Abstract: A hammermill having a housing, a rotor assembly, a plurality of hammers, and a attrition plate assembly is provided to reduce oversized particulate material to a desired size. The housing has a sidewall that extends between an inlet end and an discharge end which defines an enclosed work space. The rotor assembly is disposed within the housing for rotation about a longitudinal axis of the housing. The plurality of hammers is coupled to the rotor assembly and is disposed within the enclosed work space. The attrition plate assembly has a generally circular configuration and is removably secured to the sidewall within the enclosed work space of the housing.

Abstract: The invention relates to a chipper knife for chippers of the type comprising a tool (12) which is rotatable on an axis of rotation and is in the form of, for example a drum, disc or truncated conical body, which supports a plurality of such chipper knives. The chipper knife comprises at least one cutting edge (1) which is formed between a flank (2, 2?) and a chip guiding surface (4, 4?), and two opposite main surfaces (3, 3?) which are adapted to abut against and be retained on the opposite seats (14, 15) of a holder (9, 10) on the tool. At least one main surface (3, 3?) of the chipper knife which is located on a wood side of the chipper knife comprises a cross-sectionally convexly bent surface portion (6, 5?) which connects to and extends backwards from the flank (2, 2?) and the chord of which constitutes at least 20%, preferably at least 30% and, most preferably, at least 40% of the total cross-sectional length of the chipper knife. The invention also relates to a holder for such a chipper knife.

Abstract: A blade (2) for a comminution machine of the type having interleaved counter-rotating blades (2) in the case of two shafts (1) or a single set of blades in the case of a single rotating shaft includes a carrier (20) with replaceable teeth (4) and wear plates (3). Each tooth (4) has to tooth tip (121) which projects from it and terminates in a bursting point (121), a forwardly raked receding surface (137) which recedes inwardly from the base of the tooth tip (121) and a receding surface (24) on the wear plates (3A, 3B) which extends inwardly from the base of the tooth (4) to a corner (9) at which it meets a trailing surface (24) on other wear plates (3C, 3D). Shear edges (83) are provided on the teeth (4), on the receding surfaces (24) where they meet the sides (22) of the wear plates (3A, 3D) and on the trailing surfaces where they meets the sides (22) of the wear plates (3C, 3D), and additional bursting points (149) may be provided on the receding surfaces.

Abstract: A cutting tool for a stump cutter device, having a holder and at least one cutter insert unit, wherein the cutter insert unit has a cutter head and a shank, and wherein the cutter insert unit can be connected with the holder by its shank. To achieve a simple and cost-effective tool exchange, along with the simultaneous low wear of the contact faces, the shank of the cutter insert unit respectively has at least a tapering shank section and at least a widened shank section. The holder has a recess with protrusions corresponding to the tapering shank section and an undercut area corresponding to the widened shank section and thus provides a positive connection between the shank and the holder.

Abstract: A cutting tool holder, a cutting bit, and a retainer maintaining the cutting bit at a prescribed position relative to the tool holder. The cutting bit is received in a slot located in a first lateral surface that extends through the top surface. The retainer is received in an opening included in the first lateral surface that intercepts the slot. The retainer includes a planar tapered surface that contacts an upwardly and laterally facing oblique surface on a lower end of the cutting bit to hold the lower end of the cutting tool in contact with a lower surface of the slot.

Abstract: A stump grinding disk includes a metallic wheel defining an axis of rotation and including a pair of side surfaces and a circumferential outer edge surface. The outer edge surface includes a plurality of circumferentially spaced recesses. Each recess extends axially completely through the disk. A plurality of side cutting elements are mounted on each side surface. A plurality of outer peripheral cutters are spaced circumferentially apart around the outer edge surface. Wear strips are mounted in respective recesses. Each wear strip includes a metal matrix in which hard particles are disposed. Each wear strip defines a radially inner surface affixed to the wheel, and a radially outer surface arranged substantially flush with adjacent portions of the outer edge surface.

