Abstract: The disclosure relates to novel components of a gyratory crusher (1) which aim to promote self-alignment of a mainshaft assembly (2) upon introduction of the mainshaft assembly (2) into the gyratory crusher (1) by lowering the mainshaft assembly (2) from above the gyratory crusher (1) into the gyratory crusher (1). The novel components may include a dust bonnet (9) having a plurality of guides (15), an end plate (32) having a lower alignment chamfer (36), and/or a counterweight (13) having an alignment chamfer (41). Each of the novel components may be configured to bias a lower mainshaft (26) of the mainshaft assembly (2) of the gyratory crusher (1) into concentric alignment with a bore (56) of the eccentric (11) or eccentric liner (12).

Abstract: A crusher device includes a frame, a rotating mechanism positioned in the frame, and a plurality of curtains connected to the frame. The curtains are spaced from the rotating mechanism to define a passageway along which material moves while being crushed. A first curtain is connected to the frame via at least one first cylinder. The first curtain is connected to a second curtain via at least one pivotal connection and at least one second cylinder. The at least one second cylinder is retracted automatically when the at least one first cylinder is forcibly retracted to adjust spacing between the first curtain and the rotating mechanism due to an uncrushable. The automatic retraction of the at least one second cylinder rotates the second curtain away from the rotating mechanism. Such movement widens the spacing between the rotating mechanism and the curtains minimizing damage from tramp or uncrushables.

Abstract: A method is provided for controlling a coffee machine grinder, which includes measuring the actual value of physical quantity relating to the percolation process and modifying the ground coffee grain size at least for the next percolation so that a possible detected deviation between the actual value and a reference value for the physical quantity is compensated.

Abstract: A device for locking the micrometric adjustment of the degree of grinding in coffee grinders includes a hollow cylindrical casing for housing a lower grinding wheel carrier, which is connected to a motion transmission shaft, and for housing an upper grinding wheel carrier, which is axially movable; and a threaded ring nut engagable in the casing to adjust the position of the upper grinding wheel carrier, wherein the ring nut has at least one seat for inserting a peg for locking its rotation, and the casing has an undercut slot in which a slider cooperating with the peg is housed, the thickness of the slider being less than the thickness of the slot. A member engages the slider and causes it to rise and to interfere by friction with the upper wall of the slot.

Abstract: A device for locking the micrometric adjustment of the degree of grinding in coffee grinders includes a hollow cylindrical casing for housing a lower grinding wheel carrier, which is connected to a motion transmission shaft, and for housing an upper grinding wheel carrier, which is axially movable; and a threaded ring nut engagable in the casing to adjust the position of the upper grinding wheel carrier, wherein the ring nut has at least one seat for inserting a peg for locking its rotation, and the casing has an undercut slot in which a slider cooperating with the peg is housed, the thickness of the slider being less than the thickness of the slot. A member engages the slider and causes it to rise and to interfere by friction with the upper wall of the slot.

Abstract: An impact crusher includes a crushing chamber, a rotor mounted in the crushing chamber, and an apron having an impact surface, said apron being movably positioned within the chamber. The apron is pre-loaded to oppose forces generated within the crushing chamber. The apron is free to move away from the rotor in the event that the forces generated within the chamber exceed a predetermined threshold. During normal use, the apron is suspended within the chamber against a mechanical stop, and the apron is free to return to its initial suspended position after the removal of uncrushable material from the chamber.

Abstract: A tension adjustment gauge system and method for a ball and ring coal pulverizer is provided that includes a housing, a stationary top grinding ring within the housing, a rotating lower grinding ring within the housing, a plurality of grinding balls between the top grinding ring and the lower grinding ring, an adjustable loading system for applying a compressive force exerted on the top grinding ring and grinding balls against the lower grinding ring. The adjustable loading system includes a single hydraulic assembly mounted on the upper portion of the housing, a gauge mounted to the hydraulic assembly for determining linear movement of a piston of the hydraulic assembly, a plurality of threaded rods mounted to the upper portion of the housing capable of being manually adjusted. The movement of the piston corresponds to an equal distance of movement of a spring gap between an upper and lower portion of the compression spring, such that the gauge indicates the change in the spring gap by moving the piston.

