Abstract: Various embodiments of a hammermill system, hammer, and methods are disclosed. A hammermill hammer comprises a metal composite comprising a plurality of inserts and a body portion disposed between each of the plurality of inserts. The composition of the plurality of inserts is different than composition of the body portion. The material of the plurality of inserts has a greater abrasion resistance than the material of the body portion and the material of the body portion has a greater impact resistance than the material of the inserts. The hammers produced have improved wear resistance and longer useful life compared to conventional hammermill hammers.

Abstract: A blow bar for inserting in a holder of a rotor of an impact crusher defines a longitudinal axis in a z-direction, a vertical axis in a y-direction, and a transverse axis in a x-direction. The blow bar includes two rectangular heads respectively arranged at upper and lower ends of the blow bar and defining there between a middle region, in which the longitudinal axis centrally determines a position of a y-z plane. Each head has side surfaces extending parallel to the y-z plane and parallel at a first spacing to define a thickness between the side surfaces. The two heads are situated offset to the y-z plane in opposite direction by a second spacing in the transverse direction, thereby forming support shoulders in a transition to the middle region. The middle region has a thickness which is not less than the first spacing of the side surfaces.

Abstract: The various embodiments disclosed and pictured illustrate a multi-connector hammer for comminuting various materials. The illustrative embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The multi-connector hammer includes a connection portion having a rod hole therein, a contact portion for delivery of energy to the material to be comminuted, and a multi-connector neck portion affixing the connection portion to the contact portion. In other embodiments, a shoulder is positioned around the periphery of the rod hole for added strength. In still other embodiments, a neck reinforcement is positioned along a portion of the neck for increased strength. A weld or plurality of welds may be affixed to various surfaces of the contact portion to aide in comminuting and/or longevity of the multi-connector hammer.

Abstract: A striking tool for crushing metal or stone materials, where the striking tool is manufactured from an iron-based material and includes a bearing section, into which a bearing opening is formed around a pivot axis and includes a striking section which is exposed to a striking load by contact with the material to be crushed, and a rotor equipped therewith for a machine to crush metal or stone materials. The striking tool improves with the ability of its bearing section to absorb the dynamic loads acting on the striking tool. The bearing opening has a support section, on whose inner circumferential surface the striking tool is mounted for its swing movement around the pivot axis and has an extension section, which is connected to the support section and the bearing opening is extended in the direction of the striking section with respect to the support section.

Abstract: The various embodiments disclosed and pictured illustrate a curved hammer for comminuting various materials. The illustrative embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The curved hammer includes a connection portion having a rod hole therein, a contact portion for delivery of energy to the material to be comminuted, and a curved neck portion affixing the connection portion to the contact portion. In other embodiments, a shoulder is positioned around the periphery of the rod hole for added strength. In still other embodiments, a neck reinforcement is positioned along a portion of the neck for increased strength. A weld or plurality of welds may be affixed to various surfaces of the contact portion to aide in comminuting and/or longevity of the curved hammer.

Abstract: An impact bar for installation in an axis-parallel impact bar mount of a rotor of an impact crusher includes front-side and backside holding regions between end faces, and longitudinal ribs projecting beyond the end faces. Each holding region is bordered by two longitudinal ribs which have a trapezoidal cross section to define a base and a topside at a distance to the base, with the base being wider than the topside. The longitudinal ribs have each an inner inclined flank and an outer flank, with the inner and outer flanks extending between the base and the topside and with the inner flank extending at a flank angle of 20° to 27° in relation to the x direction and configured such that only the inner flank is supportable in the installation position for transmission of a force into the impact bar mount at the rotor.

Abstract: A hammer assembly that will mount in a grinder/shredder/hammer mill type machine. A tool holder is milled with dovetail/angular slots along each side of the hammer tool holder, which allows milled blade to slide in to place and be securely held in position. The simple milled slot located in the middle of each blade that allows a single mounting block/bolt to securely hold each blade in position. This results in the ability to rotate and/or interchange blades. The tool holder allows single or multiple blade/hammer inserts to be installed without having to remove a hammer pin, so the tool holder stays in the machine, and the blades can be easily removed. This arrangement allows the tool holder to stay in place, and enables the simple removal of a single bolt and retention block and then flip or rotate the hammer to get additional wear surfaces or install new blades.

