Abstract: The present invention relates to methods of separating hydrocarbon and gaseous mixtures and, more particularly, to methods of producing hydrogen from hydrocarbon gaseous mixtures and apparatus for implementing such methods.

Abstract: A paper machine drying section has a pair of staggered rows of rotary dryer cylinders which include a first group of cylinders of both rows which form an initial part of the drying section where a web is initially received from a press section. A first endless fabric which forms a closed loop is guided around the above group of cylinders in a manner situating the cylinders of one of the rows within the loop to form inside cylinders therefrom and the cylinders of the other of the rows outside of the loop to form outside cylinders therefrom, this first endless fabric transporting a web which is to be dried around the cylinders of the above group while situating the web between the first endless fabric and the outside cylinders and the first endless fabric itself between the inside cylinders and the web.

Abstract: Compounds of the general formula: ##STR1## wherein X is selected from the group consisting of oxygen, CH.sub.2 and CH radicals, and when X designates oxygen, R designates alkyl, isoalkyl, aralkyl, and substituted aralkyl groups and when X designates CH.sub.2 then R designates alkyl, phenyl or substituted phenyl group, and A-B is a single bond, and when X designates CH.sub.2 R designates alkyl, phenyl or substituted phenyl groups and A-B is a double bond; and physiologically acceptable salts of these, and mydriatic pharmaceutical compositions containing the same as active ingredient.

Abstract: A method and apparatus for horizontal continuous casting of metal alloys, such as brass, which tend to have a component thereof separate therefrom, in vapor form, during and immediately after solidification of the metal. The molten metal alloy progresses from the entrance end toward the discharge end of a horizontal tubular mold, with the metal solidifying at least next to the inner surface of the mold before reaching the discharge end thereof. The solidified metal in the mold shrinks inwardly away from the mold surface to form a shrinkage gap therewith, so that the above component of the alloy in vapor form enters into this shrinkage gap. In accordance with the invention this shrinkage gap is maintained filled with a gas which is inert to the above vapor so that the latter cannot oxidize in the shrinkage gap. In this way it is possible to avoid formation of undesirable deposits at the inner surface of the mold.

Abstract: A system for mooring a ship or like floating vessel to an offshore structure and for transferring a fluid between duct means provided on said ship and structure, respectively, comprising at least one hawser and at least one fluid transferring hose pipe connected with one end thereof to duct means on one of the ship and the structure and with its opposite free end to one end of said hawser, wherein the improvement consists in that said hose pipe end is provided with connecting means which, in the stowage position, is normally connected to one of the ship and the structure, said means being adapted to be detached from said one of the ship and the structure, in order to be attached to the other one of said ship and structure whereas a tow-line is provided for at the same time drawings along the hawser towards its operative position, said hose pipe end being provided with pipe fittings for removable connection to duct means on the other one of said ship and structure.

Abstract: The invention relates to a method of assembling and installing a device for exploiting an oil-field. Said device comprises an upper structure comprising two superposed platforms provided with a vertically slidable column, and a lower structure comprising at least two tanks connected to the upper structure by means of support legs. Such a device allows its elements i.e. each of the platforms and the tanks to be fabricated separately, and the assembly to be performed only in floating conditions and not in a dry dock. Furthermore the fabrication can therefore take place in a yard designed for constructions of small size compared with that of the completely assembled device.

Abstract: A two way valve assembly for use in flexible containers having a pair of one-way fluid passages. Thus, the one-way passage provides for fluid flow from the container interior to the external atmosphere while the other one-way passage provides a path for fluid flow from the external atmosphere to the interior of the container. Apparatus is provided for selectively closing one or both one-way fluid flow passages.

Abstract: A process for obtaining a half-tone picture of irregular structure consists in exposing a coarse-grained silver-halide material with an average linear size of silver halide micro-crystals of 4 to 6 microns, developing the exposed material in an infectious developer, printing the resulting picture on a high-contract photosensitive material, and developing the exposed high-contract photosensitive material. The process permits obtaining a high-quality half-tone picture with the optical densities of the original being reproducible within the range of more than 1.0. The process is simple and easily controllable.

Abstract: The contact apparatus comprises a perforated base provided with at least one liquid overflow device, and two baffles, the ports of the base being for gas (steam) to pass. The overflow device is in fact two coaxial shells of which the top (as along the flow of liquid) partly encloses the bottom one, and is made up by two shell pieces interconnected by a guide member. The bottom shell piece has smaller flow passage area than the top one. The lower edge of the guide member is located above the upper end of the bottom shell. Each of the baffles is situated under the shell so to make a certain clearance with the lower end of the respective shell. The present invention can find utility when applied in fractionating and absorption columns for processes proceeding under heavy loads in terms of liquid processed, e.g., for purifying converted gas from carbon monoxide and dioxide by various absorbents, as well as for processes for absorbing nitrogen oxides with water in producing weak nitric acid.

Abstract: The present invention relates to production of wool-like chemical filaments and, more particularly, to a spinneret for obtaining these filaments. The present invention is most effectively realized in the production from these filaments of household and industrial textiles. This spinneret includes a filament-forming hole made as a slot with a configuration of an open polygon, having a rectilinear portion adjoining one of the sides thereof and one more element shaped as a rectilinear section adjoining this portion at a right angle thereto. Such a structure of the spinneret permits production of a wool-like filament possessing all properties inherent in natural wool, namely, low heat conductivity, permanent crimp, and high hygienic properties.

