Abstract: A spark arrester includes a buffer plate against which exhaust gases discharged from the outlet end of a tail pipe strike directly. Upon impingement on the buffer plate, the exhaust gases become turbulent or agitated whereupon temperature distribution of the exhaust gases is made uniform. The buffer plate has a plurality of through-holes arranged to allow passage of the exhaust gases after the exhaust gases impinge against the buffer plate. After passing through the through-holes, the exhaust gases flow through a wire screen during which time sparks in the exhaust gases are caught by the wire screen. The exhaust gases are then guided downstream along a guide tube and finally released from an outlet end of the guide tube. A stream of exhaust gases discharged from the guide tube has only a limited length of high-temperature zone.

Abstract: A supplemental exhaust system for use with an off-road vehicle. The system includes a supplemental silencer and/or a spark arrester contained within a flexible outer shell. The outer shell mounts directly to the housing of an existing exhaust system silencer. The exhaust gases exiting the existing silencer are directed into the supplemental silencer and spark arrester by an inlet chamber having an oversized inlet opening.

Abstract: A flame arrester comprises a continuous flame arresting member in the form of a helix having offset interstices between adjacent turns of the helix. The flame arrester further comprises a mechanism for housing the flame arresting member. Upon installation of the flame arrester on a carburetor, air intake system, or any source of flammable gases, any backfire or flame passing through the flame arrester will be extinguished.

Abstract: An external spark arrestor assembly attached directly to the outer shell of a muffler of an internal combustion engine. The assembly includes a spark arresting screen disposed over the exhaust port of the muffler and forming a first exhaust-receiving conduit between the screen and the muffler; an outer perforated cover disposed over the screen and forming a second exhaust-receiving conduit between the screen and the outer cover; and a single centrally located fastener for removably fastening the screen and outer cover to the muffler shell.

Abstract: A centrifugal air cleaning apparatus includes a housing defining a filter compartment containing a generally tubular filter cartridge having the open upper end thereof in communication with an air outlet opening through the top wall of the filter compartment. A vacuum source is provided in communication with that air outlet opening to effect vacuum pressure within the filter compartment. An air inlet opening through a side wall of the filter compartment has a multi-baffled flame arrestor associated therewith for extinguishing sparks in the fumes being drawn into the filter compartment and for directing the incoming air flow tangentially of the filter cartridge so that a portion of the pollutants carried in the fumes are separated by gravity before the fumes contact the filter cartridge. An injector conduit is provided within the flame arrestor to facilitate blowdown.

Abstract: A flame arresting method, conduit section and apparatus for the safe disposal of combustible waste gases from a source such as a reactor. The invention involves providing a waste gas conduit section with a flame-detecting chamber and one or more upstream snuffing chambers divided by flame arresting grid members, and automatically introducing snuffing gases to the snuffing chamber(s) whenever a flame is detected in the flame-detecting chamber. The outlet from the waste gas conduit section opens to a combustion chamber, for incineration purposes, or to a scrubber.

Abstract: A flash-back arrestor for dissolved acetylene cylinders wherein a cylinder gas-permeable at both ends thereof is joined to an inner end of a valve body in a dissolved acetylene cylinder in such a manner that said cylinder is communicated with a gas passage in said valve body. Filter plates are provided at upper and lower portions of said cylinder, and a packing consisting of a non-combustible granular material is inserted in the portion of the interior of said cylinder which is between said filter plates.

Abstract: A flame arrestor device capable of checking flashback when incorporated in a system utilizing one or more detonatable gases under pressure for controlled energy release purposes, the device being generally installed in series having one or more gas sources upstream while gas conducting means and ignition means are arranged downstream of a membrane barrier mounted and secured to a supporting means which is, in turn, mounted within an arrestor housing with provision for gaps of limited size on the upstream and downstream side of the membrane barrier to permit gas flow. The invention includes built in or separate ignition means downstream of the membrane barrier.

Abstract: A protective spark eliminating system for removing burning particulates from flue gases prior to introducing the gases into a filter baghouse. The protective system includes a housing enclosing a separating chamber having a gas inlet in the side of the housing for directing a stream of flue gases into the housing, and a gas outlet in the top of the housing for conducting the flue gas stream out of the chamber. To effect separation and removal of the burning particulates from the gas stream, the housing is provided with a secondary gas system which is adapted to maintain a downwardly flowing curtain of gas across the width of the flue gas inlet to direct the burning particulates in the flue gases downwardly into a hopper at the base of the housing as the flue gases enter the chamber.