Abstract: A cylindrical cutting system, a bit holder assembly, and machine for milling or scarifying road surfaces are disclosed. A bit holder is attachable to a milling platform, and includes an inward facing surface for engaging a corresponding mating surface of the milling platform. The inward facing surface of the bit holder and the mating surface include aligning fastener and pin openings. A fastener and a pin are inserted within the respective openings to couple the bit holder to the milling platform. The mating surface may define a part of a recess formed in the milling platform. A wear element may be disposed at the leading side of the bit holder. Multiple platforms may be coupled together with axially extended platform fasteners.

Abstract: A material reduction system and processing tool for a material processing machine. The material reduction system comprises a tool holder fixedly mounted to a rotary drum. A leading member defines a raker surface oriented away from the operating direction at a first predefined angle. A processing tool is removably coupled to the tool holder. A leading face of the processing tool is oriented toward the operating direction at a second predefined angle. The first and second predefined angles are such that material is directed into contact with the reducing member to limit material contact with the tool body and the tool holder. An upper flange of the processing tool directly abuts the tool holder to direct material away from the tool holder. The upper flange and a lower flange define a tool recess configured to receive a projection from the tool holder to prevent rotation of the processing tool.

Abstract: A tooth shroud for a demolition tool is disclosed wherein forces produced during demolition operations may be dissipated so as to avoid excessive forces at stress points. A tooth block for a demolition tool comprises a first tooth shroud and a second tooth shroud. The first and second tooth shroud each comprising a body having a front wall and an end wall wherein a cavity is enclosed by the front wall and the end wall; an impact member extending longitudinally from the body; and a cut-out disposed on the end wall, wherein the first tooth shroud is connected to the second tooth shroud.

Abstract: The invention relates to a replaceable blade piece of a working cylinder of a screen crusher. A blade piece—has a frame portion and a blade portion, the longitudinally opposite front surfaces of which form work surfaces. The frame portion has a through hole extending in the longitudinal direction of the blade portion. A channel-like section is formed on opposite sides of the frame portion containing the hole and extends in the vertical direction of a frame portion, between the edge areas of the side with the hole. The invention further relates to a replaceable blade piece holder having a U-shaped frame portion including arm portions, through which extends a longitudinal hole of the frame portion, and a bottom portion. On the opposite surfaces of the arm portions, onto their middle area is formed a bulge, which extends in the vertical direction of the arm portion.

Abstract: A splitter is provided for mounting on the leading face of a cutting assembly to be mounted on a brush cutter. In one embodiment, the splitter is preferably mounted below the cutting portion of the tooth such that as wood is cut, the cut wood is directed onto the splitter for further cutting. The tooth is mounted to cut tangentially with respect to the rotation of the cutter, while the splitter cuts radially and outwardly with respect to the rotation of the cutter. In this manner, a cutting mechanism is provided that is capable of cutting tangentially and radially simultaneously. The flow of cut wood is directed out of from the cutting assembly, thus facilitating the removal of the cutting debris away from the tooth holder and the cutting tooth, thereby cleaning the tooth of any debris and preventing wood and other debris from getting lodged within the cutting assembly.

Abstract: The invention relates to an ejector unit, in particular for a road milling machine, having an ejector that is replaceably mounted on a carrier. In one aspect the ejector is curved in a scoop-like fashion. In another aspect the ejector is reversible upon the carrier to allow the ejector to be reversed after one wear surface is worn, thus presenting a new second wear surface.

Abstract: A mounting assembly for mounting an actuator having a base end and a piston end on an item of equipment. The mounting assembly comprises a plate that is adapted to be mounted to the item of equipment at a first location, a pin hole that is disposed on the plate and has a raised portion, and a pin that is disposed in the pin hole and has a pin diameter, a longitudinal axis, and a channel. The pin is affixed to the cap end of the actuator, the piston end of the actuator is mounted to the item of equipment at a second location, and the channel of the pin is seated on the raised portion of the pin hole. A method for mounting an actuator comprising providing a mounting assembly and moving the actuator between a retracted position and an extended position.

Abstract: An improved hammer mill hammer constructed by forming a groove in an edge of the grinding end of a hammer for receiving hard facing material and placing hard facing in the groove.

Abstract: The various embodiments disclosed and pictured illustrate a hammer for comminuting various materials. The embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The double end hammer includes a connection portion having a slot therein and two contact ends for delivery of energy to the material to be comminuted. The contact ends may be formed with a cavity therein. The contact ends may also be formed with an angle on the contact end periphery. The cavity and/or the angle on the contact end periphery may be used with hammers other than the double end hammers.