Abstract: An apparatus for food waste treatment which efficiently treats sewage and odor generated from food wastes. The food waste treatment apparatus includes a body (10), a hopper (30) to put the food wastes into the body (10), a crusher (14) installed in the body (10) to crush the food wastes, an agitating container (42) having an agitator (38) therein and provided at a lower portion in the body (10) to agitate the food wastes, a sewage purifying tank (70) provided under the crusher (14) in the body (10) so as to purify sewage generated from the food wastes during a crushing operation of the crusher (14), and a drain pipe (73) extending from the sewage purifying tank (70), with a magnetic material (74) mounted on an end of the drain pipe (73) to secondarily purify the sewage drained from the sewage purifying tank (70) into a sewer pipe.

Abstract: A screening machine on a frame with a hopper having a conveyor belt. The conveyor belt discharges particulate material poured into the hopper into a rotating barrel screen or vibrating planar screen for sifting the material. A hammermill apparatus is pivotably mounted on a hood member to an arm that is pivotably mounted to the frame of the machine. The hammermill is positioned above the conveyor belt at the discharge end. The hammermill can pivot upwardly relative to the arm upon striking a large object on the conveyor belt, and a spring mounted to the arm and the hood biases the hammermill back to its original position. A hydraulic ram is drivingly linked to the arm for manually or automatically displacing the hammermill relative to the conveyor belt.

Abstract: It has been said that the wheel is the greatest invention of all time; when horses or oxen pulled wagons, dirt roads or no roads sufficed, but the wheels of modern transportation require paved roads for cars and trucks, concrete air strips for airplanes, ballast for railroads, concrete for dams, buildings, and many other things. Rock is the material that answers all these needs, but rock must be crushed to usable sizes. Big boulders or quarried rock are crushed by primary stage jaw or very large gyratory crushers that reduces the rock to sizes that second stage crushers can accept, and if the rock needs to be very small a third stage is used. Cone crushers are the crushers of choice for second and often for third stage crushing which is the type crusher of this patent application.

Abstract: A pump for moving a solid containing fluid. The pump is provided with a plurality of vanes passing by an anvil. The vanes act as blades, chopping the solid waste into smaller portions as the vane passes by the anvil. The pump may be provided with a plurality of anvils or a serrated edge to divide the solid waste as finely as desired.

Abstract: A device for comminuting feed material has a rotary blade ring rotating about an axis of rotation. A comminution chamber is enclosed by the rotary blade ring and receives the feed material in an axial direction parallel to the axis of rotation. A counter abutment projects in the axial direction into the comminution chamber. The rotary blade ring is moveable in a radial advancing direction against the counter abutment and applies a pressing force relative to the counter abutment to effect comminution of the feed material in a working position of the counter abutment. The counter abutment has an effective surface facing the feed material and the effective surface is supported so as to be moveable such that, upon surpassing a predetermined value of the pressing force, at least the effective surface performs an escape movement relative to the rotary blade ring in an escape direction.

Abstract: A mineral crusher comprises a roller 50 having a plurality of impeller bars for impelling mineral material against a collection plate 100, upon which a collection of mineral material accumulates. The material thrown against the accumulated material is reduced by impact with the accumulated material. The collection plate is adjustable, so as to adjust the size of mineral accumulation, and is tiltable so as to spring away from the roller when oversize objects, eg pieces of metal or blocks of wood pass through the crusher. The arrangement may have an advantage of incurring reduced wear on the collection plate 100, which may require less frequent replacement. The collection plate 100 is relatively easy to manufacture.

Abstract: A gyratory crusher with a tramp iron relief system having an annular manifold is disclosed. The gyratory crusher includes a frame, with the frame including a circumferential manifold ring having an internal hydraulic channel. A bonnet and a gyratory head are supported by the frame, with the gyratory head being spaced relative to the bonnet such that a crushing chamber is formed therebetween. The bonnet is adjustably mounted to the frame to permit relative vertical movement between the bonnet and the gyratory head. A hydraulic relief system is provided and includes at least one hydraulic cylinder operatively interconnecting the bonnet and the frame and being in flow communication with the hydraulic channel. The hydraulic relief system is arranged to allow uncrushable material to automatically pass through the crushing chamber.

