Abstract: A vibratory screening apparatus including a support and at least two screen decks arranged one over the other as an assembly. Each screen deck includes a screen frame, a screen and a chamber underlaying the screen surface, an outlet duct for oversized material and an outlet duct for undersized material in communication with the chamber. Mountings are configured for mounting the assembly of the screen decks to the support. A drive support with a motor assembly is configured for vibrating the assembly of screen decks. A feed unit is configured to feed the material to be screened to each screen deck. The feed unit is arranged on the support and configured to be moved between a feed position and a maintenance position. The assembly of the at least two screen decks is resiliently arranged on the support, while the feed unit is non-resiliently arranged on the support.

Abstract: A sieve for a cleaning system of an agricultural harvester includes: a sieve frame defining a top side; adjustable louvers carried by the sieve frame and defining apertures; an adjustment bar coupled to the adjustable louvers such that displacement of the adjustment bar changes a size of at least some of the apertures; and an adjustment assembly. The adjustment assembly includes: an adjustment arm coupled to the adjustment bar and pivotable relative to the sieve frame such that pivoting of the adjustment arm about a pivot axis displaces the adjustment bar. The adjustment arm carries a locking pin. A shaft is disposed on the top side and coupled to the adjustment arm. Displacement of the shaft from a first position to a second position causes a corresponding displacement of the locking pin from a locking position to an adjustment position.

Abstract: A side tensioning assembly for retaining screen media to the side plates of a vibrating-type screening machine includes a support structure for supporting the screen media and a tensioning rail mountable to at least one side plate. At least one bolt assembly is provided for fastening the tensioning rail to at least one of the side plates. Each bolt assembly including a bolt connectable to the tensioning rail, at least one of side plates and at least one bolt engaging structure on a surface of the side plate. Each bolt engaging structure includes a cutout. The cutout is sized larger than the bolt but smaller than a nut. The movable plate has a bolt-securing position and a bolt-releasing position.

Abstract: An apparatus includes a vibratory separator having a frame and a screen, a lift housing disposed proximate the vibratory separator, and a lift system disposed in the lift housing and configured to selectively engage a portion of the vibratory separator to lift the portion of the vibratory separator. A method includes actuating an actuator and vertically extending a lifting member, contacting an alignment device coupled to the lifting member with a corresponding alignment device coupled to a portion of a vibratory separator, and raising the portion of the vibratory separator to provide access to a screen of the vibratory separator.

Abstract: A system and a method tension a screen having a generally rectangular shape defined by a length and a width. The screen has a profile with a shape extending the length of the screen. A rod has a channel configured to receive the shape of the profile of the screen therein. The rod has a plurality of segmented portions such that a first segmented portion of the plurality of segmented portions is separable from a second segmented portion of the plurality of segmented portions. The screen is positioned on a frame. The rod is positioned parallel to the length of the frame on two sides. A clamping mechanism tensions the screen with respect to the frame.

Abstract: An agricultural harvester has a chassis carrying a header removably attached to a feeder housing for gathering a type of crop and feeding it into the agricultural harvester. The feeder housing is connected to a threshing and separating system for separating grain from MOG, which leads to a grain cleaning system for cleaning the separated grain. The grain cleaning system has at least one sieve operable to oscillate fore and aft, and at least one cleaning fan. The grain cleaning system also has a side shaker mechanism operable to produce a side to side shaking motion. A control system is connected to the side shaker mechanism and is operable to automatically adjust the amount of side to side shaking motion on the basis of the type of crop and on the basis of the amount of side slope upon which the agricultural harvester is situated.

Abstract: A filter medium for cleaning fluids includes a filter layer (9) formed from a filter material in a pleated web with a longitudinal direction (X) and a transverse direction (Y). A plastic grid (10) forms a support layer, bears against the filter layer (9) and has linear elements (12, 14) delimiting through openings (16) between them. Two groups of linear elements (12, 14) extend approximately at right angles to one another and delimit rectangular through openings (16). The linear elements (14) having a smaller diameter (d2) are in direct contact with the filter layer (9). The linear elements (12) having a larger diameter (d1) and having a greater spacing from one another relative to the filter layer (9) rest on the smaller diameter linear elements (14).

