Abstract: In the hub clutch disclosed, an external annular body coaxially encircles a drive member and is radially spaced from it. An annular clutch member, coaxial with the drive member and the body, is rigid in rotation with the body but is axially movable for selective engagement and disengagement with the drive member as regards rotation. An axially movable actuator for the clutch member is connected to and spaced coaxially from the clutch member by spring connecting means. An axially fixed cover has a rim coaxially encircling the body and has an end wall axially spaced from the body and the drive member, the cover being rotatable relative to the body. The end wall and the actuator have axially extending cam formations which cooperate to cause axial motion of the actuator upon rotation of the cover relative to the body, the actuator being urged towards the end wall by spring biasing means.

Abstract: There is disclosed a countercurrent multi-stage process for separating an organic solvent from a phosphoric acid solvent solution by the addition of an alkali material such that the ratio of Na.sub.2 O to P.sub.2 O.sub.5 in the water phase in each stage is from 0.45:1 to 0.90:1 whereby substantially all the organic solvent is recovered from the starting solution in the final stage of the extractor.

Abstract: A nitrile, such as terephthalonitrile is catalytically reacted with water, in the vapor phase, to produce a gaseous effluent containing the corresponding carboxylic acid, as well as unreacted nitrile, ammonia and water. The acid product is separated from the gas by sublimation, preferably at a temperature above the dew point of the other components of the mixture.

Abstract: There is disclosed a novel process and product produced thereby for the selective stretching of incremental portions of a substrate of a synthetic thermoplastic material selected from the group consisting of a thermoplastic orientable polymer or a blend of a thermoplastic orientable copolymer in which there is admixed an incompatible second phase selected the group consisting of an incompatible polymer or inorganic material. The substrate is stretched in grooved roller pairs by controlling the velocity of introduction of the substrate to maintain the velocity substantially identical to the surface velocity of the roller pair. Stretching of the blends produce an opaque, low density porous sheet.

Abstract: A polymerizable material is formed by the reaction of: (A) acrylamide or methacrylamide; (B) from 1.5 to 2 moles, per mole of acrylamide or methacrylamide, of formaldehyde; and (C) an amount equivalent to the formaldehyde of a hydroxyl-group containing component comprising one or more hydroxyl or group-containing compounds containing from 1 to 4 primary or secondary hydroxyl groups per molecule, at least one of the hydroxyl groups-containing compounds being a monoacrylate or monomethacrylate of a diprimary, disecondary or primary-secondary diol, the said monoacrylate or monomethacrylate being used in an amount of from 0.1 to k mole, per mole of acrylamide or methacrylamide, when the average number of hydroxyl groups per molecule of the hydroxyl group-containing component is 1 and in an amount of from 0.

Abstract: Process for recovering hydrogen chloride from a gas withdrawn from an oxychlorination reaction zone which contains hydrogen chloride and water vapor wherein the gas is initially cooled, followed by contacting the gas with a small amount of water to absorb the hydrogen chloride from the gas. The water content is controlled to provide an aqueous hydrogen chloride stream having a hydrogen chloride concentration of from 10% to 20%, with the absorbed aqueous hydrogen chloride being recycled to the oxychlorination reaction. A dilute aqueous hydrogen chloride stream, obtained from another portion of the process, may be employed in the initial cooling step, as a direct quench, resulting in vaporization of the dilute aqueous hydrogen chloride stream and eliminating the necessity for a hydrogen chloride concentrator.

Abstract: A pyrolysis gasoline, containing dienes and mercaptan sulphur is hydrotreated in a first stage in the presence of a non-noble metal catalyst under conditions primarily designed to effect mercaptan sulphur reduction, rather than diene reduction, followed by hydrotreating in a second stage in the presence of a noble metal catalyst to effect the desired reduction in diene value. The two stage treatment results in a stable pyrolysis gasoline product free of excessive polymer requiring no re-distillation, with "doctor sweet" quality, with the treatment being effected at higher space velocities and lower temperatures than those normally employed.

Abstract: Double walled smokestack apparatus is provided in accordance with the teachings of the instant invention having substantially independent, load bearing inner and outer portions which are concentrically disposed to form a thermally insulating air space therebetween. This is achieved according to an exemplary embodiment by providing breeching and top cap arrangements intermediate the inner and outer portions which are configured in such manner to accommodate differential thermal expansion between the inner and outer portions without an attendant coupling of load. In addition, the inner and outer portions are fixedly interconnected proximate a mounting pad location where the moment of force of the inner shell is substantially zero.

Abstract: Filter for separating solid particles from an oil in which a vessel is divided into three compartments by a pair of tube sheets, with a plurality of hollow mesh screen filter cartridges, having open tops and bottoms being supported between the tube sheets. Oil to be filtered is introduced into the top compartment and flows into the interior of the cartridge and is filtered by radial flow through the cartridge into the intermediate compartment. The oil flow washes solids from the screen through the open bottom and into the bottom compartment.