Abstract: A clearing system for a cone crusher used to crush rock. The clearing system includes an actuating member which engages and lifts a lower push rod which is guided through a lower rod boss so as to remain axially aligned with an upper push rod, which in turn is guided by an upper rod boss. The upper push rod engages an adjustment ring which allows the crushing chamber sections to be separated to allow clearing of foreign material from the crusher. A preferably removable intermediate guide engages the lower push rod between the lower rod boss and the actuating member so that the lower push rod remains axially aligned with the actuating member and the upper push rod.

Abstract: Machine for milling cereals and the like of the type comprising at least one pair of cylinders (2, 3) rotating about respective axes of rotation, one of which is fixed and one movable in translation with respect to the other, each end of the movable cylinder (3) being connected to a support member (5), the opposite ends of which are respectively pivotably mounted on a device (20) for adjusting the interaxial distance of the cylinders (2, 3), acting about a single fixed axis of rotation, and on a device (10) for absorbing the reaction forces of the milling operation, to which the upper part (2b) of the member (2a) supporting the fixed cylinder (2) is also connected.

Abstract: A crushing machine includes a housing; a rotor rotatably supported in the housing; a plurality of impact tools secured circumferentially to the rotor; and an impact apron pivotally supported in the housing. The impact apron cooperates with the impact tools for crushing a material therebetween. A control device is connected to the impact apron for setting the impact apron at a selected distance from the impact tools to define a crushing gap. There is further provided a measuring device for measuring oscillations of the impact apron upon contact thereof with the impact tools during rotation of the rotor.

Abstract: A horizontal comminuting machine for reducing recyclable waste wood and other comminutable material which may have non-reducible foreign objects incorporated with it has a generally horizontal rotary drum mounting a plurality of peripherally spaced communinuting tools traveling in a continuous work contacting path. A feed works delivers material forwardly to the rotating drum in a longitudinal feed stream and to a lead anvil which, under undue operating pressure, withdraws from an operative position adjacent the path of the tools to a removed position. An anvil confining assembly on the machine frame controls the travel of the anvil. Rearwardly of the lead anvil, individual anvils are mounted to cooperate with the tools to further reduce the material.

Abstract: A cone crusher having a main frame, a crusher head interconnected with the main frame, a crusher bowl positioned adjacent to the first crusher member, and a double-acting hydraulic lift interconnected with both the main frame and the second crusher member. A force transfer member extends downward relative to the crusher bowl. The hydraulic lift includes an upper end interconnected with the main frame and a lower end interconnected with the force transfer member, thereby providing a downward clamp force on the force transfer member to compliantly clamp the crusher bowl to the main frame in an operating position. The hydraulic lift can provide an upward lift force on the force transfer member to move the second crusher member from the operating position to a clear position.

Abstract: A coffee grinding apparatus for grinding coffee beans and distributing said beans into a basket for subsequent brewing of coffee having a pair of grinding disks where one of the disks is fixed to the housing and has an annular configuration with a central opening and the other disk further removed from the rotates with the drive shaft of the grinder motor. However, the rotating disk is mounted to the shaft so that it rotates with but is free to axially slide along the drive shaft. A coffee bean feed drive is mounted over the distal end of the drive shaft and moves coffee beans from the opening at the front end of the housing through the central opening of the stationary grinding burr. The feed drive is mounted to the shaft so that it rotates with but is also free to slide axially along the shaft. An adjusting mechanism is positioned adjacent to one end of the feed drive and functions to move the feed drive relative to the drive shaft.

Abstract: A cone crusher having a lower frame assembly and upper bowl assembly is provided with hold-down cylinders arranged in pairs which are oppositely inclined to counteract a rotational impact forces imparted to the upper bowl assembly. Additionally, the hold-down cylinders are inwardly inclined toward the gyratory axis of the crusher to exert a self-centering force on the upper bowl assembly. The paired and inclined cylinders form a conical truss arrangement that reduces the need for costly maintenance, repairs, and replacement of the hold-down cylinders.