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 dual arbor scrap chopper is disclosed having a number of chopper blades attached to each arbor. The blades are designed to be more easily fitted into a blade recess formed on the arbor, and are preferably designed to provide a blade cutting surface which more closely resembles the optimal elliptical shape without the need for complex cutting patterns. A dual arbor scrap chopper with improved blade performance and ease of blade change-over is provided.

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: In a rotor construction for hammer- or chopper mills the rotor is formed by a cylindrical shell structure (2) transversally profiled for providing a drum surface comprising at least one longitudinally extending recess (6) for accommodation of base portions of chopper members. In the rotor construction the at least one recess (6) is provided with chopper positioning means (8, 18) at fixed locations for lateral stabilisation of said base portions and for stable accommodation of shaft members (12) for pivotable attachment of said chopper members (14).

Abstract: A shredder apparatus and method for shredding wet chip materials in which the shredder utilizes a shredder mechanism having a shaft attached to a frame, a bearing assembly disposed on the shaft, and a rotatable rotor disposed on the bearing assembly. First shredder members are attached to and rotatable with the rotor, and cooperate with second shredder members attached to the frame to shred wet chip materials fed into the shredder apparatus.

Abstract: The invention relates to a multi-roller crusher for the comminuting of mineral mill-feed, whereby the crushing roll are provided with crushing teeth, extending in the circumferential and longitudinal axial directions. Viewed in plan, the crushing teeth are arranged on each crushing roller such that several serial crushing teeth groups are formed behind each other, the imagined connection lines of which run successively at an inclined angle to the plan (1?,2?) of each crushing roller outer edge in the direction of the crushing roller centre.

Abstract: A cutting machine used for cutting elongate plastic materials into granules includes a cutting tool, which consists of a roller-shaped body, several knives, and soft metallic bars; the roller-shaped body has lengthwise extended holding trenches spaced on an outer side, and fitting trenches formed along lateral sides of the holding trenches; each knife has a lengthwise extending fitting trench on a lateral side thereof; the knives are fitted in respective ones of the holding trenches of the roller-shaped body with blades thereof projecting out; the soft metallic bars are fitted in respective ones of the holding trenches of the body and touching the corresponding knives; the soft metallic bars are pressed with such an external force as to change shape and project into the fitting trenches of the body as well as the fitting trenches of the knives, thus securing the knives to the body.

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: The invention discloses an impact shears having a rotor with individual chopping blades disposed on the rotor in a predetermined arrangement and with blade(s) or blade system that is generally stationary vis-à-vis the rotation of the rotor. The blade is held in a blade holder on the stator side of the rotor. The blade holder is movable on the stator about an axis parallel to the rotational axis of the rotor and carries at least two blades, or blade systems, that are expediently disposed at the same angular distance to one another. The blade holder can be rotated about an axis that extends parallel to the rotational axis of the rotor so that every blade of the blade holder can be brought in a cutting position to interact with the chopping blades of the rotor and can be locked in position with respect to the chopping blades.

Abstract: An apparatus suitable for treating mineral material, particularly excavated earth, has two rollers that rotate in opposite directions, on which a plurality of elements is disposed, the elements serving to transport and reduce the material in case its particle size is too large. Elements that are designed to exert a notch effect onto particle sizes larger than a minimum size are provided for reducing brittle and large-particle components of the mineral material, in particular. The reduction by means of the notch effect has been proven to save energy and subject machines to low wear. The elements that produce the notch effect can also reduce wood (tree stumps).

Abstract: A sewage cleaning and comminuting system is provided with a pair of dissimilar sized cutter stacks that extends across an influent channel which intercepts all solids too large to pass there through. The dissimilar sized cutter stacks are capable of grinding large and round shaped objects. The cutter stacks rotate at dissimilar speeds and require less energy to grind solids than other grinders having similar sized grinders rotating at the same speed. The system includes an integrated cleaning assembly whereby debris accumulated between the cutter disks is removed as the cutter disks rotate. Embodiments are provided including grinders that employ three and four shafts. Another embodiment is directed to an improved cutter disk. Yet another embodiment includes an auger screen assembly used in conjunction with the comminuting system to remove solids from the effluent stream.

