Abstract: The process comprises the steps of leaching the concentrate with hot hydrochloric acid and chlorine gas to dissolve most of the gold, platinum and palladium, treating the residue from the leaching step with an excess of an alkaline oxidizing agent to solubilize the ruthenium, slurrying the resulting solids in water, combining the precious metal values from the slurry with the liquor from the leaching step and releaching the resulting slurry with hot hydrochloric acid and chlorine. The leach liquor which is then separated from the remaining solids is a chloride solution which contains substantially all the platinum group metals and gold present in the concentrate.

Abstract: Means (10) for storing and recovering hydrogen. A tube (12), circumscribing a flexible spring (14), is packed with hydridable material (16). Recovery for storage of the hydrogen may be effectuated by hydriding or dehydriding the hydridable material (16). Depending on the circumstances, (i.e. hydriding or dehydriding) hydrogen will be driven across the boundry between the spring (14) and the hydridable material (16).

Abstract: A process for sequentially and selectively separating gold and platinum group metals from aqueous solutions containing them is disclosed.First, ruthenium and osmium are oxidized to their tetroxides and then removed from the solution. Then, gold is removed by solvent extraction preferably with dibutyl carbitol. Next, palladium and platinum are removed by solvent extraction with an alkyl sulphide and tributyl phosphate respectively, care being taken to reduce iridium in solution before platinum extraction to prevent it extracting with the platinum. Then the iridium is reoxidized and removed from solution. Finally, rhodium is removed from the solution.Using this process gold, platinum and palladium of saleable purity can be extracted directly without the need for further refining steps.

Abstract: A watering device (10) for maintaining a predetermined electrolyte level in the cells of a battery. The device includes a plug body (72) consisting of a cover (12), a valve housing (14) and a float guide (16). A valve (22) is disposed within the body (72) to modulate the quantity of water entering each cell. A float (18) movably communicates with the valve (22). A visual indicator (28) indicates the status of the device (10).

Abstract: An improved metal-air button cell is provided. The cell is comprised of the following components: a conductive metal can, a cathode assembly in the can, a conductive metal cover, and a separator between the cathode assembly, wherein the metal cover and separator provide borders of a space in which an anode material can be placed. The improvement is that the amount of anode material is not sufficient to fill the space provided for it, and, wherein, the anode material is positioned against the separator and a void exists between the cover and the anode material.

Abstract: The coatings are glass compositions which consist essentially of from 18 to 45 mol % of the alkaline oxides CaO and one or both of Na.sub.2 O and K.sub.2 O and from 5 to 22 mol % of Al.sub.2 O.sub.3, the balance being B.sub.2 O.sub.3 and SiO.sub.2 in such amounts that the molar ratio of B.sub.2 O.sub.3 : (B.sub.2 O.sub.3 +SiO.sub.2) lies in the range from 0.575:1 to 0.85:1. The molar ratio of K.sub.2 O: (K.sub.2 O+Na.sub.2 O) is from 0.4:1 to 0.6:1 and CaO is 48 to 52 mole % of the alkaline oxides.These compositions are particularly suitable for use during the heat-treatment and hot-working of titanium and its alloys.

Abstract: A coated electrode having a flux formulation that is a function of the diameter of the electrode wire. The electrode wire is made from a nickel-chromium-cobalt-molybdenum-aluminum alloy. The flux coating contains differing amounts of manganese, iron and columbium depending on the diameter of the core wire.

Abstract: A hopper-feeder (10) especially suited for, but not limited to, continuously feeding self adhering powders to a subsequent processing step is disclosed. In particular, the apparatus includes a first hopper (12), an intermediate passageway (16), a second hopper (18) and a feed guide (20). A wiper (32), a bottle brush auger (34) and an associated auger cleaning rod (36) expedite powder flow. Shear blades (40), disposed within the second hopper (18), further break up any undesirable particles before exiting the apparatus (10).

