Abstract: Sieve screen level sensing in a filtering apparatus (10) for filtering fine powder material (M) which includes a sieve (12) having a material inlet (24) and a material outlet (26), and a sieve screen (14) is disposed within the sieve (12) between the material inlet (24) and outlet (26) such that the material (M) must pass through the sieve screen (14) to enter the material outlet (26) and thereby exit the sieve (12). An input valve (22) controls the flow of material (M) into the sieve (12) through the material inlet (24). A sieve screen level sensor assembly (20) senses a level of material (M) accumulated upon the sieve screen (14), and issues a level sense signal (66) indicative of that level. A programmable logic controller (60) receives the level sense signal (66) and controls the inlet valve (22) dependent at least in part thereon to thereby control the flow of material (M) into the material inlet (24).

Abstract: A screening system designed to provide separation of multiple fractions of New Screens Fines. News Screens Fines (“NSF”) contain a mix of compressed, unmarketable recyclables that are generally less than four inches in size created as a by-product of current Material Recovery Facility (MRF) plant designs used to process single-stream recyclables. The NSF separation system uses a series of primary and secondary classification apparatus to separate materials into marketable products that meet legislative requirements. A series of screens, conveyors and air moving systems are designed to separate waste from fractions of glass, plastic and ferrous metals that can be sold.

Abstract: An apparatus for sorting particles of a material such as concrete. The apparatus includes a frame and a drive assembly attached to the frame to induce gyroscopic vibratory motion of the frame in a selected rotational direction. Adjacent first and second inclined screens are affixed to the frame. The screens slope downwardly away from an intermediate ridge at different, respective first and second angles. Material dropped onto the intermediate ridge separates into a first stream which passes along the first inclined screen and a second stream which passes along the second inclined screen. The first and second angles are selected in relation to the vibratory motion of the frame so that the first and second streams each move at substantially the same velocity. A diverter member at the intermediate ridge aids in the transition of material flow along the respective screens.

Abstract: In a device for collecting and re-cycling articles sent toward feeding channels, a selecting member is situated downstream of a station where the articles are accumulated, for receiving, in a predetermined way, the articles from the accumulation station. The selecting member selects and holds complying articles, separating them from fragments and from powders associated thereto. A linear conveyor member, situated downstream of the selecting member, receives the complying articles and sends them in ordered way to inlets of the feeding channels. Collecting means are situated downstream of the inlets for receiving, from the linear conveyor member, the exceeding articles situated near the inlets. Transferring means receive, from the collecting means, the exceeding articles and transfer them to an initial section of the selecting member, so that the articles are collected, recycled and their compliance is verified again.

Abstract: In a device for collecting and re-cycling articles sent toward feeding channels, a selecting member is situated downstream of a station where the articles are accumulated, for receiving, in a predetermined way, the articles from the accumulation station. The selecting member selects and holds complying articles, separating them from fragments and from powders associated thereto. A linear conveyor member, situated downstream of the selecting member, receives the complying articles and sends them in ordered way to inlets of the feeding channels. Collecting means are situated downstream of the inlets for receiving, from the linear conveyor member, the exceeding articles situated near the inlets. Transferring means receive, from the collecting means, the exceeding articles and transfer them to an initial section of the selecting member, so that the articles are collected, recycled and their compliance is verified again.

Abstract: A vibratory screening machine including an outer frame, an inner frame resiliently mounted on the outer frame, a plurality of screening units mounted in stacked and staggered relationship on the inner frame, each of the screening units including a screen-supporting surface and a chamber underlying the screen-supporting surface and an outlet duct in communication with the chamber, an undersize trough underlying the plurality of stacked and staggered screening units, a plurality of inlet ducts in the undersize trough with each of the inlet conduits in communication with one of the outlet conduits, and an oversize trough underlying the undersize trough and the stacked and staggered screening units.

