Abstract: The present invention relates to a food waste disposer that is configured to allow an opening and closing plate adapted to open and close a drain pipe to be open only when a motor operates, so that normally, the drain pipe from which water is discharged is closed, thereby preventing bad smell and sewage from flowing backward from the drain pipe, to allow a propeller adapted to forcedly discharge the water from a casing to the drain pipe to be driven reversely and to thus close the opening and closing plate if the motor is driven reversely, so that gears inside a pulverizing part rotate to circulate the water in the casing and thus to automatically clean the casing, without any separation of the casing, and to allow a magnetic material to be built in a hopper so that if iron introduced into the hopper is sensed by sensors, the pulverizing part stops working and is thus prevented from being damaged by the iron.

Abstract: The invention relates to a rock processing plant (10) having a machine frame (13), which supports a screening unit (20), wherein the screening unit (20) has at least two screen decks (21, 22), which are arranged offset from each other in the vertical direction (H) of the rock processing plant (10), wherein the screen decks (21, 22) each have a discharge area (A1, A2), wherein a transport device (15) is connected to the screening unit (22) in the conveying direction, wherein the transport device (15) has a feed area (15.1) and a discharge area (15.2), wherein a transport means, in particular an endless circulating conveyor belt (15.3), extends in a transport direction (D) at least partially between the feed area (15.1) and the discharge area (15.2), wherein the transport device (15) is attached to the machine frame (13) by means of a mechanical actuator (31), wherein the mechanical actuator (31) can be used to move the feed area (15.

Abstract: A screening device for separating dry granular material into a fine fraction and a coarse fraction is provided. The screening device includes a drum screen defined by an open rotatable frame, which frame defines a circumferential wall, and a sheet-like screen arranged over the circumferential wall of the frame. The screening device also includes a driving device by means of which the drum screen is rotatably driven, a feed opening at a short end of the drum screen and a discharge opening at the opposite short end of the drum screen. The screening device further includes a vibration device which rotates along with the drum screen, which vibration device includes one or more vibrating elements mounted to the drum screen, which set the drum screen vibrating in use. A method for separating dry granular material into a fine fraction and a coarse fraction is also provided.

Abstract: A screening machine for superfine powder. The screening machine includes a casing, a screen drum, a funnel, a negative pressure chamber, a rotary air spray pipe, a drive motor, a blast pipe, and a feed pipe. The screen drum is disposed in the middle part of the inner cavity of the casing. The funnel is disposed beneath the casing. The opening of the screen drum is arranged on the bottom of the screen drum and communicates with the upper opening of the funnel. The inner cavity of the casing communicates with the external induced draft fan via the negative pressure chamber disposed on the upper part of the casing. The rotary air spray pipe is arranged in the space between the screen drum and the casing. The middle part of the transverse pipe is connected via a transmission with the drive motor.

Abstract: Foundries utilize quartz foundry sand and generate waste foundry sand as a by-product. Frac sand exists with other components within the waste foundry sand. A configuration of machinery processing a flow of quartz waste foundry sand into frac sand includes a screening device separating the flow and providing the frac sand.

Abstract: The invention relates to a device (1) for sifting granular material into at least three fractions, comprising at least one static sifter (2) forming a first sifting stage and at least one dynamic sifter (3) forming a second sifting stage, wherein the static sifter (2) has several impact installations and conducting installations (8, 9) arranged one below the other in the manner of stairs in a sifter housing (4) having a first material inlet (5), a sifting gas inlet (6), and a coarse material outlet (7), wherein the dynamic sifter (3) is designed as a rod basket sifter having a rotary rod basket (12) and has a sifter housing (11) having at least one medium material outlet (17) and one fine material outlet (18).

Abstract: A screening assembly for separating components of a material includes at least one roll screener with a plurality of roll elements that are spaced apart from each other generally in a first direction to define a plurality of first openings therebetween. The roll elements are operable to rotate to separate the material into a first component and second component. The first component is conveyed generally in the first direction, and the second component moves away from the first component through the first openings. Furthermore, the screening assembly includes at least one vibrational screener with a vibrating member that defines a plurality of second openings. The vibrating member is operable to receive the second component and to vibrate to separate the second component into a first sub-component and a second sub-component. The second sub-component moves away from the first sub-component through the second openings.