Abstract: Apparatus for damping pressure and consistency perturbations occurring in the pulp suspension flow to the headbox of a paper making machine including an enclosed damping tank defining therewithin a space for a volume of air and a space for the pulp suspension such that the pulp suspension and the air volume have direct interfacing contact. Longitudinally extending distribution and collecting header means are disposed within the tank for conducting the flow of pulp suspension into and out of the tank, respectively. Each of the distribution and collecting header means define a flow passage for the pulp suspension, which passages fluidly communicate with the pulp suspension space within the damping tank through an elongate, continuous slit. Damping or attenuation of the pressure perturbations in the pulp stock flow is achieved through the interaction of the surface of the pulp stock with the air volume while the consistency perturbations are damped through the action of a plural delay principle.

Abstract: A method and apparatus for mixing a first relatively cool gas current and a second relatively hot gas current in a manner such that the resulting gas current has a relatively uniform temperature immediately subsequent to the point of mixing. The first gas current is separated into first and second partial gas currents, the first partial gas current being directed to a conduit which branches from the conduit in which the second partial gas current is directed. The first partial gas current is directed at a relatively high velocity into a central nozzle in fluid communication with the second gas current while the second partial gas current is directed into a ring nozzle which also is in fluid communication with the second gas current and which concentrically surrounds the central nozzle. The flow of the first gas current is regulated by throttling the second partial gas current while maintaining the flow of the first partial gas current.

Abstract: Increased yield of fodder yeasts is obtained with a culture medium containing peat hydrolysate, ligneous waste hydrolysate and sources of nitrogen, phosphorus and potassium. The peat hydrolysate is obtained by hydrolysis of peat with sulphuric acid and the hydrolysate has a pH of 4.0 to 4.4.

Abstract: According to the invention, a method of producing orthoaminobenzonitrile is provided according to which ortho-toluidine is reacted with ammonia at a temperature of 360.degree.-460.degree. C. in the presence of oxygen, or a mixture thereof with inert gases, and a catalyst, namely, a mixture of oxides of antimony, bismuth, vanadium, and phosphorus taken in a weight ratio 5-12:3-9:1-9:0.5-4, respectively, the catalyst being applied to a support.The invention ensures an increase in the yield of orthoaminobenzonitrile per unit volume of the catalyst and selectivity with respect to the final product.

Abstract: Disclosure is made of a photoelectric pyrometer for measuring the temperature of bodies of small cross-sectional dimensions which vary with respect to the optical axis of the pyrometer. The pyrometer comprises, in successive arrangement, an objective, a stationary field diaphragm, a slit obturator, an aperture diaphragm, a condenser sighted at the aperture of the stationary field diaphragm, and a photoelectric converter arranged in the sharp image plane of the condenser. The light-sensitive surface of the photoelectric converter receives two trains of light pulses. One of these pulse trains is formed by the above-mentioned units, whereas the other is formed by the obturator arranged across the path of a luminous flux generated by an optical feedback radiation source. The photoelectric converter produces two trains of trapezoidal electric pulses of a variable duration and on-off ratio.

Abstract: A roll of the type which is used in paper machines has an inner roll body provided with an outer covering made up of a series of elongated strip portions which circumferentially surround the inner roll body while being distributed axially therealong and engaging each other. These strip portions are welded to each other and also may be welded to the inner roll body. The welding of the strip portions is carried out by way of an electron beam type of welding which can be oriented so as to achieve one or more of a number of different types of weld connections between the successive strip portions and, if desired between the strip portions and the inner roll body.

Abstract: The apparatus relates to travelling-wave looms, wherein weft thread carriers are conveyed along a closed trajectory of the type disclosed in U.S. Pat. No. 3,835,893. The apparatus includes a rotatable disk carrying rotatable winding members, lower grips for the end of the weft thread, a package holder and upper grips for the weft thread. Above the disk, beneath the upper grip for the weft thread, a mechanism for conveying the weft thread in a direction opposite to the downward movement thereof in the process of threading is mounted. This mechanism comprises a rod located in the zone wherein the carriers initially encounter the winding members. The weft thread is conveyed upwardly through the disk when a length of the thread defined between the upper grip and the thread guide provided in the disk encounters the rod during coordinated rotation of the disk with the weft thread carriers.

Abstract: An electrical control system includes a matrix made up of electrically conductive lines and columns which cross each other at predetermined locations where a plurality of connecting circuits are provided for respectively electrically connecting the lines and columns to each other at selected locations. The connecting circuits respectively include Zener diodes respectively having threshold voltages distributed among a plurality of different threshold voltages of different discrete magnitudes. The level of the signals supplied to the lines can be correspondingly modulated. A receiving structure electrically connected to the columns for receiving output signals therefrom includes components having thresholds of detection corresponding to the magnitudes of the threshold voltages of the Zener diodes of the connecting circuits. These components of the receiving structure include operational amplifiers polarized by Zener diodes which are connected in cascade.

Abstract: The joint of the expander is formed by tooth-like portions of the side flanges of a U-shaped spring, bent inward and coiled into a ring.The device comprises a measuring gear which reels off the sinuous profiled spring from a spiral.The gear has a radial slot receiving the reciprocating cutters acting in conjunction with bending punches which bend the cut-off tooth-like ends of the spring, locked into a joint.

Abstract: The present invention relates to a new process for the preparation of N.sup.1 -(2'-furanidyl)-5-fluoro-uracil, also called Ftorafur, which is a very important anti-cancer compound. Said process comprises reacting 2,3-dihydrofuran with water in the presence of a catalytic amount of an acidic catalyst at a pH below 2.5, removing excess of unreacted starting materials and reacting the mixture obtained with silylated-5-fluoro-uracil is in the presence of a Friedel Crafts type catalyst uracil in an inert organic solvent. The new process has many advantages in comparison with those used so far.