Abstract: The feeding device (1) comprises two sliding rails (2, 3) arranged in parallel to each other and obliquely to the horizontal. The gap (5) between these rails can be adjusted to the diameter of the bolt blanks to be profiled. In order to be able to perform this adjustment of the gap (5) faster and more accurately, the sliding rails (2, 3) form a parallelogram-type linkage with traverses (10) located above these rails and obliquely to their longitudinal extension. The traverses (10) are attached to bars (9) rotatable in clamping sleeves (6, 7) and mounted so that they can be fixed in position. The clamping sleeves (7) on the movable sliding rail (3) are located, in the conveying direction of the feeding device (1), in front of those (6) on the fixed sliding rail (2), so that the width of the gap (5) is adjustable by pivoting the traverses (10). The device is utilized in machines for rolling thread or other peripheral profiling operations.

Abstract: A process for preparing an alpha aminonitrile comprises providing a cyclic or acyclic aliphatic ketone in a reactor, adding ammonia to the reactor, mixing the ketone and the ammonia, and adding hydrogen cyanide to the reactor to convert the hydrogen cyanide to an aminonitrile. Preferably, the reactor is purged with ammonia before the addition of hydrogen cyanide. The hydrogen cyanide may be added to the reactor at a constant rate, or it may be added to the reactor at a rate that decreases over time. A portion of the ketone may be added to the reactor during the addition of the hydrogen cyanide to the reactor.

Abstract: A process and apparatus for the production of hydrogen peroxide directly from hydrogen and oxygen utilizing a pipeline reactor for establishing a reaction zone for the reaction of these gases within an acidic aqueous solution, is disclosed. The reaction zone is completely filled with the solution and a reaction mixture is formed by dispersing hydrogen gas and oxygen gas in the solution in proportions above the lower flammability limit under control conditions resulting in the formation of hydrogen peroxide. This reaction mixture is maintained until the proportion of hydrogen has decreased to below the lower flammability limit for the gas mixture. The hydrogen peroxide is then removed from the reaction zone. The reaction of the hydrogen and oxygen in the solution is conducted under plug-flow conditions.

Abstract: Undesired stain is minimized for pearlescent toners, adapted for toning elements having non-tacky and tacky areas that define an image, by including in the toner inert, substantially spherical particles having a particle size of approximately 0.3 to 42 microns and by including a slip-agent surface coating on at least the pearlescent pigment particles, and preferably also on the inert, substantially spherical particles.

Abstract: A method of preparing porous fiber reinforced polymer composite sheets has been developed to allow a more efficient preheating of the sheel prior to molding and includes the steps of blending reinforcing fibers with resin matrix forming fibers to form a web. This web is then heated to a temperature wherein the resin matrix forming fibers melt and envelope the reinforcing fibers, tacking them together at crossover points. The resultant web can then be directly heated very efficiently for molding. This web is highly porous allowing rapid heating at moderate pressure differentials during subsequent preheat steps. The microstructure created when the resin matrix forming fibers are initially melted further enhances heating capability because the structure retains porosity during the subsequent heating step required for molding.

Abstract: Azeotrope-like mixtures of 1,1-dichloro-2,2,2-trifluoroethane and 1,1-dichloro-1-fluoroethane, being useful as cleaning solvents, refrigerants and foam blowing agents.

Abstract: Azeotropic or azeotrope-like compositions of effective amounts of 1,1,2,2,3,3,4,4-octafluorobutane and trans-1,2-dichloroethylene; cis-1,2-dichloroethylene; or 1,1-dichloroethane to form an azeotropic or azeotrope-like composition are disclosed that are useful as cleaning agents, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.

Abstract: A process for producing phosphonate esters containing the 2-(pyridyl)ethyl group by reacting a vinylpyridine with a di- or trihydrocarbylphosphite in the presence of a selected silane, protic acid, or Lewis acid is disclosed. Also disclosed are novel silylphosphonate esters containing the 2-(pyridyl)ethyl group. All of the compounds produced herein are useful as catalysts for increasing the molecular weight of polyamides.

Abstract: Dihydroxyheptanoic acids containing an oxabicyloheptane nucleus are provided which have the structure ##STR1## including all stereoisomers thereof, wherein Z is ##STR2## and X, R.sub.1, R.sub.2 and R.sub.3 are as defined herein.

Abstract: An addressable, implantable microstimulator is substantially encapsulated within a hermetically-sealed housing inert to body fluids, and of a size and shape capable of implantation in a living body, by expulsion through a hypodermic needle. Power and information for operating the microstimulator is received through a modulated, alternating magnetic field in which a coil is adapted to function as the secondary winding of a transformer. Electrical energy is stored in capacitor means and is released into the living body by controlled, stimulating pulses which pass through body fluids and tissue between the exposed electrodes of the microstimulator. Detection and decoding means within the microstimulator are provided for controlling the stimulating pulses in accordance with the modulation of the received, alternating magnetic field. Means for controllably recharging the capacitor is provided.

