Abstract: A cyclone separator for separating fine particles or dust from a gas stream comprising a main separator chamber 11 having a tangential gas inlet 10 to form a circulating gas vortex about an axis 12, and a gas outlet opening 19 aligned with the vortex axis at one end of the chamber and communicating with a main gas outlet duct 20. Within the main separator chamber 11 there are positioned baffles or vanes 14,15 which separate off the heavier solid particles into a hopper 13 below the chamber. Adjacent the outlet aperture 19 is an annular opening 21 which communicates with a subsidiary casing 22 having a tangential outlet 23. Fine particles are therefore flung outwards by centrifugal force into the casing 22 and are then separated in a further cyclone separator 25.

Abstract: A portable loam screening apparatus includes a nearly-square sloping shaker screen supported by a box-like frame. The frame has a tall end and a short end joined by two sides. Funneling surfaces directed toward the screen are provided along the upper edges of the tall end and the sides. The short end is closed to provide a wall between separated loam and coarse material. A mixture of loam and coarse material is dumped onto the shaker screen from the shovel of an excavating vehicle. The coarse material falls from the lower end of the shaker screen outside of the frame, and the loam passes through the shaker screen to within the box-like frame. The separated loam falls down a sloping table within the frame and can then be retrieved by an excavating vehicle through the open tall end of the frame. A set of wheels mounted to one side of the frame is moveable relative to the frame from an operative position for transporting the apparatus to an inoperative position for resting the frame flush on the ground.

Abstract: A classifying apparatus for a suspension, especially for a pulp suspension, having a screen drum, means for feeding the suspension to one side of the screen drum, for removing thickened suspension from the same side of the screen drum and liquid from the opposite side of the screen drum, blades inclined in relation to their direction of rotation so that any one of the ends of the inclined blades is substantially on the same screen drum line parallel to the screen drum axis as the opposite end of some other blade and fitted to sweep at least one surface of the screen drum, and driving means for moving the blades in relation to the screen drum.

Abstract: A bi-directional filter drier is provided for reverse flow applications as encountered, for example, in heat pump systems. The filter drier includes a shell defining a chamber, the shell having an inlet and an outlet, preferably axially aligned with one another, which communicate with the chamber. A suitable filter means is positioned in the chamber and a fluid flow path within the chamber is designed so that fluid flow through the filter always occurs in a single direction, regardless of the direction of flow through the inlet and outlet. Flow within the chamber and thus the filter is controlled by a simply constructed valve combination at the inlet and the outlet.

Abstract: An apparatus for separating slack-filled capsules from properly filled capsules having the same surface area comprising:an endless conveyor belt;means for continuously moving the belt on which is contained at least a single layer of capsules;an inclined plane at the terminal end of the belt;a sorting box consisting of a series of fins for orienting the largest cross-sectional area of the capsule profile;a tunnel whose terminal end is adjacent to the box;means for creating laminar air flow through the tunnel;a first tube aligned in about a horizontal position with the tunnel for receiving said slack-filled capsules;a second tube aligned in about a vertical position with the sorting box such that properly filled capsules enter by gravity;such that when the laminar air flow is created through the tunnel, the slack-filled capsules enter the first tube.

Abstract: Aeration flotation bar comprising a shaft mounted in a tank for rotation about a vertical axis and having a plurality of wedge configured bar members. Air through the shaft is distributed lengthwise through each wedge bar member simultaneously and from each wedge bar member is emitted as a fine jet through multiple jet bores formed in the trailing surface of the wedge bars. The fine air jets create a large mass of fine air bubbles which in the aggregate provide more surface for material such as coal or other flotable materials to adhere to thereby increasing the reclamation output of the tank or cell and increasing the efficiency of the tank or cell. In addition, the location of the fine jets are such that the fine air jet streams act on the area of the tank or cell where sanding is most likely to occur and thus eliminate or minimize the sanding tendency.

Abstract: A centrifuge for continuously separating a lubricating liquid from lubricaton-impregnated metal chips. A motor having a drive shaft thereon is mounted so that the drive shaft is drivingly coupled to a substantially bell-shaped centrifugal separator bowl having a bottom wall and an outwardly widening conical portion. The separator bowl is formed with openings intermediate the top edge and bottom wall for discharge of the liquid therethrough. A plurality of blades may be mounted on the separator bowl adjacent the top edge and are movable therewith for effecting a movement of air into an annular collecting structure from the air inlet and out through the outlet duct to effect an entrainment of the metal chips in the air movement for discharge out through the outlet duct. The bottom wall of the separator bowl has a bottom wall liner with a plurality of radially extending blades thereon on top thereof.

Abstract: A centrifuge for continuously separating a lubricating liquid from lubrication-impregnated metal chips. A motor having a drive shaft thereon is mounted so that the drive shaft is drivingly coupled to a substantially bell-shaped centrifugal separator bowl having a bottom wall and an outwardly widening conical portion. The separator bowl is formed with openings intermediate the top edge and bottom wall for discharge of the liquid therethrough. A plurality of blades may be mounted on the separator bowl adjacent the top edge and are movable therewith for effecting a movement of air into an annular collecting structure from the air inlet and out through the outlet duct to effect an entrainment of the metal chips in the air movement for discharge out through the outlet duct. The bottom wall of the separator bowl has a bottom wall liner with a plurality of radially extending blades thereon on top thereof.

