Abstract: A duct for feeding fibres to a spinning chamber operating in accordance with the method of pneumatic spinning in a stationary whirl.As it is seen in the drawing the area of outlet 6 of duct designed for feeding of loose fibres in a stream of air from a fibre opening-feeding device to a spinning chamber is smaller than the sum area of outlets 4 of main nozzles in spinning chamber 3, said area being also smaller than the area of inlet 5 of the said duct. The length of the said duct is greater than the length of processed fibres.

Abstract: A valve device for gases comprises a pilot valve for controlling the degree of valve opening of a main valve installed in a gas pipe line, a main rotating shaft which can undergo rotation by which the degree of valve opening of the pilot valve is controlled, a sliding member actuated by the rotation of the main rotating shaft to undergo sliding movement in a specific range thereby to control the degree of valve opening of the pilot valve, an electric motor for rotating the main rotating shaft, a screw shaft to which the rotation of the main rotating shaft, after being multiplied in number of revolutions, is transmitted, a moving structure moved translationally by the rotation of the screw shaft, and limit switches disposed at limit positions defining the range of movement of the moving structure and being actuated when the moving structure reaches the limit positions thereby to cut off power supply to the motor.

Abstract: The invention relates to a new substance, namely the hydrochloride of .beta.-phenyl- .gamma.-aminobutyric acid of the following formula: ##EQU1## and to the process for its production which comprises condensing malonic ester with .beta.-nitrostyrene resulting in the separation of an ester of .gamma.-carbomethoxy-.beta.-phenyl-.gamma.-nitrobutyric acid at a temperature ranging from 0.degree. to 14.degree.C, reducing the ester thus obtained with hydrogen in the presence of the Raney nickel under a pressure of 6 to 30 atm, treating 3-carbomethoxy-4-phenyl-2-pyrrolidone, as formed by the reduction, with hydrochloric acid, and separating the desired product.

Abstract: A burner for the direct heating of a fluid by the combustion of an assisted spray liquid and a gaseous substance. Above a grating are arranged spray nozzles for the spraying liquid and injectors for the gas. The said spray nozzles and injectors have independent and respective feed systems. They are arranged in space so as to enable the flowing of the fluid to be heated up, in such a way that the combustion produces a distributed giving off of heat insuring the homogenous heating up thereof in combination with convection means contributing to the stirring thereof. The burner is applicable, to steam generators, to the heating of premises and to the depollution of polluted smoke.

Abstract: A method of, and apparatus for, drying a hygroscopic material possessing a fibrous structure, such as wood and cardboard, which is impinged in a closed drying compartment by a flowing drying medium, which is heated and demoisturized, and wherein after the introduction of the material to be dried into the drying compartment the drying medium is heated to a predetermined temperature and maintained during the entire drying process at such temperature. The drying medium is moved past the material to be dried in order to remove from such material the expelled moisture. From the point in time of reaching the aforementioned predetermined temperature and a fixed value of the moisture content of the drying medium, calculated after the course of a certain time duration, the drying medium is demoisturized for such length of time until its moisture content has dropped to the aforementioned fixed value.

Abstract: The invention relates to a device for the remote adjustment of a switchable network equipping an unattended station on a transmission line, by means of remote control frequencies emitted from a terminal station on this line. The device enables the remote control of a motor actuating a switch which operates said switchable network. The moving of the switch, and then the adjusting of the network, can be followed at the terminal station from the observing of the level of a return frequency sent back from the unattended station to the terminal station.

Abstract: An inorganic fireproof protective coating composition consisting of 5 to 15 percent by weight of a powdered silicate-oxide sinter or alloy, 15 to 35 percent by weight of an anhydrous powdered alumosilicate substance, and 50 to 80 percent of the acid phosphates of aluminum, chromium, magnesium or calcium, or mixtures thereof. All three ingredients of the coating form a suspensoid upon mixing and thereafter they are subjected to self-hardening at room temperature. The hardening process may be accelerated by heating up to 150.degree.C. The coating is designed for protection of products made of readily inflammable materials, particularly of wood and of wood-like materials, against destruction by fire or glow.

Abstract: An oscillographic ferrometer comprising a magnetizing means including a step-down transformer and a single-layer ellipsoidal solenoid connected to a single-turn secondary winding of said step-down transformer and having a constant turns density along the generatrix thereof, said solenoid being adapted for receiving a test sample, and magnetization and magnetizing field measuring channels cooperating with said magnetizing means, wherein said ellipsoidal solenoid is made with rectangular turns and has the geometrical dimensions thereof selected in agreement with the following relationship: ##EQU1## where K is the contraction coefficient of the solenoid generatrix, 2B.sub.

Abstract: A case for displaying notices, having a body including a translucent front face; appropriate, sealingly interconnected walls; the bottom wall having an access opening; a removable shutter for closing the opening; above the front face a drum, on which is mounted a rollable, flexible element adapted to pass through the opening; the flexible element being provided with means for attaching a notice, so that the latter is situated in an extension and beyond the rollable element; the drum being rotatable for winding and unwinding; and means for arresting the drum when the attaching means have passed beyond the bottom wall toward the outside, and when the same means have attained a height at which the notice is exposed through the translucent front face, so as to prevent the notice from being rolled up on the drum.

Abstract: The invention relates to a device for taking up the thread in textile machines in which the tow or yarn travels from the drawing system to the wind-up unit through a closed conduit, either at the start of the spinning or after a breakage of the thread, comprising a bell shaped member, connected at its base to an aspiration unit through a flexible tube, and an electrically conductive spring lodged in the bell member so as to protrude beyond the mouth thereof, the spring being electrically connected to the aspiration unit, so that the aspiration action is started upon the spring contacting metallic parts, like the outlet of the thread to be fed to the drawing system.

