Abstract: A strainer device for railroad car air brake combined dirt collector and cut out cocks, and arranged to be applied within the swirl chamber of such cocks, and between the collector bowl, about the pedestal thereof, and the lip of the cock throat chamber, which strainer device comprises an outer shell that is open and flanged at both ends, with one end of the outer shell being disposed adjacent the throat lip, an annular seal applied between the said outer shell one end and the throat lip, an inner shell disposed within the outer shell and secured at the other end of the outer shell and adapted to receive the cock collector chamber pedestal, and a compression spring received about the pedestal within the cock collector bowl and resiliently seated against the outer shell end flange at that end of same for spring biasing the other end of the outer shell and the seal against the throat lip.

Abstract: A particulate trap for removing particulates from the exhaust flow discharged from a diesel engine comprises a trap housing having an inlet connection and an outlet connection for the exhaust flow, an intermediate filter housing with a support plate positioned between one end of the filter housing and the outlet connection. The support plate is provided with a central one way valve controlled bypass passage extending therethrough and a plurality of closely spaced apart internally threaded apertures therethrough located around the bypass passage. A plurality of filter tubes are operatively supported within the filter housing by the support plate. Each of the filter tubes includes a perforated tube having an externally threaded outlet fitting fixed at one end thereof that is releasably threadingly engaged in an associate one of the apertures in the support plate whereby the perforated tube is supported in cantilever fashion.

Abstract: Fibers and lint floating around a spinning machine are aspirated into a system comprising a plurality of filter boxes, each filter box being divided by a screen into a lower raw-air compartment and an upper clean-air compartment, the latter containing a blower serving to circulate incoming air from the screen to a normally open discharge duct. The raw-air compartment has a permanently open intake duct for the aspirated air and is further provided with a normally closed suction duct communicating with a central exhauster common to a group of such filter boxes. From time to time, or when a sensor detects an excessive pressure in the raw-air compartment due to accumulation of solids on the entrance side of the filter screen, the suction duct is opened and the discharge duct is closed whereby the solids are enabled to drop off the screen for removal by the exhauster to a central receptacle.

Abstract: The invention is an air purifying apparatus having an air inlet plenum (22, 140) mounted to a filter canister (21) and containing a bypass (63, 157). A barrier (52, 147) divides the inlet plenum (22, 140) into an inlet chamber (53, 150) and an outlet chamber (54, 151). In one embodiment the bypass is formed as a box (63) attached to the plenum (22) and containing openings (70, 71) which communicate respectively with the inlet chamber (53) and the outlet chamber (54) to define a bypass flow path from the inlet chamber (53), through the box (63) and into the outlet chamber (54). In another embodiment the bypass is formed as an opening (157) in the barrier (147) to allow direct communication between the inlet (150) and outlet (151) chambers.

Abstract: A filter device comprising a tubular housing with an inlet for the fluid to be filtered in one end of the housing, an outlet for filtrate in the opposite end of the housing and a filter tube mounted inside the housing and extending essentially in the axial direction of the tubular housing. At least part of the filter tube wall forms the filter surface. One end of the filter is openly connected to said inlet, whereas the other end is closed so that an annular feed conduit is formed between the housing and the filter tube. A first valve means is arranged inside the filter tube to shut off the filter tube, during cleaning periods, thereby dividing the filter tube and the filter surface into an upstream part and a downstream part, and forcing the entire filtrate stream to pass through said upstream part of the filter surface into the filtrate conduit.

Abstract: A system for controlling emissions of particulates and heavy organic vapors in the exhaust gases of diesel engines includes, in a preferred embodiment, a heat exchanger for cooling the engine exhaust gases below the condensation temperature of the organic vapors and their resultant adsorption onto the entrained particulates, and a particulate trap connected to receive the cooled gases from the heat exchanger and collect therefrom entrained particulates and heavy organic vapors adsorbed thereon. A bypass system is provided to direct high temperature exhaust gases around the filtration device to avoid desorption of condensed vapors from the collected particulates and other auxiliary filter and control means are included.

Abstract: An environmental enclosure or clean room composed of a structural frame which supports a flexible transparent plastic film which defines a sealed chamber or room. Air is introduced into the chamber through a two-stage filter system and is exhausted through a filter duct. Located adjacent the chamber is a small entry compartment, and the entry compartment has sealed doorways leading to the exterior and to the interior of the sealed chamber respectively. To inspect objects in the sealed chamber, the operator enters the entry compartment and puts on a hermetically sealed suit that is normally stored in the compartment. With the operator sealed within the suit, the entry compartment is sterilized and the operator can then enter the main chamber. The suit has a provision for receiving air from the outside and for discharging air from the suit to the exterior of the chamber.

