Abstract: A circular disc element having at least two beam elements. Each beam element extends beyond an outer circumference of the circular disc element in an extension direction which is parallel to a radial direction of the disc element. The circular disc element further includes at least two holes extending through the circular disc element in a longitudinal direction which is substantially perpendicular to each of the extension directions with respect to a circumferential direction of the circular disc element, which circumferential direction corresponds to the outer circumference of the circular disc element. The circular disc element can function as a grinding means in a grinding process for grinding slurry.

Abstract: The present disclosure relates to a material reducing machine convertible between a grinding configuration and a chipping configuration. The material reducing machine includes a rotary component that is rotatable about an axis of rotation, the rotary component defining a grinding configuration boundary that extends at least partially around the axis of rotation. The material reducing machine also includes a plurality of hammers secured to the rotary component, the hammers including end portions that project outwardly beyond the grinding configuration boundary of the rotary component. Furthermore, the material reducing machine includes a boundary enlarging structure that mounts over the rotary component, the boundary enlarging structure defining a chipping configuration boundary that extends at least partially around the axis of rotation when the boundary enlarging structure is mounted over the rotary component, the chipping configuration boundary being positioned outside the grinding configuration boundary.

Abstract: A radially projecting member (e.g., a paddle assembly) including a pin having a head; a paddle pivotally engaged to the head; and a shear member engaged to the head and to the paddle, the shear member being constructed and arranged to fracture to permit pivotal rotation of the paddle relative to the head.

Abstract: The mill includes a milling chamber (1) containing a rotor (2) provided with hammers (4), and at least one impact screen mounted pivotably with the aid of an adjusting jack in order to move the bottom end of the screen toward or away from the rotor so as to define, between the bottom end of the screen and the free end of the hammers, a spacing which determines a given particle size. The mill includes a device for positioning the rotor that includes indexing elements for positioning the end of one of the hammers as close as possible to the screen for adjusting the spacing. It includes a geared motor driving a pinion capable of engaging with a toothed wheel fixed in rotation to the rotor so as to rotate it from a rest state until one of the hammers is as close as possible to the screen.

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: The invention relates to a rotor 1 for impactors, comprising a plurality of cast steel rotor discs 2, welded together at their widened flanges 3 that are touching one another and which feature a widened outer rim 4, which is interrupted by peripheral recesses 5 to accommodate blow bars. For improved accessibility to the retaining pieces 16 holding the blow bars in the blow bar holders, provision according to the invention is made for the sides of the partial sections 7 of the outer rims 4 to be tapered circumferentially in the direction opposite to the rotation direction of the rotor.

Abstract: A grinding apparatus optimizes grinding efficiency within the grinding chamber by providing grinding action over a 360.degree. range encompassed by a set of breaker bars and one or more arcuate screening elements. Arcuate screening elements have an inside radius that identically matches the inside radius of the breaker bars. The screening elements act as grinding mechanisms as well as more conventional filtering mechanisms due to increased grinding capacity when the inside radial surface of the screening elements and the inside radial surface defined by the breaker bars are equidistant from the axis of a rotational shaft that supports a plurality of circumferentially spaced hammers.

Abstract: An improved rotor assembly for a horizontal impact crusher has segmented blow bars in a continuous wedge structure which overlaps the blow bar segment joints to structurally tie the blow bar segments together. Backer face plates are also provided to accommodate blow bars of different thicknesses within the same wedge slot.

Abstract: The invention concerns itself with a hammermill, specifically for the fragmentation of metal car bodies, equipped with a shaft to which radially pointing rotor arms are attached, to the ends of which movable hammers are attached in the direction of the shaft rotation. The hammers are individually attached to the rotor arms, are U-shaped and embrace the end and sides of the rotor arms, thereby protecting the rotor arm ends and sides without requiring additional protective caps. On one of the preferred embodiments the positioning of the hammers is configured eccentrically so that an adjustment of the travel circle radii of the hammers is possible allowing greatly extended periods of operation of the hammermill.