Abstract: A buffer system for a hydraulic hammer is disclosed. The buffer system includes a wear member disposed between a first component and a second component. The wear member includes a first surface. The first surface is adapted to abut an inner surface of the first component. The wear member also includes a second surface distal to the first surface. The second surface is adapted to abut an outer surface of the second component. The buffer system also includes an insert member disposed in the wear member between the first surface and the second surface thereof. The insert member provides a visual indication when a predefined thickness of the wear member between the first surface and the second surface is worn.

Abstract: A regenerated cutting blade to be mounted and used in a shearing type grinder. The cutting blade includes a fixed part and a blade tip projecting outward from this fixed part, in which the blade tip has a leading edge pointed toward the rotating direction. Side edges 110 on the lateral side outer periphery including the blade tip, the leading end edge and the side edges are regenerated and formed by build-up welding. The lateral sides are provided with slip preventive build-up welding parts 111, 112, 113 extending from the side edges 110 toward the central side of its rotation or the central direction, and the build-up welding parts are formed by three regenerating processes.

Abstract: A gyratory crusher includes a spider supported at a top shell, the spider having a pair of spider arms protected by respective arm shields. The shields are mounted and dismounted at the respective arms via a locking flange and notch and lug arrangement to avoid attachment by welding or attachment bolts.

Abstract: The invention relates to a crusher for crushing solid material, the crusher comprising a frame; at least one crusher rotor arranged rotatably to the frame and having crusher blades secured to the circumference thereof; a yielding counterblade structure arranged for cooperation with the crusher blades of the rotor for concurrently crushing and cutting said material and for yielding when encountering non-crushable material and when overloaded; and a yielding and downwardly openable set of screens below the crusher rotor, whereby the counterblade structure is linked to the frame of the set of screens and made turnable towards it with respect for the pivoting shaft in a yield situation; and the set of screens is linked to the crusher frame on the opposite side of the crusher rotor with respect to the counterblade structure and its pivoting shaft and made downwardly collapsible about the pivoting shaft of the set of screens.

Abstract: A hammer assembly for attachment to a rotor of a rotary material crusher. The hammer assembly has an adaptor for attaching to the rotor, having a base portion and a hammer mounting portion, with the base portion being attachable to the rotor at the periphery portion thereof, and a hammer for mounting on the adaptor, having at least one impact portion, for crushing material, and a mounting portion for engagement with the hammer mounting portion of the adaptor. The hammer mounting portion of the adaptor includes bearing surfaces facing a direction of impact when crushing material, and the mounting portion of the hammer includes bearing surfaces for mating with the bearing surfaces of the hammer mounting portion of the adaptor. The hammer assembly further includes a retainer rod for preventing demounting of the hammer from the adaptor. The retainer rod passes through an opening formed by a retainer rod groove in the hammer and a retainer rod groove in the adaptor which face each other.

Abstract: A tip for use on an earth working roll for mining, construction and public works machines such as crushers, surface miners, milling machines and the like includes a working end provided with side relief to reduce drag and wearing, require less power to drive the rolls, and lengthen the usable life of the tip. The working end can also have a generally flat front surface to improve the yield in a crushing or other similar operation. The tip includes a base and a wear cap releasably secured together by a retainer.

Abstract: A knife assembly for a shredder includes a base and a knife cap coupled to the base. The knife cap is configured to cut a material passed through the shredder. In addition, a brazing material is positioned between the base and the knife cap to secure the base and the knife cap together. The base and the knife cap have generally the same outer footprint.

Abstract: A hammer (5) for a beater mill used to process coal, biomass material and other materials is provided having a hammer body (11), an impeller head (13) at a first end of the hammer body (11), and a bore (15) at a second opposite end of the hammer body (11). The impeller head (13) is detachably connected to the hammer body (11) by a base plate 17. Base plate (17) has a first side with a protrusion (21) and at least one bolt (29) protruding therefrom and a second opposed planar side with a crushing member (19). Protrusion (21) and at least one bolt (29) detachably connects impeller head (13) to first end of hammer body (11).

Abstract: Various embodiments of a hammermill system, hammer, and methods are disclosed. A hammermill hammer comprises a metal composite comprising a plurality of inserts and a body portion disposed between each of the plurality of inserts. The composition of the plurality of inserts is different than composition of the body portion. The material of the plurality of inserts has a greater abrasion resistance than the material of the body portion and the material of the body portion has a greater impact resistance than the material of the inserts. The hammers produced have improved wear resistance and longer useful life compared to conventional hammermill hammers.