Abstract: A particle size classifier in which feed material composed of product and overs moves downwardly through a separator unit by the action of negative pressures created by a first air blower associated with the collection of product and a second air blower associated with the collection of overs. As the feed material moves downwardly, the product and the overs are separated with the product passing from within a screen unit to outside the screen unit and the screen unit preventing passage of the overs. Blowback air, applied to the screen unit from the outside cleans the cylindrical screen unit to permit continued passage of product through the screen unit.

Abstract: A sifting machine comprises a stationary sifting basket, a rotor rotating within the sifting basket and a worm conveyor feeding into an end of the sifting basket for dosing and introducing the material to be sifted. The rotor and the worm conveyor are driven for rotation, wherein, in order to achieve an optimal rate of revolution adjusted to the desired mode of operation for both the worm conveyor and the rotor, each has its own drive device. In order to facilitate removal, the unit comprising the rotor, the sifting basket and the associated drive mechanism can be axially removed from the sifting machine housing and subsequently pivoted-out in a sideward direction via a pivot bearing.

Abstract: A dredge includes a primary grizzly with a sieve for separating dredged material initially into recoverable and discharge portions. A second or auxiliary grizzly and sieve are also provided on a chute extending from the primary grizzly to further remove remaining recoverable material from the portion of material discharged from the primary grizzly. A gate is provided for selectively opening and closing access to the auxiliary grizzly depending upon the make-up of the material discharged from the top of the primary grizzly. The combination of the primary and auxiliary grizzly provide for increased efficiency and effectiveness in recovering a larger percentage of recoverable material from a water-based dredging operation.

Abstract: A casing has a pulp slurry inlet, a reject outlet and an accept stock outlet and accommodates a rotor. The rotor has a hollow cylinder with scraper blades at its outer periphery. A screen plate is disposed outside of the scraper blades to provide between them a passage facing to the screen plate. The hollow cylinder is formed with pulp slurry outlets. Rotation of the hollow cylinder causes the pulp slurry to be circulated outside and inside of the hollow cylinder, so that separation of the pulp slurry into accept stock and reject is repeatedly carried out by the screen plate.

Abstract: The present invention provide apparatus and method for removing agglomerates from a slurry comprising a transport fluid and particulate matter carried by the transport fluid. The present invention includes a fluid flow control unit and an agglomerate removal unit fluidly connected thereto. The fluid flow control unit provides for a reduction in the flow velocity entering the agglomerate removal unit by increasing the output cross section relative to the input cross section and by providing a dewatering door that can be opened to varying degrees to allow variable outflow of transport fluid from the fluid flow control unit. The agglomerate removal unit has at least a first screen over which the slurry flows as it exits the fluid control unit. The screen includes a plurality of apertures appropriately sized to allow the transport fluid and the particulate matter to flow therethrough but not the agglomerates.

Abstract: An apparatus is provided for concentrating fine or broken particles to separate a particle stream into at least one stream which is concentrated in fine or broken particles and at least one stream with a reduced concentration of fine or broken particles. In addition to introduction and extraction structure, the apparatus includes at least two separator stages each comprising at least one funnel with an inclined or substantially vertical axis which opens upwardly, located beneath an inlet to collect the particles. The funnel is connected to at least one deflector which is directed downwardly to allow particles to flow under gravity and to form a bank of particles at the level of the funnel.

Abstract: A gravity flow apparatus that scalps off the large pieces of foreign material from grain before processing or storage. The scalper consists of an upright housing with a grain inlet at the top. The grain enters the housing and drops onto a dead head slide. The dead head slide with a flexible baffle slows the momentum of the falling grain then spreads the grain out over the slide width before it enters the screen. The slide is sloped to suit the grain's natural angle of repose and is lined with an anti-friction material for mass flow. The grain enters the full width of the screen while a second baffle stops grain from freely pouring into the foreign material discharge. The screen is adjustable to allow the grain to spread on the screen at its natural angle of repose while trash is scalped off over the screen into the trash discharge.

