Abstract: A chemical canister for use in a respirator has opposed openings, one for connection to a mouthpiece and the other for connection to the rest of the respirator. The canister contains a carbon dioxide removing and oxygen liberating chemical, and there also is a chemical which, upon being heated, will liberate nitrogen to mix with the oxygen liberated in the canister.

Abstract: This invention relates to apparatus for refining platinum group metal concentrates and the separation therefrom of silver and of the majority of base metals which are present with them. In more detail, the apparatus comprises means for reacting together gaseous hydrogen and chlorine so as to produce a flame and means for passing into the reaction zone of the said flame the said mineral concentrate in finely divided particulate form.The apparatus comprises a tubular burner having a hydrogen-chlorine flame discharging into an inner heat resistant tube, means for the passage of the said mineral concentrates in particulate form through the reaction zone of the hydrogen chlorine flame, means for maintaining the reaction zone of the flame at a temperature within the range 900.degree. C. to 2500.degree. C. and means for scrubbing the reaction products after passage through the flame with an aqueous solution.

Abstract: A gas mixer and reactor is provided which is especially suitable as a burner which includes an elongated gas flow chamber with a nozzle arrangement at its inlet end for passing a first gaseous reactant into the interior of the chamber toward the outlet from points uniformly about the inner periphery of the chamber, and an annular nozzle arrangement near the outlet of the gas flow chamber for directing another gaseous reactant or reactants through the outlet of the gas flow chamber and into a thermal reaction chamber which communicates with the outlet of the gas flow chamber.

Abstract: A fluid supply is provided for inflating an expandable confinement of a vehicle occupant restraint system of the type activated in response to a vehicle collision signal. The fluid supply includes a housing defining a fluid discharge port for directing fluid flow from the housing and a gas generating material disposed within the housing. The gas generating material includes a sustaining charge comprising a plurality of layers of granulated material, the layers being approximately equal by weight. Screens are disposed between each pair of adjacent layers of the sustaining charge. Each of the screens has a mesh substantially finer than the granules of material in the layer adjacent the screen and oppositely disposed from the fluid discharge port. The sustaining charge is activated in response to a collision signal.

Abstract: An oxygen generator for welding, cutting and brazing work includes a gas-tight container and a cartridge holder for cartridges giving off oxygen when burned. The gas-tight container is constructed as a pressure tank and envelops the cartridge holder in such a way so as to leave a storage volume which is capable of accommodating the amount of oxygen given off by burning at least one cartridge without exceeding the pressure limits of the pressure tank.