Abstract: An apparatus and method for controlling the quality of the air in a specific environment including a base portion having a plurality of air purification means. The base provides support for an upwardly extending central tower having a plurality of air inlet openings which are shielded from the weather by protective covering means. The tower is covered by a roof. On entering the tower, the content of the air is monitored. A fan means creates an air flow path through the air inlet openings, downward through the tower to the air purification means in the base, through any one of the plurality of air purification means before being vented to the outside environment through air outlet openings. The air is monitored again after being filtered to determine the amount of pollutants. If the amount of pollutants in the air is below a predetermined level, the air is vented to the outside environment by retaining an air outlet gating means in its open position so that the purified air can pass to the outside.

Abstract: A serviceable exhaust particulate trap for diesel engines comprising, in a preferred embodiment, a concentric dual bath filter including a tubular outer filter element of high surface area, such as pleated paper or the like, acting as a primary filter, and a tubular mesh-packed secondary filter in a central bypass passage. A normally closed pressure relief valve opens to permit bypass flow through the secondary filter in order to limit back pressure acting on the primary filter under various operating conditions. The particulate trap may be combined in a convenient package with a vehicle muffler.

Abstract: A purifying system is disclosed for the removal of small particles of impurities from a gaseous mixture flowing in a conduit, including a venturi connected in series in the conduit, a liquid injection device for introducing jets of liquid to produce a liquid mist pattern extending transversely within the venturi to moisturize the small particles of impurities, and a regulator operable in response to the pressure differential across the venturi for adjusting the effective cross-section of the venturi and/or the operation of the injection device, thereby to maintain the pressure differential across the venturi at a predetermined value.

Abstract: The invention relates to spray booths intended for spraying or painting of articles and designed to be passed by a stream of atmospheric air admitted through inlet ducts and exhausted through outlet ducts and therebetween forced through a water curtain formed inside the spray booth for separating off paint particles remaining in turbulent movement in the air after ejection from a spray gun operating in the interior of said spray booth. To improve economy in the operation of the spray booth it is desirable to bring about heat exchange between the exhaust air and the incoming atmospheric air. However, due to excessive cooling of the exhaust air with its high moisture content and low temperature after passage through the water curtain by the heat exchange with the admitted atmospheric air of low temperature especially during the cooled season there is a great risk of ice precipitation in, and clogging of, the air passageways in the exchanger.

Abstract: A method is disclosed for recycling industrial air. Air contaminated by particulates is removed from the area of machinery, transported to dust collectors, and filtered. A small portion of the filtered air is discharged to the outside atmosphere while a substantial portion is recycled to the area of the machinery. Significant savings of energy are realized while less particulates are exhausted with the air into the atmosphere as contaminants.

Abstract: A damper valve and more particularly an improved damper valve including purge means for the prevention of leakage therepast.

Abstract: An industrial loader vehicle, handling both wet and dry materials, has a single engine driving the vehicle to a pick-up site, powering all of the components to load the vehicle at the site, driving the vehicle to an unloading site and dumping the materials as desired at the unloading site. A powerful blower develops a high velocity air stream through a pick-up inlet conduit and a collector chamber tiltable on the vehicle for easy dumping of the collected material. A swingable and tiltable boom mounted on top of the collector presents the conduit for easy access to material located around and above the vehicle. The high velocity air stream sweeps the material through the conduit into the top of the collector chamber where it drops to the bottom of the chamber. The blower and surrounding environment are protected from materials entrained in the air stream by bag filters and cyclone separators mounted on the front end of the collector to tilt therewith.

Abstract: A device for separating impurities from gases by means of a washing liquid. The device includes three (3) interconnected chambers: a suction chamber, a mixing chamber and a separating chamber, wherein the outer wall of the mixing chamber is the inner wall of the suction chamber and the inner wall of the mixing chamber is the outer wall of the separating chamber. In the upper portion of the mixing chamber there is an inlet which connects the suction and mixing chambers for conveying contaminated gases rising in the suction chamber downwardly into the mixing chamber. In the upper portion of the mixing chamber below the outlet there is mounted a plurality of spray nozzles for downwardly spraying washing liquids which removes impurities in the contaminated gases as they flow downwardly through the mixing chamber. At the bottom of and directly open to the mixing and separating chambers is a liquid collection chamber for collecting used washing liquids and impurities from the gases.