Abstract: An apparatus and method for distributing crop material onto a cleaning sieve of an agricultural combine. The method includes providing at least one sensor configured and operable for sensing information representative of at least one of a quantity of grain associated with the crop material distributor and an inclination angle associated with the crop material distributor, and outputting signals representative thereof. The method includes providing a crop material distributor disposed between a threshing system of the combine and the sieve, for distributing crop material from the threshing system generally evenly onto the sieve. The method includes providing an apparatus operably associated with the distributor for controllably distributing crop material onto the sieve. The method includes controlling a position of the apparatus as a function of signals from the at least one sensor.

Abstract: A vibratory separator screen assembly, the screen assembly including a frame having a top surface and a bottom surface having a tapered recess configured to receive a locating element disposed on the vibratory separator.

Abstract: A product sorting apparatus is operable to sort products by inducing an oscillating or rocking motion to a plurality of sorting trays in a vertically stacked arrangement. A subset of the products in a top-most tray selectively pass to successive sorting trays. Each of the sorting trays is configured to receive and selectively transmit the selected products according to a separator or sorting panel that is disposed between an input and an output of a given tray. Each of the separator panels defines apertures that facilitate sorting of the products according to size and/or shape. The rocking or oscillating motion has an amplitude and a period according to an input from a drive mechanism, which may include a motor and drive link with a controller and/or a power switch. Optionally, a safety cage and one or more cutoff switches are provided for protecting the sorter and personnel.

Abstract: A combined auger conveyor and screening apparatus features an inlet hopper mounted to an auger housing adjacent an inlet end thereof, and a screen support frame disposed atop the inlet hopper and supporting a screen over an area of the inlet hopper. A screen drive mechanism is removably mounted to the auger housing, coupled to the screen support frame and operable to drive oscillatory motion of the screen. An angle adjustment mechanism is operable to vary a position of ground wheels relative to the auger housing in order to change an inclination angle of the auger housing and screen relative to the ground. A hydraulic circuit supplying hydraulic motors for both the auger and the screen drive mechanism comprises a control valve operable to adjust an oscillatory speed of the screen support frame.

Abstract: A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.

Abstract: A screen module for mineral material includes support structures such as cross beams or longitudinal beams for fixing the screen module to a body of a mineral material processing apparatus, and for fixing an upper screening means above the support structures, and lower longitudinal supports which are fixed below the support structures for supporting a lower screening means below the lower longitudinal supports. A processing apparatus and a processing plant.

Abstract: A drive device is provided for a screening body of a screening machine, in particular for mineral materials for crushing, such as oil sand, with a drive motor, a synchronous transmission gear which is operatively connected thereto and has at least two output shafts which rotate in pairs in antiphase at the same rotation speed with respect to one another. The drive motor and the synchronous transmission gear are mounted in a stationary manner, separately from the screening body, at the side alongside the screening body, and do not oscillate therewith. Each output shaft has a single associated horizontal shaft which has unbalance elements, and which is connected to the output shaft by means of a rotationally rigid universally jointed shaft and is arranged with its axis parallel to the adjacent shaft and transversely with respect to the conveying direction of the screening body.

Abstract: A compact mobile variable angle vibrating screen with fines diverting systems configured to accommodate variable angles and still deliver material, via a plurality of partially nested fines chutes, to a fixed location despite angular adjustment of the vibrating screen. The system comprises a diverting pan attached to the underside and at a top end of a bottom screen and centrally positioned, such that fines material which quickly passes through the several decks encounters the diverting pan instead of falling directly onto a discharge conveyor.

Abstract: Mechanical separators and screening machines, and methods for flexible sieve mat screening are disclosed. In an example configuration, a flip-flow type flexible mat screening apparatus is provided with optimized relative elevation positions for adjacent pairs of first and second mat supports. In one configuration, a portion of the first mat supports is arranged at a lowered or offset position relative to adjacent second mat supports.

