Abstract: A method of measuring the direction of mechanical vibrations, in which a plurality of points are marked on the surface of a vibrating object along the arc of a circle of a given radius at a constant pitch selected from a range of 1.2 to 1.8 of the amplitude of mechanical vibrations, forming a circular scale and while moving together with the vibrating object making up, depending on the shape of a trajectory of mechanical vibrations, stroboscopically still equal segments of a straight line or patterns. A group of straight line adjacent segments disposed at a minimum distance in a radial direction or patterns having a maximum overlapping and a radially arranged axis of symmetry is visually defined. An ordinal number is determined of one or two straight line segments or of one or two patterns through which the axis of symmetry passes, and the direction of mechanical vibrations is measured on the circular scale by an angle corresponding to this ordinal number.

Abstract: A method of melting steel in an oxygen converter from solid metal iron-bearing materials includes the steps of loading these materials and their subsequent heating up to their melting through burning hydrocarbon and solid carbon-containing fuels in an oxygen-containing gas. Then, when the temperature of the melt is 1525.degree.-1580.degree. C. the oxidizing slag is removed from its surface and thereafter a solid iron is loaded into the bath in an amount of 2-5% of the original quantity of the solid metal iron-bearing materials.

Abstract: An impact wrench has a casing accommodating rotatable anvil and shaft, the shaft supporting a hammer having a body with longitudinally extending passages in which pins are received for axial reciprocations which pins are engaged with the anvil in one position. A driving member received in an axial passage of the hammer body is coupled to the shaft to perform rotation and axial movement, the driving member being connected to the hammer body for rotation together therewith, and cooperating with a spring for moving the pins into a position, in which they are engaged with the anvil. The longitudinally extending passages open into the axial passage of the hammer body. Each pin has a bearing surface engageable with a respective bearing surface of the driving member during movement of the pins into the other position, the bearing surface being located on a portion of each pin protruding into the axial passage of the hammer body.

Abstract: An intrauterine device comprises a strip, a rod interconnected with the strip to form a T-shaped element therewith, a coil mounted on the rod, and a thread connected to the rod for dynamic monitoring of the IUD while in the uterine cavity. The coil has at least two layers, of which the first layer is made of an elastic polymer material, serves as a base, and faces directly the rod, while the second layer is made of metal.

Abstract: A contrivance for the cutting-deforming of cylindrical surfaces comprises a housing wherein are installed in succession a head with at least two deforming rollers and a tool-holder adapted for movement in a plane perpendicular to the direction of a longitudinal feed. The tool-holder has an opening for passing a workpiece to be machined and accommodates a main pair of cutting tools and at least one additional pair of cutting tools. The cutting tools of the main pair are disposed oppositely in relation to a cylindrical surface under machining and in one plane with the deforming rollers. The deforming rollers are disposed relative to the cutting tools of the additional pair at a distance not multiple of a distance between the main and additional pairs of cutting tools equal to 0.1-1.5 of the value of a set-up size of the cutting tools of the main pair.

Abstract: A method for measuring the amplitude of mechanical vibrations comprises the application of a measuring sign in the form of a measuring circle to the surface of the vibrating object, the radius of said measuring circle being of any length selected out of the range of measured values. Each measuring sign vibrating jointly with the object forms a figure of its own and the vibration amplitude of the object is measured along the radius of that particular measuring circle whose visually percepted parts are in contact in the center of the figure formed by said circle.

Abstract: A hand-held fastening element driving tool comprising a body accommodating a reciprocating actuator. The body carries a barrel wherein a striker is movable. The barrel holds a fastening element magazine. The striker consists of two parts closely fitted to each other. One part is a rectangular member whose cross-section follows the contour of a staple-shaped fastening element. The other member, together with the rectangular member, forms a figure circumscribing the head of a stem-shaped fastening element. The barrel cross-section is made as to suit the shape of the striker.

Abstract: A process for preparing a powder-like iron-sodium tartrate complex useful for the preparation of a solvent for cellulose which comprises reacting a salt of trivalent iron with sodium tartrate or primary sodium tartrate or a mixture thereof in an aqueous medium at a molar ratio of said reactants of 1:3.0-3.3 respectively, a concentration of the salt of trivalent iron of 0.5-0.7 mole/l of the starting reaction mixture and at a pH of the reaction mixture of 0.8-5.5 with the formation of a reaction mass containing the desired product; the latter is precipitated from the reaction mass by means of a precipitation agent such as methanol, ethanol, propanol or acetone at a volume ratio of the precipitation agent to the reaction mass of 0.7-1.5:1.0 respectively with the formation of a precipitate of the desired product and a mother liquor; the precipitate of the desired product is separated from the mother liquor and dried at a temperature of from 30.degree. to 105.degree. C.

Abstract: There is provided a method wherein the source material, rubber or vulcanization products is pulverized in an extruder wherein it is first compressed by a force of 0.2 to 0.7 MPa, then subjected simultaneously to a pressure ranging from 0.2 to 50 MPa and a shear force ranging from 0.03 to 5 N/mm.sup.2 while heating the material to a temperature ranging from 80.degree. to 250.degree. C. and then cooling said material to a temperature ranging from 15.degree. to 60.degree. C. The source materials can be used rubber goods, such as used tires and rejects of tire industry, footwear and industrial rubber production.