Abstract: A fuel feeding system for internal combustion engines, of the type comprising a carburettor with a throttle controlling the main flow of fuel-air mixture to the cylinders, the carburettor further comprising a pre-mixing chamber for the air-fuel mixture, which communicates with the engine intake duct by means of ports located both upstream and downstream of the throttle in its closed condition, said pre-mixing chamber feeding also with air-fuel mixture a secondary chamber, communicating both with the atmospheric air and with the intake duct downstream of the said throttle, whereby the fuel-air ratio is kept constant both at idling and at low RPM of the engine.

Abstract: A membrane-air pump functioning as a tachometer, having a first flow circuit whose pneumatic flow or pressure values serve as speed-dependent guide parameters for control or regulating apparatus. A second flow circuit leads from the pressure or delivery side of the membrane-air pump to the suction side thereof, and in which there is incorporated a flow throttle and a spring-loaded relief pressure valve in series connection with the second flow circuit. Preferably, the flow throttle, as well as the relief pressure valve are adjustable.

Abstract: An internal combustion engine crankshaft governor disposed between the banks of angularly related sections of a fuel pump and comprising a crosspiece with centrifugal flyweights rotated by the crankshaft of the engine. The fly-weights act on a coupling and therethrough on a double-arm lever connected with one of the pump rack bars controlling fuel supply and balanced by a spring. The double-arm lever is rotatably mounted on a pivot spindle secured in the pump housing and positioned normally to the plane passing through the longitudinal axes of the rack bars. The tension of the spring is controlled by the angle through which a control lever turns. The control lever is rotatably mounted on another pivot spindle secured in the pump housing and positioned normally to the plane passing through the longitudinal axes of the rack bars.

Abstract: A device by which soap cakes are centrifugally fed, at high speed to a machine wherein imprints are made thereon. The device comprises a trunnion type fixture, revolving about a vertical axis, and carrying radially extending guides, whereon the soap cakes, taken from a slow-running conveyor band, are placed and caused to advance at an ever increasing speed. From such guides the soap cakes are then transferred to a high speed running conveyor band, interlocked with the rotary motion of the trunnion type fixture.

Abstract: A cable-controlled thickener for a settling tank is provided with rake arms which are hinged for movement in a vertical plane only at the lower end of a freely rotatable structure which is suspended from a driving mechanism, the suspension arrangement being located above the highest possible liquid level in the tank.

Abstract: A ditube type color television camera comprises a striped filter arranged near an object to be reproduced and including a striped filter element for screening blue or red color light only and a striped filter element for passing all visible lights, both the striped filter elements being arranged alternately side by side and assembled into one integral body such that the horizontal scanning direction of a chrominance signal detecting camera tube is perpendicular to the lengthwise direction of both the respective striped filter elements, and a dichroic mirror arranged between a brightness signal detecting camera tube and the chrominance signal detecting tube and adapted to separate the incident light into a green color light and red and blue color lights. The green light is accepted by the brightness signal detecting camera tube and the red and blue color lights are accepted by the chrominance signal detecting camera tube to obtain a brightness signal and a chrominance signal, respectively.

Abstract: A detector for ionizing radiation, comprising a semiconductor plate having electrode strips, which extend along the upper surface of the plate, which is passed through by the rays, from an edge portion of the semiconductor plate in the direction of its opposite edge portion, and which communicate with a signal utilizing arrangement, the latter of which forms signals from the signals tapped from the electrode strips in correspondence with or indicative of the locations of the focal points of the radiation spots produced on the detector. All electrode strips are positioned on one side of the semiconductor plate, and vary in cross-section along the direction of their longitudinal extension pursuant to a predetermined function, and wherein on the other side of the semiconductor plate there is mounted a common electrode covering substantially the entire surface of the plate.

Abstract: The method for preparing aromatic polyesters consists in the interaction between bis-phenols and dihalogenanhydrides of aromatic dicarboxylic acids taken at a molar ratio from 0.9 to 1.1, at a temperature from -10 to +30.degree.C, in the presence of alkali taken in the quantity of 2 - 2.5 moles per mole of bis-phenols, in a system water-organic liquid, at their volume ratio from 0.2 to 5; said organic liquid is capable of dissolving dihalogenanhydrides of dicarboxylic acids, is chamically inactive towards the starting components, and is miscible with water in the quantity of not less than 25 per cent. The process is carried out in the presence of water-soluble salts of metals standing in the first and the second groups of the Periodic System, taken either separately or in combination, in the quantity from 5 to 45 per cent by weight with respect to the weight of water taken for the reaction. The reaction mixture which is formed, is emulsion containing the end product. The emulsion is ready for direct use.

Abstract: A method of isolating rubber-like polymers from hydrocarbon solutions comprises at least three steps of steaming and a device for realization of this method in which the hydrocarbon solution is delivered into the upper section of the vertical column of the device, which is the first steaming step at which the temperature is maintained within the range from 80.degree. to 180.degree.C. At the first steaming step, the hydrocarbon solution is processed by steam which is delivered into the sections of the device through the steam intake. During this process the main bulk of the solvent is evaporated and the polymer is isolated in the form of granules. The solvent vapor, together with steam, are delivered to the condensation step. The isolated granules of the polymer are mixed with water to prepare an aqueous suspension by mechanical stirring means which are provided in each separate section of the column.

Abstract: Driving hollow piles by utilising a hollow drive tube inserted in the tube and applying hammer blows to an abutment at the bottom of this tube.