Abstract: A fragmenting rotor assembly for waste wood and other fragmentable material has a drive shaft assembly including mechanism for driving the shaft in a direction of rotation. 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 hammers. The drive shaft has a series of rotors fixed in axially spaced relation thereon. The hammer mechanisms include hammer supports having portions situated axially sidewisely between the rotors on hammer support members spanning the rotors and rotating with the rotor assembly.

Abstract: A waste grinder and a method for maintenance of the grinder. The grinder comprises at least one rotor which has at least one shearing wheel comprising: a ring-support, which is designed to be rotated by a shaft and defines a plurality of peripheral sections, a plurality of shearing blades which are disposed corresponding to the sections such as to project radially relative to the peripheral surface of the ring-support, the wheel comprises a plurality of blade-holder parts, onto which the blades are secured by detachable securing elements which are accessible from the outer lateral shearing surfaces of the blades, the blade-holder parts being designed to be applied and secured by detachable elements for securing onto the sections of the peripheral surface of the ring-support.

Abstract: A stump grinding mechanism includes a disc having recesses formed in an outer peripheral surface thereof. Peripheral cutting assemblies are mounted in respective recesses. Each cutting assembly includes a holder fixed in the recess, and a cutter tooth mounted in the holder. The cutter tooth includes a shank extending through the holder and secured thereto by a nut. The nut is disposed within a pocket of the holder to be shielded during a cutting operation. The holder includes gauge marks to facilitate a proper angular orienting of the cutting assembly within the recess. Some of the cutter teeth have flat cutter faces optimized for cutting wood fiber, whereas others of the cutter teeth have cutter faces defined by converging surface portions to be optimized for cutting/displacing rocks.

Abstract: A device for comminuting material includes a plurality of knife carriers arranged along a comminuting path, wherein each knife carrier has a receiving unit with a stop for a knife bundle. The knife bundle is held in a position of operation in the receiving unit, wherein each knife bundle is composed of a knife support plate and a chipping knife. The knife support plate and the chipping knife are connected to each other so as to overlap in a transverse direction in a plane of the knife support plate. The knife support plate has at a longitudinal side thereof facing the stop of the knife carrier at least one stop surface, wherein the stop surface is adjustable in the transverse direction of the knife support plate.

Abstract: A retaining wedge assembly for securing an impeller bar to the rotor of a horizontal shaft impact crusher comprises a recess defined in the rotor and sized to receive the impeller bar. The recess includes a first seat shaped to engage a first portion of the impeller bar and a second seat. A retaining wedge includes a first portion adapted to engage a second portion of the impeller bar, and a second portion sized to engage the second seat. A countersunk slot on the second seat receives the retaining wedge, which in turn cooperates to secure the impeller bar in the recess. Guide flanges may be provided for limiting axial movement of the retaining wedge. Thus, the impeller bar may be supported in the recess prior to start-up of the horizontal shaft impact crusher.

Abstract: A multi-functional tool 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 multi-functional tool assembly also includes a multi-functional tool attached to the tool holder to reduce waste material and to aggressively output the reduced waste material from the rotor assembly of the waste processing machine.

Abstract: A disintegrator roll for use in a textile spinning machine, such as an open-end spinning machine, includes a roll body releasably mounted onto a drive shaft. A fittings carrier with associated fittings is releasably mounted on the roll body. A releasable connection apparatus is operably disposed between either the fittings carrier and the roll body or the roll body and the drive shaft. The connection apparatus is actuated by an axial force applied generally parallel to the drive shaft.

Abstract: A rotary grinder having a cylindrical drum that includes a cylindrical surface. The cylindrical surface defines two holes. The drum receives opposite ends of a through-member at the two holes such that the opposite ends of the through-member comprise hammers when the cylindrical drum is rotated. A single retaining member is used to secure all of the through-members to the drum.