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 method for treating solid municipal waste material including placing solid municipal waste in a rotating chamber having an interior at ambient pressure, heating the waste at ambient pressure, and controlling the moisture content of the waste.

Abstract: An improved soil feeder system in combination with a soil separating apparatus and method of controlling the feeding of soil material employing the soil feeder. The soil feeder apparatus includes a hopper body to receive soil material and an opening at one end for controlling the feeding of soil material to be screened. The body includes hydraulic cylinders at the one end to tilt the hopper body between a soil receiving position and a tilted soil discharging position. An interruption system is provided to cause a series of abrupt interruptions in the tilting of the hopper body. The interruption system includes a cycle timer which controls the period of time between the start of each interruption and an interruption timer which controls the length of time of each interruption. The interruption is caused by a sudden and temporary diversion of hydraulic fluid from the hydraulic cylinders which tilt the hopper body.

Abstract: A tandem waterwheel type trommel apparatus having a laterally-disposed drain-off drum and a laterally-disposed classifying drum combined through a short pipe to form a main body, which is rotatably disposed on a base and is connected to a drive unit. A front end plate and a rear end plate each having a doughnut-like shape are respectively provided at the front and rear ends the drain-off drum. A plurality of buckets are provided in the drain-off drum, and gutters are provided on the back side of upper end portions of the buckets. The gutters communicate with drain holes formed in the rear end plate. A fixed shoot is provided which extends through the drain-off drum to the classifying drum. The classifying drum has a cylindrical portion and a truncated-cone portion. A circumferential member of truncated-cone portion is made porous while a circumferential member of the cylindrical portion is formed of a wire netting. A screw is provided on the outer circumferential surface of the cylindrical portion.

Abstract: A separator for the separation of fibrous bark from core material of chopped or crushed stalks of a crop such as Kenaf having two or more hollow bodies for rotation on inclined axes, each having a perforated wall and upper inlet and lower outlet ends. Within at least one of the bodies is provided a plurality of longitudinally extending, circumferentially spaced baffles. With rotation of each body while downwardly inclined from the inlet to the outlet, a fibrous phase of the material is conveyed in turn to discharge from the outlet end of one body and conveyed into the inlet of another body, while a more solid phase is discharged through the perforated walls of the bodies.

Abstract: A dust seal connector for accommodating the relative movement between the enclosed, moving screen box of a screening machine, and a fixed particle inlet or outlet conduit connected to the screen box. The relative movement occurs as sliding motion between a suspended flat slide plate and a wear ring below the slide plate, with which the plate is facially engaged. The plate is connected upwardly by an enclosed particle passage to the conduit or box member from which it is suspended, and communicates downwardly with an opening in the ring for the flow of particles. In a preferred embodiment the particles flow through an axially compressed corrugated sleeve which connects the plate to the member from which it is suspended, compression of the sleeve biasing the ring and plate together to maintain a sliding dust seal between them.

Abstract: The screening apparatus for efficiently separating coarse material from finer material, comprises a frame having a lower portion for resting on a surface, and a higher portion; a vibrating screen unit including a first material separating screen having a lower edge sloping downward with respect to said surface, and supported by the frame between the lower and higher portions; a shaker attached onto the vibrating screen unit for shaking the vibrating screen unit; a pivoting skip sufficiently wide for accommodating a payloader shovel, having two side arms pivotally connected onto the higher portion of the frame at a level that is sufficiently low for accommodating the payloader shovel; and a vibrator unit connected onto the skip.

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: An improved apparatus for cleaning, distributing and aereating grain is mounted in a storage structure and includes a frustro-conical screen device secured symetrically to an imperforate funnel-shaped member. A fan assembly is secured to the funnel-shaped body and is provided with a conduit which extends to the exterior. An adjustable control spout permits uniform distribution of grain upon the screen device where the fine material passes through the apertures in the screen while the grain is discharged into the storage structure. After the cleaning and distribution of steps are completed, the apparatus will then be inverted to position the screen device in the concave crater of the grain pile while positioning the funnel shaped body and fan assembly uppermost. The fan assembly will be energized to aereate the grain and present damage due to mold or fungus.