Abstract: An improved welding fume and spark trap includes a cannister and an inlet and outlet plenum for connection with an air filtration suction system designed to remove soot, fumes, and other particles from a welding area. The trap includes an internal baffle for reducing the velocity of the air stream passing through the trap, in this way promoting settling of particles suspended within the air stream into water contained within a water chamber defined by the bottom portion of the cannister.

Abstract: A filter for removing dust and solid particles from a gaseous fluid, such as air, comprises a case having opposite side walls which are symmetrical about a vertical plane. In each side wall there are inlet openings which open into inlet passages defined by inclined baffles which slope inwardly and upwardly to the outer face of filter material contained in the case and having spaced portions, one against each side wall of the case, with a cavity between them in communication with an outlet at the bottom of the case. Air first flows through those sections of the filter material providing the shorter paths defined by the baffles in flowing from the inlet openings to the outlet. As those sections become clogged with dust particles, air flows through adjacent sections so that the useful life of the filter is extended.

Abstract: This invention is concerned with a removable filter to prevent the buildup of Creosote in chimneys which become vulnerable to fires.A hollow enclosure means that is adapted to connect between the chimney and the fire source has within it a support for mounting a filter. The filter is made of a special metal, is knitted with small openings therein permitting the flow of smoke but at the same time to reduce the particles into a minute white ash. The filter acts as a continuous burn reactor. A door is provided whereby the filter can be easily removed from the hollow enclosure and cleaned so that it can be used for an indefinite period without replacement.

Abstract: Safety device in the general form of an apertured disc which aids in keeping sparks and flames from paper, kindling, wood etc., from shooting up the chimney and possibly causing fire; the device also helps to stop soot build up and it controls the rate at which the wood burns, saving fuel.

Abstract: For use in a muffler of an internal combustion engine improved flame-out apparatus includes first and second L-shaped screens each having a longitudinal section and a transverse section. The transverse sections are axially spaced apart and the space therebetween is occupied by a pair of axially spaced apart, transversely oriented perforated partition plates and flame extinguishing means.

Abstract: A flame arrester having a rectangular housing of internal width W, length L and heighth H filled with a plurality of contiguous convoluted planar laminae. Each lamina is comprised of a thin sheet of metal formed with a plurality of spaced parallel shallow channels of selected depth D. As the laminae are placed in the housing in parallel contiguous contact to fill the cross-section of the housing, there will be a great plurality of narrow slots of width D through which the gas will pass to the flame area. Means may be provided in the form of shallow protrusions of heighth D pressed into the metal in the flat areas of the sheet in order to insure that the spacing between sheets at all points is close to the value D.

Abstract: A muffling device for use on the exhaust of an electric generator engine includes an arrestig chamber, partitioned into two compartments by means of an apertured partition. The first compartment is packed with stainless steel wool to filter out hot particulates from the exhaust of the generator engine. The filtered exhaust gases pass through the apertures into the second compartment from where they are directed to the atmosphere by means of a tubular member connected in said second compartment. A muffling chamber is connected directly to the exhaust of the electric generator engine and the exhaust gases first flow into that chamber. A cross-over conduit is in fluid communication with both chambers and directs the exhaust gases from the muffling chamber into the first compartment of the arresting chamber.

Abstract: A motorcycle spark arrestor comprising a cylindrical housing connectable to the motorcycle exhaust pipe and a screen positioned in the housing so as to intercept all the exhaust gases flowing therethrough, the screen including a planar, rectangular, central section positioned parallel to the longitudinal axis of the housing and contacting the opposite sides thereof, and first and second planar end sections made integral with the opposite ends of the central section and extending in opposite, parallel directions therefrom, at an obtuse angle thereto, the free ends of the end sections contacting the housing.

Abstract: An exhaust gas purifier for removing unburned solid particles, sparks, and flames contained in exhaust gas discharged from internal and external combustion engines includes a closed cylindrical member connected to the exhaust port of an internal or external combustion engine and a swirl-generating member disposed in the cylindrical member and provided with a plurality of swirl vanes for swirling the exhaust gas, whereby the length of time that the exhaust gas is disposed in the cylinder is extended and unburned solid particles, sparks, and flames contained in the exhaust gas are centrifugally separated and extinguished thereby discharging relatively clean gas.

Abstract: An upright generally cylindrical casing forms a gas passageway communicating with the exhaust of a flue for receiving its heated exhaust gases. A burner, axially mounted below the casing in the heated gas stream, heats the gases and refractory material contained by the casing to a combustion temperature. Baffles in the casing direct the heated gases toward refractory vanes contained by the casing. Additional air is admitted to the depending end of the casing to support combustion of unburned hydrocarbons.