Abstract: Disclosed herein are processes for preparing a compound of the formula ##STR1## in which a novel compound of the formula ##STR2## is reacted with a beta lactam of the formula ##STR3## by treatment with a base, wherein the symbols are as defined in the specification.

Abstract: Electrographic recording element with reduced humidity sensitivity comprising(1) a base, e.g., paper, polymer film,(2) a conductive layer of a continuous coating of an electroconductive composition comprising(a) polymeric binder,(b) electroconductive powder comprising amorphous silica or a silica-containing material in association with a two-dimensional network of antimony-containing tin oxide crystallites in which the antimony content ranges from 1 to about 30% by weight of tin oxide; and(3) a dielectric layer.Mixtures of two or more different sized electroconductive powder particles can be used.The electrographic recording element is useful for recording high-speed computer element, e.g., in geophysical mapping, weather map printing, architectural and engineering drawings, etc.

Abstract: A stitchbonded comfort fabric is disclosed that is absorbent, durable and quick-drying. The fabric is made up of an absorbent, evaporation-reservoir layer and a nonabsorbent, transport layer. The evaporation-reservoir layer comprises a nonwoven web that is stitched with at least one bulkable stitching yarn. The transport layer weighs at least 10 gms/sq m and can be formed from a network of fibrous stitching yarns that do not significantly absorb water and do not exhibit stitching gaps wider than 3 mm. The resulting fabric has a basis weight of between 20 and 120 gm/sq. m, a bulk of at least 10 cc/gm and the capability of absorbing at least 5 times its weight in water. The fabric is useful in intimate apparel, underwear, swimwear, sports shirting, headbands and comfort linings.

Abstract: Substituted diaminedithio-containing compounds useful for improving the speed of a silver halide emulsion are described. These compounds can be added in small amounts to the emulsion preferably after the emulsion has been chemically sensitized and just prior to coating. Fog levels are not greatly affected which is surprising since conventional sensitizers generally do increase the fog level.

Abstract: A process for producing thin film of a first addition polymer on a substrate comprising bombarding a target, consisting essentially of a second addition polymer, with radiation from a pulsed laser in a vacuum or gas atmosphere to form a plume of components of said second polymer; and depositing said plume on a substrate, whereby a film of said first polymer is formed. The first and second addition polymer may be identical or different and in both cases may be fluoropolymer.

Abstract: A vacuum cleaner having a substantially cylindrical tank with a bottom, a cover which pneumatically closes the tank to define a vacuum chamber, an eccentric inlet and an outlet through the tank cover which define a pneumatic path through the chamber and a vacuum source for causing air flow along the path from a dry to a wet filter vacuum cleaner. A convex baffle, in the shape of an inverted shallow bowl with a rim of diameter somewhat less than the diameter of the tank is adapted to be approximately concentrically mounted in the tank above its bottom and has an eccentric aperture which is vertically aligned with the inlet when the baffle is properly situated in the tank. A tube is adapted at its upper end to be connected to the inlet and extend downwardly, snugly through the aperture. The lower face of the tube is cut at an angle other than 90.degree. and optimally at approximately 45.degree..

Abstract: This invention uses the evanescent wave detection of particles to distinguish bound from free in an analyte-binding assay. Illumination below the critical angle is employed, and a beveled window is used to eliminate bulk fluorescence from the emitted evanescent wave liquid. The sample is held in a non-rigid film cuvette.

Abstract: The invention relates to a process for flash-spinning plexifilamentary film-fibril strands of polymers that are substantially plasticizable in carbon dioxide and/or water and have a melting point less than 300.degree. C. More particularly, the strands are flash-spun from mixtures of carbon dioxide, water and the polymer. The invention also relates to the film-fibril strands produced by the inventive process.

Abstract: Apparatus for self-service scanning, registering and bagging a product purchased in a supermarket. The apparatus comprises a unit (1) for dispensing and opening a single plastic bag from a continuous strip wound in a reel, a balance (2) for weighing the item to be purchased, a reel supporting device (3) which feeds the strip of bags to the dispensing and opening unit (1), and a unit comprising a scanner (6) and a computer (7).

Abstract: A method and apparatus for cleaning the outer periphery of a pipe (10) by a carriage (28) travelling along the pipe (10). A housing (58) supported from an upper support frame (56) of the carriage (28) includes a pair of housing halves (58, 60) pivotally connected to each other and forming an enclosed chamber about the pipe (10). Nozzles (94) on the housing (58) are spaced about the pipe (10) for the discharge of a cleaning material in a high velocity stream against the outer surface of the pipe (10). A lifting head (114) connected to the housing halves (58, 60) pivots the halves (58, 60) to an open position and also lifts the carriage (28) from the pipe (10). An embodiment shown in FIGS. 8-10 includes a housing (58B) mounted on rollers (85B) of carriage frame (56B) for oscillation of housing (58B) and nozzles (94B) in an arcuate stroke relative to the carriage frame (56B).