Abstract: An improved chopper arrangement for use in recovering and allowing the recycling of chopped metal products such as steel, aluminum, copper as utilized in electric transmission lines as well as the recovery of insulation materials thereon. The chopper contains a rotor mounted for rotation within a housing. The rotor has a plurality of rotor cutting blades thereon which pass in wire chopping relationship to at least one fixed blade mounted on a cartridge coupled to the housing. The fixed blade or cartridge cutting blade and the rotating blades or rotor cutting blade are generally rectangular in cross-section. Each of the rotor cutting blades is clampingly mounted on the rotor to allow comparatively rapid movement of the rotor cutting blade towards and away from the cartridge cutting blade to accommodate for wear of the blades and/or differences in the material being chopped.

Abstract: The invention concerns itself with a hammermill, specifically for the fragmentation of metal car bodies, equipped with a shaft to which radially pointing rotor arms are attached, to the ends of which movable hammers are attached in the direction of the shaft rotation. The hammers are individually attached to the rotor arms, are U-shaped and embrace the end and sides of the rotor arms, thereby protecting the rotor arm ends and sides without requiring additional protective caps. On one of the preferred embodiments the positioning of the hammers is configured eccentrically so that an adjustment of the travel circle radii of the hammers is possible allowing greatly extended periods of operation of the hammermill.

Abstract: A To facilitate manipulation of an impact member 20 of a coarse reduction impact crusher, the impact member 20 together with its wedge members 22 is only loosely inserted in an accommodating cavity 14 for the impact member, whereby when rotation of a rotor 10 is started the impact member 20 and wedge members 22 are urged by the resulting centrifugal force from a disengaged position near the axis of the rotor into a wedged position relatively distant from said axis.

Abstract: A mobile machine and process are provided for milling, mixing, wetting and re-forming an initial windrow of vertically layered ingredients used in the pre-wet cycle for producing mushroom compost. In performing these actions, an assembly of toothed drums, rotating in the same direction and arranged along an upwardly and forwardly projecting inclined plane, progressively mills the windrow across its cross-section longitudinally and propels the milled material upwardly and rearwardly so that it drops and mixes to form a vertically blended, transverse product. The product is preferably cross-mixed by auguring it transversely and depositing it at a transfer point, from whence it is elevated and delivered by a conveyor belt, to form a new windrow parallel or collinear with the initial windrow. Water is sprayed on the ingredients in the course of propelling auguring and elevating.

Abstract: A rotor which is to be used in an impact crusher has a set of coaxial discs with radially inwardly extending peripheral recesses for elongated beater bars which are parallel to the rotor axis and each of which extends into a discrete recess of each disc. The beater bars have male or female detent elements which cooperate with complementary female or male detent elements of the discs at the rear sides of the beater bars to prevent radially outward movements of the beater bars in actual use of the rotor. The front sides of the beater bars are engaged by wedges which are biased radially outwardly against the beater bars and against the respective discs by fluid-operated thrust elements in the recesses of the discs. Each thrust element has a piston rod which bears against the respective wedge and urges the wedge radially outwardly in the respective recess, and each thrust element reacts against an elongated rail which is installed in the deepmost portions of a set of aligned recesses of the discs.

Abstract: This invention relates to a gyroscopic centrifuge and mill apparatus having 1) a main mill housing assembly; 2) a material impact means mounted within the main mill housing assembly; and 3) a material conveyor means operable to a) convey raw waste/trash material thereto; b) convey heavy infraction materials initially processed outwardly from the main mill housing assembly; and c) convey the finally processed waste/trash material laterally of the main mill housing assembly. The material impact means is provided with a plurality of spaced adjustable impact blade assemblies mounted on a main upright driven shaft member and being associated with respective separator shelf assemblies in separate waste treatment zones.

Abstract: An apparatus for manipulating horizontal impactor hammers includes a crossbeam and a pair of depending lift arms, each lift arm having a corresponding pivot arm configured to be secured to respective ends of the hammer and to pivot about the lift arm. Once the pivot arms are attached to the ends of the hammer, the crossbeam is elevated, withdrawing the hammer from the rotor and causing the hammer to invert about the pivot axis for reinsertion into the rotor. Provisions are also made for rotating the withdrawn hammer about a vertical axis.