Abstract: A retention and positioning device is disclosed for a crusher having a main frame with an upper seat, and an upper frame held in releasably biased relation to the main frame and including a portion engaging the upper seat during normal operation. The retaining and positioning device includes a bracket constructed and arranged for retention upon the upper seat during operation of the crusher, the bracket defining at least one pad aperture, and at least one shock absorbing pad configured for retention in each aperture. During operation of the crusher, when the upper frame is momentarily displaced from engagement with the main frame, the return of the upper frame to the upper seat is cushioned by the at least one pad.

Abstract: The invention is a tool support for a waste processor comprising a plurality of rotating discs on which can be mounted a combination of chipper knives, swing hammers, and hog hammers. The tool support has an incline surface on which the chipper knives and hog hammers are removably mounted in a position so that a portion of the chipper knives and the hog hammers extend beyond the periphery of the discs. During rotation of the discs, if the chipper knives or hog hammers encounter an object that cannot be chipped or broken, the chipper knife and hog hammer, respectively, are forced down the mounting surface of the tool holder to a position below the periphery of the discs so that the chipper knives and hog hammers are protected from further damage by the circumference of the disc.

Abstract: The width of the clearance between a rotor with orbiting beaters and a pivotable impact plate of a machine for comminuting coal, rock, and like materials is adjusted by a computer which controls a reversible motor serving to pivot the impact plate relative to the path of orbital movement of the beaters. The computer causes the plate to pivot toward the path of the beaters when it receives a signal that the admission of material into the housing of the comminuting machine is interrupted and a converted acoustic signal denoting that the machine generates sounds which are indicative of completed evacuation of material from the housing. The direction of pivotal movement of the plate is reversed when the computer receives a series of converted acoustic signals or a single converted acoustic signal denoting that the width of the clearance has been reduced to zero, i.e., that the beaters actually strike the adjacent portion of the plate.

Abstract: A grinder pump which includes a housing; a shaft disposed within the housing having an axis; apparatus for mounting the shaft within the housing for rotational movement thereof; a moveable cutter carried on the shaft, apparatus for coupling the moveable cutter to the shaft to cause rotation of the moveable cutter upon rotation of the shaft. A stationary cutter is carried by the housing and the moveable cutter cooperates with the stationary cutter to perform cutting along respective surfaces of the moveable cutter and the stationary cutter. The respective surfaces of the stationary and moveable cutters are substantially within a plane that is substantially perpendicular to the axis; and apparatus resiliently biases the moveable cutter against the stationary cutter.

Abstract: A screening machine has a rotating screening drum for screening dirt or other material to a desired size through the screen openings, and is made so that it reduces clogging of the screen, even when rocks, dirt clods, and moist dirt is being screened. The rotating drum has interior brushes and a beater bar for keeping the material moving on the interior of the drum. A holding bin and feeding conveyor is used at the input end of the machine and is positioned to empty into an input pulverizer or shredder, that has a powered drum that will break the dirt clods up. The holding bin has a cover grate to remove excessively large rocks and the like. The output from the pulverizing roller also drops material onto a grate through which the material passes before reaching the screening drum. These grates are called "grizzly bars" and help in the classification process. The screening drum can be converted to a mixer drum by lining the screen wall with sheet metal and removing the normally used interior brushes.

Abstract: A grinder refinement mechanism for use with a conventional coffee or peanut grinder is disclosed. The grinder includes the usual screw conveyor having a rotary grinding burr attached to a forward end thereof, a stationary grinding burr connected to a wall of the grinder housing and a main spring which biases the screw conveyor toward the forward end of the grinder housing against an adjustment screw projecting through an end wall. The mechanism includes a lever arm pivotally attached to an outside surface of the end wall and an electrical solenoid connected to the arm. The usual adjustment screw is replaced with a plunger element which slidably projects both into and out of the end wall and is confined between a forward end of the screw conveyor and the arm. In one condition of the solenoid, the main spring forces the screw conveyor and plunger forwardly to hold the arm against a stop screw which thus determines the desired coarse grinding condition of the grinder burrs.