Abstract: An improved metal-oxygen button cell having a thermoplastic sealing annular ring placed between the cathode assembly and the grommet is provided. The cell basically is comprised of the following components: a conductive metal can, a cathode assembly in the can, a conductive metal cover, an anode material in the cover, a separator between the cathode assembly and anode material, a grommet and a thermoplastic sealing annular ring.

Abstract: A photocurable tubular electrode (10) and means (30) for fabricating same is disclosed. In one embodiment, a glass braid (66), saturated with a photocurable resin, is partially cured in the presence of visible light. The still flexible braid (66) is then shaped into a sheath (28) and fully photocured. The now rigid sheath (28) is disposed about spaced spines (14) comprising the tubular electrode (10) to form tubes (18) whereupon active material (20) is introduced into the tubes (18). In an alternative embodiment, the partial curing step is eliminated. The resulting sheath (28) displays superior battery performance while simultaneously reducing pollution effluents and energy requirements.

Abstract: A safety helmet (10) including an impact absorbing shell (12) and a number of energy absorbing strap retainers (34) is disclosed. A plurality of sockets (20) receive the retainers (34). The retainers (34) include a pair of flexible shock absorbing wings (46) which are designed to nest against lands (30). Upon the application of a blow to the helmet (10), the wings (46) flex and absorb a portion of the impact.

Abstract: A side terminal battery (10) and method of making same is shown and described. In particular, the terminal (34) includes an electrically conductive plug (24) disposed within an externally extending boss (16). The plug (24) does not extend into the battery (10). Rather, a riser (38) is welded (40) to the plug (24) through an aperture (14) disposed at the base of the boss (16). The terminal (34) is mechanically crimped (42 and 44) to further ensure the leak-resistant soundness of the joint between the plug (14) and riser (38).

Abstract: A novel laminated composite material of gold-colored appearance especially suited for, but not limited to, coinage applications has a ferromagnetic core located between sheathing layers of a Cu-Al or Cu-Ni-Al alloy and separated therefrom by layers of copper. Alternative methods involving hot and/or cold rolling techniques are provided for the production of the novel laminates.

Abstract: A rotatable and retractable storage lug (50), especially suited for, but not limited to, nuclear reactor applications is claimed. The lug (50) is equipped with a rotatable and slidable weight-cylinder assembly (76 and 64) in coaxial relationship with a pivoted support beam (60). Furthermore, the weight-cylinder assembly (76 and 64) and support beam (60) are connected together by a lockable channel (70 and 70A), groove (68 and 68A) and pin (62 and 62A) arrangement. By rotating the cylinder (64), the support beam (60) will assume either a horizontal or working position or a vertical or stored position.

Abstract: A process for electrowinning nickel or cobalt from an electrolyte in apparatus having spaced insoluble anodes and cathodes. Each anode is provided with diaphram means for defining an anolyte compartment. A frothing agent is introduced into the feed electrolyte which expedites the withdrawal of spent electrolyte and anodically generated gases.

Abstract: There is provided a non-rotating, self-centering stabilizer (10). The stabilizer (10) includes a cylindrical sleeve (12) disposed about a rotating mandrel (34). A plurality of wear-resistant pads (18A, 18B and 18C) partially extend from a similar number of longitudinal channels (14A, 14B and 14C) to form a stabilizing relationship with the wall of a hole being drilled.

Abstract: A gas-liquid contact system for absorption of gaseous contaminants in an absorptive liquid where contact is attained by controlled flow relation between the gas and liquid forming a fluidized liquid mass for intimate contact between gas and liquid.

Abstract: An apparatus (10) for crimping the ends of tubes (44) preparatory to their removal from a tube support structure (46). Accordingly, the apparatus (10) is provided with a plurality of radially spaced serrated members (24A, 24B, 24C and 24D) pivotally mounted within a housing (12). The members (24A, 24B, 24C and 24D) are equipped with rollers (32A, 32B, 32C and 32D) in registry with a retractable cone (34) disposed within the housing (12). An elastic O-ring (38) circumscribes each member (24A, 24B, 24C and 24D).