Abstract: A mobile screening device for the screening of soil and other materials has a chassis (1), which is carried by at least one wheel (1.1) or a similar member, and a screen frame (2), which is carried by the chassis (1) and which includes at least one screen (5) that is supplied with material to be screened. The screen frame (2) is pivotable around a primarily vertical turning axis (7) in relation to the chassis (1).

Abstract: A screening bucket includes a support structure securable to the moving arm of an operating machine, a screening drum secured to that structure allowing it to rotate about an axis, a rotation unit for the screening drum and switching device for the rotation unit that switches the rotation unit between a first operating mode in which the screening drum is set in rotation at a substantially constant predetermined working speed and a second operating mode in which the rotation speed of the screening drum is reduced. The rotation unit further includes a detector assembly for detecting an angular position of the drum, cooperating with the switching device such that the rotation unit is automatically brought into the second operating mode when the drum is situated in the region of at least one predetermined portion of a revolution.

Abstract: A solids sifting apparatus comprising a bucket assembly comprised of a back wall and a bucket framework joined to the back wall and extending forwardly therefrom. The bucket framework defines a lateral side wall comprised of a plurality of openings, and a forward perimeter defining a front opening. The apparatus is further comprised of a rotational assembly comprising a mounting fixture comprising at least one attachment feature, a rotatable driven member joined to the back wall of the bucket assembly, a rotatable driving member coupled to the rotatable driven member; and a rotary drive power source operatively connected to the rotatable driving member and joined to the mounting fixture. The mounting fixture may include attachment features. A first attachment feature may comprise an upper lip extending rearwardly and downwardly from a mating plate, with second and third attachment features comprising first and second brackets extending outwardly from the mating plate.

Abstract: A cooler for particulate product includes a substantially enclosed housing. A first cooling screen is disposed in the housing and is configured to receive the product. The first cooling screen is configured to move the product along a surface by gravity when the first cooling screen vibrated. A duct is coupled to the first cooling screen to move cooling fluid through the first cooling screen. A second cooling screen is disposed in the housing below the first screen and is configured to receive the product after discharge from the first screen. The second screen is configured to move the particulate product along a surface when vibrated. A second duct is coupled to the second screen to move cooling fluid through the screen. A collector receives the particulate product after moving along a surface of the second screen. A vibrator is coupled to the housing and vibrates the housing.

Abstract: Apparatus for removing debris from a fluidized sand bed. One or more troughs extend radially from a vertical shaft. Associated with each trough is a perforated chute. The apparatus is placed into the fluidized bed of sand, and rotated. As the apparatus rotates, the perforated chute sifts, or separates, debris from the fluidized sand. That is, the fluidized sand flows through the perforations, but the debris does not. When the apparatus is removed from the fluidized bed, the debris tumbles down the chute, into the troughs, if it has not already done so, and is captured.

Abstract: A system for screening fluid-borne material from a fluid that carries particulate matter along with the material, e.g. for screening usable fibers in papermaking or tissue making white water that also contains waste material such as fines and ash. The system employs a flexible and pliable screen to which the fluid is applied. The screen is supported in a suspended manner from a frame. The fluid is directed onto an inside surface defined by the screen, and the location at which the fluid strikes the screen is varied so as to result in bending and flexing of the screen due to the flexibility and pliability of the screen material. In this manner, the configuration of the screen drainage passages is continuously altered, to provide a self-cleaning action that prevents the screen passages from plugging or blinding over. In one form, the screen is generally frustoconical, and the fluid is applied to the inside surface of the screen in a manner which results in rotation of the screen.

Abstract: Apparatus for removing debris from a fluidized sand bed. One or more troughs extend radially from a vertical shaft. Associated with each trough is a perforated chute. The apparatus is placed into the fluidized bed of sand, and rotated. As the apparatus rotates, the perforated chute sifts, or separates, debris from the fluidized sand. That is, the fluidized sand flows through the perforations, but the debris does not. When the apparatus is removed from the fluidized bed, the debris tumbles down the chute, into the troughs, if it has not already done so, and is captures.

Abstract: A method of attenuating the sound emanating from a bank of a plurality of vibrating screens of a plurality of vibrating screening machines including the steps of providing a master pulse of known phase and frequency, comparing the phase and frequency of a plurality of vibrating screens with the known phase and frequency of said master pulse, and adjusting the phase and frequency of said bank of plurality of vibrating screens so that the waveforms produced thereby tend to cancel each other. An apparatus for implementing the method is also disclosed.