Abstract: An improved apparatus and process for fractionating pulp suspensions consists of multiple interchangeable modular treating compartments stacked atop one another. Pulp suspension is fractionated in the first compartment, and one of the two resulting fractions flows gravitationally to a second compartment where it is fractionated further. Any of the resulting fractions may be fractionated still further in subsequent compartments as many times as desired. The treating compartments are interchangeable, so removal, addition, or replacement of compartments is relatively easy and quick. Fractionation in each compartment is carried out through centrifugal force.

Abstract: There is disclosed a screening apparatus for screening particulate material and which comprises a base frame, an elevating conveyor adjustably mounted on the base frame and arranged to convey material from a loading station at or near a lower end of the conveyor to a discharge station at an upper end of the conveyor, a sub-frame adjustably mounted on the base frame and carrying a vibratory screen for receiving material falling from the conveyor, a drive mechanism for adjusting the position of the conveyor along a guided path of movement, and a coupling arrangement which couples the conveyor and the sub-frame together in such a way that adjustment of the position of the conveyor relative to the base frame is accompanied by corresponding adjustment of the position of the sub-frame relative to the base frame so that the vibratory screen can take up any required attitude to suit particular requirements and in which it is still able readily to receive material falling from the upper end of the conveyor.

Abstract: A mobile material screening apparatus includes a sloped screen box, a housing, a fifth wheel coupling, an engine and a pair of wheels fixed to the housing. Two hydraulic rams lift the apparatus and wheels off the ground and four extendable legs support it off the ground. A conveyor located underneath the screen box delivers fully screened material up over the fifth wheel coupling. A second conveyor located at the side of the apparatus removes second grade screened material. A third conveyor removes reject material which comes down a chute.

Abstract: An apparatus and method for sizing and separating particles of a material. The apparatus includes a stand, a frame having a pair of ends and an intermediate portion, and suspension assemblies attached to the stand and the frame for movably suspending the frame on the stand. A pair of inclined screens are removably mounted in a pair of screen boxes removably mounted on the frame, with each of the screens sloping downwardly from the intermediate portion of the frame toward a respective one of the ends of the frame. At least one motor is mounted on the frame for vibrating the frame and attached screens, and a feed box is mounted on the stand adjacent to and above upper ends of the screens for supplying a material to be sized. The method of the invention includes the steps of actuating the motor and depositing a material onto the upper ends of the screens via the feed box, so that the vibrating screens can simultaneously size and separate particles of the material.

Abstract: A granular material cleaning apparatus and method. The apparatus has an upright container housing assembly; an inlet housing assembly pivotally connected to the upright container housing assembly to receive a contaminated granular material; and material inlet control assembly mounted to the upright container housing at an upper inlet portion thereof. A discharge housing assembly is mounted to the upright container housing assembly; and a material flow channel assembly is mounted within the container housing assembly generally underneath the material inlet control assembly to initially receive the contaminated granular material at an upper end thereof and pass the same under gravity moving transversely on the material flow channel assembly until discharged into the discharge housing assembly.

Abstract: An aggregate collecting apparatus. A meter which measures the gross weight of the rotary drum is linked to the speed change gear for the rotary drum in such a manner as to be operationally connectable therewith so that the speed of rotation of the drum can be varied in accordance with variations in the amount of sludge charged in the drum. The upstream and downstream edges of a trommel in the rotary drum are intermittently twisted in each of opposite directions so that gravel clogging the trommel is automatically removed.