Abstract: A compact mobile variable angle vibrating screen with an overhead conveyor with an inclined bottom feed support section, an independently positionable intermediate support section, and an overhead head support section where the independently positionable intermediate support section can be relocated to a new position in response to a translation of the bottom feed support structure while maintaining an angular orientation which is half of the angle of inclination of the bottom feed structure.

Abstract: A cat litter scoop has one or more adjustable screens that adjust the effective opening in a scoop portion of the cat litter scoop. In some embodiments, the cat litter scoop may include two screens, one lying atop the other, wherein at least one of the two screens is adjustable relative to the other. In some embodiments, both screens of the cat litter scoop may be adjustable. In this embodiment, one screen may be adjustable backward and forward and the other screen may be adjustable from side to side, allowing the holes of the screen to become smaller in order to capture the clumps of urine such that they would be removed from the litter material.

Abstract: Methods for automatically controlling a vibratory separator for processing drilling fluid are disclosed. The methods include introducing material to a vibratory separator, and sensing with a sensor apparatus a state parameter indicative of operation of the vibratory separator and providing a signal indicative of a value of the state parameter to a control apparatus. Then, with the control apparatus, automatically controlling the vibratory separator based on the level of the state parameter.

Abstract: The invention provides a screen module for use on vibratory screening apparatus.

Abstract: A screening module retaining assembly 10 includes a body member 12 defining a passage 14. The body member 12 further includes a locating formation 16, associated with a first end 18 of the body member 12, for engaging a screening module to assist in retaining the screening module relative to a screen deck A retaining element 20 is displaceably arranged in the passage 14, the retaining element 20 being displaceable between a first, non-retaining position in which the retaining element 20 is accessible from the first end of the body member 12 and a second, retaining position in which the retaining element 20 is received within the passage 14 and acts on at least a part of the body member 12 for retaining the body member 12 in position relative to a component of the screen deck. A head portion 22 of the retaining element 20 defines a receiving formation 40 for receiving a complementary formation of the screening module to assist in laterally retaining the screening module relative to the screen deck.

Abstract: A screen is described for use in a vibrating machine for separating solids from liquid material, comprising woven wire cloth of orthogonal warp and weft wires, tensioned and bonded to a support structure defining at least one rectangular opening across which the cloth extends. The orientation of the cloth is chosen so that the warp wires extend across the width (i.e. shorter dimension) of the opening(s). If the cloth has a square mesh and the warp wires are of greater cross section than the weft wires, the warp wires will extend across the width of the frame, and if the cloth has a rectangular mesh, the greater number of warp wires per unit length will also extend across the width of the frame, so that in each case warp wires will resist in use the stresses across the width of the central region of the or each opening.

Abstract: A single or multi-deck vibrating stackable material screening unit having a plurality of screen frames each with a plurality of compression cross members, a plurality of tension cross members, two air manifold cross members, a plurality of air operated isolation mounts, a plurality of mounting blocks, fastened to an air operated isolation mount; a vibrating screen tensioner supporting a vibrator motor and a body over and connected to the mounting blocks over all compression cross members wherein the body has a length longer than its width and the length extends from the feed inlet to the discharge spout, two relocatable removable detachable lifting mechanisms, two clevis assemblies connecting to at least two tang assemblies, and particulate falls through the screen cloth from the first screen frame to the second screen frame, while discharging a predetermined diameter particulate.

Abstract: Apparatus is provided, in or for a screen separator for sieving materials, for clamping one or more sieve screen frames within the confines of a chassis of the separator to prevent egress of material from the separator. The apparatus comprises a sheath extending around and embracing the chassis and one or more expandable elements for urging the sheath against the chassis and the screen frame(s) to impart uniform clamping pressure to the clamped elements. The sheath is designed to provide ease of mounting and release.