Abstract: Apparatus for removing debris from a fluidized sand bed. One or more troughs extend radially from a vertical shaft. Associated with each trough is a perforated chute. The apparatus is placed into the fluidized bed of sand, and rotated. As the apparatus rotates, the perforated chute sifts, or separates, debris from the fluidized sand. That is, the fluidized sand flows through the perforations, but the debris does not. When the apparatus is removed from the fluidized bed, the debris tumbles down the chute, into the troughs, if it has not already done so, and is captures.

Abstract: Apparatus for removing debris from a fluidized sand bed. One or more troughs extend radially from a vertical shaft. Associated with each trough is a perforated chute. The apparatus is placed into the fluidized bed of sand, and rotated. As the apparatus rotates, the perforated chute sifts, or separates, debris from the fluidized sand. That is, the fluidized sand flows through the perforations, but the debris does not. When the apparatus is removed from the fluidized bed, the debris tumbles down the chute, into the troughs, if it has not already done so, and is captured.

Abstract: A system for recovering and recirculating usable fibers contained in papermaking white water. The system employs a flexible and pliable screen to which the papermaking white water is applied. The screen is supported in a suspended manner from a frame. The white water is directed onto an inside surface defined by the screen, and the location at which the white water strikes the screen is varied so as to result in bending and flexing of the screen. In this manner, the screen openings are self-cleaned, to prevent the screen from plugging due to material contained in the white water. In one form, the screen is generally frustoconical, and the white water is applied to the inside surface of the screen in a manner which results in rotation of the screen. The usable fibers are directed toward a discharge opening defined by the lower end of the frustoconical screen, and the waste water passes through the screen and is collected in a waste water collection tank.

Abstract: Apparatus for removing debris from a fluidized sand bed. One or more troughs extend radially from a vertical shaft. Associated with each trough is a perforated chute. The apparatus is placed into the fluidized bed of sand, and rotated. As the apparatus rotates, the perforated chute sifts, or separates, debris from the fluidized sand. That is, the fluidized sand flows through the perforations, but the debris does not. When the apparatus is removed from the fluidized bed, the debris tumbles down the chute, into the troughs, if it has not already done so, and is captured.

Abstract: An agglomerator structure, used in conjunction with a sifting structure, is described to provide variable sized agglomerates and uniform agglomeration, using at least one cone, with apex pointing toward the feed flow, and an inverted cone with a screen below. The agglomerator structure is provided to enable convenient use in a sanitary environment, with the system including an agglomerator cone above the inverted cone, which defines a central opening for feeding the material to one or more screens. The system is primarily designed for use with a vibration-imparting structure to better enable use in a sanitary environment.

Abstract: In order to wash inert materials, even of a large size, with a limited amount of washing liquid and with a lesser consumption of energy and without moving metal parts, apparatus having a plurality of tubular rotors (1) which are in side-by-side relation but spaced a distance from each other and are rigidly locked with a common shaft (13) which is horizontal or at an angle with respect to the horizontal, in which each rotor (1) has a plurality of transverse annular baffle plates (2) adapted to delimit corresponding annular channels (3) and having in each channel (3) a plurality of peripheral boxes (15). As the rotors (1) revolve, the washing liquid overflows to the outside over the lower baffle plate (2) of each rotor (1) and the material being washed, which is introduced through the mouth of the rotor (1) located at one end of the apparatus, advances against the current through all the rotors (1) until it is discharged from the mouth of the rotor (1) located at the other end.

Abstract: The present disclosure is directed to a ground-leveling and separating device for use with a front end loader having a loader bucket. The device has a blade backing trowel member having a pair of end walls and an upstanding rear wall defining an open ended box-like structure with a rod extending across the top of its open end. A pair of transversely spaced dividers having front to rear openings lie between the end walls and an attaching means has one end adapted to be connected to the rear of the front end loader bucket and the other end connected to the rear of said device, and an attaching means is connected proximate the forward end of the device at each of its ends and is adapted to be passed over said front bar at its other end and passing freely through the openings in said spaced dividers so that said ground-leveling and separating device could be selectively angularly oriented relative to said bucket and line of draft.

Abstract: A receptacle for holding a quantity of litter material and for the deposit of refuse. A sifting screen is mounted on mechanism for movement through the bed of litter to sift therefrom the accumulated refuse, leaving the litter bed for further use. In another form, the litter container is configured to be tilted to pass the litter through a centrally placed sifting screen.

Abstract: A magnetic separator is formed of a number of substantially parallel filter discs which are attached on a rotatable shaft extending radially therefrom with gaps between the discs. The discs are arranged to produce local magnetic field inhomogeneities in the gap between the discs. Stationary scraper means in the form of channel-like bodies of plastic material are arranged between each pair of discs with their free edges engaging the opposed faces of the discs. An endless belt is arranged to run in the channel for carrying out the material scraped from the discs to the outside.