Abstract: The various embodiments disclosed and pictured illustrate a hammer for comminuting various materials. The embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The hammer includes a connector end having a rod hole therein, a contact end for delivery of energy to the material to be comminuted, and a neck affixing the connector end to the contact end. The neck is formed with at least one neck recess therein. In other embodiments, one or more shoulders are positioned around the periphery of the rod hole for added strength. In still other embodiments, the contact end is configured with more than one contact surface.

Abstract: A grinding tool for impinging a material includes a tool body having a top surface and a bottom surface, the tool body defining a pocket at a leading edge of the top surface and the pocket having a mounting surface. The grinding tool also includes a plurality of inserts mounted on the mounting surface of the pocket of the tool body, wherein each of the plurality of inserts includes a base mounting surface adjacent the mounting surface of the pocket of the tool body, a main cutting face generally opposite the base mounting surface, and a leading face positioned adjacent the leading edge of the top surface of the tool body. The leading face terminates in a protective base flange that is structured and arranged to substantially cover the mounting surface of the pocket of the tool body adjacent the leading edge of the tool body.

Abstract: Shredder hammers having first and second major surfaces on opposing sides, and a circumferential edge. A mounting portion includes a mounting hole that extends from the first major surface to the second major surface, and is configured to receive a hammer mounting pin for mounting in a reducing system. The circumferential edge includes a primary impact face to initially impact materials to be reduced and a wear edge to subsequently crush and shear the material against a wall of the equipment. The hammer is biased forward on the pin to admit more material to be crushed between the wear edge and the grates.

Abstract: The present invention discloses a composite impactor for impact crushers, said impactor comprising a ferrous alloy at least partially reinforced with titanium carbide according to a defined geometry, in which said reinforced portion comprises an alternating macro-microstructure of millimetric areas concentrated with micrometric globular particles of titanium carbide separated by millimetric areas essentially free of micrometric globular particles of titanium carbide, said areas concentrated with micrometric globular particles of titanium carbide forming a microstructure in which the micrometric interstices between said globular particles are also filled by said ferrous alloy.

Abstract: A wear assembly for use on a driven roll for earth-working machines and the like operations that eases replacement of the wear parts, lengthens the life of the bases, reduces the amount of throw-away material to be discarded, and has a lower manufacturing cost. The wear part overlies and protects the base to prolong the useable life of the base, lessen machine downtime, and reduce throw-away material. The use of an overlying adapter eases and speeds replacement of the wear parts to further limit downtime of the machine. The wear part is preferably a two-piece component with no machined parts for a lower manufacturing cost and easy replacement.

Abstract: A hammer mill has a lockable milling chamber and a rotor disposed in the milling chamber. The rotor has a shaft supporting plural rotor discs and plural hammer pins for receiving hammers or hammer assemblies. The hammer pins do not extend over all the segments defined by the discs.

Abstract: The invention relates to a hammer, in particular for comminuting devices, comprising a rotor and/or at least one shaft to and/or on which the hammer can be fixed. Said hammer consists of a lower body provided with a through hole which is provided to connect the hammer to the rotor and/or the shaft, and at least one cutting body which can be detachably/rigidly connected to the lower body. The invention is characterised by the fact that the cutting body consists of at least two parts.

Abstract: A hammermill, such as an imp mill 10, for pulverizing material includes a housing 16 defining a grinding chamber 14 having a grinding apparatus 12 disposed therein. The material is fed into the grinding chamber to the grinding apparatus through an inlet conduit 24, and the resulting ground material is directed from the grinding chamber through an outlet conduit 28. The grinding apparatus includes a plurality of hammer disks 32 axially spaced along a rotor 34, wherein disks 32 are disposed within the grinding chamber 14. A plurality of rows 41-46 of hammers 30 is attached to the hammer disks 32. The hammers 30 of each respective row of hammers are circumferentially spaced around the hammer disks 32, wherein each row of hammers is formed to provide generally uniform wear across each row of hammers. The uniform wear may be achieved by forming the hammers 30 of different hardness or wear resistant qualities, and/or configuring the rows of hammers with different shapes.

Abstract: Shredder hammers having first and second major surfaces on opposing sides, and a circumferential edge. The hammer includes a mounting portion and a working portion. The mounting portion defines a mounting aperture that extends from the first major surface to the second major surface, and is configured to receive a hammer mounting pin. The working portion includes at least one recess in at least one of the first and second major surfaces with opposed walls that extend away from a distal portion of the circumferential edge. The hammers are used in shredding systems for shredding material.