Abstract: A screen system 8 suitable for use in a vibratory screen apparatus 1, comprising: a screen element 11 consisting essentially of a mesh panel 19 provided with first and second elongate support members 22, 23 extending along opposite end portions 20, 21; and a support frame 12 therefore. The support frame 12 has spaced apart first and second elongate frame elements 13, 14 for engagement with said screen element support members 22, 23 and further elongate frame elements 17, 18 extending between the first and second frame elements 13, 14 for supporting the mesh panel 19. The support frame 12 is provided with at least one mesh panel support 27 provided with an elevating support surface, which tensions the screen element 11 across the support surface 27 and between the screen element support members 22, 23. The latter 22, 23 and the first and second frame elements 13, 14 are being formed and arranged for secure interengagement.

Abstract: A screen assembly having a support, the support made of composite material, and at least one layer of screening material on the support, the support having openings that are larger at the top than at the bottom (or vice versa) and/or with a base member or member extending across the bottom of the support.

Abstract: A screening machine comprises a screen frame elastically supported on a fixed base and comprising screen cheeks and screen frame crossbeams which connect the screen cheeks, a drive for oscillating the screen frame, and a swing frame elastically coupled to the screen frame. The swing frame comprises thrust rods elastically coupled to the screen cheeks, fastening components projecting from the thrust rods and extending parallel to the screen cheeks, swing frame crossbeams arranged on each fastening component which connect the thrust rods, and at least two screening surfaces formed by screening mats extending substantially parallel to each other, the screening mats being alternately compressed and stretched in sections by being alternatingly fastened to the swing frame crossbeams and the screen frame crossbeams.

Abstract: An apparatus is proposed for separating coarse grain and fine grain with a screen (1) made of screen bars (3) which are situated successively adjacent to one another and slope downwardly in the conveying direction (2) of the coarse grain and with a support (4) for the screen bars (3) which are fastened to one end of the support (4) and can be excited to performed oscillations by the material to be screened. In order to ensure an especially favorable screening effect at low maintenance and production costs it is proposed that the bar-like support (4) is held in a frame (6) in a manner torsionally resilient about its longitudinal axis (5) extending transversally to the screen bars (3) and that the screen bars (3) are arranged in at least two rows disposed successively in the conveying direction (2) of the coarse grain.

Abstract: A support apparatus for supporting at least one screen assembly of a vibratory separator, the vibratory separator having seal apparatus for sealing an interface between a portion of the at least one screen assembly and an interior surface of the support apparatus, the seal apparatus including a seal member removably held by a seal holder within the vibratory separator, the support apparatus including container apparatus having a side wall, the side wall having an opening therethrough adjacent an end of the seal apparatus, and a cover removably connected to the side wall on an exterior surface thereof, the cover removable to provide access to the seal apparatus.

Abstract: A method for making a screen assembly for a vibratory separator, the method including, in at least certain aspects, gluing together with glue at least two layers of fine screening material, allowing the glue to set, preheating the glued together at least two layers of fine screening material, placing the thus-preheated at least two layers of fine screening material in a heating apparatus, placing a coarse mesh layer on the at least two layers of screening material on the heating apparatus, placing on the coarse mesh layer a support with heat activated material thereon for adhering the support to the coarse mesh layer, and heating the coarse mesh layer, at least two fine layers of fine screening material, and the support to adhere the support to the coarse mesh layer and to glue the at least two layers of fine screening material to the coarse mesh layer.

Abstract: A hybrid incline/horizontal screen for separating particulate material into predetermined size fractions, the screen having multiple screen decks mounted on a frame, at least one uppermost screen deck having an inclined receiving end and a horizontal discharge end. Each screen deck has a screening medium with predetermined sized openings that screens the particulate material. The screen decks are in stacked relationship, the upper screen deck having the largest screen medium openings, the openings becoming progressively smaller the lower the screen deck is mounted on the frame. The inclined receiving portion of the one or more uppermost screen decks provides for rapid material separation and conveyance through the upper screen decks to the lower screen decks while the horizontal discharge end reduces the tendency for the material to pile up (snowball) and maintaining a more uniform material bed, while providing for a shorter, more transportable screen.