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: The invention relates to a separation body holder (1) for submerged granulators, with a multiplicity of radially extending arms (2), which in each case display an indentation for receiving and holding a separation body (4). The separation body is exchangeably fastened in the indentation by means of screws or the like, and the separation body holding is arranged on a drive shaft (7). The separation body holding, with its separation bodies, works together with a cut-off head, and the separation bodies are formed as rectangular impact slats. The bottom surface of each indentation runs substantially parallel to the axis of the drive shaft (7).

Abstract: A crushing roll which has teeth which are replaceable on the roll body, and where are the teeth or picks can be removed individually from the periphery of the roll body. The picks can be attached to a holder, and the holder can be removably attached to the roll such that the picks and the holder can be removed from the roll in an individual manner. The holder can be designed to also protect the surface of the roll to reduce damage to the roll surface.

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: Concrete-crushing pincers comprise a first pincer jaw and a second pincer jaw which are swivelingly connected to one another via a joint and which are movable from an open position into a closed position for demolishing a concrete structural member reinforced with reinforcing irons. The first pincer jaw is formed by a frame body. The second pincer jaw is formed by a body. The first pincer jaw and the second pincer jaw have concrete-crushing sectors and cutting elements. The cutting elements are detachably fastened in the first pincer jaw and the second pincer jaw and can be exchanged.

Abstract: A brush cutting head having a cylindrical, tubular, support base. A plurality of cutting tooth mounting blocks are fixedly mounted on the cylindrical outer surface of the base, the blocks extending transverse to the longitudinal axis of the base, each block having a front face and sides. A cutting tooth is provided for each mounting block, each cutting tooth made from a plate having a uniform thickness with an inner surface and an outer surface. Each tooth has a straight, relatively long, base section and a straight, relatively short, cutting section bent from one end of the base section toward the inner surface to form an obtuse angle between the inner surface of the base section and the inner surface of the cutting section. Each tooth is mounted on the block with the base section of the tooth adjacent the front face of the block and the base section extending outwardly from the base, and with the cutting section above the block and extending forwardly from the base section of the tooth.

Abstract: A ring slicer having an easily removable knife and knife assembly. Within the scope of the invention, there is an apparatus for cutting an article of wood, comprising a ring assembly comprising two end plates and a plurality of knife assemblies. Each knife assembly comprises a knife, a base, and a clamp for clamping the knife to the base. The assemblies are provided for installation between the end plates. According to one aspect of the invention, the bases include one or more first apertures and at least one of the end plates includes a corresponding set of one or more second apertures therethrough for receiving respective dowel pins. The first apertures are adapted to snugly slidingly receive the respective dowel pins. According to another aspect of the invention, for each knife assembly, the clamp includes an upper clamping member that is mounted to the base so that a portion of the upper clamping member is cantilevered from the base.

Abstract: In a rotor construction for hammer- or chopper mills the rotor is formed by a cylindrical shell structure (2) transversally profiled for providing a drum surface comprising at least one longitudinally extending recess (6) for accommodation of base portions of chopper members. In the rotor construction the at least one recess (6) is provided with chopper positioning means (8, 18) at fixed locations for lateral stabilisation of said base portions and for stable accommodation of shaft members (12) for pivotable attachment of said chopper members (14).

Abstract: The invention relates to a chipper knife for chippers of the type comprising a tool (12) which is rotatable on an axis of rotation and is in the form of, for example a drum, disc or truncated conical body, which supports a plurality of such chipper knives. The chipper knife comprises at least one cutting edge (1) which is formed between a flank (2, 2′) and a chip guiding surface (4, 4′), and two opposite main surfaces (3, 3′) which are adapted to abut against and be retained on the opposite seats (14, 15) of a holder (9, 10) on the tool. At least one main surface (3, 3′) of the chipper knife which is located on a wood side of the chipper knife comprises a cross-sectionally convexly bent surface portion (6, 5′) which connects to and extends backwards from the flank (2, 2′) and the chord of which constitutes at least 20%, preferably at least 30% and, most preferably, at least 40% of the total cross-sectional length of the chipper knife.

