Abstract: Packages such as sacks and bags are emptied by an apparatus which has a substantially funnel-shaped frame with an openable and closable discharge. A device on the inside of the frame slits the package wall and thereby opens the package in the vicinity of the discharge. To reduce and, if possible, eliminate environmental problems, a sleeve is disposed on the inside of the frame for abutment sealing against the wall of a package placed in the frame.

Abstract: A double-acting Stirling engine has a central axis and four cylinders disposed along a straight line which intersects the central axis. Four regenerator/cooler units are disposed in a circle which is concentric with the axis. A tube system which connects the cylinders to the regenerator/cooler units includes first and second rings, both of which are formed of sets of tubes, and both of which are concentric with the central axis. The tubes in the first ring are connected to upper hot spaces of the cylinders; and, the tubes in the other ring are connected to the regenerators and to one of the tubes in the first ring.

Abstract: A prolylphenylalanylarginine derivative represented by the formula, ##STR1## wherein R.sub.1 represents hydrogen or benzoyl; R.sub.2 represents naphthyl or 6-bromo-2-naphthyl. The above compound is useful as an excellent substrate for various enzymes, such as trypsin, plasmin, kallikrein, urokinase, Clesterase and the like. Accordingly, the activity of enzymes can be measured by use of said compound as a substrate.

Abstract: An electrical potential is applied to suspended animal carcasses by a cylindrical carcass-contacting electrode which is continuously rotated about its central axis. A rear portion of the electrode circumference is surrounded by an enclosure within which a cleansing spray is directed on the electrode to avoid cross contamination of carcasses.

Abstract: A phenylalanylvalylarginine derivative represented by the formula, ##STR1## wherein R.sub.1 represents hydrogen or benzoyl and R.sub.2 represents naphthyl. The above compound is useful as an excellent substrate for various enzymes, such as trypsin, plasmin, kallikrein, urokinase, Cl-esterase and the like. Accordingly, the activity of enzymes can be measured by use of said compound as a substrate.

Abstract: The invention relates to a process for obtaining .alpha.,.alpha.'-dinitro-anthraquinones of high purity from crude mixtures obtained from the dinitration of anthraquinone. Such a mixture is placed in contact with an ester having a boiling point greater than 120.degree. C. derived from a mono- or di-carboxylic acid or phosphoric acid, at a temperature between 20.degree. and 200.degree. C. or more, then, after possible cooling, the insoluble material consisting essentially of the .alpha.,.alpha.'-dinitro-anthraquinones is separated.

Abstract: Abrasion testing, and hence particle content of fluids including liquids and gases is carried out by abrading a thin film 25 of an electrical conductor with the fluid, and measuring the resulting change in electrical resistance of the film.The method can be used to monitor metal particles in oil, and hence the state of wear of oil-lubricated metal parts, and the level of particulate pollution in the atmosphere.

Abstract: A dispensing device is provided with a tube that engages a nozzle orifice of the device. During storage, a cap covers the orifice and defines an opening that is adjacent to the body of said device, such that the tube is able to extend beyond the periphery of the cap. The disposition of the cap relative to the tube and dispenser body causes the tube to lie in proximity to an external wall of the body. When the cap is removed or, in an alternative embodiment, rotated, the tube can assume a radially outward configuration.

Abstract: A low pressure, pneumatic tire is provided with a flexible tread belt that extends outwardly beyond the sidewalls respectively adjacent thereto when the sidewalls are flexed under normal load. The configuration and stiffness of the belt is such that the load carried by the tire is effectively spread beyond the width of the flexed torus. At the same time, local deformation of the belt can take place in such a way to fold up over the flexed sidewalls to prevent them from damage by shock or abrasion caused by objects striking the sidewalls.

Abstract: This invention relates to a plasticized coal tar pitch comprising a mixture consisting essentially of about 50 to about 80 weight percent of a coal tar pitch having a softening point of about 40.degree. to about 75.degree. C. (Kramer-Sarnow); and about 50 to about 20 weight percent of a coal tar fraction rich in crystals and having a boiling point of about 350.degree. C. to about 450.degree. C. The mixture is suitable for blending with crude oil bitumen for producing a binder suitable for application to roadways.

Abstract: Packing material is formed of stacked panels of expanded metal, each of which has intersecting sets of parallel linear metal strips. Each panel has a horizontal set of linear strips oriented parallel to a corresponding set of linear strips on an adjacent panel and perpendicular to a vertical fluid flow direction which is parallel to the panels; and, each panel has a second set of linear strips inclined about 45.degree. from the vertical in a direction opposite to the inclination of the corresponding inclined set of strips on the adjacent panel. The strips of adjacent panels are canted in opposite directions relative to the planes of their respective panels. Alternative orientations and directions are also disclosed. The packing material is used in packed towers and conduit-connected motionless mixers, and with crossflow trays and dualflow trays.