Abstract: A magnifier having a relative aperture exeeding f/1, an angle of view wider than 2.degree. .times. 25.degree., and a pupil distance longer than 0.9 f, in particular for viewing the anode screen of an image intensifier tube forming part, for example, of a viewing device mounted on a vehicle.As viewed in the direction of the observer, the magnifier comprises, in succession,(a) a first component consisting of a positive lens;(b) a second component consisting of a positive power lens;(c) a third component consisting of a meniscus-shaped lens concave to the observer and comprising two lens components cemented together;(d) a fourth component consisting of a positive power lens; the sum of the powers of the two refractive surfaces of the second component having a value of between 0.15/f and 0.55/f, the power of the refractive surface of the third component facing the observer having a value of between 0.63/f and 1.03/f, and the sum of the powers of the two refractive surfaces of the fourth component ranging from 0.

Abstract: An article of a semi-crystalline polymer such as polypropylene, is sterilized by high energy irradiation, with the polymer containing a non-crystalline mobilizing additive which increases the free volume of the polymer, to thereby prevent embrittlement of the polymer during and subsequent to the irradiation. The additive has a density of from 0.6 to 1.9 g/cm.sup.3 and a molecular weight from 100 to 10,000 g/mole.

Abstract: A carbonaceous feedstock, obtained from either a petroleum or coal source, is hydrodenitrified by the use of a supported sulfided catalyst containing nickel, molybdenum and iron, with the molybdenum being present in an amount of from about 10% to about 20%, by weight, calculated as MoO.sub.3, based on total weight of catalyst, the iron to molybdenum atomic ratio being from about 0.05 to about 0.5, and the nickel to molybdenum atomic ratio being from about 0.2 to about 0.6.The process effectively denitrifies high nitrogen content feeds.

Abstract: Methane is oxychlorinated to one or more chlorinated methanes, without net production of carbon tetrachloride, by contacting methane and chlorine and/or hydrogen chloride with a molten mixture of cuprous chloride, cupric chloride, and copper oxychloride, in the presence of an amount of carbon tetrachloride which inhibits net production thereof.

Abstract: A receptor is coated on a plastic substrate, such as a tube, from a solution containing a blocking agent for the receptor sites to prevent adherence of the receptor sites to the plastic substrate, and a deaggregating agent for the receptor to prevent adherence in dimers or aggregates which block receptor sites, thereby reducing receptor requirements.

Abstract: An improved construction of an extrusion press for producing an extruded tube is disclosed, the press including a billet chamber and a ram adapted to drive a billet through the billet chamber, a sizing means comprising an annular die, and a mandrel for sizing the wall thickness of the tube. The improved construction including a mandrel support means attached to and concentrically extending from the front face of the mandrel for maintaining continuous coaxial alignment of the mandrel with the die, prior to and during the extrusion operation.

Abstract: Corrosion inhibitor comprised of a phosphate and phosphonate, which further includes a homopolymer of maleic acid or maleic anhydride. The inhibitor is capable of effectively functioning in aqueous systems operating at an alkaline pH, and in particular a pH of above 8.5 or higher.

Abstract: In crystallization of a carbonate of sodium from aqueous solutions, a water soluble homopolymer of oxyethylene or block copolymer of oxyethylene and oxypropylene is employed as a defoamer. The presence of the defoamer in the resulting sodium carbonate does not adversely interfere with carbon dioxide absorption in subsequent production of sodium bicarbonate.

Abstract: A process for the preparation of a water-dispersible oleoresinous film-forming material comprises reacting a first hydroxyl group-containing oleoresinous film-forming material with an organic diisocyanate in an amount such that the ratio of isocyanate groups in the diisocyanate to hydroxyl groups in the oleoresinous film-forming material is about 2:1 to produce an adduct containing free isocyanate groups and subsequently reacting the adduct with a second hydroxyl group-containing oleoresinous film-forming material to form a diadduct containing the first oleoresinous film-forming material and the second oleoresinous film-forming material, one of said first and second oleoresinous film-forming materials being a relatively hydrophilic oleoresinous film-forming material and the other being a relatively hydrophobic oleoresinous film-forming material and the relatively hydrophilic oleoresinous film-forming material forming a minor proportion by weight, preferably from 5 to 20% by weight, of the total of relatively

Abstract: The invention relates to an applicator, especially for pigmented liquids, including a container for the liquid, open at one end, but closable by means of a handle which can be fitted on its open end. The handle element carries a shaft and on the free end thereof is provided an overhanging capillary applicator tip. In order to ensure, on the one hand, in such an instrument, a reliable feed of the applicator tip with the liquid and, on the other hand, to prevent an unintentional emergence, especially splashing, of liquid when the instrument is open, it is proposed, according to the principle of the invention, to close the liquid container by means of an inset element, which has transverse slots forming capillary channels, which slots on the one hand reliably convey the liquid to the applicator tip and, on the other hand, prevent excessive issue of liquid.

Abstract: A first structural member having a portion beveled at an angle of 45.degree. which includes a mortise in the form of a generally cylindrical groove is joined to a second structural member having a portion beveled at an angle of 45.degree. which includes a tenon in the form of a generally cylindrical rib, with the beveled portions in an abutting relationship by a joint formed by the rib being snugly fitted in the groove. The members may be joined at a straight angle or at a right angle, and may be employed for producing modular structural frames; articles of furniture; modular toy constructions; wall attachments; flooring boards and other arrangements wherein the flexibility of straight angle and right angle permutations of interlocking members of standardized elongated configurations are utilized.