Abstract: A roller mill such as a roll press or roll jaw crusher with crushing rollers and end face plates for lateral limitation of the nip mounted with pivotal links on the side walls of a product delivery chute and triangularly spaced support springs for the face plates urging them toward the nip with wear-resistant coatings on the inner surface of the face plates with the face plates having a lower removable extension.

Abstract: A cage mill includes a housing, a disc rotatably supported within the housing, a plurality of support shafts each fixed at one end to the disc so as to form a cage, a band fixed to the other end of each of the support shafts, a plurality of ceramic pins each having a through-hole in which one of the support shafts is placed so as to support one of the ceramic pins, and a plurality of nuts each engaging with a male screw portion of each end of the support shafts for releasably fixing the support shafts and the ceramic pins to the disc and the band. The support shafts and loosely placed in the ceramic pins, respectively, so that the latter can be turned around the former when the nuts are released.

Abstract: A paper stock refiner provides low intensity treatment of pulp fiber to increase the strength characteristics of the pulp while reducing the specific energy required through increasing the number of refining surfaces. The number of refining surfaces is accomplished by providing a plurality of rotatable (30) and non-rotatable (36) refiner disks which are axially movable within a refiner, the rotatable disks being mounted on a torque transmitting section (28) of a shaft (26) and the non-rotatable disks being mounted against rotation on a plurality of supporting elements (44). In order to control the number of refiner bar crossings, the housing (12) may be opened and a desired number of refiner disks, both rotating and non-rotating, may be loaded into the refining chamber (16) on the shaft and the support elements, respectively.

Abstract: A domestic ice shaver comprises a box-like base frame unit having a top surface beyond which a drive shaft rotated by a built-in motor protrudes, a shaver case unit mounted on the base frame unit and having a shaved ice piece discharge port to which a shaving blade faces, a rotary blade unit fixed to the upper end of the drive shaft within the shaver case unit and having, on its top, a cylindrical hopper, and a cover unit mounted to the shaver case unit to cover an upper portion thereof and having a central openable lid. There is provided on the outer surface of the shaver case unit a shaving blade block detachably disposed rearwardly of the shaved ice piece discharged port. The shaving blade block has a front edge portion mounted with the shaving blade confronting the shaved ice piece discharge port.

Abstract: A jaw crusher has converging and opposed jaws defining a space for passage of material to be crushed. An improved design for supporting the jaws in floating relation on a frame structure of the crusher includes: upper and lower elongated resilient members connected with the frame structure and upper and lower reaction members connected to each jaw for respective interaction with the elongated resilient members, the upper and lower reaction members being substantially diametrically opposed to each other for permitting oscillatory movement of the jaws while at the same time limiting travel of the jaws in all directions on the frame structure. The improved jaw with upper and lower reaction members as described above facilitates drop-in assembly of the jaws in the crusher.

Abstract: A jaw crusher is disclosed wherein opposed jaws converge downwardly to form a passage for material to be crushed, the jaws being supported on a frame structure by resilient floating mounts connected in series with each other and between the respective jaws and the frame structure. Each resilient floating mount preferably includes a wheel and pneumatic tire arranged coaxially within a relatively larger cylindrical track. Balanced eccentric masses are supported on each jaw for uniformly driving them in oscillatory vibration. The jaws are configured so that when lower portions of the jaws are generally parallel in order to achieve fine crushing, the upper jaw portions form a converging angle of approximately seven to sixteen degrees in order to achieve enhanced crushing particularly in combination with the balanced eccentric masses and the series connected resilient floating mounts.

Abstract: Apparatus for comminuting scrap in ribbon or strip form from, for example, steel plate into short sections attains a reduced-noise comminuting arrangement of simple construction, and also processes materials of different thicknesses without any readjustment, the apparatus having with two rotors which are driven synchronously in opposite directions and each having knives which project at the periphery of the rotors and which, when they met, carry out a shearing cut, and moreover with two mutually meshing toothed wheels for driving the knife rotors mounted on shafts so that they cannot twist and with a fixed distance between axes, one of the toothed wheels being seated on the shaft of the first rotor and driving this shaft while the other is freely rotatably mounted on the shaft belonging to the second rotor and drives this shaft over a driving mechanism elastically supported in the direction of rotation.