Abstract: A pair of screens are arranged one behind the other and served by a common cleaning rake for the removal of the screenings from both screens in a single operating step.

Abstract: A rotary screen appliance for the sifting of sand at a construction site is fittable directly to the mouth of a motorized driving device such as a cement mixer. A dismantable screen cage is connected to an armature preferably having three guide arms. A fastening portion is slidably attached to each guide arm and extends at an acute angle therefrom such that the fastening portions may engage the mouth of a cement mixer and thereby lock the screen cage thereto. Rotation of the cement mixer causes rotation of the screen cage. A device for rapping on the screen cage and thereby shaking it as it rotates is also provided.

Abstract: Simple, flow regulating tap-off means are provided in the bottom of a helical eluent supply conduit which is co-axial with a helical separator sluice in a gravitational separator. The tap-off means is an insert in the floor opening of the eluent conduit having an aperture in the insert and an inner lip at the top of the insert that does not extend above the floor of the eluent conduit. A portion of the inner lip is broken away to facilitate directing the eluent to flow through the aperture. Rotating the insert varies the amount of the broken away portion in contact with the downward flowing eluent which in turn regulates the amount of eluent flow through the aperture.

Abstract: A selective and effective collection of noninhalable and/or nonrespirable particulates employs inertial impaction to separate particles larger than a specified size from smaller particulates in an airstream and to collect them on a moving adhesive collection surface. A unique U-type impaction configuration is used.

Abstract: A grain scalping and cleaning apparatus for removing impurities in grain according to size is disclosed. The apparatus includes multiple grain movement paddles moving relative to appropriate screens. An endless chain drives the grain movement paddles. Both large and small impurities are separated from the grain through the use of the screens and paddles with the aid of gravity. A method for removing impurities in grain is also disclosed.

Abstract: A multi-part fluid filter housing having first and second parts and being arranged to contain a replaceable filter element includes complementary frusto-conical mating surfaces between the two parts. The two parts are held together by a screw threaded ring which is screwed onto the outer face of the first part and which includes an internal flange engaging an external flange on the second part. The second part is tapered to improve the flow characteristics of the housing and preferably includes a taper of between 1 and 2%.

Abstract: A pneumatic material separator having adjacent generally vertical sorting ducts and a generally vertical discharge duct communicating with the tops of the sorting ducts is disclosed. Particulate material introduced into a first sorting duct is separated by an upwardly moving column of gas into an upwardly moving lighter fraction and a downwardly moving heavy fraction. The light fraction is carried to a position over a second sorting duct where the gas velocity is reduced. The heaviest particles of the lighter fraction fall into the second sorting duct while the remainder of the lighter fraction is discharged through the discharge duct.

Abstract: Apparatus for use in froth flotation comprising at least four parallel upright partition walls defining flotation columns within a receptacle. Below each partition wall is a froth generator driven by a shaft passing through the thickness of the partition wall. Rods of differential buoyancies divide each flotation column into flotation cells in such a way as to permit froth to pass upwardly from one cell to another in a controlled manner maintaining a predetermined froth thickness in each cell.

Abstract: Centrifugal separating apparatus comprising a concentric inner and outer housing enclosing a swirling chamber through which a steam-water mixture is directed to separate the water from the steam. The inner housing encloses a first set of vanes that impart a rotary movement to the steam-water mixture accompanied by a centrifugal action sufficient to separate water from the steam and move it outward through perforations in the inner housing. A second set of inclined vanes in the space between the inner and outer housing members serve to swirl the water and remove residual steam therefrom before it is recirculated.

Abstract: A flotation cell having a submerged screen for breaking up mineral-laden air bubbles to reduce refuse entrainment and a rotating rake to break up the surface froth to return mechanically entrapped refuse which has escaped the screen.

Abstract: An apparatus for separating coarse and fine particles of intermediate specific gravity from an aggregate containing said particles of intermediate specific gravity as well as fine and coarse particles of higher specific gravity by use of a liquid of lesser specific gravity than any of said particles, which apparatus includes a pair of inclined, axially rotating, concentrically disposed helical ribbon flights separately secured within an annular housing such that the rotating action of said flights transports the fine and coarse particles of heavier specific gravity out of the flowing aggregate slurry. The fluid is then drained from the intermediate specific gravity particles passing with the fluid through the lower end of the annular housing in a screened cylinder.

Abstract: Severed metal bearing ore is placed in a vessel having a water inlet at the bottom and an outlet at the top. A propeller causes water to flow upwardly through the vessel and to be discharged through the outlet carrying gangue with it. Concentrate, which is heavier because it contains the metal to be recovered, does not rise to the level of the outlet and therefore remains in the vessel. A member, which can be floated on the top surface of the water, inhibits turbulence and suppresses the formation of a vortex, thereby contributing to the formation of a calm water region at the top of the vessel for improved separation. Water turbulence can be further inhibited by a screen placed across the vessel between the propeller and the floating member.