Abstract: A hammer mill for crushing ore and the like materials comprises a cylindrical case provided with armor plates on its inside, and a rotor journalled in the case and carrying a plurality of hammers, as well as anchor means for holding each hammer to the rotor at a position facing the armor plates, which includes a mortise, formed at the rotor periphery and having opposed walls convergent outwardly and substantially dovetail-like, and a tenon formed on the hammer integrally therewith and having a cross-sectional shape which matches that of the mortise, said tenon engaging with the mortise walls and being urged, by the centrifugal force developed within the hammer by the rotating rotor, to wedge itself stably in between said mortise walls.

Abstract: The impeller bars of an "open" type rotor of an impact cruscher are clamped to each disc of the rotor by means of pairs of cooperating wedges. Each pair of wedges consists of a first wedge acting radially outwards of the rotor between the disc and the impeller bars and a second wedge acting axially of the rotor between the disc and the first wedge to drive the first wedge radially outwards. Means including a hook are also disclosed for lifting the impeller bars onto the rotor for initial installation as well as for later repositioning of the bars to compensate for wear.

Abstract: The rotor of an impact crusher includes an locking mechanism for impeller bars which may vary in thickness. The locking mechanism includes a compound wedging mechanism which generates an initial, axial urging force by tightening a bolt at an accessible location on the rotor. The force is translated to a first wedge through a second wedge to urge the first wedge outward into an outward converging gap between a side wall in a disc of the rotor and the impeller bar to seat the bar. The mean width of the first wedge is adjustable to accommodate impeller bars of various thicknesses. A guide track in the rotor and specifically in discs of an "open" rotor locate the second wedge in relationship to the rotor and independently of the width adjustment of the first wedge to maintain a constant point of force application against the first wedge.

Abstract: A disposable, double-edged rotor knife and a disposable, double-edged bed knife for use in plastic granulating machines. The rotor knife has a general "Z" shape and is held in sandwiched engagement to the rotor of the machine by a clamp that has a wedge shaped bottom. The clamp wedges the rotor knife into a wedge shaped channel formed in the rotor when a bolt that does not pass through the rotor knife is tightened. In one embodiment, the longitudinal axis of the bolt is parallel to a plane normal to the axis of rotation of the rotor, and in a second embodiment a ten degree angle is formed between the axis of the bolt and the plane. The bed knife is keyed to the machine.

Abstract: Tooth assemblies upon the breaker rings of the rotor of the apparatus each include tooth and seat components having abutting surfaces that prevent forward, rearward, inward and lateral movement of the tooth relative to the seat and rotor. Outward tooth movement during operation of the apparatus is prevented by a pin that extends generally parallel to the rotor axis through aligned bores within the tooth and its seat. The pin is shielded from damaging impacts with the material being ground and from detrimental bending stresses, and is releasably retained within the bores by a detent that permits convenient removal of the pin when replacement or repair of the tooth is required.

Abstract: An impact crusher rotor comprises radially slotted discs secured to a shaft at axially spaced intervals and hammer bars releasably secured in the disc slots. A backup bar secured in a slot in every disc provides a keyed connection with a hammer bar, at its rear, and a wedge in the slot maintains the hammer bar engaged against the backing bar with a force that increases with rotor speed. Each wedge can be established in an initial locking position by a screw that has its length radial to the rotor axis, has a threaded connection with the wedge, and has an end reacting against a bottom disc surface defined by the slot. Each wedge is confined to radial motion relative to the disc by a U-shaped shoe which straddles the disc periphery and is releasably fixed to the disc and which also protects a portion of the disc periphery that is in front of the hammer bar.

