Abstract: This is an oil mist remover used in purifying polluted air containing oil mist generated in a factory or the like, which is capable of lessening the load of the filter, preventing deterioration of the filter, and maintaining a high efficiency if used for a long period, by removing large particles of oil mist and dust contained in the air inhaled from the suction hole before adsorption on the filter. It is composed of main body case, straightening box having a suction hole provided before the main body case, ventilation chamber having exhaust means behind the main body case, and drain chamber having liquid discharge means provided beneath the main body case, in which means for interrupting the straightforward move of the inhaled air is provided inside the suction hole, and the oil mist depositing on this means is dropped, and is collected in the drain chamber to be discharged.

Abstract: A self cleaning rotary screen of an agricultural combine is provided with a planar circular screen that is secured to an outwardly extending circular flange having an external groove and an internal groove. The screen is rotatably coupled to a pivotable door by a plurality of freely rotatable wheels which engage the internal groove of the flange. Also secured to the door are two freely rotatable idler sheaves located adjacent to the pivot axis of the door so that the centerpoint of the endless belt when coupled to the outer periphery of the sheaves forms a tangent axis that is substantially aligned with the pivot axis of the door. A driving sheave is operatively coupled to the propulsion system of the combine and is provided with a central rotational axis that intersects the tangent axis of the idler sheaves.

Abstract: An oil mister remover used in purifying polluted air containing oil mist generated in a factory or the like, composed of a main body having a suction hole, a ventilation chamber having an exhaust provided in the main body and a member having liquid discharger provided in the main body. The ventilation chamber is formed gradually larger in diameter toward the rotating direction of the fan, the inner edge of a suction guide for guiding the air into to the fan is curved so that the diameter may be larger than the fan and a drum having a rotary filter is provided in the main body. Multiple tiny holes are formed in the drum provided in the main body, and a curvature is formed beneath these tiny holes.

Abstract: A multilayer filter pack includes at least three adjacent layers of fibrous material, each of which is permanently electrically charged and not more than 10 mm thick. The upstream and middle layers are formed from fibers having a fiber diameter that decreases from layer to layer in the direction of flow and are arranged at a packing density that increases from layer to layer in the direction of flow. The third layer has a fiber diameter and packing density that is approximately equal to the fiber diameter and packing density of the first layer. The multilayer filter pack is particularly well suited for use in air-purifying systems and breath protection filters.

Abstract: An air filtering mechanism for use on crop harvesting machinery having a generally cylindrical, rotary, perforate filter element, a fan operable to draw air therethrough, drive means operable rotatably to drive the filter element, and blanking off means mounted within the filter element for blanking off the perforations thereof over a predetermined region, is disclosed wherein a duct having an open portion is provided exteriorly of the filter element opposite to the blanking off means, A pressurized flow of air from the fan is directed through the duct in the form of a cleaning air blast in a direction parallel to the external surface of the filter element to clean foreign matter collected on the filter element in the region of the blanking off means by virtue of the filter element being exposed to the pressurized air in the duct along the open portion thereof.

Abstract: A liquid bearing for use in rotary devices processing biological fluids is disclosed. The device has a stationary housing and a rotating cartridge. One end of the cartridge is rotatably connected to the housing. The other end is not directly connected to the housing, and, thus, is free to move laterally during rotation. The liquid bearing tends to recenter the free end of the cartridge during rotation.

Abstract: Apparatus for altering the physical properties of particles while the particles are suspended in a circulating stream of air or other fluid. The apparatus includes a mechanism for mechanically forming a vortex in a volume of gas, a mechanism for introducing particles into the vortex, and, particle treatment apparatus generally adjacent the vortex for altering at least one of the physical properties of the particles in the vortex.

Abstract: A locking structure of wire rod for filter element, which comprises perforating a locking hole larger than a sectional area of the wire rod near both ends or either one end portion of a cylinder with a passage leading in and out provided thereon, inserting an end portion of the wire rod in the locking hole, fixing mechanically the end portion of the wire rod by pushing forcedly in on a wedge. It is further intended that the wire rod is particularly formed triangularly in section, a threaded groove angled same as the top is formed to a desired slit on an outer peripheral surface of the cylinder, the surface on which the wire rod is wound is made even peripherally, thereby functioning effectively as surface filtration and surface separation.

