Abstract: The present teaching relates to method and system for an assembly for protecting a sensor. The assembly includes a first structure having a rectangular prism and connected with a truncated tube, wherein the rectangular prism and the truncated tube have parallel longitudinal axes and the tube is truncated to yield a cross section having a norm that forms an angle with the longitudinal axis of the truncated tube and a second structure of a trapezoid prism having a longitudinal axis parallel to the longitudinal axes and with the first structure embedded therein. The second structure has a slanted surface in the front that meets the cross section of the truncated tube and has the norm of the cross section.

Abstract: The present teaching relates to method and system for an assembly for protecting a sensor. The assembly includes a first structure having a rectangular prism and connected with a truncated tube, wherein the rectangular prism and the truncated tube have parallel longitudinal axes and the tube is truncated to yield a cross section having a norm that forms an angle with the longitudinal axis of the truncated tube and a second structure of a trapezoid prism having a longitudinal axis parallel to the longitudinal axes and with the first structure embedded therein. The second structure has a slanted surface in the front that meets the cross section of the truncated tube and has the norm of the cross section.

Abstract: A separator having a pressure differential generating system is disclosed. The pressure differential generating system generates a pressure differential with respect to a screen of the separator. Fluid is supplied to the pressure differential generating device to generate the pressure differential across a screen of the separator. The separator can be utilized to separate drill cuttings from drilling fluid to increase an amount of drilling fluid recovered as a result of the pressure differential.

Abstract: A wire netting, in particular a safety net, with a plurality of helices which are braided and at least one of which is manufactured of at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element with at least one wire comprising one first leg, one second leg and one bending region, wherein, in a front view perpendicularly to a main extension plane of the helix, the first leg extends with at least one first gradient angle with respect to a longitudinal direction of the helix, wherein, in a transverse view in parallel to the main extension plane of the helix and perpendicularly to the longitudinal direction of the helix, the bending region extends at least section-wise with a second gradient angle with respect to the longitudinal direction of the helix, wherein the second gradient angle differs from the first gradient angle.

Abstract: A grain drying and moving apparatus combination includes a conveyor assembly in communication with a bottom wall channel of a grain dryer assembly. The conveyor assembly receives and transports grain away from the housing. The conveyor assembly includes a conduit that is attachable to the bottom wall and coextensive with the channel. The conduit includes a first lateral wall, a second lateral wall and a lower wall. A rail is attached to the conduit. A chain is mounted on the rail and forms a continuous loop. The chain includes a plurality of links each having an upper plate and a lower plate. The upper and lower plates are horizontally orientated. A plurality of paddles is attached to and extends downwardly from the chain. The paddles each extend between the first and second lateral walls when the paddles are within the conduit.

Abstract: A screen chain conveyor for a root crop harvesting machine has a support belt having belt ends and transverse conveying rods secured in the support belt. A belt fastener is provided that has connecting members attached to the belt ends, respectively. The belt fastener has an articulated connection connecting the connecting members. The articulated connection has a component pair and a seal adapted to prevent at least penetration of dirt particles into the component pair.

Abstract: An apparatus for reclaiming abrasive blasting material comprises a prime mover, a vacuum pump and a separator unit for separating the abrasive blasting material in the contaminated abrasive blasting material from contaminants. The vacuum pick-up draws the contaminated abrasive blasting material. The separator unit includes a screening device for separating and reclaiming the abrasive blasting material. The screening device comprises a support member having a longitudinal axis and a transverse axis, and an endless flexible screen belt mounted to the support member so as to be movable along an endless closed loop in the direction of the longitudinal axis. The screen belt has a plurality of openings being sized to allow particles of the abrasive blasting material of a desired size to fall therethrough by gravity and to prevent the contaminants larger than the abrasive blasting material from falling therethrough.

Abstract: A weight filling device for filling small objects comprising a vibrating feed assembly, at least two bins in a side by side orientation, and a chute assembly. The feed assembly includes feed stations having a feed tray with a large feed portion and a small feed portion in a side by side orientation, either integrally formed along a part or all of the length thereof, and each extending to a distal end thereof and vibrating at a predetermined frequency. The bins are positioned so as to be placeable in communication with the distal end of the at least one feed tray. The chute assembly is positioned below the distal end of the at least one feed tray, and has at least one directing chute station having a large feed selector positioned below the large feed portion of the feed tray and a small feed selector positioned below the small feed portion of the feed tray.