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 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: Methods for making frames for screen assemblies for vibratory separators, and screen assemblies with such frames, the methods, in certain aspects, including making a frame support for a screen assembly for a vibratory separator (e.g. but not limited to with robotic welding apparatus), moving the frame support to cleaning apparatus to clean the frame support, heating the frame support, moving the heated frame support to coating apparatus, coating the frame support in the coating apparatus with protective material, allowing the coated frame support to cool so that the protective material sets, moving of the frame support in one aspect done by mechanical movement apparatus; and, in certain aspects, adding screening material to the frame to produce a screen assembly.

Abstract: A vibratory screen separator using screens includes a base and a housing resiliently mounted to the base and divided into two wall portions held together by a clamp band. Brackets are located high on the housing and lifts are diametrically positioned to either side of the housing. The lifts are pivotally mounted to the base through feet to move from a first position engaging the brackets to a second position displaced from the housing. Each lift includes a fluid cylinder and shaft mounted to an arm. A head associated with the shaft of the fluid cylinder and shaft engages a slot on the associated bracket and can operate to lift a portion of the housing with the clamp band removed. In this lifted state, access is provided to screens clamped within the housing between housing portions.

Abstract: A screen support for supporting screening material of a screen assembly for use on a shale shaker for separating components of material introduced thereto, the screen support having a body, a plurality of spaced apart holes through the body, each of said holes for receiving part of a fastener used for releasably connecting the screen assembly to a shale shaker; the screen support in certain aspects being a frame, a perforated plate, a strip support or a unibody structure; a screen assembly with such a support; such a screen assembly, in certain aspects, with a plastic grid or layer with corresponding fastener holes; a shale shaker with any such screen assembly; and methods of their use.

Abstract: A method for making a screen assembly for a vibratory separator, which, in certain aspects, includes placing a first layer of screening material below a glue application apparatus, and applying with the glue apparatus an amount of glue in a pattern to a portion of the first layer of screening material, unrolling part of a second layer from a second roll and positioning the part of the second layer adjacent part of the first layer to which glue has been applied, moving the part of the second layer and the part of the first layer between opposed rotatable spaced-apart rollers to press together the part of the second layer and the part of the first layer to form a pressed-together layer of first and second layers of screening material. In certain aspects hot glue is used and is cooled following application of the second layer on the first layer.

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 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: The invention provides a method for exchanging a plurality of sifter frames of a plan sifter. The steps of the method include a step, when taking out a number of sifter frames from a sifting chamber, of taking out a plurality of sifter frames in a unitary state with the unitary state being maintained to the outside of the machine frame, and a step, when accommodating new sifter frames in the sifting chamber, of stacking the sifter frames outside the machine frame and accommodating the unitary formed sifter frames in the sifting chamber. According to the method of the invention, the sifter frame exchange operation can be carried out in such a way as to reduce heavy labor and risk to workers, and such exchanging operation can be carried out in an easy manner.

Abstract: A vibratory screening machine such as used for separating solid particulate material from drilling mud to allow the latter to be re-used, is described. The general form of the construction is similar to that of the VSM100 shaker machine as supplied by the applicant company, but significant differences in the design and construction of the new unit allow a higher throughput of mud to be accommodated. An upper filtering screen (88) extends generally horizontally and serves to separate out the larger particles from the rest. The slurry which passes down to the lower screen (90) (of finer mesh than the upper screen) is further filtered and a mud-like residue of particulate material slowly accumulates on the lower screen (90) and migrates up the screen--to be discharged at the upper outlet end thereof, while liquid material filters through the screen to be recovered in a sump below.

Abstract: A deck finger assembly for vibrating screening apparatus which includes a plurality of rod-shaped finger members that are secured in a resilient block that is compressed between a pair of clamping plates. The resilient block includes a plurality of through-holes through which the rod-shaped finger members are inserted. When the pair of clamping plates are drawn together and compress the resilient block, the through-holes in the resilient block contract radially inward and tighten about the rod-shaped finger members. By releasing the clamping plates and the compression force exerted thereby on the resilient block, the rod-like finger members can be removed and replaced as desired.