Abstract: A classifier has a rotor, driven by a motor, mounted between two opposed walls of a housing. The housing also has a curved wall which extends between the walls and around the rotor to define therewith an annular zone. A fluid and finer particles outlet opening is provided in one of the walls. The curved wall has an inlet opening for at least fluid and a fluid and coarser particles outlet opening which is registered with the inlet opening of a receptacle from which the coarser particles can be removed. A plate is located immediately upstream of the outlet opening to divert particles adjacent to the curved wall away therefrom. Similar diverting means can be located remote from the plate such as plate or secondary air inlet openings. Baffle rings are provided concentrically with the rotor to restrain particles forced to the outer peripheries of the annular zone from moving inwardly towards the rotor.

Abstract: A deodorizer is constructed of a casing defining an intake opening and a discharge opening, a blower provided in opposition to the intake opening, a filter provided in the flow passage of an air stream to be produced by the blower, and a reservoir for storing an odor-absorbing liquid therein. The blower, filter, and reservoir are all housed within the casing.

Abstract: In a pressurized materials processing system, separation of solid particulates from a gaseous process fluid is beneficially accomplished by use of a swept orifice discharger comprised of a cylindrical housing that is closed at one end and open at the other end. The housing contains an impeller within its interior and has a selected, presized orifice in its cylindrical side wall. In operation, the solid material and gaseous fluid are received in the swept orifice discharger housing and the solid material is continuously centrifugally urged toward the housing side wall so that it separates from the gaseous process fluid and collects on the housing side wall.

Abstract: A lubricating system for bearing shafts and the like, for example, in a gas turbine power plant especially for an aircraft, has an oil-air separator which is vented to the atmosphere. A pump wheel is used for the separation of the oil and the air out of an oil-air mixture. The pump wheel is so constructed that centripedal and centrifugal forces are employed for the oil-air separation. The air passes by centripedal force through a sponge type filter structure and out through a hollow central shaft carrying the pump wheel or forming an integral one-piece component with said pump wheel. The oil does not travel through the filter but is reversed in its travel direction by centrifugal force for return into the lubricant circulating system.

Abstract: Apparatus for altering the physical properties of particles while the particles are suspended in a circulating stream of air or other fluid. The apparatus includes a mechanism for mechanically forming a vortex in a volume of gas, a mechanism for introducing particles into the vortex, and, particle treatment apparatus generally adjacent the vortex for altering at least one of the physical properties of the particles in the vortex.

Abstract: This disclosure relates to cooling apparatus for a water-cooled internal combustion engine. The apparatus comprises a centrifugal fan driven by the engine when running, said fan having an intake air port and a discharge air opening. A rotary screen is also driven by the engine, the screen being disposed over the intake air port of the fan and substantially preventing debris from entering the intake air port. The apparatus further includes a cooling radiator, and a spiral-shaped duct connecting the radiator with the fan discharge air opening. Further separating means is provided in the duct for removing debris from the air, the separating means being at an intermediate part or at an end part of the duct.

Abstract: Methods of and apparatus for removing contaminants from heated gases by impact separation. The contaminants are collected by adhering them to a moving surface, and they are thereafter removed from that surface.

Abstract: In a pressurized materials processing system, separation of solid particulates from a gaseous process fluid is beneficially accomplished by use of a swept orifice discharger comprised of a cylindrical housing that is closed at one end and open at the other end. The housing contains an impeller within its interior and has a selected, presized orifice in its cylindrical side wall. In operation, the solid material and gaseous fluid are received in the swept orifice discharger housing and the solid material is continuously centrifugally urged toward the housing side wall so that it separates from the gaseous process fluid and collects on the housing side wall.