Abstract: A device for the fastening of hammers in axially extending cutouts of rebound-mill rotors having a form-locked attachment between each hammer and one side of the corresponding cutout and a force-locked attachment on the other side by means of at least one wedge-shaped clamping ledge which can be acted on in clamping direction by a plurality of pressure elements each of which has a clamping piston acted on by a pressure medium and which are connected to each other by a common pressure conduit which can be closed by a valve. The clamping pistons are arranged in the clamping ledge and are connected by the pressure conduit which debouches in at least one end surface of the clamping ledge and is filled with a flowable, plastic, compressible pressure medium which, in order to obtain excess pressure, can be acted on by a setting piston which is developed on a closure screw which can be screwed into the mouth of the pressure conduit.

Abstract: A wedge and clamp device for retaining a wedge in a slot of a disc and against a breaker bar of a rotor assembly in an impact crusher. The clamping arrangement comprises a sleeve which is placed inwardly in the slot, two plates each mounted along the opposed outer faces of the disc in alignment with the sleeve and a bolt extending through the sleeve and two plates. The wedge has a U-groove along its top surface to receive the opposite edges of the disc, and the two plates overlap the wedge so that the wedge can move in a direction out of the slot to increase the holding force against the breaker bar during operation of the crusher.

Abstract: In an impact crusher for reducing the size of particulate material, the breaker bars having one or more quasi-circular depressions for engaging a circular back-up bar is secured to a rotor by means of a serrated wedge and C-clamp assembly. A newly designed housing opening permits the breaker bars to be placed in an optimum horizontal positioning and a rotor-locking assembly holds the back-up bars in this optimum positioning and provides support for the breaker bars during replacement thereof.

Abstract: A fiber conditioner comprises an outer casing or enclosure and a perforated screen positioned within the casing. The screen is formed by a plurality of attached invertible and sexless sections. A plurality of hammer assemblies are rotatably positioned within the screen for impelling material fed into the conditioner against the screen in order to separate it into pitch and fiber. A multi-piece shaft rotates the hammer assemblies, which are connected to a rotor shaft assembly forming the central portion of the shaft. An upper stub shaft assembly and a lower stub shaft assembly can be connected to opposite ends of the rotor shaft assembly by clamping. By releasing the clamps, each shaft assembly can be removed from the conditioner in a generally horizontal manner through an opening created by the removal of at least one screen section.

Abstract: A rotor for a hammer mill and the like comprising a rotor body and a hammer secured to said rotor body, said hammer being comprised essentially of flexible wire rope.

Abstract: An improved apparatus for depithing fibrous vegetable material, such as sugarcane bagasse, comprises a rotary hammer assembly suspended from a rigid framework that is supported removably on an upright enclosure which itself is supported in functioning position by a framework on its base. The hammer assembly comprises a plurality of individual stacks of hammers and their holders, each of which constitutes a unit separate from the other stacks and has means individual thereto for adjusting the radial positions of the hammers in the stack relative to a screening wall through which pith is separated from fibers by rotation of the hammer assembly. The screening wall is composed of several perforated arcuate screening sections any of which may be reached through a door in the enclosure, and may be unfastened and displaced to give access to the hammer assembly or for replacement of a screening section.

Abstract: A rotor for a coarse reduction impact crusher with exchangeable blow bars including a rotor disk to be driven in rotation with a plurality of radially facing recesses in the periphery and the bars locked in the recesses between a supporting element welded in the recess on the trailing side thereof and a shoe being U-shaped and locked over a projection on the rotor disk with a pair of clamping keys securing the shoe with one of the keys being U-shaped, and the keys being removable axially, and the blow bar having forwardly and rearwardly extending teeth with inclined outwardly facing surfaces to lock beneath corresponding surfaces on the supporting element.

Abstract: A device for fastening a chisel to a rotatable chisel block of a wood working machine by means of a clamping bolt engaging a fastening slot in the chisel block, the shank of said bolt extending through an elongated hole in the chisel and by means of a clamping plate holding the chisel and having a transverse extension supporting set screws which engage a rearwardly diverging safety face of the chisel wherein the transverse extension has safety cams engaging recesses in the fastening slot so that the transverse extension is locked in place in a radial direction.