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: A device and method are provided for pre-disintegrating and cutting fibrous plants to staple length for the separation of fibres and woody parts with the goals to accelerate drying, if applied during harvesting, but mainly to facilitate separation of woody parts before the main fiber recovery machine in order to increase useful performance of same. The device includes a cutting rotor, a supply devoce, cutting blades, and one or more impact or snapping tools. In some fields of application, for example, pulp and paper manufacture or manufacture of insulating material, the degree of pre-disintegration or pre-decortication attained with the device and process, is sufficient so that a further decortication can be dispensed thus improving efficiency.

Abstract: A blade (2) for a comminution machine of the type having interleaved counter-rotating blades (2) in the case of two shafts (1) or a single set of blades in the case of a single rotating shaft includes a carrier (20) with replaceable teeth (4) and wear plates (3). Each tooth (4) has to tooth tip (121) which projects from it and terminates in a bursting point (121), a forwardly raked receding surface (137) which recedes inwardly from the base of the tooth tip (121) and a receding surface (24) on the wear plates (3A, 3B) which extends inwardly from the base of the tooth (4) to a corner (9) at which it meets a trailing surface (24) on other wear plates (3C, 3D). Shear edges (83) are provided on the teeth (4), on the receding surfaces (24) where they meet the sides (22) of the wear plates (3A, 3D) and on the trailing surfaces where they meets the sides (22) of the wear plates (3C, 3D), and additional bursting points (149) may be provided on the receding surfaces.

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 primary reduction apparatus having a frame structure and at least one shaft mounted on the frame. The shaft is reversibly rotatable around an axis of rotation in a first direction of rotation or a second direction of rotation. A drive supplies rotation force to rotate the shaft. Protruding cutters are arranged on the shaft, each cutter having a stem portion which edges define shear edges, a first protruding wedge-shaped tooth arranged on the stem portion and facing the first direction of rotation and a second protruding wedge-shaped tooth facing the second direction of rotation. Cross members connect sides of the frame with cracker jaw plates removably attached to each cross member. The cracker jaw plates have a working surface with multiple pierce points forming a serrated edge to cooperate with the cutters. The cracker jaw plates have a relief on a surface of the cracker jaw plates facing the cutter and are removably attached to the cross members.

Abstract: A brush cutting head having a cylindrical, tubular, support base. A plurality of cutting tooth mounting blocks are fixedly mounted on the cylindrical outer surface of the base, the blocks extending transverse to the longitudinal axis of the base, each block having a front face and sides. A cutting tooth is provided for each mounting block, each cutting tooth made from a plate having a uniform thickness with an inner surface and an outer surface. Each tooth has a straight, relatively long, base section and a straight, relatively short, cutting section bent from one end of the base section toward the inner surface to form an obtuse angle between the inner surface of the base section and the inner surface of the cutting section. Each tooth is mounted on the block with the base section of the tooth adjacent the front face of the block and the base section extending outwardly from the base, and with the cutting section above the block and extending forwardly from the base section of the tooth.

Abstract: The present invention relates to a wood-milling cutter. A circular cutter head includes a plurality of semicircular engaging grooves at the rim thereof for receiving a plurality of hilts with corresponding arched surface. A semicircular screw hole is formed in the middle of the top rim of the semicircular engaging grooves. A blade is received at the bottom of said hilt. A semicircular cavity corresponding to the semicircular screw hole of the cutter head is provided in the middle of the top of the hilt and equipped with an annular flange. Therefore, the semicircular screw hole and the semicircular cavity form a full circular hole to receive a trimming screw with an annular groove in the middle thereof. The annular flange of the semicircular cavity is engaged in the annular groove of the trimming screw while the threaded member of the trimming screw joins the semicircular screw hole of the semicircular engaging grooves.