Abstract: A fluid propelling and filtering apparatus with removable filter cartridge comprising a bottom wall, an annular top wall, and filter media disposed between and secured to the walls for securing the bottom wall to the top wall in parallel, spaced relation and for communicating fluid in through the annular top wall and out through the outer surface of the filter material. The filter cartridge is removably attached to an electric motor for imparting rotational movement to the filter cartridge. The filter cartridge and the motor are enclosed within a housing.

Abstract: A rotary sealing device for connecting a fixed gas supply pipe to a tube rotating about its axis. It comprises a first rotary member for receiving the fixed pipe, a second rotary member for receiving and sealing the rotary pipe and fixed to the first member, and a filter placed in a chamber made in the aforementioned members and forming an obstacle to the gas flow and consequently to an overpressure of said gas, opposing the entry into the said chamber of gas coming from outside the device.

Abstract: A fume exhauster device comprising first means for generating a first air current directed substantially axially toward the first means, and second means for generating a second air current concentrically surrounding the first air current and flowing in circumferential and axial directions away from the second means, the second means comprising a substantially annular exit opening defined at least along its outer periphery by a peripheral surface extending in axial direction for forming the second air current into a cylinder shroud the outer diameter of which is substantially equal to the outer diameter of the exit opening.

Abstract: A high pressure gas/oil separator comprising a pressure vessel with a magnetically driven hollow shaft extending thereinto. The shaft has a slinger at its lower end within the vessel. The upper end of the shaft is in communication with a source of the gas/oil mixture. The vessel has a purified gas outlet above the slinger. Gas/oil mixture is thrown by centrifugal force against walls of the vessel and the oil coalesces on the walls and drains to the bottom of the vessel. The purified gas escapes from the vessel through the outlet port.

Abstract: A fluid/particle separator assembly includes an apertured rotary separator mounted substantially to close an inlet to a chamber through which a fluid is forced by a pump or impeller. The separator is rotated at such a speed that inclined faces bounding its apertures, and facing in the circumferential direction of motion, occlude direct flow through the separator; particles in the flow rebound from the separator to remain on its inlet side while the cleansed fluid passes through the rotor, is centrifuged outwardly and ducted by baffles in the chamber to an outlet. A method of separating particles from a flowing fluid by means of said rotary separator is also disclosed.

Abstract: An apparatus is disclosed for separating entrained particulate matter from a conveying fluid. Particulate matter is collected and deposited in an overlying porous layer on an upstream side of a filter support (22) and then used as a filtering medium ("M") of enhanced filtering capacity. The invention includes a housing (10) having a filter support (22) positioned therein. A filter making zone (36) is defined within the housing (10) by fluid flow through a first predetermined part of the filter support (22) from its upstream to its downstream side for collecting the entrained particulate matter into an overlying porous layer. A filtration zone (37) is defined within the housing (10) by a fluid flow through a second predetermined part of the filter support (22) from the upstream to the downstream side thereof. The filter support (22) has thereon the overlying porous layer of particulate matter ("M") made in the filter making zone (36).

Abstract: A particulate separator of the concurrent flow type includes an inner cylinder mounted concentrically within a tapered conical outer cylinder which is closed at the outer return end. A fan unit is secured within the return end of the outer cylinder to draw air inwardly through the center cylinder, impart a centrifugal force thereon and imparting a tangential spin to the air moving outwardly and then rearwardly and back through the outer conical cylinder. The particulate matter within the fluid moves outwardly to the periphery of the outer cylinder as a result of centrifugal forces. The tangential spin imparted to the air cause the air to move in spiral return path with the conical cylinder establishing a decreasing cross section.

Abstract: Apparatus for filtering air discharged from a cotton gin, so as to minimize the likelihood of contamination of the ambient atmosphere by airborne particulate waste from the gin. The exhaust air from the gin is fed to a housing containing, as initial filtering means, an inertial classifier in which relatively large particulate matter is screened from the air and dropped by gravity to the bottom of the housing below the inertial classifier screen, where it is collected and discharged, preferably by a compacting screw conveyor. A major part of the air along with entrained relatively smaller particles of foreign matter is passed through the inertial classifier screen.