Abstract: A conveying device for a root crop harvester has an endless conveying member combined of monolithic structural elements connected sequentially to each other in a belt shape. The structural elements each have an entrainment member and a support surface supporting objects to be transported on the endless conveying member. The structural elements each have at least one connecting zone. The structural elements in the connected position each form a flat element connected sequentially at the connecting zone, respectively. In the connected position of the structural elements, the entrainment members extend transversely to a conveying direction of the endless conveying member and between the transversely extending entrainment members the support surfaces are positioned, respectively.

Abstract: An apparatus and a method of screening a material containing a solid and fluid where the material is placed on an upper side of a screen element and the material is at least being acted on by vibrations produced by at least one acoustic sound source. The at least one acoustic sound source is arranged to transmit pressure waves to at least a portion of an underside of the screen element.

Abstract: A grain processor comprises a conveyor, air-suction means, and air-blowing means. The conveyor has a surface defining a conveying course on which grains are disposed, and the surface has holes smaller than the grains. The air above the surface is sucked downward through the holes by the air-suction means. The air-blowing means blows air upward through the holes at a predetermined position in the conveying course so as to apply blowing-up force onto the conveyed grains on the surface reaching the predetermined position.

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 or vibratory separator for treating material, e.g. in one aspect, a shale shaker for treating drilling fluid having contaminants therein, the shale shaker having a base, a basket on the base, fluid introduction apparatus for introducing the drilling fluid into the basket, screen apparatus for selectively providing screening material in or under the basket, the screening material positioned so that the drilling fluid flows onto the screening material, a primary roll of screening material, a take-up roll for receiving screening material from the primary roll, the rolls rotatably mounted so that screening material is movable, through or under the basket, and onto the take-up roll, vibratory apparatus connected to the basket for vibrating the basket, and receptacle apparatus for receiving fluid flowing through the screening material.

Abstract: In order to enable a reliable and continuous separation of a solid material, a separating device includes a moving belt which revolves around deflection rollers. Transverse strips and longitudinal strips are provided on the moving belt. The transverse and longitudinal strips form screen surfaces. Solid material having a predetermined maximum dimension falls through these screen surfaces. The portions of solid material which are caught between the transverse strips are automatically loosened when the moving belt moves. In addition, portions of solid material which are caught between the longitudinal strips are removed by a cleaning rake thus guaranteeing an uninterrupted operation. The separating device is especially suited for separating pyrolysis residual material. A method of separating solid material is also provided.

Abstract: An arrangement for removing chips from a machining coolant prior to filtering out the finer solids in a main filter. A coarse weave belt is frictionally driven along a strainer bottom wall of an auxiliary tank suspended above the main filter tank, the permanent media belt of a coarse weave which allows the liquid and suspended finer solids to pass through while capturing the chips. A powered drag conveyor frictionally engages and drives the permanent media belt through the auxiliary tank, each diverging when returning across the top and bottom respectively of the auxiliary tank prior to being recirculated through the auxiliary tank.

Abstract: The application discloses a belt formed of first and second portions of thermoplastic sheet including, respectively, first and second pluralities of tabs spaced apart so as to define first and second pluralities of openings along corresponding first and second edges of the first and second portions of thermoplastic sheet, wherein the first plurality of tabs are joined to the second plurality of tabs so as to join the first edge to the second edge. Also disclosed is a method for forming a belt of a thermoplastic material, including forming angles on a first edge of a first portion of thermoplastic sheet and on a second edge of a second portion of thermoplastic sheet, forming first and second pluralities of openings, respectively, in the first and second portions of thermoplastic sheet, placing together the first and second edges such that they overlap, and joining the first and second portions of thermoplastic sheet together.

Abstract: An apparatus for removing cut trim and dust from a paper handling machine, comprising an inlet port for carrying the cut trim and dust from the paper handling machine, a perforated conveyor located in a first chamber of the apparatus and operatively arranged to transport the cut trim from the inlet port to a waste container, and to transport the dust through the perforations to an ancillary chamber, and, means for creating a vacuum within the inlet port and the first and ancillary chambers to cause the dust to be transported from the inlet port, through the perforated conveyor in the first chamber, to the ancillary chamber. The method includes steps to separate cut trim from dust under vacuum.

Abstract: A process for producing sodium tripolyphosphate includes mixing sodium hydroxide or sodium carbonate with dilute phosphoric acid in amounts which are substantially stoichiometric for the production of sodium tripolyphosphate to produce an intermediate crystalline mix in a sludge. The intermediate crystalline mix is separated from the sludge, and melted in a vessel to cause sodium tripolyphosphate to be produced. The molten sodium tripolyphosphate is removed from the vessel, and cooled to produce solid sodium tripolyphosphate.