Abstract: Apparatus for removing debris from granular material includes a set of scalper assemblies and striker assemblies, which are disposed between an inlet and an outlet, and which are interconnected by a mechanical system to help urge the flow of the material through the housing to the outlet. The scalper assemblies are disposed on a set of frames covered with removable screens so that the flow of material falling against the scalper screens, cascades down the screens to form a flowing sheet of material, which falls off of the terminal end of the frame. The scalper screens are tiered and portions thereof are raised and dropped to help urge the larger debris within the granular material downwardly across the scalper screen towards its terminal end, while concurrently permitting the smaller granular material disposed thereon to fall through the screen meshings.

Abstract: An apparatus for separating different phases of dry material, such as plant fibers, from each other includes a rotating hollow body on an inclined axis with an inner perforated wall, an outer perforated wall, and partitions at spaced intervals within the body to define compartments. The compartments are connected by central openings in the partitions, and each compartment is provided with longitudinally extending baffles. The outer perforated wall is divided into longitudinal sections by a gap. The material is fed into an upper input end and the different phases are separated as it moves within the downwardly inclined body toward an outlet end. The separated phases are carried away by conveyors.

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: A sifter-screening machine for loose material, especially flour, including an inlet for the material, downstream thereof a screen through which the material can be conveyed via an air stream, and downstream thereof an outlet for screened material. Disposed in the conveying route of the material, downstream of the screen, is a zone of reduced static pressure followed in the conveying direction by a conveying zone having an increasing cross-sectional configuration. The weight of the material just upstream of the outlet is at least nearly equal to the oppositely directed pressure of compressed air below an air-permeable element for supplying the material to the outlet.

Abstract: A rotatable wood chip thickness classifying device. The apparatus includes two coaxial, spaced sets of apertured discs, each set defining a drum. The interdisc spacing of each drum is uniform, each drum having a different interdisc spacing from the other drum. For each set of discs, the inside diameter of adjacent discs alternates. Wood chips are fed into the interior of the first drum, this drum having a typical disc interspacing of 2 mm. The common axis of drum rotation is slightly tilted to the horizontal and chips of less than 2 mm fall through the interdisc openings of the first drum. The remainder of the chips pass to the interior of the second drum, typically of 8 mm interdisc spacing. Chips less than 8 mm fall through the interdisc openings of the second drum. The alternation of inside disc diameters, for each drum, yields a chip tumbling effect to thereby inhibit an elongated chip, of a diameter of less than 2 mm for example, from straddling the 2 mm openings and not falling therethrough.

Abstract: The sieve device comprises a filling funnel for feeding the material. A conveyor belt runs on the bottom of the filling funnel. The conveyor belt projects into a sieve drum, which is driven by a hydraulic motor. The material is transported through the sieve drum by a helical conveying ledge. Fine-grained elements of the material fall onto a conveyor belt extending below the sieve drum and are carried out to the side through conveyor belts extending at an angle. Coarse parts of the material are carried out at the rear end of the sieve drum through a conveyor belt.

Abstract: The invention comprises a screening device for separating fine particles from a stream of air and a particulate mixture containing coarse and fines which includes a box-like hollow housing tilted downwardly at an acute angle. The housing contains a plurality of elongated screening elements and an air cleaning device consisting of a blowpipe and a series of nozzles directed at the screening elements through Venturi tubes. At periodic intervals a jet or pulse of air is injected into the Venturi tubes to reverse air flow and rid the screen elements of adhered coarse particles. Substantially complete fines removal can be achieved by employing a recycling loop between the coarse particle outlet and inlet of the housing.

Abstract: A flexible connector for screening machines comprises an assembly of a plurality of generally cylindrical, flexible collars. Each collar has an annular endwise bead on a first circumferential end and an annular endwise opening groove within an endwise surface of a second circumferential end. The collars are connected by applying force in an axial direction to adjacent and aligned collars to seat and secure the bead of one collar into the groove of an adjacent collar to form a tube along an axis of connection between a particle chute and a movable screen frame.

