Abstract: A process for the production of a vulcanized latex protective coating bonded to the surface of an asbestos-cement article, particularly a pipe, is disclosed. The process includes a step whereby the latex coating is applied before autoclaving to the article, and becomes a hard, protective bonded layer during the autoclaving process.

Abstract: A process for precise controlling of thiourea concentrations in a copper sulfate, sulfuric acid solution used in copper refining has permitted improvements in tankhouse current efficiencies and the quality of the refined copper deposited on the cathodes.

Abstract: A method for the introduction of sodium into lead bullion followed by controlled solidification results in higher recovery of lead from the matte and speiss, and the elimination of the expensive undesirable dross reverberatory practice.

Abstract: A bismuth-lead alloy containing lesser amounts of tin, antimony and zinc has been developed for use as a fusible metal, and particularly as a jewel metal alloy. The alloy meets the standards set by presently available jewel metals, has a lower melting temperature, better casting properties, and is less expensive than currently used alloys.

Abstract: A sintering machine for pulverulent ore concentrates containing sulfidic metals including an ignition zone, a sintering zone and at least two cooling zones wherein there is total recirculation of cooling gases between two cooling zones and including a recuperative heat exchanger for cooling the exhaust gas from the first cooling zone, prior to its introduction to the second cooling zone.

Abstract: A method for removing mercury from a sulfuric acid solution including the steps of mixing the sulfuric acid solution with a hydrocarbon solution to form a chemical complex containing mercury. The hydrocarbon solution typically contains a lower alcohol and a halogen component. The mercury complex is removed by the addition of activated carbon and subsequent filtration. Alternatively, solvent extraction, volatilization or other suitable separation techniques can be used.

Abstract: Lead is separated from material containing lead sulfide, e.g. galena ore concentrate, by a substantially autogenous process involving establishing a pool of molten lead in a kettle, adding a metallic alkali metal, e.g. metallic sodium, to the molten lead in an amount sufficient to reduce the combined lead of the lead sulfide to metallic lead, adding the ore concentrate to the molten lead pool, and mixing together the metallic sodium, molten lead and ore concentrate. The sodium reacts rapidly and exothermically with the lead sulfide to reduce the combined lead of the lead sulfide to metallic lead and form sodium sulfide. The thus-liberated metallic lead reports in the molten lead pool, and a matte phase containing the sodium sulfide separates from the molten lead and forms on the surface of the molten lead pool.

Abstract: Casting side dam apparatus for use in a twin-belt continuous casting machine. The side dams each comprise a multiplicity of slotted dam blocks strung on a flexible metal band. The dam blocks are each formed of a beryllium-copper alloy and are resistant to intergranular cracking and chipping over a prolonged discontinuous, cumulative period of thermal cycling between temperatures ranging between about 800.degree. F. and about 300.degree. F.

Abstract: Photoconductive zinc oxide characterized by having improved electrophotographic properties and particularly increased discharge speed, and produced by a process involving mixing the photoconductive zinc oxide powder to be improved with 0.01% by weight or more tellurium calculated as Te, and contacting the thus-obtained mixture with a free oxygen-containing gas while heating the mixture at elevated temperature sufficiently high and for a time sufficient to result in the zinc oxide having the improved electrophotographic properties. The heating temperature and/or heating time is held below that temperature or time at which sintering of the thus-treated product occurs.

Abstract: Casting side dam apparatus for use in a twin-belt continuous casting machine. The side dams each comprise a multiplicity of slotted dam blocks strung on a flexible metal band. The dam blocks are each formed of a beryllium-nickel-copper alloy and are resistant to intergranular cracking over a prolonged period of exposure to elevated temperatures ranging from about 300.degree. F. to about 800.degree. F.

Abstract: A combination promotional booklet and photograph albumis disclosed. The album includes a plurality of leafs, each leaf having a tab portion, a card portion, a weakened line of separation between the tab and card portions and a strip of adhesive disposed on the tab portion adjacent the line of separation.

Abstract: A high speed continuous process for making variegated soap bars is disclosed. Soap chips and an emulsion of minor soap ingredients are each continuously supplied to a mixer. The output of the mixer is a homogenized and variegated soap mass that is refined, plodded in a vacuum plodder, cut into soap bars and finally pressed.

Abstract: A mixing container comprising first and second cylindrical containers telescopically arranged. One form of the invention includes an upwardly extending channel in the side walls of the upper container together with an upper opening therein for permitting mixing of ingredients. Another form of the invention conceives of a rupturable membrane closing an opening in the bottom wall of the upper container. The upper container is provided with a ventable top closure.

Abstract: Process for forming a scrim-reinforced film wherein a molten, film-forming plastic, such as polyethylene, in a high state of fluidity is fed onto an unsupported scrim and solidified by cooling to produce a scrim at least substantially completely enclosed and surrounded by the plastic. The film, thus produced, can be formed into a high strength bag container by a folding and cutting operation utilizing hot knife means capable of fusing and thus sealing the plastic. In a preferred embodiment, the plastic is extruded onto the scrim and is subsequently heat shrunk to cause the scrim fibers to buckle and give the appearance and feel as well as the strength of a reinforced material.

Abstract: A container for dispensing predetermined quantities of liquid comprises a first or primary container having a bottom portion, sidewall portion and open-ended neck portion. A second container comprising an elongated tubular substantially within the first container depending from the neck portion thereof. A third container disposed completely within the first container is integral with and disposed substantially concentrically around the second container. The third container comprises sidewall, bottom and top portions which together form a fluid sealing enclosure, the top and bottom portions being integral with and supported by the outer surface of the second container. The third container, communicates with the primary container by means of an opening provided in the upper portion to its sidewall portion serving as a liquid inlet. A second tubular member of relatively small diameter connects the bottom portion of the second container with the portion of the third container.

Abstract: An improved animal food wherein synthetic proteins comprise all or a significant part of the protein content of the animal food. The animal food is characterized by a high degree of palatability and high nutritional and caloric value.

Abstract: A product dispenser for dispensing two products simultaneously comprising a first cylinder having a first product therein and having an end wall. The end wall has a tongue and groove joint with the first cylinder. The first cylinder is provided with a piston plate therein and the first cylinder in turn forms the piston of a second product therein. The parts are so arranged that movement of the first cylinder relative to the second cylinder will actuate the piston plate as well as discharge both products.

Abstract: A process for making multicolored soap bars wherein a coloring agent is dispersed in a meltable solid vehicle and introduced into a base soap material as a liquid colored material before the base soap material is extruded in the form of a continuous log which is subsequently cut and pressed to form a multicolored soap bar. The meltable solid material solidifies upon contact with the base soap material to form variegated, striated or marbleized colored regions in the final bar.

Abstract: A process for making multicolored soap bars wherein a coloring agent is dispersed in a liquid oil vehicle and introduced into a base soap material before the base soap material is extruded in the form of a continuous log which is subsequently cut and pressed to form a multicolored soap bar.

Abstract: A flexible bag dispenser containing a roll of interconnected moist tissues is disclosed. The tissues are withdrawn from the center of the roll and pass through a restricted opening in the bag. A reclosable closure means is provided at the dispensing end of the bag to prevent evaporative losses and to protect the tissues when not in use.