Abstract: The invention refers to a mallet, in particular for comminution devices with a rotor or at least one shaft, on or at which the mallet (1) can be fastened, consisting of a basic element (2) provided with a through bore hole (B), wherein the through bore hole (B) is provided for connecting the mallet (1) with the rotor or the shaft, and a cutting insert (3) that can be connected releasably/fixedly with the basic element (2) by at least one form-locking connection (V) as well as by at least one connecting means (4), the connecting means (4) exerts power (P) drawing or pressing the cutting insert (3) in the form-locking connection (V) of the basic element (2). The invention is characterized in that referring to the power (P) a power (P1) results drawing or pressing the cutting insert (3) in a sloping angle (?) with reference to an axis (Y) of the mallet (1) and a symmetry axis (A) of the connecting means (4) essentially parallel to the axis (Y) in the basic element (2).

Abstract: A beater bar for a rock impact crusher, in particular a rotary impact crusher, including a carrier which, in the region of a cutting edge, has a plurality of cutting elements made of a hard material arranged next to one another. For the purpose of simple maintenance and for improved cost-effectiveness of the beater bar, according to this invention two or more cutting elements are fastened on a cutting-element holder, and two or more cutting-element holders can be interchangeably fastened to the carrier.

Abstract: The various embodiments disclosed and pictured illustrate a hammer for comminuting various materials. The embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The double end hammer includes a connection portion having a slot therein and two contact ends for delivery of energy to the material to be comminuted. The contact ends may be formed with a cavity therein. The contact ends may also be formed with an angle on the contact end periphery. The cavity and/or the angle on the contact end periphery may be used with hammers other than the double end hammers.

Abstract: A fragmenting rotor assembly for comminuting waste wood and other fragmentable material. A hammer support is carried by a drive shaft driven in rotation about a longitudinal drive shaft axis. The hammer support projects radially relative to the drive shaft axis and includes a radially outer hammer head. A fragmenting knife is removably secured to the hammer head and has a reducing edge disposed in a radially outer cutting position. A deflecting member is carried by the drive shaft and has a radially outer end that deflects fragments away from at least a portion of the fragmenting knife. The hammer support and/or the deflecting member are carried by at least one rod of a plurality of circumferentially-spaced axially-extending rods that are carried on the drive shaft by axially-spaced rotor members.

Abstract: The replaceable insert for a hammermill hammer enables the insert to be removed and replaced by the removal and installation of a single bolt in the leading face or edge of the hammer, rather than requiring partial disassembly of the hammermill for the removal of a damaged hammer and hammer shank from its retaining rod. The insert is formed of hard and tough metal, e.g., tool steel, carbide alloy, etc., as a longitudinally and laterally symmetrical rectangular parallelepiped, the hammer shank having a cooperating relief formed therein. The symmetrical configuration allows the insert to be reversed through 180° in its installation, thereby exposing a fresh insert face after the first face has been worn or damaged. A pair of indexing pins extends from the insert, the pins fitting closely within cooperating receptacles in the hammer shank relief to secure the insert precisely within the relief.

Abstract: A beater for comminution devices with a rotor on or at which the beater can be fastened, including a lower body which is designed as a shaft end for connecting the beater with the rotor, and at least one cutting body. At least one cutting body is connected with the lower body in a releasable/fixed manner.

Abstract: The invention provides a particulate size reduction system including a grinding chamber, a center shaft defining an axis of rotation and configured for rotational motion within the grinding chamber, a wheel assembly mounted on the center shaft and at least one swing hammer mounted on the wheel assembly. The at least one swing hammer preferably includes a base portion having a first end having a mounting portion for attachment to a wheel assembly of a material treatment system, a second end, an inboard portion proximate the mounting and an outboard portion proximate the second end. The swing hammer also preferably includes a wear pad disposed on the base portion that preferably includes an interrupted surface to improve wear resistance of the swing hammer.