Abstract: A damping tube-shaped bypass measurement section with protective maintenance features and continuous flow velocity scanning on absorptive filtration units in the nuclear engineering field is disclosed. The bypass measurement section comprises a tube-shaped bypass measurement section, having single or double elements, for absorption filters, featuring at least one shut-off device, and including an absorption layer thickness connected to the main filtration unit which is to be controlled or monitored, and provides for an equivalent absorption layer thickness.

Abstract: A liquid sealing apparatus for attachment to a tank having vapor having a liquid seal for providing containment of the vapor throughout a range of tank pressure. An inert gas supply may be provided to maintain the pressure in the tank at a predetermined point and a diluting fluid supply may be provided with a bypass connection around the sealing apparatus for admission of the diluting fluid upon predetermined high and low pressures in the tank. A scrubber may be attached to the apparatus for treating vapors which break through the liquid seal on an increase in pressure in the tank. The liquid sealing apparatus may include an enclosure having first, second and third liquid compartments separated by partitions with a liquid trap connected to the first and third compartments for maintaining liquid therein, and having first and second gas compartments above the fluid compartments separated by a third partition positioned in the liquid in the second fluid compartment providing a liquid seal.

Abstract: There is disclosed a wet-dry vacuum sweeper including a waste receptacle mounting a separator for receipt of air and entrained solids from a sweeper head for separation of the larger solids by centrifugal separation and passage of the exhaust flow directly to atmosphere or, at the selection of the operator, through a filtration system including upstanding tubular filters for further filtration of smaller particles from the flow stream.

Abstract: A system for removing pollutants from gases in which one or more beds of activated char are formed in a housing along with passages for permitting the passage of the gases directly from the housing inlet to the outlet and passages for permitting passage of the gases from the inlet across the beds of activated char to the outlet. Damper means are associated with the first mentioned passages and are movable from an open position in which the gases pass through the first passages and a closed position in which the gases are directed through the second passages.

Abstract: A dry cleaning machine has a purifier bypass conduit and an associated control valve connected between an air exhaust line of the dry cleaning machine and an outlet line leading to atmosphere through an end filter. The outlet end of the air exhaust line is immersed in cooled water held in a closed vessel of a purifier apparatus and the outlet line is in direct fluid communication with the purifier at a point above the water. During opening and ventilation of the dry cleaning machine, the control valve is opened to provide a low pressure fluid flow path that bypasses the purifier. In one embodiment several exhaust lines, each connected to a separate dry cleaning machine, are immersed in a common purifier. Control valves in the bypass conduits connected between each air exhaust line and the outlet line together with adjustments in the vertical displacement of each exhaust conduit to change its immersion depth in the water accommodate variations in the size and operating cycles of each machine.

Abstract: A filtering unit for use in a fluid pressure system having an inlet port for admitting fluid flowing under pressure through a filter and a desiccant bed to a distributing chamber. During the system's compression cycle, a portion of the fluid under pressure flows from the distributing chamber through metering orifices into a purge cylinder moving a piston therein to the bottom of the purge cylinder. During the system's purging cycle, fluid flowing under pressure is admitted to the bottom of the purge cylinder moving the piston towards the metering orifices causing the pressurized fluid therein to flow at a constant rate in a reverse direction through the filter and desiccant bed into a sump which is exhausted to the atmosphere through a drain valve for renewing the filter and desiccant bed. Also , a one-way valve is provided between the inlet port and the distributing chamber to permit the fluid flowing under pressure to bypass the filter and desiccant bed in the event they become clogged.

Abstract: Automatic valve assembly connected to outlet from clothes dryer to selectively add heat and humidity to building. Bifurcated exhaust duct assembly has manual valve and filter in first duct to exhaust into building, and automatic valve in second duct to exhaust outside building. Automatic valve is retained closed by releasable latch means which releases valve automatically when filter becomes clogged with lint to such an extent as to generate excessive exhaust pressure on upstream side of valve. Valve plate is journalled on off-centered hinge axis so as to swing to open position when exposed to exhaust flow. Pressure sensing means exposed to exhaust pressure cooperates with latch means to release the latch means when exhaust pressure exceeds pre-determined excess. Steadying means cooperates with opened valve plate to maintain plate in open position which produces negligible restriction of flow past automatic valve.

Abstract: A vacuum cleaning or loading device of the type including a means for filtering airborne fine particulate material also includes a back-up filter system for protecting the vacuum exhauster or blower. A by-pass system may preferably be used with the back-up filtration system to protect the primary filter media when the cleaner or loader is being used for collection of liquids. The device may be self-propelled or stationary and may be used for various collecting, loading, transportation or cleaning jobs.