Abstract: A remote operable cone crusher employing all-hydraulic adjust and clamping systems features a hydraulic "intensifier" for the clamp cylinders and an auxiliary pressure maintaining circuit for the adjust cylinders in order to overcome "creep" under load.

Abstract: An apparatus for fine grinding of, in particular, material samples for laboratory experiments. The apparatus has a fixed grinding member and a rotating grinding member, which are disposed in such a way that each has a surface facing the other and slightly spaced therefrom, with the material which is to be ground being received and passed between these surfaces. The problem faced by such an apparatus is that samples have to be introduced and discharged one by one, so that the work is carried out as a batch process. It is also difficult to accurately adjust the grinding degree. In order to solve these problems, and to carry out a continuous grinding of hard and very hard materials, as well as to be able to adjust the grain size of the grinding, the invention proposal is that the grinding members on the one hand be a fixed cylindrical body and on the other hand be a roller body which rotates coaxially therein.

Abstract: The crusher of this invention has a conical crushing head that gyrates in an annular lower frame member. An upper frame member that seats on the lower frame member in a normal operative position comprises a bowl that cooperates with the head to define a crushing gap. Upright, circumferentially spaced double-acting hydraulic jacks are connected between the lower frame member and a tie ring surrounding it; and upright, circumferentially spaced tie rods connect the tie ring with the upper frame member. Preferably the piston rods of the jacks project downward. The upper jack chambers are normally communicated with a fluid pressure system that maintains fluid in them at a predetermined pressure and comprises an accumulator charged by a hydraulic pump that is controlled by a pressure responsive switch. A relief valve near each jack vents fluid from its upper chamber to its lower one when pressure in said upper chamber exceeds said predetermined value by a predetermined amount, as when tramp iron lifts the bowl.

Abstract: An improved roller mill construction. Material to be milled or ground such is fed through a discharge opening in a hopper to a pair of cooperating rolls that are mounted within a housing. The discharge opening is enclosed by a sliding gate which is biased to the closed position and can be opened by manual operation of a pull rod. An adjustable setting mechanism is incorporated with the pull rod and enables the gate to be held at an infinite number of open positions. To adjust the spacing between the rolls, the shaft of one of the rolls is journalled within bearing assemblies that are mounted for sliding movement with respect to the housing. A rod is secured to each slidable bearing assembly and is threadedly connected to a shaft which carries a sprocket. By driving the sprockets in unison, the shafts will be rotated to thereby move the bearing assemblies and adjust the spacing between the rolls.

Abstract: A bowl mill pulverizer includes a mill housing supported on and extending upwardly from a foundation. A milling bowl is supported within the housing for rotation about a vertical axis. A frame is located over the bowl with arms extending downwardly from the frame and rotatably supporting grinding rolls positioned within the bowl. Upwardly extending pull rods are secured at their upper ends to the frame and at their lower ends to the foundation. The pull rods press the grinding rolls downwardly against the bowl. The pull rods are disposed at an angle to the vertical and slope outwardly and downwardly toward the foundation.

Abstract: A vertical roller mill includes a grinding table positioned for rotation around a vertical axis and two upright grinding rollers resting on their peripheral grinding surfaces on the grinding table for grinding material thereon. Each of the grinding rollers is rotatably mounted on a respective fixed horizontal shaft connected at one end to a common, central frame and at the other end to a draw bar. Preferably, the draw bar is regulated by a hydraulic cylinder secured in a bracket which is anchored in the mill foundation.

Abstract: In a crusher having a gyratory conical crushing head that cooperates with an annular bowl, the bowl has a threaded connection with a frame member, to be adjustable up and down by rotation. A clamping ring, acting like a jam nut, also has a threaded connection with the frame member and is so connected with the bowl as to be constrained to rotate with it; but normally the bowl and clamping ring are biased towards one another under clamping force, to prevent bowl rotation. To release the bowl for rotation, pressurized air is injected between the bowl and the clamping ring, acting directly on them to overcome clamping force and being introduced via the helical passage defined by the threaded connection between clamping ring and frame member. Seals between the bowl and clamping ring, and between the bowl and frame member, prevent escape of the air.