Abstract: A chopper for chopping items such as fibers, fiber strands, ribbon, etc. by passing the items continuously in a loose, unwound, condition through the nip of a blade roll and a backup roll having a working layer on its outer periphery. The chopper of the present invention uses one or more rolls that are radially expandable and retractable to replace the blade roll and/or the backup roll on the prior art choppers so that worn blades and/or a worn working layer can be more quickly and more easily replaced with a new or repaired working layer or blade holder containing sharp blades. The chopper of the present invention eliminates the need to carry large, heavy, awkward rolls through the fiber forming rooms or areas where the items are being chopped and also to transport such rolls back and forth to the location where they are being rebuilt.

Abstract: The present invention provides a rock crusher tooth design which when exposed to material flows during operation of the rock/material crusher will increase the wear life of the tooth by resisting wear caused by a material flow across, onto, and around the tooth. It is a general object of the present invention to provide a rock crusher with a plurality of teeth formed integrally therein. The tooth has a design that significantly improves the wear resistance of each tooth. The tooth structure includes a plurality of hard material compact inserts integrated within the tooth structure. The compact inserts are integrally formed with the teeth into unitary structures. In an embodiment of the invention, hard abrasive material, such as tungsten-carbide compact inserts, are appropriately positioned in a steel cast tooth mold, the steel flows into spaces between and around the tungsten-carbide inserts trapping them in a steel matrix. The casting method results in an integral unitary steel tooth.

Abstract: When material is thrown in a hopper, material of small particle diameter is loaded in between breaking teeth on two rotors and transferred toward a crushing space between the rotors by rotation. The material of small particle diameter is pressed by compression teeth on one rotor against cutting teeth on the other rotor, thereby causing compressive crushing. When material of small particle diameter clogs the crushing space and stays therein, the cutting teeth cut the material to form a gap. The breaking teeth on the two rotors move odd-shaped material or the like toward the crushing space by similar action. Consequently, the odd-shaped material assumes such a posture that it is caught between the breaking teeth, and is crushed by the breaking teeth or cut by the wedge effect.

Abstract: A retaining wedge assembly for securing an impeller bar to the rotor of a horizontal shaft impact crusher comprises a recess defined in the rotor and sized to receive the impeller bar. The recess includes a first seat shaped to engage a first portion of the impeller bar and a second seat. A retaining wedge includes a first portion adapted to engage a second portion of the impeller bar, and a second portion sized to engage the second seat. A countersunk slot on the second seat receives the retaining wedge, which in turn cooperates to secure the impeller bar in the recess. Guide flanges may be provided for limiting axial movement of the retaining wedge. Thus, the impeller bar may be supported in the recess prior to start-up of the horizontal shaft impact crusher.

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: The invention relates to a separation body holder (1) for submerged granulators, with a multiplicity of radially extending arms (2), which in each case display an indentation for receiving and holding a separation body (4). The separation body is exchangeably fastened in the indentation by means of screws or the like, and the separation body holding is arranged on a drive shaft (7). The separation body holding, with its separation bodies, works together with a cut-off head, and the separation bodies are formed as rectangular impact slats. The bottom surface of each indentation runs substantially parallel to the axis of the drive shaft (7).

Abstract: The present invention is an improved rotary granular material cutting apparatus and knife blade assembly. The apparatus comprises a perforated drum that may receive granular material into its interior. The grains of material extend through perforations in the spinning drum where they encounter a series of knife blades. The blades are arranged to form angles of contact with tangents to the spinning drum. Those angles of contact are steeper on the side regions of the spinning drum tan on the bottom regions. The apparatus also includes a grooved interior baffle to disburse input material within the drum, and knife-mounting wedges that include toe or base stops to help secure knife it blades in arrangement about the drum.

Abstract: A plurality of spike-like projections A, B risen at an obtuse angle, at an acute angle or at right angles in a rotational direction of a metallic rod 1 are formed on an inner peripheral surface of the metallic rod 1 by plastic processing.