Abstract: A cartridge including a sheet of filtering media in annular form through which air is passed as it moves in a generally toroidal path within an enclosed housing due to rotation of a computer tape disc, or the like, mounted adjacent the cartridge within the housing. The cartridge includes a rigid body portion supporting the filter media in a generally conical plane within the annular body. The body portion is initially formed as two separate, mating halves which engage the media about its inner and outer peripheries when joined.

Abstract: An improvement in a decantation cyclone, particularly for the separation of air from material which is light and has a relatively large surface by means of a grid having relatively wide meshes rotatable about an axis which is perpendicular to the plane in which the grid itself lies. The rotation of the grid causes the gradual and continuous displacement of the grid sector from one position which is situated below the mouth of the air-drawing tubing to a rest position.

Abstract: A method and apparatus for stripping entrained organic vapor and solid particulate matter from a pyrolytic off-gas stream is disclosed. The off-gas is introduced at the top of a conical chamber having a variable speed "squirrel cage" rotor at its top. The wet, dirty, off-gas is drawn into the rotor from below and impinged upon the chamber walls which causes part of the organic vapor to condense and flow to the chamber bottom, thereby cleaning the chamber walls. A portion of the impinged gas is recirculated through the rotor while the remainder exits at the chamber bottom. The ratio of recycled gas to through gas is controlled by the speed of the rotor. Heating and cooling coils on the chamber walls are operable to control the rate of condensation.

Abstract: A device used as a combined scrubber and water droplet eliminator which may be employed in removing particulate from air, especially in conjunction with an underground mining machine. The scrubber is made of a fibrous bed material and is rotatable by a motor forming part of a bed assembly. Adjacent to the rotatable bed are water sprays directed to spray towards and on the bed as it rotates. A suitable air movement device, such as a fan, draws dust-laden and water drop-laden air to the rotating bed. The air goes through the bed and the dust and water particles impact the bed's rotating wetted fibers and are forced radially directly outward. The bed's rotation takes place against the inlet portion of a stationary bell mouth assembly. An air seal caused by the air pressure differential seals the rotating bed to the inside surface of the assembly.

Abstract: In paper-making operations and the like, fibers of wood are frequently transported through piping as an entrainment in steam. An apparatus is disclosed for separating such entrainment and removing the fibers at one station and the steam at another station. Rotating blades give the entrainment a circular or rotating action whereby the heavier fibers move outwardly by centrifugal force to contact the wall from which the blades scrape the fibers and hurl them to discharge. The fiber-free steam is removed along an axial line perpendicular to the direction of movement of the separated fibers under the influence of a second set of blades.

Abstract: A sound absorbing structure for a flow duct composed of a bundle of parallel, terminated, acoustical waveguides. The bundle of waveguides is cut obliquely so that the individual waveguides vary substantially in length along the cut. The bundle is arranged within a structure which is revolvable about its longitudinal axis. The exterior surface of the structure is spaced from the interior wall of the duct. The longitudinal axis of each of the waveguides is located substantially perpendicular to the axis of revolution. The structure revolves during passage of gas through the duct.

Abstract: The engine of a self-propelled combine is mounted in an enclosure having an inlet through which cooling air is drawn by an engine-driven fan. The air is filtered by a rotating disk-like screen mounted over the air inlet before passing through a radiator adjacent the inlet. A duct extends across the face of the disk from its center to periphery, changes direction and terminates with an open end adjacent the inlet side of the fan by-passing the radiator. The duct is also open adjacent the face of the screen so that the fan draws air through the duct, (some of the air being necessarily drawn from inside the screen as it passes the duct opening) so that foreign material filtered from the mass of cooling air being drawn through the unobstructed portion of the screen and held on the screen exterior surface is removed and carried through the duct. A trash knife rigidly attached to the periphery of the screen extends outwards parallel to the screen's axis of rotation.

Abstract: An air filtering system for large installations such as spinning machine rooms, textile factories, etc., has a rotating drum with permeable walls through which air is aspirated to the interior of the drum while the accumulated contaminants are removed during the rotation of the drum by a reciprocating vacuum cleaner. In order to protect the bearings of the drum and the drive mechanism from contact with uncleaned air, the drum is carried by rollers which contact only the interior surface of the drum. The drive motor and transmission are also placed inside the drum.

