Abstract: Fire extinguishing devices are designed to extinguish specific classes of fires. Fire extinguishing streams are being planned and being fixed to combat a kind of fire in a fixed state of burning. The invention, a venturi activated tube extinguishes fire in its changing states of burning, in its stages of development and composition. The ejector tube is designed to discharge extinguishing streams with sonic velocities continuously counterbalanced by suction flows at sonic speed along the center axis of the hollow tube. The heat of the damaging fire regulates the densities of the unified discharge and suction flows. Combined forces of pressure and suction increase the capacity of this invention to combat fire. The ejector tube is self-adjusting and self-cleaning. The ring orifice reacts under overthrust pressures to discharge flow obstructing solids automatically.

Abstract: This invention relates to novel composition and methods for neutralization and solidification of hazardous acidic spills. A dry particulate composition of varying reaction grades of alkaline compounds and varying grades of absorptive materials may be used to neutralize and solidify acidic spills, solidify the spills and render them harmless. These compositions may be applied to the spills by fire-extinguisher-like delivery devices which spread the compositions on the spills from a relatively safe distance without splattering the hazardous material.

Abstract: The instant invention relates to water-soluble anionic polysaccharides bound to perfluoroalkyl cationic surfactants. Polymer complexes are formed which are especially useful for fighting fires of hydrophilic or polar liquids. They have the unique property of forming an impervious gel when foamed with suitable surfactants and projected onto burning liquids. The gelatinous blanket is resistant to the fuel and protects the foam blanket from destruction. Consequently, superior fire-fighting agents can be prepared for fires which are otherwise very difficult to extinguish.

Abstract: Disclosed is a hydrated fibrous mass prepared by the steps including introducing a source of cellulosic fibers to water with continuous mixing until a ratio of water to fibers of about 50 to 1 is obtained and mixing the water and source of cellulosic fibers until the source of cellulosic fibers has been comminuted to substantially individual cellulose fibers. The mass can be effectively used as a fire controlling agents. The mass can also be used as a carrier for pesticides, and as a concrete or cement cure rate controlling agent.

Abstract: A foam generation device and method of producing foam wherein an electrical charge is placed upon a foam producing solution or admixture thereof with air. The above admixture is then forced by air pressure through a grounded foam-producing mesh such that foam bubbles are produced at high efficiency. In addition, the turbulence of the air passing through the device may be reduced by a honeycomb section. This honeycomb section in turn may be grounded and the air flow through the device reversed such that already produced foam may be drawn into the device, charged by the grid, and thereafter dissipated upon the honeycomb section.

Abstract: A series of specialty formulations of foaming mud cement are injected into an underground cavity containing an active coal fire. The fire is smothered and terminated with a blanket of foaming mud cement that sets into a cellular concrete. The lower section of the backfill involves a formulation of foaming mud cement containing materials conducive to heat transfer, thus forming a heat sink for dispersion of elevated temperature associated with the fire. The backfill continues to complete cavity fill using a formulation of foaming mud cement wherein the aggregate is composed of hazardous waste materials that are permanently stored within the cellular concrete.

Abstract: Fire-fighting foam effective against burning hydrophilic or polar liquids like lower alcohols, ketones, etc. is made from concentrate containing thixotropic thickener dissolved in large amount, up to 1.5% or more, yet has a tolerable viscosity so that it can be poured or pumped. Heteropolysaccharide-7 or chain-shortened modifications of it are particularly suitable for this purpose. Higher concentrations are made practical by including in the concentrate urea, thiourea, ammonium cyanate or ammonium thiocyanate, to reduce the concentrate's viscosity and keep the polysaccharide from separating out upon freezing. Magnesium salts can also be dissolved in concentrate to improve fire extinguishing action when diluted with fresh water.

Abstract: A shaped body or an aggregation of a plurality of shaped bodies, e.g. pellets, comprising a solid, coalesced mixture of water soluble fluoroaliphatic surfactant and water soluble fluorine-free surfactant is contacted with a flowing stream of a predetermined amount of water, e.g., from the tank of a hand portable fire extinguisher, to produce an aqueous film-forming foam solution of relatively constant composition which can be applied to extinguish a fire or a flammable liquid.

Abstract: A process for the simultaneous utilization of low expanded foam and medium expanded foam produced by respective generators thereof, for the extinction of fires, from liquefied gas comprising transporting the medium expanded foam by the faster traveling low expanded foam in order to provide a high velocity of flow of the medium expanded foam. The low expanded foam is produced by a plurality of generators disposed beneath a single generator of medium expanded foam and inclined with respect thereto to direct the jets of low expanded foam into the lower part of the jet of medium expanded foam.