Abstract: Methods and an apparatuses are provided for sorting particles according to the shape thereof in at least two classification stages in a chronological or spatial sequence.

Abstract: A trommel screen machine including at least one revolving screening drum, at least one drive for the screening drum, a feeding hopper as well as at least one collecting device, such as a transport device, for collecting and transporting the screened good. In front of and/or on the trommel screen machine at least one disc screen is arranged which screens a defined grain, in particular oversized particles.

Abstract: A separator system for separating first material from second material, in one aspect for separating gumbo from drilling fluid, a combination of the first material and second material introducible to the separator system, the separator system having a screen conveyor having a plurality of spaced-apart rods or shafts, a plurality of wires, for each pair of adjacent rods or shafts of the plurality of spaced-apart rods or shafts a wire of the plurality of wires wrapped partially, once, or more around the rods of the pairs of spaced-apart rods, and portions of the rods and portions of the wires defining openings through which the first material is passable and through which the second material is not passable so that the screen conveyor separates the first material from the second material.

Abstract: A shale shaker having a basket for holding screen assembly apparatus, screen assembly apparatus for treating fluid introduced to the shale shaker, a roller bed assembly secured above and/or to the basket above the screen assembly apparatus, the roller bed assembly having a plurality of spaced-apart rotatable rollers, the fluid initially introduced to the shale shaker onto the roller bed assembly. The shale shaker wherein the fluid is drilling fluid with large undesirable solids therein, said large undesirable solids separable from the drilling fluid by the roller bed assembly.

Abstract: A mobile screening unit for screening bulk material. The screening unit comprises a first screener, a second screener, and an elongated mobile support frame having a longitudinal axis. The first screener is mounted to the support frame and extends longitudinally thereon. The first screener has an inlet for receiving the bulk material containing large-sized, medium-sized, and small-sized particles. The first screener also has a first outlet for releasing large-sized particles and a second outlet for releasing medium-sized and small-sized particles. The first screener is used for screening the bulk material along a first direction substantially parallel to the longitudinal axis of the support frame. The second screener is mounted to the support frame and extends longitudinally thereon.

Abstract: A novel separator housed within a shell for the separations of solid and liquid components from a slurry. The separator has two stages, a first static screen and rotating brush assembly section and a second stage, with a screen and a roller press and brush assembly. The slurry is pumped into the separator through a weir box. The slurry flows into the first stage and most of the liquid component flows into a sump located below the two stages. The solid component is then directed into the second stage where the rollers squeeze remaining liquids from the solid component. The brushes then direct the remaining solid component of the slurry into a solids discharge area.

Abstract: A sea sand desalination method includes: pumping sea sand to a first fresh water wash and a vibration sifter at the same time to purge foreign matter, salt, and coarse grains; blending in measuring tank at a sea sand-water ratio of 0.6:1; pouring the mixture into a heating tank and heating to boiling point; and sending it to a filtration machine for straining. The filtration machine filters the sea sand with hot water at its front section and a second fresh water wash at its rear section, and then discharges the hot water. The sea sand in the filtration machine is thereafter conveyed into a second vibration sifter and a third fresh water wash for purging. The post-wash fresh water after above-mentioned wash flows into a first and second waste water pool, respectively. Finally, the fully depurated sea sand is conveyed via a water wheel to a sand dumping site.

Abstract: A process and apparatus for processing polyvinylacetate and other similar ingredients of a gum base or chewing gum product are disclosed. The ingredient materials are separated into individual pieces by a lump breaker and conveyed through a pneumatic conveying system to a cyclone receiver and holding bin. A volumetric feeder feeds the material into a side feeder which in turn introduces and feeds the material to the main continuous extruder used for making the final gum base or gum product. A unique adapter connects the side feeder to the main extruder which allows repair and/or modification of the side feeder without separating it from the main extruder.