Abstract: A pressure relief system for a gyratory crusher is disclosed in which two separate but interacting fluid assemblies function, respectively, to adjust the operating position of the crusher cone of the gyratory crusher and to control the pressure above which the pressure relief system is activated. The system operates to relieve excessive pressure caused by the introduction of uncrushable foreign matter into the crushing chamber and to facilitate the elimination of such matter from the crusher.

Abstract: A hydraulic accumulator particularly useful in connection with gyratory crushers of the type in which the crusher head and shaft are hydraulically supported so that when the crusher head encounters uncrushable material such as "tramp iron" the crusher head can move down to pass the tramp iron, causing at least some of the hydraulic fluid supporting the crusher shaft to be ejected to a hydraulic accumulator. A plurality of gyrations of the crusher may occur before the tramp iron passes. The accumulator chamber which receives the hydraulic fluid ejected from beneath the crusher shaft contains a gas precharged elastic bladder. Hydraulic fluid is admitted to the accumulator chamber through a poppet valve built into the accumulator structure, which valve is normally spring biased to a closed position against its valve seat.

Abstract: This is concerned with a crusher clearing system using a plurality of hydraulic jacks disposed with relation to the adjustment ring and main frame of the crusher such that the jacks, as a unit, apply a generally vertical thrust directly between the upper main frame flange and the adjustment ring so that uncrushable material may be removed from the crushing cavity in a stalled or jammed crusher.

Abstract: A forage harvester has a cylinder type cutterhead and a plurality of feed rolls that feed crop material radially into the cutterhead over a shear bar normally positioned adjacent to the cutterhead in registry therewith. The shear bar is mounted for resilient yieldable deflection when the cutterhead strikes a foreign object to a deflected position wherein it permits the tangential expulsion of the foreign object at the shear bar.

Abstract: In a forage harvester having a rotatable cutterhead and adjacently-positioned shearbar, an upper rear feed roll is mounted above and forwardly of the shearbar for pivotal movement relative to an upper front feed roll by a pair of arms which interconnect the rolls. A tensioning assembly is coupled to each of the arms. An actuatable latching mechanism is connecting to the tensioning assembly and movable to a first position for placing the tensioning assembly in a first condition in which the rear feed roll is biased toward a lower operative position adjacent the cutterhead and shearbar.

Abstract: This is concerned with a crusher clearing system using a plurality of hydraulic jacks disposed with relation to the adjustment ring and main frame of the crusher such that the jacks, as a unit, apply a generally vertical thrust directly between the upper main frame flange and the adjustment ring so that uncrushable material may be removed from the crushing cavity in a stalled or jammed crusher. The jacks are arranged in pairs and the jacks are selectively energized so that the adjustment ring will tilt relative the main frame flange.

Abstract: This is concerned with a crusher clearing system using a plurality of hydraulic jacks disposed with relation to the adjustment ring and main frame of the crusher such that the jacks, as a unit, apply a generally vertical thrust directly between the upper main frame flange and the adjustment ring so that uncrushable material may be removed from the crushing cavity in a stalled or jammed crusher.

Abstract: This is concerned with a so-called gyratory crusher bowl clamping system in which a screw-threaded bowl is rotated for adjustment and a so-called rocker arm pressure-off clamping system is provided which avoids dirt, dust and sealing problems. The crusher includes a frame which is greatly simplified, but has increased strength and rigidity as well as a support for the crushing head that greatly simplifies manufacturing and machining problems.

Abstract: A screening machine has a rotating screening drum for screening dirt or other material to a desired size through the screen openings, and is made so that it reduces clogging of the screen, even when rocks, dirt clods, and moist dirt is being screened. The rotating drum has interior brushes and a beater bar for keeping the material moving on the interior of the drum. A holding bin and feeding conveyor is used at the input end of the machine and is positioned to empty into an input pulverizer or shredder, that has a powered drum that will break the dirt clods up. The holding bin has a cover grate to remove excessively large rocks and the like. The output from the pulverizing roller also drops material onto a grate through which the material passes before reaching the screening drum. These grates are called "grizzly bars" and help in the classification process. The screening drum can be converted to a mixer drum by lining the screen wall with sheet metal and removing the normally used interior brushes.