Abstract: A power-assisted steering system for a motor vehicle comprises a flexible tie, the ends of which are wrapped in opposite directions around, and are anchored to drums which turn with the steering movements of the steerable guiding wheels. The tie carries at its center, rollers which follow fixed cams. The profiles of the cams are such that, during the steering of the wheels under the action of two hydraulic rams acting through racks and pinions fixed to the drums, the wheels always turn about a single common instantaneous center of turning. The rams are controlled by a distributor valve which is in turn controlled by a rocking lever which is actuated by Bowden wire cables from a steering wheel. The system is especially applicable to load handling trucks having small turning circles.

Abstract: A stretcher frame for an artist's canvas is formed of four wooden side pieces with simple mitred ends, joined at the corners by four corner connector assemblies. Each corner connector assembly has a pair of perpendicularly interconnected arms of U-shaped cross section which slidably receive two of the wooden side pieces. A support bracket projects inwardly from each arm, and a connecting bracket projects inwardly from each side piece. A threaded rod is affixed to the connecting bracket and extends through the support bracket, and a spring on the rod biases the support bracket outwardly to apply tension to a canvas on the frame. To deter inward flexing of the side pieces, cross members extend between opposed pairs of side pieces. Each cross member includes a threaded rod, a spring on the threaded rod, a tube which is biased by the spring and receives the threaded rod, and a nut which is threaded on the rod to compress the spring.

Abstract: The present invention relates to new fluorinated products resulting from the reaction of:(a) one molecule of one or more acids of the formula:HS - A (COOH).sub.n (I)and of(b) one to five molecules of one or more compounds possessing at least one ethylenic bond, at least one of these compounds corresponding to the general formula: ##STR1## and possibly neutralized or partially neutralized with an inorganic or organic base.In the formulae (I) and (II), A represents an aliphatic or aromatic hydrocarbon radical, n is a whole number from 1 to 4, Rf represents a straight or branched perfluorinated chain containing 1 to 20 carbon atoms, B represents bivalent, possibly branched, chaining and may comprise sulfur, oxygen or nitrogen atoms, one of the symbols R represents a hydrogen atom and the other a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms.

Abstract: A hog lot gate has top and bottom rails made of stainless steel, with a wide central portion, tapered in width and height towards both ends. The top surface of each rail has sloping crown faces and depending side walls to allow corrosive material to slide off the sides.

Abstract: An absorber panel for solar energy is formed of two sheets with spacer means extending therebetween to maintain a spaced relationship between the sheets and provide a flow passage for a heat exchange liquid such as water. A pressure differential biases the sheets toward each other so that their spacing is maintained by the spacer means. The upper sheet which is exposed to solar. energy may be thin, and the sheets are free to move away from each other at the location of the spacer means so that permanent damage will not result when the heat exchange liquid expands by freezing or when there is excessive flow of liquid through the flow passage in the absorber panel.

Abstract: A carriage comprises a frame having load-bearing and guide rollers to enable it to roll longitudinally of a tube bundle puller while supporting a tube bundle. On each of two sides of the frame the carriage has two links which are commonly pivoted at one end and at their other ends are provided with members engaged by an elongate bolt rotation of which causes the members to move towards or away from one another. The carriage permits tube bundles of various diameter to be supported directly or indirectly by the members at a proper height.

Abstract: A high mechanical strength reinforcement steel able to be welded up to a determined carbon content, and stable to atmospheric corrosion, comprising, besides iron, at most 1.2% (by weight) of carbon, at most 3.5% (by weight) of manganese, at most 2.8% (by weight) of silicon, at most 1% (by weight) of molybdenum, at most 3% of copper and/or nickel, at most 0.15% (by weight) of zirconium and/or cerium and 0.04%-0.3% (by weight) of niobium and/or vanadium, 0.008 to 0.035% (by weight) of nitrogen, 0.0005 to 0.025% (by weight) of calcium, 0.02-0.15% (by weight) of aluminum and 0.001-0.05% (by weight) of boron and/or beryllium.

Abstract: Pharmaceutical preparations containing as active ingredient a compound having the formula: ##STR1## wherein R represents hydrogen, alkyl having 1 to 4 carbon atoms or alkenyl having 2 to 4 carbon atoms; andX represents hydrogen, alkyl, alkoxy or alkylthio, the alkyl groups of each containing 1 to 4 carbon atoms, halogen (chlorine, fluorine, bromine or iodine), trifluoromethyl, nitro, hydroxy, amino or amino substituted by one or two alkyl groups or by acyl or alkylsulphonyl, the alkyl groups of each containing 1 to 4 carbon atoms, which are particularly advantageous for the treatment of pathological states caused by a disturbance in the functioning of the serotoninergical systems in mammals. These preparations may also be used as anxiolytics.