Abstract: A method of manufacturing a large stationary, aggregate processing screening tower by fabricating weldment modules and preassembling them with aggregate processing equipment internal within the weldment modules, transporting the preassembled weldment modules to a field work site where the tower is to be erected on a foundation, aligning the modules and stacking the modules in layers and then bolting adjacent modules together. The stacked-up modules are adapted to receive aggregate at the top uppermost module and permit the aggregate to be processed by screening, blending, and sizing into aggregate product as it moves downwardly by gravity through the modules and their processing equipment for final collection of the product at the ground level. A large stationary, aggregate processing screening tower has weldment modules preassembled with aggregate processing equipment internal within the modules.

Abstract: A method of manufacturing a large stationary, aggregate processing screening tower by fabricating weldment modules and preassembling them with aggregate processing equipment internal within the weldment modules, transporting the preassembled weldment modules to a field work site where the tower is to be erected on a foundation, aligning the modules and stacking the modules in layers and then bolting adjacent modules together. A large stationary, aggregate processing screening tower has weldment modules preassembled with aggregate processing equipment internal within the modules. The preassembled modules are stacked up on one another and secured together and can receive aggregate product at the top module and the product is processed by screening and sizing as it moves downwardly by gravity through the modules and their processing equipment for final clarification and collection of the product.

Abstract: An Internet download enhancement system for downloading a file comprising an application arranged to initiate a download process and receive a downloaded file over one of a narrow band download path and a broadband broadcast download path, wherein modules in communication with the application are arranged to provide selectable download options among the available download paths. The selectable download options are based at least on an unused bandwidth of one or more of the download paths, thereby enabling the input of a selected download option. The modules are arranged in response to the input to cause a download process to download files over one of the narrow band download path and the broadband broadcast download path and then to output the downloaded file to application.

Abstract: A multi-mass filter for separating particles of a multi-species plasma includes a chamber, which defines an axis. A radial electric field is crossed with a magnetic field (E×B) to move the particles of different mass (M1, M2 and M3) on respective trajectories into respective first, second and third regions. Specifically, particles M1 are confined in the first region, while both particles M3 and M2 are ejected from the first region into the second region and only the particles M3 are ejected from the second region into the third region.

Abstract: A multi-mass filter for separating particles according to their mass-charge ratio includes a chamber for receiving a multi-species plasma that includes particles therein having different mass-charge ratios (with M1<M2<M3). Inside the chamber, which defines an axis, a radial electric field is crossed with a magnetic field (E≦B) to move the particles (M1, M2 and M3) on respective trajectories into respective first, second and third regions. For one embodiment, the filter is configured so that az2Bz is held constant in the expression for cut-off mass, Mcz=eaz2Bz2/(8Vctr). For this embodiment, only the heavier particles M3 are ejected into the third region (M3>Mc3) and only the intermediate particles M2 are ejected into the second region (M2>Mc2). In another embodiment, the radial electrical field is increased outwardly from the axis to a radial distance a2 (r2) at a first rate.

Abstract: An apparatus for separating components of free-flowing material contained in a cotton-like, mat-like carrier, includes an air accelerator providing an accelerated air stream for tearing apart the carrier to form flakes. Positioned downstream of the air accelerator is a separation deck which includes a screen surface and a trough. A vibratory unit is associated to the separation deck for oscillation thereof, thereby realizing a separation of the components.

Abstract: Test methods are provided for determining the amount of contaminants in a carbon black sample. The test procedures include screening a known amount of carbon black to separate larger particles in the sample from smaller particles. The sample and/or separated larger particles are treated with a separating force to disperse larger agglomerates of carbon black into smaller aggregates of carbon black and to separate contaminants from carbon black aggregates. The treated sample or separated larger particles can then be screened to again separate larger particles from smaller particles. The separating force may be a water wash stream which contacts the sample or separated larger particles at a pressure of from about 15 psi to about 35 psi. The separating force may instead or additionally be generated by a dispersing agent which can be combined with the sample or separated larger particles in an amount or concentration sufficient to disperse larger agglomerates of carbon black into smaller carbon black aggregates.