Abstract: An arrangement for removing chips from a machining coolant prior to filtering out the finer solids in a main filter. A coarse weave belt is frictionally driven along a strainer bottom wall of an auxiliary tank suspended above the main filter tank, the permanent media belt of a coarse weave which allows the liquid and suspended finer solids to pass through while capturing the chips. A powered drag conveyor frictionally engages and drives the permanent media belt through the auxiliary tank, each diverging when returning across the top and bottom respectively of the auxiliary tank prior to being recirculated through the auxiliary tank.

Abstract: A separator includes a continuous inclined screening belt that passes over an upper roller and a lower roller to screen debris from municipal wastewater. The debris is then conveyed to a debris discharge outlet. A puddle of debris-laden wastewater forms a hydrostatic pressure head on the upper surface of the screening belt to assist in forcing the wastewater through the screening belt. Wastewater that passes through apertures in the screening belt is deflected by a deflector plate that shields the return path of the screening belt. The screened wastewater is then directed to the wastewater outlet. In a preferred embodiment, a belt-cleaning brush is disposed along the return path and brushes clinging debris from the screening belt toward the debris discharge outlet. Additionally, the screening belt rides on and is supported by a perforated backing plate as it travels from the lower roller to the upper roller.

Abstract: A separator 10 is disclosed and claimed. The separator includes a continuous separating assembly 20 following a trajectory having a top run A and a return run B. The assembly includes a train of articulated pan assemblies 22.1 to 22.n. Each pan assembly includes first and second back-to-back pans 22.11 and 22.12 separated by a discrete mesh segment 60.1. In use, the separator is charged with a mixture including a liquid, a first solid particulate component and a second solid particulate component of which the particles are bigger than the first particulate component, both at the start 26 of the top run and at the start 28 of the return run. The first particulate component is received in sumps 30,32 and 34,36 and the second particulate component is collected in collection regions 42 and 46.

Abstract: A continuous-belt drilling mud separation unit is removably mounted in a box-like housing disposed in the flow path of drilling mud or drilling fluids and is operated by a motor on the housing. The separation unit includes a generally rectangular frame, a tensioning system, and a wide continuous belt in the form of a mesh screen, chain, self-cleaning chain link belt, or combination chain link belt and wire mesh screen which extends around rollers or sprockets and is driven in a continuous loop moving along the longitudinal axis of the frame. As drilling mud or drilling fluids are conducted onto the moving belt, liquids and particles smaller than the openings in the belt pass through the openings and liquids and particles larger than the openings are transported on the moving belt and are discharged off of one end as the belt completes its path.

Abstract: A pair of cylindrical composite rollers formed of a metallic drum having a thick outer elastomeric layer are mounted transversely in a rectangular frame of a drilling mud separation unit over which a wide endless-loop chain-link belt is driven in a continuous loop moving along the longitudinal axis of the frame. The drive roller has a plurality of axially spaced circumferential rows of radially extending teeth that are machined in the surface of the elastomeric material. The endless belt is formed of a plurality of laterally adjacent jointed links hinged together by transverse rods. As drilling mud or drilling fluids are conducted onto the moving belt, liquids and particles smaller than the openings in the belt pass through the openings and liquids and particles larger than the openings are transported on the moving belt and are discharged off of one end as the belt completes its path.

Abstract: A vibration-type screening machine capable of screening loose material with a significantly enhanced efficiency includes a stationary base frame, a pair of upstanding side plates supported on the stationary base frame through spring suspensions and disposed substantially in parallel with each other so as to extend longitudinally of the screening machine, a plurality of sieve mesh supporting rollers rotatably mounted between the upstanding side plates, an endless sieve mesh web disposed between the upstanding side plates with an upper span section thereof being supported on the plurality of sieve mesh supporting rollers so that the endless sieve mesh web can endlessly move in a direction longitudinally of the screening machine from a loading port toward a discharging port, a driving unit moving endlessly the endless sieve mesh web, and an eccentric rotating vibrating mechanism disposed at a position near to the loading port and operatively coupled to the pair of upstanding side plates so that the sieve mesh su

Abstract: A bypass diverter box disposed upstream from conventional solids control equipment of a mud system of a drilling rig contains a drilling mud separation unit having a continuous-loop scalper screen that is driven in a continuous loop to separate, convey and discharge large amounts of gumbo, heavy clays and drill solids at the end of the separation unit. The flow divider box is a box-like housing with a verter plate, upper and lower baffle plates and a grate that allows drilling fluid or drilling mud to be selectively directed to the mud separation unit to be separated prior to passing to the conventional downstream solids control equipment or allows the fluid to bypass the separation unit and flow directly to the conventional solids control equipment.