Abstract: A process and apparatus are disclosed for recovering and cleaning contaminated particulate abrasives blast media for reuse. A first vacuum system vacuums up spent contaminated blast media from a work site and entrains it in an airstream. The entrained contaminated media is then projected onto a target surface that absorbs momentum of the contaminated media such that media and contaminates at least equal in weight to the media drop out of air suspension while contaminates lighter in weight than the media substantially remain in suspension. The contaminated media that drops out of entrainment falls into a rotating drum having apertured cylindrical wall surfaces that permit blast media to pass therethrough while retaining oversized contaminates. The rotating apertured drum is contained within a housing that is evacuated to substantially remove the lighter weight contaminates from the housing and, hence, from the media.

Abstract: A portable, collapsible grain cleaner and spreader apparatus is used to evenly spread and clean grain or similar crops as the grain is introduced into a storage structure. The grain cleaner and spreader apparatus comprises a vertically disposed grain receiver which distributes grain to be dried over a frusto-conically shaped perforated screen device. A funnel-shaped body engages the perforated screen device and has a fan assembly connected thereto. Grain is evenly distributed over the screen device into the storage structure. Debris, chaff, bees wings, dirt, and weevils pass through the screen device, funnel-shaped member, and fan assembly and are discharged exteriorly of the storage structure through a conduit.

Abstract: An apparatus for loading open top grain hopper rail cars and trucks which eliminates the buildup of a core of small material and grains directly beneath the load out spout. Also, the grain will not build up heat as easily with the core eliminated and a more representative sample, for grading purposes, can be obtained from the hopper car or truck. The spout line buster is a small, stove-shaped chamber which attaches to the end of a grain load out spout and is lowered about six inches into the hopper rail car or truck being loaded. The grain passes through the down spout and enters the spout line buster where the flow of the grain is directed and slowed by a series of baffles or flow guides. In the model designed for loading hopper rail cars, the grain strikes a screen assembly consisting of a cone screen and two diagonal screens.

Abstract: A drum separator includes a cylindrical screen drum which is mounted for rotation within a sealed housing such that a small portion of the perimeter of the screen drum is exposed. Air, fibers, and fines are introduced onto a first part of the exposed portion of the screen drum and fines and air pass through the screen drum into the interior of the housing and then to a fines collector. Fibers which are too large to pass through the screen drum are carried by the rotation of the screen drum to a pick-up head which applies a low pressure to the exterior of the screen drum to remove the fibers. The pick-up head is pivotably mounted to the housing, and air cylinders lift the pick-up head away from the screen drum in the event of an impact. The pick-up head includes a pick-up bar and a plurality of fins which are shaped to optimize removal of fibers from the exterior of the screen drum.

Abstract: A rotary pulp screening device of the vertical type is disclosed having a high screening efficiency and high capacity. The screen provides a streamline flow of pulpstock, and aims to supply a fairly constant flow of pulp through the screen from top to bottom, thus utilizing the full height of the screen. The screening device includes a cylindrical housing with a vertical cylindrical screen therein, a rotary impeller mounted for rotation within the screen, the impeller having a body whose top is substantially level with the disc ring and bottom is adjacent the lower end of the cylindrical screen, the body having a shape with circular axial cross section from the top to the bottom, whose diameter increases from the top to the bottom thus leaving a larger annular space at the top, and impeller blades radiating from at least a portion of the body of the impeller and extending to within a short distance from the screen for the height of the screen.

Abstract: The invention relates to a method and apparatus for sorting out recycled paper pulp obtained from scrap material containing contaminants in the form of large pieces of foreign material such as plastics, adhesives, pieces of rope and the like.The invention avoids the need to disintegrate such large pieces of foreign material prior to their removal.The device of the invention comprises a drum (1) with an horizontal axis (2), an end wall (3) of the drum being fitted with a perforated plate (4) and an helical stirrer (5) having profiled blades rotating in a plane parallel to this plate at a short distance thereof, these blades having a transverse cross-section with a hydrodynamic profile adapted for generating a depression in front of the perforated plate, and a leading edge (6) forming a Bernouilli spiral with a constant angle of approximately 30.degree.