Abstract: A system for processing wastewood. The system may be mounted on a towable chassis. The wastewood is received at one end of the system and metal contaminants are removed from the wastewood. The wastewood is then separated according to size wherein a first size of wastewood is further processed by the system and a second size is removed from the system for subsequent re-processing. Unwanted paper and plastic contaminants are removed from the wastewood, and the wastewood of the first size is subjected to a further separating step wherein it is again separated according to size into usable end products.

Abstract: A method for screening fibrous stock slurry having a rotor impeller and a screen, in which accepts quality and throughput may be adjusted without stopping the screening process by relative displacement of the clearance between the rotor and the screen plate. In one version, this relative displacement is accomplished by axial displacement of frusto-conical portions of the bladed rotor and screen. The relative axial displacement changes the degree of pulp disturbance in a primary screening zone, thus causing throughput and accepts quality to change accordingly. The primary screening zone may be between the rotor impeller and the screen, or it may be on the other side of the screen, in which case the blades on the screen are designed to permit a portion of the pulp slurry to flow through the screen into a region between the rotor impeller and the screen.

Abstract: A waste compaction and liquid extraction system is provided. The system includes a tank for containing liquid and solids. The tank has an input port for receiving liquid, and an output port for discharging a mixture of liquid and solids. A rotary disc impeller is mounted in the tank for grinding the solids to form the mixture. The impeller has a rotating blade with inclined and bevelled cutting members. Each cutting member has a helical leading edge. The tank conducts the mixture to the output port. A stationary helical screw is horizontally mounted to the output port of the tank. The screw has a receiving end adjacent to the output port and a discharge end. The screw has a tapered shaft that increases in diameter towards the discharge end. A sieve is provided having a cylindrical sieve surface surrounding the screw. The liquid drains through the sieve surface. The sieve is rotatably mounted to the output port of the tank.

Abstract: A screen apparatus for paper making capable of substantially fully recovering fibers from a paper feedstock which has been subject to a pulper and discharging a residue while dehydrating it. A paper feedstock is subject to two-stage maceration and two-stage screening through first and second screen chambers each provided therein with a screen and macerating blade combination. The screens are each cleaned by the macerating blades, so that fiber pieces contained in the paper feedstock are substantially fully recovered with high efficiency and a residue is discharged while being substantially free of fiber pieces and substantially dehydrated.

Abstract: A composite type screen includes a machine main body divided into a first structural part in which a first processing chamber is contained and a second structural part in which a second processing chamber is contained and a screen plate is interposed between the surfaces of the first structural part and the second structural part. Since a first rotary shaft having an impeller mounted thereto is disposed in the first processing chamber and a second rotary shaft having a rotor mounted thereto is disposed in the secondary processing chamber, the first rotary shaft does not pass through the first screen member. As a result, a seal member for the first screen member is not needed, whereby the number of parts is reduced and moreover a paper material can pass through the entire region of the first screen member and the area thereof through which the paper material passes is increased, so that a foreign substance removing efficiency can be improved.

Abstract: Apparatus and method are disclosed for separating and recovering the solid particle components of a waste aggregate using screening and air separation mechanisms. Such an aggregate could be log yard waste comprising soil, wood and mineral particles. The aggregate is first mechanically screened to produce a product of fine particles (the soil) and a plurality of sized streams, each comprised of similarly sized particles of different densities (the wood and mineral particles). The sized streams are then separately but simultaneously introduced into an air separation device which comprises an upstanding funnel-like member forming an upwardly converging passage through which air is flowing. The smallest sized stream of particles is fed into the passage at the lowest elevation, where a separation of light and heavier density particles occurs, light particles moving upwards with the air, heavier falling downwards.