Abstract: A gumbo separator has a continuous, inclined, moving screen belt which rides on and is supported by a perforated backing plate. The desirable portion of drilling fluids fed to the gumbo separator passes through the screen belt and backing plate and may be further processed to remove drill cuttings. The gumbo, containing gummy hydrated clays, are conveyed off the screen belt to the reserve pit. The gumbo separator provides a self cleaning screen belt, using a counter-rotating belt cleaning brush. A spray bar back-washes the screen belt with high pressure drilling mud to remove any gumbo lodged in the screen belt openings.

Abstract: Method and apparatus are provided for separating coarse and ultrafine solids from a liquid stream to produce a substantially dry solids discharge and a clarified liquid. Apparatus is provided comprising a combination of a settling tank, a plurality of filter screens spaced along an endless link-chain conveyor, a screen vibrator and directed air streams. In operation, coarse solids settle preferentially to the tank bottom. Ultrafines solids remain in suspension. Relatively coarse filter screens are conveyed from a point outside the tank to traverse a prolonged path through the liquid. Ultrafine solids are captured on the screens, by filtering the liquid through an ever finer build-up of filter cake. The relatively large number of passes of the screens through the liquid provides effective filtering of suspended solids. Further, the screens dredge settled solids from the tank bottom.

Abstract: A screen conveyor belt for farming equipment has a plurality of flat belt members having a longitudinal extension in the direction of travel of the screen conveyor belt and being arranged parallel to one another. Rod members extend perpendicular to the direction of travel and are spaced from one another in the direction of travel so as to form therebetween openings of the screen conveyor belt. The rod members have a first and a second flat end section and a central operative portion located between the first and second flat end sections. The first and second flat end sections of each one of the rod members are positioned on adjacent ones of the belt members, respectively. Fasteners for connecting the flat end sections to the flat belt members are provided and the fasteners penetrate the flat end sections. A thickness of the flat end sections is greater adjacent to the central operative portion than at the free end of the flat end sections.

Abstract: A padding machine attachment for a vehicle is provided. When padding of a ditch for a pipeline or cable is required, the padding machine is removably attached in a position at one end of a conventional bucket loader, bulldozer, or other base machine or vehicle, whereby said attachment moves along the path of travel of the vehicle. As the vehicle moves the padding machine attachment along one side of the pipeline ditch, the padding machine attachment picks up at least a portion of a pile of excavated material placed parallel to and along the same side of the ditch and processes the excavated material into padding material for placement into the ditch for padding the pipeline or cable.

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 invention comprises a machine for cleaning various crops such as peanuts and separating debris therefrom which may be easily transported to the field when such crops are harvested. The machine includes a unique conveyor which is formed of spaced rods mounted on endless chains in a manner so that the spaces may be selectively varied. The conveyor is vibrated as it carries the crop and debris from a feeding hopper to a discharge chute.

Abstract: An improved belted chain is described in which there are a plurality of pairs of chain rods secured to spaced-apart carriers and a central belt. The inner ends of the chain rods in each pair are aligned end-to-end with each other and then secured to the central belt. The outer ends are secured to the spaced-apart carriers. Preferably the central belt is composed of rubber. The chain rods in each pair are able to be flexed relative to each other without danger of breaking the rods.

Abstract: An apparatus is described which separates small solids from process waste water. A continuously rotating elongated drum screen having a large diameter interior flow channel removes the solids. The drum screen contains a continuous loop of closely spaced link members each having a foot at one end projecting towards the interior of the drum chambr. Pivot members are connected to the links and these pivot members are driven by lugs attached to an endless loop chain. The chain is driven by variable speed motors. A flushing system mounted on top of the drum screen washes solids into a hopper where liquid is returned to the drum inner chamber and solids are sent to solid waste disposal.