Abstract: A screening plant including a housing to which first and second screen boxes are reciprocatably mounted. The screen boxes are coplanar and the inner peripheral edge of the first box is adjacent the inner peripheral edge of the second box. Separate prime movers, such as hydraulic motors, are drivingly linked to the independently mounted screen boxes. The screen boxes are separated by a gap over which a beveled cap is mounted.

Abstract: Screen assemblies having a plurality of supports assembled with peripheral screen frames with screen cloth extending fully over the assemblies. The supports are assembled with each other and with the screen frame using dovetail mechanisms. Each support includes a cell structure having walls defining open cells. The walls have an elongate cross section to provide thickness to the structure. A thin support grid is integrally formed with the walls with the top of the support grid and the top of the walls lying in the same plane. The top of the surrounding frame also lies in this plane. The walls and the frame each have energy directors for ultrasonic bonding to the screen cloth laid over the assembly. The lower edge of the walls and of the screen frame also lie within a plane and have energy directors for receipt of a larger mesh closure screen to retain self-cleaning sliders or elements within the cells. The cells have no straight edges in plan.

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 vibrating screen for the sizing of granular material such as gravel, sand, crushed stone, etc., having a frame (1) and a screen body (2) supported on springs (6), directional oscillating movements being imparted to the screen body by a motor powered vibrator mechanism (3). The screen has two or more screen decks (11-13), each one divided into three component screens (14a-c, 15a-c, 16a-c) having successively decreasing inclinations in a direction towards the discharge end (9) of the screen, each lower screen deck furthermore having an increased inclination in relation to the nearest deck above.

Abstract: A convertible vibratory material separating apparatus, and kits to convert the apparatus to a woven-screen or finger-rod upper separating surface. The separating apparatus includes a universal shaker head adapted for vibratory movement within a frame with a tall and short end. The shaker head includes side plates and a centerplate, and removable support rails or plates when the shaker head is converted to finger-rod combs for a separating surface. The shaker head includes flanges on a lateral support tube enclosing an eccentric motor driven shaft and flanges when the shaker head is converted to a woven-screen upper separating surface. The kits include right angle flanges, bars and plates for conversion of the shaker head with woven-screens or combs of finger-rods.

Abstract: A waste material separating apparatus and method of separating waste landfill material which apparatus and method includes a frame and a vibratory screening deck or tier within the frame, the screening deck having a plurality of generally parallel, straight rod elements to act as bludgeons on the waste material. The rod elements are removably extended from a transverse rail. Waste material to be separated into a coarse material and a finer material is discharged onto the rod element. The separating apparatus has an eccentric rotating shaft secured to the deck to impart vibratory motion to the rod elements so that the free ends of the vibratory fingers vibrate in a generally vertical direction, and bludgeon and break up the compacted solid waste landfill material.

Abstract: A grid structure and screen device including the grid structure are provided for a vibrating shaker for filtering solids out of a moving fluid stream passing across this screen device. The grid structure has openings defined by intersecting lines of substantially continuous solid grid lines forming an angle. The angle formed at the intersection being from between less than 90.degree. and more than 0.degree., such that the grid structure fatigued resistance is enhanced while providing maximum open area therethrough.

Abstract: A vibrating screen apparatus for effecting screening of materials includes a frame with first and second vibrating screen deck units mounted one above the other in it. To provide maximum flexibility of operation, the vibrating deck units are pivoted at the material feed end on the frame. Hydraulic cylinders are attached between the free ends of the first and second vibrating screen deck units and the frame for independently varying the angle or slope of each of the deck units, relative to the frame, for adjusting the dwell time of material passing over the deck units. A flexible corrugated rubber curtain extends between the upper deck unit and the lower deck unit to ensure that material which passes through the upper deck unit is guided onto the surface of the lower deck unit. In addition, each of the vibrating screen deck units has an independent vibrator mechanism on it; so that the vibration rate and magnitude may be independently adjusted for each of the deck units in the system.