Abstract: A mobile screening apparatus includes a horizontal rotary drum preferably fed by underflow from a prescreening device that is reversible endless belt of screening grizzly bars. The belt reverses for expelling oversize material caught between bars. Force needed to turn the drum is monitored, as a way of controlling drum feeding by the prescreening device, for preventing protracted over-filling of the drum. The screening drum includes an outer peripheral cage of longitudinal bars, at least some of which preferably are movably mounted. A set of wires is circumferentially wrapped about the bar cage, with sufficient flexibility to permit the wires to locally elastically flex away from the bars sufficient to pass slightly oversize material and facilitate cleaning of debris lodged in spaces among the bars and wires. Brushes help dislodge lodged debris.

Abstract: The system includes a variable speed motor (13) which controls the operation of a disk screen (14) which is part of a gyratory screen/disk screening system for wood chips and the like. Wood chips are fed at a variable rate to a storage bin (34), which includes a level sensor (36). The level sensor (36) controls the operation of a star feeder (42) to maintain the level of providing a varying amount of input material to the upstream end of the gyratory screen (12). The speed of the motor (46) driving the star feeder valve (42) is used to develop a control signal for the disk screen motor (13), to ensure a uniform flow rate off the disk screen.

Abstract: The present invention concerns a screening method and apparatus for sorting wood chips into three categories, namely, accept chips, overthick and/or overlong chips requiring further processing and reject fines. The chips are fed onto a disc screen. A major portion of fines and a portion of accepts fall by gravity through clearances between the discs (1) of the disc screen and a portion of the chips travels over the disc screen. Screening of chips on the disc screen is cut short before all accept chips have fallen through the disc screen. Chips travelling over the discharge end of the disc screen are routed onto a roller screen (10), whereby the remaining portion of accepts can fall by gravity through the roller screen while overthick and/or overlong chunky chips are conveyed over the discharge end of the roller screen.

Abstract: A material separating apparatus and method which comprises a frame of a pair of spaced apart generally downwardly sloping, upper and lower vibratory screening decks within the frame, the upper screening deck comprising a plurality of comb-like elements, which are generally parallel, straight finger elements removably extending from a transverse bracket support and onto which finger elements a feed material is discharged to be separated into a coarse material and a finer material. A lower deck comprises a plurality of comb-like elements having a plurality of transverse cross members and a plurality of downwardly extending, small diameter finger elements extending therefrom, the finger elements being of greater plurality and of smaller diameter than the finger elements of the upper screening assembly, and downwardly angled so as to provide for the separating and sizing of feed material falling from the upper screening deck onto the lower screening deck.

Abstract: A pipeline padding machine for use with a motorized carrier is mounted on a flat bed trailer adapted to be hitched to the carrier. Collector apparatus mounted beneath the screening apparatus receives the earth from a discharge at the bottom of the screening apparatus and conveys it to its discharge end which is located laterally of the carrier-trailer when the screening apparatus is in a transverse operational mode. A delivery apparatus pivotally mounted at a receiving end beneath the discharge end of the collector apparatus may in turn receive the earth discharged for delivery at greater distances from the screening apparatus. This delivery apparatus may be supported at its discharge end from the carrier or the trailer so that its discharge end may be located laterally of the carrier-trailer at a selected distance from the carrier-trailer within a variable range of distances.

Abstract: A method and apparatus for removing from soil particles within a predetermined size range, comprises a movable frame, and a digger attached thereto to excavate soil as the frame is moved. A first separater to which the excavated soil passes allows material of less than a first predetermined size to pass through and discards material of size greater than said first predetermined size. A second separater is adapted to retain material of size greater than a minimum of said predetermined size range and to discard material of size less than said minimum. The retained material is stored.

Abstract: A wood chip screen system which includes a gyratory screen apparatus (10) and a disk screen (12). The gyratory system apparatus includes a top screen element (14) and a lower screen (16). The inflow end of the disk screen (12) is immediately adjacent the outflow end of the top screen element (14), while the lower screen element (16) underlies the disk screen (12) for a substantial distance. The size of the openings in the top screen element (14) may be changed by the operator to optimize the operation of the system. The openings in top screen element (14) may also vary along its length. The system produces chips within the acceptable size range, chips which are below the acceptable size range (pin chips and fines), and over-thick chips, which are subsequently typically transmitted to a chip size reduction apparatus such as a slicer.

