Abstract: Apparatus for producing a chlorine gas or a hypochlorite compound comprising a housing, a plurality of carbon electrodes arranged in series, with electrodes being spaced to form chambers between adjacent electrodes and one or more hollow tubes extending through the electrodes for delivering a chloride salt brine solution to the chambers. Each chamber is divided into an anode compartment and a cathode compartment by a chloride ion permeable membrane. A fluid sealing ring or rings around the outside perimeter of each electrode and around each hollow tube separates the permeable membrane from each electrode thereby dividing each chamber into an anode compartment and a cathode compartment divided by the membrane. The salt solution is applied to a hollow tube and flows through apertures therein into each anode compartment. A negative D.C. current is supplied to the electrode on one end of the series of electrodes and a positive D.C.

Abstract: Non-ferrous metals are recovered from metal bearing ores or other metal sources in substantially quantitative yields by treating a finely divided metal bearing material with an aqueous inorganic acid to form a slurry and baking the slurry at atmospheric pressure and at a temperature of about 350.degree. to 800.degree.C. or higher under quiescent conditions for a period of time sufficient to convert the non-ferrous metals into soluble salts. The fumes from the baking process are scrubbed with a dilute acid solution to extract volatile metal salts. The residue is leached with an appropriate solution or solutions to recover the soluble metal salts which are then recovered from the solution by conventional techniques.

Abstract: An ignition control system for use in internal combustion engines includes apparatus for sensing maximum pressure due to combustion in an engine combustion chamber during one cycle of operation, for determining when a rotatable member of the engine rotates through a certain predetermined angular position, and for adjusting the ignition timing on a subsequent cycle so that the occurrence of maximum pressure in the chamber coincides with rotation of the rotating member through the predetermined angular position.

Abstract: Apparatus for the removal of noxious material from a contaminated gas stream comprising (1) a lower portion having a liquid reservoir with means for receiving a contaminated gas above the level of said liquid and a substantially vertical elongated duct positioned centrally above said liquid level, (2) a central portion containing fan means positioned in axial alignment above said duct, the operation of said fan means causing an upwardly spiraling vortex of contaminated gases and atomized liquid from the liquid reservoir through said duct and fan means thereby intimately admixing the contaminated gas and atomized liquid and (3) an upper portion through which purified gases exit and wherein the atomized liquid containing said contaminants is coalesced and flows downwardly by gravity to said liquid reservoir.