Abstract: A compact padding machine for screening and conveying soil into a trench. The machine is usable as an attachment to a conventional bucket loader, bulldozer or other base machine. The padding machine includes a screening belt, an underlying inclined conveyor belt, and a transverse, extendible discharge conveyor belt. Soil is collected and conveyed upwardly on the screening belt. Fine grained soil passes through the screening belt, is deposited onto the inclined conveyor belt, and is discharged therefrom onto the transverse conveyor belt, from where it may be conveyed into an adjacent trench. A hydraulic vibrator is coupled to the screening belt to disaggregate clods of fine-grained soil and cause the soil to pass through the screening belt. Rocks and other large objects are conveyed to the rear of the machine and discharged.

Abstract: The press comprises a pair of moving endless filter bands having two parallel lengths sandwiching material to be dehydrated and clamped between two presser plates each of which acts against a corresponding one of the lengths of band via a respective moving endless belt. Each presser plate is associated with at least one endless bearing chain carrying a series of wheels which are free to rotate and which are interposed between the presser plates and the associated endless belt.

Abstract: A self-cleaning vacuum filter (1), particularly for industrial lubricating and cooling liquids, has a filter bed (3) which is housed in a tank (2) for the liquid to be filtered and communicates at the bottom with an intake chamber (5) for the liquid. The filter bed includes a screen (4) and an endless loop for regenerable filter fabric (17) whose surface (17c) on which the filtered material is deposited always faces outwardly of the loop.

Abstract: A high speed stock thickener has a foraminous endless wire. The stock thickener is of the type in which an open mesh endless wire is trained over a pair of rolls and paper stock to be thickened is applied between the wire and the rolls and is carried on an inside surface of the wire for dewatering, particularly at the regions where the stock is carried between the wire and a roll. The improved wire is formed with a width greater than that of the rolls with a marginal edge of the wire extending beyond the face of the rolls. A guide belt is attached at each of the marginal edges of the wire and runs with a side wall in engagement with the end of the adjacent roll. The guide belts are attached to the wire by an adhesive bond between the backs of the belts and the adjacent wire surfaces, and by a continous thread which is sewn through each belt from the bottom of the belt and through the back thereof and into the wire.

Abstract: A nut harvest trailer having a hopper with a rotatable loop of flexible screen affixed over the top of the hopper extending from the front to the rear thereof. A solid panel is affixed between an upper and lower layer of the loop of screen. The solid panel extends from the front of the hopper toward the rear thereof. The solid panel terminates to leave a narrow opening between the end of the solid panel and the rear of the hopper. The structure allows a mixture of nuts and small limbs to be deposited onto the upper layer of screen and solid panel at the front of the trailer. The mixture is then moved by the upper layer of screen on the solid panel toward the rear of the trailer where the nuts fall through the screen, through the narrow opening and into the hopper of the trailer. The sticks remain on the screen and are deposited off the rear of the trailer. The lower layer of the screen loop moves from the rear of the hopper toward the front thereof.

Abstract: A belt conveyor system comprises a conveyor drive and support and a conveyor belt fashioned as a braided web. In order to be able to utilize, independently of the conveyor drive and support any desired braided webs for transporting any desired items in varying temperature ranges, the conveyor drive is made of parallel chains joined together by crossbars. The braided web is placed thereon and connected to the crossbars by entraining dogs configured as combs.

Abstract: An apparatus is described which separates small solids from process waste water. A continuously rotating elongated drum screen in a three foot diameter flow channel removes the solids. The solids are deposited by spray wash into a dewatering chamber. The screen components include row of closely spaced links and pivot members connected end-to-end to form a continuous loop mounted within a frame driven by a variable speed motor.

Abstract: Apparatus for thickening a suspension of pulp material employs a single pair of liquid-impervious rolls and a single loop of wire trained around both rolls which are spaced from each other in substantially the same horizontal plane. The pulp stock to be thickened is delivered into the wedge zone defined by the upper wire run approaching the top of one roll and the surface of that roll, so that the pulp is trapped between the wire and roll as it travels around the roll with the wire, and the rolls are driven at sufficient speed to develop centrifugal forces which cause liquid to be expressed through the wire from the pulp trapped against the roll.

Abstract: In a screen the screening band is formed by a plurality of screening panels linked to each other in succession substantially perpendicularly to the direction of movement of the assembly, the filtering element of a filtering panel of this kind forming, relative to the plane of the chassis that carries it, at least one part-cylindrical projection extending parallel to the direction of movement of the assembly. For each projection of this kind the washing manifold comprises two staggered nozzles, one oblique in one direction and the other oblique in the opposite direction.