Abstract: A gas scrubbing method and apparatus involving uniformly saturating the gas to be scrubbed with water, i.e., wetting the gas to be scrubbed with water vapor to a relative humidity of substantially 100%, and then centrifugally compressing the wetted gas by many atmospheres, i.e., to a density many times atmospheric, to condense and extract from the wetted gas at least part of the water vapor therein, and particulate and gaseous contaminants contacted by the water vapor.

Abstract: A filtering separator, in particular a pocket or tube filter, of the kind in which smoke-laden gas containing dust particles of particularly great adhesiveness is fed into a dust collecting trough of a filter housing at the bottom and upwards towards filter elements and in which the filter elements are cleaned periodically by counter-current scavenging and/or joggling. A proportion of the settling dust agglomerated in the filter which corresponds to the amount of dust in the incoming smoke laden gas and which cannot be carried back to the filter surfaces by the smoke-laden gas is removed from said dust collecting trough.A lower part of the dust collecting trough is occupied by a longitudinally extending, rotatably mounted, perforated or sieve-like drum which is arranged to be filled with heavy bodies such as balls. The upper part of the drum is exposed and acts as a dust-collecting store or reservoir to which the smoke-laden gas is fed in order to flow transversely through the drum and its contents.

Abstract: A gas separation apparatus is provided for removing moistened particles from a stream of air by subjecting the moistened particle laden air stream to centrifugal force to separate the moistened particles from the air stream and thence separating the water from the particles and finally causing the air stream to pass to an outlet through a mechanical separator assembly to remove any particles still remaining therein.

Abstract: An apparatus for removing oil mist includes a cylindrical main body having an air inlet at one end and an air outlet at the other side thereof. A cylindrical rotatable filter having one end open to the air inlet and a centrifugal fan disposed concentrically within the filter and rotatable therewith are positioned within the main body. An oil adsorbent layer is provided on the inner surface of the main body surrounding the filter. The air taken in through the air inlet is passed through the filter into the air outlet causing air-borne oil mist to adhere to the filter. That oil mist which coalesces on the filter is centrifugally forced outward, is adsorbed by the oil adsorbent layer, and thereafter travels through the oil absorbent layer for discharge through an oil drain channel.

Abstract: A rotating separator removes air coating from pigmented paper coating liquid stock. The separator employs a cylindrical tank which is mounted for rotation about a vertical axis. The separator is operated in a filled condition and an air laden or froth fraction is removed from a radially central region of the tank at the top of the tank, while a non-rotating pickup receives air free coating from a region adjacent the wall of the tank near the tank bottom. A method of treating and applying such a coating includes the steps of pumping an air laden coating into a centrifugal separator while maintaining the separator in a filled condition, removing an air froth from the separator for return to the supply tank, and delivering a substantially air free coating directly to the inlet of a control without the imposition of any intermediate pumping apparatus. The centrifugal pumping action of the separator supplements the pressure head on the coating material.

Abstract: Means to tend to dislodge extraneous material from a screen mounted adjacent a cooling radiator for an internal combustion engine such as employed in a grain harvesting combine which develops chaff and dust normally tending to clog said screen, said means comprising one or a plurality of blades extending radially from a cylindrical screen supported for rotation adjacent said cooling radiator and driven by auxiliary means derived from said internal combustion engine.

Abstract: A separator for separating solid particles from a gas stream in which they are entrained comprises a rotatable member on which the entrained particles impinge. The member rotates about a non-vertical axis. The rotatable member is mounted on a stationary body of the separator through the intermediary of resiliently deformable mounting elements which reduce the risk of excessive vibration occurring in consequence of the presence of an unbalanced mass on the rotatable member.

Abstract: A high vacuum pump having a centrifugally filtered intake with a particular utility as an aspirator in a dentist's office, for example, having a coaxial intake/output at the pump's rotor hub with a radial outlet therefrom, a liquid pressure seal on the top and bottom of the pump impeller assembly and an automatically flushed sump tank surrounding the intake filter.

