durable cutting blade with improved impact and wear resistance. The agricultural mixer auger cutting blade includes a plate having a leading edge, and a back edge. The leading edge of the plate has a plurality of spaced apart cutouts therein forming a row of alternating seats and extents extending along the leading edge of the plate. A plurality of cutting teeth are provided each having an arcuate front cutting edge and a back edge. Each of the seats receives therein a corresponding associated cutting tooth therein such that the front cutting edge of each cutting tooth faces in an outwardly direction from the leading edge of the plate. Each of the cutting teeth is coupled to the plate in the associated seat.

Abstract: A segmented liner assembly and liner segment fastening system is disclosed for the rotatable shell of an ore grinding machine, the shell having a plurality of mounting bores formed therethrough. The liner assembly consists of a plurality of liner segments each of which has one mounting bore that extends into the body of the segment from its mounting surface and a mounting recess having a transverse size greater than that of the mounting bore which extends from the mounting bore to the grinding surface. A threaded member extends through a mounting bore of the shell and an aligned mounting bore of the segment into the recess of the segment and externally of the shell. The threaded member is screwed into a nut that is seated at the base of the mounting recess. In a first embodiment, the threaded member has an integrally formed wrenching head enabling the threaded member to be rotated and screwed into the nut, thus drawing the liner segment tightly against the inner surface of the shell.

Abstract: A rotor assembly for use with size reducing machines having a drive motor comprising a central shaft with a drive end for securement to the drive motor and an opposing outboard end. The rotor assembly also comprises a webbing engaged with the central shaft for supporting the rotor assembly, a rotor casing substantially seals the webbing, and a plurality of sockets secure to a plurality of casing throughbores. The webbing comprises a drive end plate secured to the central shaft with a bushing, an outboard end plate secured to the central shaft with a bushing, and a plurality of web socket supports aligned in two transversely aligned rows. The web socket plates each comprise two socket receiver channels for alignment with the sockets. Finally, a plurality of hammers releasably secure to the plurality of sockets.

Abstract: A mixer for mixing and processing materials comprises a mixing chamber with a mixing space therein, an elongated rotatable mixing shaft extending through the mixing space, and a drive apparatus for rotating the shaft. At least one mixing element is coupled to the elongated shaft for being rotated to mix material. A chopper assembly comprises a chopper shaft and at least one chopper blade coupled to the shaft to be rotated thereby for chopping material being mixed in the mixing space. The chopper blade comprises an elongated blade body with at least one cutting edge, and an edge plate is formed of a wear resistant material and mounted to the cutting edge of the chopper blade to overlie the cutting edge, the edge plate being wider than the cutting edge to prevent premature wear of the cutting edge.

Abstract: On a vertical shaft impact crusher, a table assembly having a reinforcing ring is disclosed. The vertical shaft impact crusher for crushing aggregate material includes a frame, with the table assembly being mountable to the frame for rotation about a vertical axis. The crusher includes a housing defining an impact surface spaced about an interior of the housing and surrounding the table assembly. The table assembly comprises a top surface, a bottom surface, and a peripheral edge. The top surface includes a central portion defining an aggregate landing surface, with the central portion being adapted to permit outward migration of the aggregate material in response to rotation of the table assembly. A plurality of shoe assemblies are mounted to the top surface adjacent to and spaced along the peripheral edge, with each shoe assembly being adapted to cause the outwardly migrating aggregate material to be thrown against the housing impact surface in response to rotation of the table assembly.

Abstract: In a grain milling machine, a milling chamber 25 is defined by a gap between a cylindrical body 24 and a rotating body 23, and grinding plates 27 and 28 are arranged on both facing surfaces of the milling chamber 25. On the surface of at least one of the grinding plates 27 and 28, polyhedral hard diamond abrasive grains are deposited. The grinding plate 27 provided on the side of the cylindrical body 24 is fixed, and the grinding plate 28 provided on the side of the rotating body 24 moves with respect to the grinding plate 27, so that the surfaces of grains fed into the milling chamber 25 are ground by the grinding function applied between the grinding plates 27 and 28. Thus, it is possible to maintain sufficient grinding force and to carry out efficient and high-quality grain milling without the need of any complicated maintenance of the machine.