Abstract: A two-stage procedure is disclosed for sorting wood chips. The chips are directed to a gyratory screen in the first stage and to a disc screen in the second stage. The chip flow is divided in the first stage into four fractions of which the first fraction contains mainly oversized chips and is directed to a pin chipper, from which it emerges as suitable-sized chips and is directed back to the gyratory screen of the first stage. The second fraction contains acceptable sized chips and most of the overthick chips and is directed to the second or thickness screening stage. The third fraction consists mainly of acceptable chips and is directed to a pulping process, while the fourth fraction consists mainly of fine particles and is directed to a burning station.

Abstract: A system and process for sizing wood chips to provide a flow of wood chips which are acceptable for feeding to a digester of a pulping system. A flow management screen station is provided which divides an incoming unacceptable flow into two fractional flows, neither of which is acceptable for feeding to the digester. One of the output flows from the flow management screen is concentrated in oversized and overthick chips compared to the incoming flow. The other output flow is concentrated in undersized chips and particles compared to the incoming flow. The output flows from the flow management screen are then fed to second and third screening stations which separate "overs" from the respective flows to provide acceptable flows to the digester.

Abstract: A system for processing wastewood. The system may be mounted on a towable chassis. The wastewood is received at one end of the system and metal contaminants are removed from the wastewood. The wastewood is then separated according to size wherein a first size of wastewood is further processed by the system and a second size is removed from the system for subsequent re-processing. Unwanted paper and plastic contaminants are removed from the wastewood, and the wastewood of the first size is subjected to a further separating step wherein it is again separated according to size into usable end products.

Abstract: A wood chip sizing apparatus, based on the thickness dimension, which includes a gyratory screen system (16) comprising three separate screens (18, 22, 26) which produces a total of four fractions, one fraction (20) comprising substantially all overthick chips, another fraction (24) comprising both overthick chips and accepts, another fraction (28) comprising substantially all accepts, and another fraction (30) comprising substantially all unders. Fraction (20) is moved directly to a chip slicer (52) which reduces the size of substantially all the chips to accepts. Fraction (24) is directed to a second screening station (42) which separates fraction (24) into two further fractions (44 and 46), one of which (44) comprises overthick chips, and the other of which (46) comprises accepts. The overthick chips (fraction 44) are applied to the chip slicer (52).

Abstract: A riprap separation apparatus and method which riprap apparatus comprises a frame having an open space within the frame, an upper grizzly section composed of a tiltable upper grizzly section having a plurality of fixed, spaced apart bar elements so that riprap material discharged onto the grizzly section is separated into a large size material and a smaller size material which passes through the bar elements and a downwardly angled discharge chute to receive the larger size material and to deposit the large size material to one side of the apparatus. The apparatus includes a support section disposed to be within an earthen sloped access ramp to provide support for the apparatus and with the ramp to provide for the movement of vehicles to discharge riprap material into the grizzly section.

Abstract: In an apparatus for dividing a suspension of fibrous cellulose pulp into a plurality of portions in a closed housing having multiple inlets and outlets, the present invention suggests that the closed housing is divided into two chambers, each provided with at least one inlet and at least one outlet, and that in the first chamber a separating device is arranged, rotating at high speed, to separate undesired parts from the suspension via an outlet, the inlet of the second chamber comprising an opening arranged between the first chamber and the second chamber to transfer the suspension which has been substantially freed from undesired parts. Furthermore in the second chamber a rotor provided with blades is arranged, the rotor being connected to the separating device in the first chamber, the separating device and rotor being driven by a common shaft, and a screening device cooperating with the rotor, to divide the suspension into different fractions which leave the second chamber by individual outlets.