Abstract: Apparatus for cleaning, aerating and fumigating grain comprises chutes having screens therein over which the grain is passed. Conduits interconnect the chutes with a blower mechanism so that the grain to be cleaned is subjected to a vacuum which causes the fine debris, trash and the like to be passed through the screen. The fine debris is entrained in a stream of air and directed exteriorly of the grain storage structure. The conduits connected to the blower assembly may be detached from the grain cleaning chutes and connected to tubes inserted into the grain to permit heated gases and moisture to be removed from the stored grain. An air entrained fumigant may also be directed through the tubes into the grain for controlling insects and the like.

Abstract: A sluice box classifier for a sluice box of a gold mining dredge includes a trough and a rim secured to an underside of the trough. The rim anchors the trough to a standard size container. The trough is formed of four walls and a bottom, and is at least as wide as a lower end portion of the sluice box from which collected overburden is received. The bottom includes a center panel and two floor panels which slope upwardly from opposite sides of the center panel to meet opposite sidewalls of the trough. The floor panels funnel overburden deposited into the trough from the sluice box to the center panel where a plurality of openings in the center panel allows the smaller pieces of overburden to pass through into the container. A portion of a front wall of the trough is bent outwardly of the trough to cooperate with an angle member so as to form a slot which connects the trough to the sluice box.

Abstract: A vibrating conveyor for delivering a stream of green pellets having a predetermined average diameter to a conveying surface of a wide belt conveyor. The vibrating conveyor has a vibrating deck having a discharge edge and conveys the green pellets along a conveyance path to the discharge edge. The discharge edge extends at an acute angle to the conveyance path. A series of elongated distributing bars or rows of bosses protrude upwardly from an upper surface of the deck along the entire conveyance path and extend along lines transverse to, and spaced along, the conveyance path, the elongated distributing bars or bosses having a height of 7.5 to 30 mm.

Abstract: In digging and hauling soil, rocks, minerals and the like by the use of a dragline the invention provides a novel combination of said dragline, a conveyor means for hauling the materials dug, and a hopper means disposed over and movable along said conveyor means whereby material may be efficiently excavated and transported out of the working area.

Abstract: A method and apparatus for treating sewage and converting the sewage into organic fertilizer which utilizes equipment for converting the solid material of the sewage into patties and a mixing apparatus for mixing the patties with bulking agents. The mixture of patties and bulking agents is stored in a pile and subjected to a supply of air to enhance the self-combustion or oxidation of the organic material in the patties. The bulking agents provide the patty-bulking agent mixture with air passages and pockets and minimize compaction of the patties. The self-combustion of the patties continues until the organic material is burned out, leaving a residual ash. A shaker separator having an elongated longitudinal perforated member is reciprocated to separate the ash from the bulking agents. The ash is collected and utilized as organic fertilizer. The bulking agents are recycled back to the mixing apparatus.

Abstract: A pressurized screening device has an inlet arrangement by which a feed slurry is directed to a central portion of a screening chamber, a plurality of chevron-shaped rotor foils are mounted for rotation near the inner surface of a cylindrical screenplate to split the flow of the feed slurry into separate flow portions directed toward opposite ends of the screening chamber, and separate reject chambers are provided adjacent its opposite ends of its screening chamber. The chevron-shaped foil structure enables the screening device to operate as if it were two smaller screening devices and to remove efficiently both light and heavy impurities from the feed stock.

Abstract: An apparatus for sizing or separating different types of particulate material such as grain, seeds and the like without the need for replacing the sizing screens includes a movable diverter disposed between upper and lower sets of screens. When the diverter is in a first position, material passing through a first sizing screen is directed to the top of a second sizing screen and material which has not passed through the first sizing screen is directed to a discharge pan. When the diverter is in a second position, material which has passed through the first sizing screen is directed toward a discharge pan and material which has not passsed through the first sizing screen is directed toward a second sizing screen.

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.