Abstract: A rotary sieve cleaning shoe for cleaning grain, having at least one rotary sieve with a generally cylindrical volume arranged to rotate around a longitudinal axis and having at least one beater bar within the cylinder which remains stationary when the rotary sieve rotates.

Abstract: A sieving device is described. The sieving device includes an adjustable sieve surface that includes a first sieve surface and a second sieve surface. Openings are formed in each of the first sieve surface and the second sieve surface so as to define a shared pathways extending through the adjustable sieve surface. The shared pathways are defined by a length dimension that is greater than a width dimension. The width dimension can correspond to a cephalothorax width of an insect.

Abstract: A rotor and cage assembly includes a skeleton of curved spaced-apart side members affixed to laterally extending upper and lower spaced-apart members therebetween and surrounding the rotor. One of the curved spaced-apart side members is terminated with curved fingers. Three concave inserts insert laterally into the skeleton spanning 270° around the rotor. One of the concave inserts carries straight fingers that interlace between the skeleton side member curved fingers. A control assembly of plates having arcuate slots placed at 3 of the pivots of the skeleton assembly, 3 control bars connected to the skeleton pivots, and an actuator is connected separately to each control bar at one end effect arcuate rotation of the control bars resulting in the synchronized rotation of the arcuate slotted plates so that the interlaced straight fingers move closer together or farther apart with the fixed skeleton assembly curved fingers for different types of grain.

Abstract: A harvester cleaning system may include louvers, a bar, louver wires connected to the louvers and an adjustment arm. The bar may include spaced rails and rungs between the rails, wherein the rungs form pockets along the bar. Each of the louver wires may have a main portion about which the louver wire pivots and a lever portion received within one of the pockets. The adjustment arm may include slots receiving the lever portion of each of the louver wires, wherein the adjustment arm is movable to pivot the louver wires to pivot the louvers.

Abstract: A rotor and cage assembly includes a skeleton of curved spaced-apart side members affixed to laterally extending upper and lower spaced-apart members therebetween and surrounding the rotor. One of the curved spaced-apartside members is terminated with curved fingers. Three concave inserts insert laterally into the skeleton spanning 270° around the rotor. One of the concave inserts carries straight fingers that interlace between the skeleton side member curved fingers. A control assembly of plates having arcuate slots placed at 3 of the pivots of the skeleton assembly, control bars connected to the skeleton pivots, and an actuator connect to the control bars at one end effect arcuate rotation of the control bars resulting in the synchronized rotation of the arcuate slotted plates so that the interlaced straight fingers move closer together or farther apart with the fixed skeleton assembly curved fingers for different types of grain.

Abstract: Representative implementations of devices and techniques provide improved material flow for an agricultural vehicle, such as an overland combine harvester vehicle, for example. A sieve of the vehicle is modified with one or more baffles to reduce the quantity of harvested grain that is returned as tailings to the cleaning process during a harvesting pass.

Abstract: A screen panel with wear protective apertures for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screening surface having suitably designed apertures of desired shape for allowing materials of desired size to pass through, said apertures having walls made of abrasion resistant material such as herein described said walls having plurality of slits(1) cut along the vertical as well as horizontal line in the top and bottom portion of the apertural walls, whereby utmost flexibility of the apertures is ensured simultaneously ensuring wear protection.

Abstract: A vibratory screening machine having opposite sides with a plurality of stationary aligned tensioning members mounted on one side and a plurality of nut actuated movable tensioning members mounted on the opposite side and a vibratory screening screen mounted on the stationary and movable tensioning members. The tensioning members have upstanding fingers which are received in apertures in the plates of the vibratory screen, and the edge portions of the vibratory screen include screening material which extends all of the way to the extreme edges of the supporting plate and the fingers are below the screening material. Also, the tensioning structure is mounted on the side walls of the vibratory screening machine below the vibratory screen.

Abstract: An adjustable orifice trommel having an elongated body rotatable about an axis, an entry for insertion of particulate material, and an exit for retrieving screened material. The trommel includes a plurality of flat inner plates, each inner plate having a plurality of openings. An outer plate is provided for each inner plate slidable axially in relation to the inner plate, each outer plate having a plurality of openings matable with the inner plate openings so that moving the outer plate with respect to the inner plate will vary the size of the orifices.

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

Abstract: A filtering screen is described comprising: a first filter mesh, a second filter mesh having a different mesh size from the first and overlying the first mesh, and an apertured support to which both of the meshes are bonded so as to maintain the two meshes in tension, the tension in one of the meshes being greater than that in the other. At least one other filter mesh may be bonded over the first two meshes. The support may comprise a plate of fiber reinforced material having apertures formed therein which are much greater in area than the openings in the filter mesh, or a sheet of metal in which apertures are formed and in which edge regions of each aperture are turned through approximately 90.degree. to extend normal to the plane of the sheet from the underside thereof to increase the rigidity of the sheet. The frame may alternatively be a honeycomb structure or an apertured metallic plate, the filter meshes being joined to the surface of the frame.

Abstract: It is an object of the invention to provide a unit for discharging material, such as lengths of paper strip from an air stream. As shown in FIG. 1, a flow of air with suspended waste material enters, as illustrated by the arrow 1, along a duct 2. The flow is into an entry section 4 of a perforated duct 5 located within an outer casing 6 which forms an air duct. At the downstream end, the duct 5 leads into a bend section 7 which is perforated on the outside of the bend and at the sides. The flow of air or gas continues out of the open end 8 of the casing 6 as indicated by the arrow 9, while the suspended solid material is deflected by the bend section into a discharge duct 11, down which the solid material falls by gravity. The duct 11 is shown as including two pairs of optional isolating flap valves 12 so as to provide an air lock arrangement so that the air flow in the duct 11 is substantially zero.

Abstract: An apparatus for removing stone and gravel from excavated soil by vibration. The apparatus is particularly useful for operation at the foot of a volcano, mountainous district or the like. Characteristic features of the apparatus are that it is self-propelled by means of endless tracks and the excavated soil is separated into stone, gravel and soil with the aid of a sieving means and the separated stone and gravel are discharged from the apparatus by way of a conveyor, while the separated fine soil is conveyed by way of another conveyor and then is scattered rearward by means of a scattering device to be piled up on the working ground.

Abstract: Separator apparatus for separating out the insolubles and pulpy material from a container washing solution in a rotary screw separator apparatus which is provided with means to extend the useful life of the apparatus and maintain efficient separation by adjustment of the separator screen to restore as nearly as possible the original working clearance of the screen about the rotary screw.