Abstract: The separation of a first solid component from a mixture thereof with a liquid and a second solid component which is of smaller average particle size than the first solid component, the first and second solid components being in suspension in the liquid and with the percentage by mass of the second solid component being substantially greater than that of the first solid component, by means of a travelling endless cloth. The cloth passes through an operative separating region in a horizontal manner. The mixture is fed onto substantially the entire operative separating region from a feed box that has a floor with apertures therein; the floor being located above the cloth. The liquid and second solid component pass through the cloth, to be collected by a trough. The first solid component remains on the cloth and is subsequently removed and collected.

Abstract: Disclosed is a plow assembly adapted for use with an endless conveyor type filtering device. The assembly comprises an elongated support member and at least one plow depending therefrom. The plow comprises a shaft affixed to the support member, a plow body having a central bore through which the shaft partially extends, the body being capable of rotary movement on the shaft, and a stop retaining the plow body on the shaft.

Abstract: Disclosed is a filtering device comprising an endless perforate conveyor belt adapted to carry a liquid-containing material and extract liquid from the material through the belt, and a plow assembly for disrupting the material carried by the belt. The plow assembly comprises a generally horizontally positioned cross-member extending across the width of the belt, the cross-member supporting at least one plow such that the plow is capable of contacting the material carried by the belt, the cross-member is mounted adjacent its ends on slide means that enable the cross-member to be raised and lowered with respect to the perforate belt. The device further includes selectively actuatable member for raising and lowering the cross-member with respect to the belt to thereby move the plows into and out of material contacting position.

Abstract: Apparatus for separating peanuts and like commodities from vines and debris entrained with the peanuts during the harvesting process includes an endless conveyor forming a screen structure made up of elongated platelike members interconnected by spaced apart endless roller chains trained over a triangular arrangement of drive shafting and supporting sprockets. The conveyor screen members are formed by the elongated plates which include horizontally projecting spaced apart tines and vertically extending rake teeth aligned with the tines. The adjacent tines and adjacent plates form openings of predetermined size for allowing peanuts to drop through the conveyor screen into a first receiving hopper while retaining stems, vine parts and other debris on the conveyor screen to be deposited in a second receiving hopper.

Abstract: A mixture containing oleophilic surfaced mineral particles and oleophobic gangue particles in an aqueous phase is separated by means of an apertured oleophilic endless sieve supported in a separation zone by a revolving cylindrical cage having apertured sidewalls and supported in a recovery zone by a support roller, each section of sieve surface alternately revolves through the separation zone and recovery zone. The aqueous mixture is introduced as a slurry into the rotating cage. The endless sieve partly covers the outside surface of the cylindrical cage sidewall. An oleophilic adhesive is placed on the sieve as a coating or added to the aqueous slurry in the cage or both. The mixture tumbles inside of the cage and passes through the cage sidewall apertures to the sieve surface. The oleophilic mineral particles of the mixture adhere to the oleophilic adhesive and are captured by the sieve upon contact and conveyed out of the separation zone into the recovery zone.

Abstract: Filtration apparatus in which the filter medium is in the form of a mat assembled with a support grid which is caused to traverse through a filter chamber in a zig zag path. The mat and support grid extend between the side walls of the filter chamber and are advanced by turning rolls disposed at upper and lower levels. The support grid for the filter mat extends between sealing flanges projecting from the side walls of the filter chamber and auxiliary support for the support grid may be provided by employing a foraminous shelf extending between the flanges. The filter medium is disposed so that its edges overlie the sealing flanges, thereby preventing flow of gaseous medium around the edges of the filter mat. Sealing engagement between the sealing flanges and the filter mat is assured by the inclusion of a series of apertures spaced along the length of the flanges.

Abstract: A screen filter comprising a plurality of rollers arranged in parallel, spaced relationship with a plurality of carriers positioned between the rollers with the axes of the carriers parallel to the axes of the rollers. An endless wire is wound spirally over the rollers and engages the surfaces of the carriers so as to form a screen. A driving means engages at least one of the rollers for driving the endless wire. The raw material to be screened is deposited onto the screen.

Abstract: Apparatus for grading objects according to size comprises a grading array of spaced apart grading rollers which allow objects smaller than the roller spacing to pass between adjacent rollers but retain objects larger than the roller spacing. Support members are provided capable of assuming different degrees of curvature, for example endless conveyors, and the grading members are mounted on and spaced from the support members by mounting elements which extend outwardly from the support members. A mechanism for varying the curvature of the support members, such as a leaf spring on which the support members rests, causes the grading rollers to spread apart or to come towards each other so as to vary the size threshold of the grading array.