Abstract: A plurality of chipper inserts that may be installed on a hammermill rotor in place of the hammer inserts to selectively convert the rotor to a chipper. The chipper inserts include drum surfaces that cooperatively define a chipper drum. The chipper inserts may include cutter inserts that have a cutter disposed in a cutter pocket. The chipper drum may be a generally continuous cylindrical interrupted essentially only by the cutter pockets. The cutters and cutter pockets may be positioned in essentially any desired pattern around the drum. The chipper inserts may include a left cutter insert, a center cutter insert, a right cutter insert and three different size spacer inserts. The different types of cutter inserts and spacer inserts may be installed about the rotor with at least one left cutter insert mounted on the left end of the chipper drum and at least one right cutter insert mounted on the right end of the chipper drum.

Abstract: In one aspect of the invention, a cone crusher has at least one crushing surface disposed on either a cone and/or an inverted bowl of the crusher. The crushing surface has at least one insert having an impact head with a stem protruding from a base end of the head. The stem has a smaller cross sectional thickness than the head.

Abstract: In one aspect of the invention, a rotary impact mill has a milling chamber defined by a housing with an inlet, an outlet, and at least one wall. A plurality of impact hammers located within the milling chamber are fastened to and longitudinally disposed along a rotor assembly that is connected to a rotary driving mechanism. At least one of the impact hammers has a plurality of inserts arranged adjacent one another in a row and attached to a body of the hammer, wherein a first end of at least one insert is complementary to a second end of an adjacent insert.

Abstract: An improved free swinging hammer mill hammer design is disclosed and described for comminution of materials such as grain and refuse. The hammer design of the present art is adaptable to most hammer mill or grinders having free swinging systems. The improved hammermill hammer may incorporate multiple comminution edges for increased comminuting efficiencies. The design as disclosed and claimed may be forged to increase the strength of the hammer. A rod hole shoulder surrounding a portion of the rod hole adjacent the neck may be reduced in the radial dimension. The shape of the hammer body may be varied, as disclosed and claimed, to further improve hammer strength, or reduce or maintain the weight of the hammer while increasing the amount of force delivered to the material to be comminuted.

Abstract: An improved free swinging hammer mill hammer design is disclosed and described for comminution of materials such as grain and refuse. The hammer design of the present art is adaptable to most hammer mill or grinders having free swinging systems. The improved hammermill hammer may incorporate multiple comminution edges for increased comminution efficiencies. The design as disclosed and claimed may be forged to increase the strength of the hammer. A rod hole shoulder surrounding a portion of the rod hole adjacent the neck may be reduced in the radial dimension. The shape of the hammer body may be varied, as disclosed and claimed, to further improve hammer strength, or reduce or maintain the weight of the hammer while increasing the amount of force delivered to the material to be comminuted.

Abstract: A hammer for a hammermill includes an elongated pin hole and a pin-hole insert that allows the hammer to be mounted in a first position and a second position on a rotor of a hammermill to prolong the useful life of the hammer. The insert is installed in the pin hole using corresponding mating features. A hammer assembly and method for prolonging the life of hammers in a hammermill are also described.

Abstract: The invention provides a particulate size reduction system including a grinding chamber, a center shaft defining an axis of rotation and configured for rotational motion within the grinding chamber, a wheel assembly mounted on the center shaft and at least one swing hammer mounted on the wheel assembly. The at least one swing hammer preferably includes a base portion having a first end having a mounting portion for attachment to a wheel assembly of a material treatment system, a second end, an inboard portion proximate the mounting and an outboard portion proximate the second end. The swing hammer also preferably includes a wear pad disposed on the base portion that preferably includes an interrupted surface to improve wear resistance of the swing hammer.

Abstract: A wear plate assembly includes a body portion and an abutment flange extending from a radially outer circumferential edge of the body portion and substantially normal thereto. The abutment flange is cooperatively configured with respect to another abutment flange of a respective adjacent wear plate that interengages with the wear plate such that a convoluted edge of the another abutment flange of the respective adjacent wear plate intermeshes with a respective convoluted edge of the abutment flange of the wear plate. At least one polygonal recess and a corresponding abutment ramp are substantially aligned therewith at a same latitude on the body portion, the recess further includes a through hole extending through the wear plate. A first clip configured is partially received in the polygonal recess, the clip having a plurality of exposed impact surface faces.

Abstract: A beater for a rotary shredder comprises an oblong base body with a pivot bearing adapted for pivotal connection of the beater to a rotor. A cutting head is formed with protruding cutting edges on opposite ends supported by the base body via the support surface. Complementary interlocking structures are provided by the support surface on the support surface and the cutting head. A releasable connection passes through the complementary structures connecting the base body with the cutting head. The complementary structures are provided by a recess formed in the support surface of the base body and a thereto complementary projection of the cutting head.