Abstract: A method and apparatus for separating particulate matter in solid or liquid form from a gas stream wherein dirty gas enters a conduit at one end and is moved through it by a fan at the other end operating at a low speed. A relatively fine spray of liquid, preferably water, is discharged into the gas stream upstream from the fan. Cleaned air is exhausted from the fan casing, and particulate matter separated from the gas stream is removed and collected through an opening in the fan casing below the clean gas exhaust. The fan preferably is of the centrifugal type, and good efficiency is obtained with a fan speed of about 600 r.p.m. and with a spray wherein the water droplet size is about 10-30 microns.

Abstract: A strainer drum has a series of axially juxtapositioned, apertured carrier discs which define axially spaced, alternating, circumferentially extending crests and roots. The carrier discs support a prefolded one-piece filter fabric of the weft-and-warp type which is wrapped substantially 360.degree. around the discs and which conforms to the crests and roots defined by the carrier discs. The wefts and warps of the filter fabric are oriented obliquely with respect to the drum axis.

Abstract: An apparatus for removing contaminant particles from an enclosure containing a rotating magnetic disk by using the air flow created by rotation of the disk. A tacky substance is provided at a point of maximum centrifugal force within the enclosure so that contaminant particles are permanently captured. Means can be provided for refreshing the tacky substance.

Abstract: A gas centrifuge and method for the separation of isotopic gaseous mixtures, particularly for the enrichment of uranium by the evaporative, concurrent-flow and countercurrent-flow principles using Taylor circular Couette motion. Gaseous isotopes either alone or mixed with a carrier gas, more particularly uranium isotopes in mixture with uranium hexafluoride carrier gas, are fed to a rotor assembly of a gas centrifuge which comprises two concentric cylinders which may be rotated at the same or at different angular velocities and in the same or opposite directions to create centrifugal forces sufficient to diffuse the heavier fraction of the gas mixture to the periphery of the assembly and the lighter fraction towards the axial portion of the assembly. The rotor comprises an inner, perforate, rotatable cylinder and an outer, continuous, smooth-walled, rotatable cylinder concentric with the inner cylinder and defining an annulus therebetween.

Abstract: A method and apparatus for removing entrained matter from the intake air of a chain saw internal combustion engine of the type including at least one piston and cylinder, a crank shaft, and a carburetor.The apparatus includes a shroud surrounding at least one end of the crank shaft with an air inlet fashioned into the shroud at a position adjacent to said one end of the crank shaft and an air outlet fashioned into the shroud at a position remote from the air inlet. An air passage opens into the shroud adjacent the crank shaft for providing fluid communication between the interior of the shroud and the carburetor. The crank shaft is provided with a hub having on opposite faces thereof a first and second cascade of radial flow compressor blades to centrifugally impel air and entrained particulate matter away from the crankshaft. The compressor blades serve to remove at least a portion of the entrained matter from the combustion inlet air prior to the air entering the air passage for delivery to the carburetor.

Abstract: Apparatus for filtering particulate matter in a fluid (e.g., gas) and in particular small particulate matter, the apparatus including a rotating filter, an expander or turbine for extracting energy from the fluid after the fluid has passed through the filter, an aerodynamic seal comprising a rotating multiple fin or vane member which rotates with the filter and expander, and depending upon the type of particulate matter, there is provided a spray system or a scrubbing system to aid in filtering the particulate matter.

Abstract: A lint disposal apparatus wherein lint or other combustible particulate matter entrained in a column of air moving in a duct is held by opposing forces contiguous to the radially outer surface of a rotating screen against which a flame is directed to cause the particulate matter to be ignited as it passes through the flame.

Abstract: A self-cleaning fluid filter for filtering fluid entering an inlet of a pump, such as an air pump, in which a fluid filter is wrapped around a filter spool forming a filter drum and the drum coupled to the shaft of the pump motor for rotation thereof. The fluid entering the rotating filter will then be filtered of its impurities which, due to centrifugal force, will be dispersed outwardly from the filter drum to drop into a residue container. A deflector plate is disposed in proximity to the inlet for deflecting heavy particles to the residue container.