Abstract: There are disclosed two embodiments of a pipeline padding machine which comprises a first rearwardly inclined conveyor mounted on a vehicle adapted to be moved along a ditch in which a pipeline has been laid and over a row of spoil which has been removed from the ditch, and a scoop on the forward end of the first conveyor for removing a layer of the spoil and deliverying it onto the first conveyor as the vehicle moves over the row of spoil. The first conveyor is arranged to move the spoil rearwardly and thus onto a second screen at its rearward end having means for moving that portion of the spoil which does not pass it in a rearward direction. A second conveyor mounted on the vehicle beneath the screen for receiving spoil which passes it and moving the spoil toward one end of the second conveyor, and a third conveyor is mounted on the vehicle for receiving spoil from the end of the second conveyor and extending laterally of the vehicle for moving that spoil into the ditch and over the pipeline.

Abstract: In an apparatus for dividing a suspension of fibrous cellulose pulp into a plurality of portions, a closed housing is provided which is divided into two chambers, each provided with at least one inlet and outlet, and in the first chamber a separating device is arranged, rotating at high speed, to separate undesired parts from the suspension via an outlet. An inlet to the second chamber is provided in the form of an opening between the first chamber and the second chamber for transferring the suspension which has been substantially freed from undesired parts. Furthermore, in the second chamber a cylindrical screening device is arranged, connected to the separating device in the first chamber, the separating device and screening device being driven by a common shaft. A support provided with blades cooperates with the screening means to divide the suspension into different fractions which leave the second chamber by individual outlets.

Abstract: A wood chip classifier and classification system in which chips are separated into a plurality of fractions according to chip size in an apparatus having an automatically adjustable hole spacing for first removing from a sample chips in the fraction smallest in size, and subsequently removing therefrom fractions containing chips of progressively larger size. A particularly suitable apparatus includes a rotating drum for receiving chips on the inside thereof, with the perimeter of the drum being formed from a plurality of spaced rods, and the spacing between the rods being adjustable.

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 debris separation system including a rock grizzly having relieved rails for inhibiting rock hang up, a vibrating grizzly having rods of alternating height for aligning limbs with the rod openings, a fines separating screen, and a rotary air separator for separating small rock and wood chips. The system is considered unique in its ability to distinguish rock and wood (log debris) by their physical characteristics. The vibrating grizzly rejects large rock while accepting long narrow limbs, and the rotary air separator separates rock and wood of the same general size and shape by reason of mass differential i.e. the more dense rock is less effected by air suction then the less dense wood.

Abstract: A combine harvester, having threshing and separating means for threshing and separating crop material and a cleaning apparatus disposed to receive threshed and separated grain from said treshing and separating means and being operable to clean unwanted residue from the threshed and separated grain is disclosed wherein the cleaning apparatus, including at least a pair of cleaning sieves arranged to be oscillated generally back-and-forth for moving threshed and separated grain therealong while permitting the passage of cleaned grain therethrough, and further including a cleaning fan operable to direct a cleaning air blast to the cleaning sieves for urging unwanted residue to the threshed and separated grain into an airborne state for discharge from the combine harvester, is provided with an agitator positioned between the cleaning sieves.

Abstract: A pipeline padding vehicle for supplying earth of a fine consistency to cover and pad a pipeline disposed in a trench has a longitudinal conveyor, a vibrating screen to receive earth from the conveyor, and a padding material discharge conveyor beneath the screen to receive material therefrom mounted to pivot about a vertical axis from a position in which it is longitudinally aligned with the vehicle frame to a position transverse of the frame. A sub-frame mounts the vibrating screen and discharge conveyor on the vehicle for fore and aft swinging movement about a generally horizontal axis transverse to the longitudinal extent of the vehicle frame.

Abstract: A padding machine is provided for angularly variable attachment to a mobile ground carrier having a hopper into which soil is placed, a vibratory feeder and screen receiving soil from the hopper, a chute receiving screened soil from the vibratory screen and feeder to deliver the same as padding on a pipeline within a ditch and a power source driving he vibratory feeder and screen.

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.