Abstract: A hydraulically-assisted power steering assembly comprises a housing of a fluid distributor having arranged therein a control valve the central bore of which receives a steering shaft, and a servohydraulic actuator; the steering shaft, servohydraulic actuator and control valve being kinematically linked for the control valve to be capable of axial displacement when the steering shaft is turned. The kinematical linkage includes a tubular sleeve disposed inside the central bore of the control valve to rotate raltive thereto and to be fixed thereto in the axial direction, one end of the sleeve being connected to the steering shaft by way of a screw transmission.

Abstract: An apparatus for designing three-dimensional structures comprises a unit for recording linear coordinates having a movable support and guideways, crosspiece, carriage and vertical rod which are coupled to one another and which cause displacement along linear coordinates. Sensors of displacement along linear coordinates X, Y, Z are coupled to the guideways, crosspiece, carriage and vertical rod for causing displacement. The apparatus also has an angle joint having three series-connected angle arms for rotation with respect to X, Y, Z axes, respectively. Sensors for recording a change in an angular coordinate .phi., .phi..sub.1, .phi..sub.2, respectively, of rotation with respect to X, Y, Z axes, respectively, are coupled to the angle arms, the point of intersection of X, Y, Z axes of entered coordinates of the movable support coinciding with a point of intersection of X, Y, Z axes of the angle arms for rotation with respect to X, Y, Z axes, respectively.

Abstract: A torch for gas-shielded arc welding in a deep narrow groove comprises a current contact torch bit (1) with an electrode (2) and a nozzle for supplying the shielding gas to the welding zone, which communicates with a gas-feeding tube (4) and is provided with at least one row of horizontally arranged holes (5). The nozzle is a closed chamber (3) made as a symmetrical wedge whose sharp edge faces the electrode (2) and is in one plane with the axis thereof. The side walls and bottom of the chamber (3) feature at least one additional row of holes (6) whose axes lie in one plane approximately perpendicular to the walls (7) of the groove.The torch is designed primarily for welding of very thick workpieces.

Abstract: An apparatus for gas-shielded arc welding comprises a mechanism (1) for guiding and feeding an electrode to a welding zone (3), a nozzle (4) for feeding a protective gas medium to the welding zone (3) and a TV transmission camera (6) for realtime monitoring of the welding process. A cover plate (8) made of an optically transparent material is provided at the end (7) of the gas nozzle (4) which is remote from the welding zone (3), and a lens (9) of the TV camera (6) is installed above the cover plate (8) coaxially therewith. The distance ("a") from the cover plate (8) to the lens (9) is selected in such a manner that the zone (3) of sharpness of the lens is located beyond the edge (11) of the gas nozzle (4) which is adjacent to the welding zone (10) and extends over the components of the welding process.An apparatus for gas-shielded arc welding is designed preferably for welding thick plate materials, for example, pressure vessel casings.

Abstract: Disclosed is a composition for treating acute gastrointestinal disturbances in animals, comprising lignin, hydrocellulose and mineral substances at the following ratio of said components in percent by mass:______________________________________ lignin 38 to 78 hydrocellulose 20 to 60 mineral substances 1 to 3 ______________________________________Disclosed also is a method for treating acute gastrointestinal disturbances in animals with application of the composition of the invention, wherein said composition in the form of 4-6% water suspension is administered orally to the animal in the amount of from 0.2 to 0.5 g/kg of the body weight per one administration as converted to dry substance, 2-4 times a day from 30 to 60 minutes prior to feeding.

Abstract: The burner for metallurgical furnaces comprises a main combustion chamber (7) and an auxiliary combustion chamber (5) presenting a plurality of outlet channels (6) communicating with the main combustion chamber (7). To the main combustion chamber there is fed in a pulsating manner a primary mix of fuel gas and air in stoichiometric ratio, and, during the intervals between the feed pulses, a secondary mix of fuel gas and air with a coefficient of excess air of 1.15 to 1.35 and at a rate of flow corresponding to 1 to 3% of the nominal rate of flow. To the auxiliary combustion chamber (5) there is instead continuously fed an auxiliary mix of fuel gas and air with a coefficient of excess air of 0.65 to 0.85 and at a rate of flow corresponding to 1 to 3% of the rate of flow of the primary mix. The combustion products of the auxiliary mix stay in the auxiliary combustion chamber (5) for a very short time, more particularly for about from 0.005 to 0.01 sec.

Abstract: Disclosed is a device for fuel delivery to an internal combustion engine, mprising a vaporizing element whose one section is heated by exhaust gases and the other section is disposed in an intake duct and has an operating surface, a fuel charge being injected onto said surface by an injection nozzle. In this device the operating surface of the vaporizing element extends from its section heated by the exhaust gases to a diametrically opposite portion of the intake duct, and the orifice of the injection nozzle is directd tangentially as close to the operating surface of the vaporizing element as possible.

Abstract: Disclosed is a trenching machine comprising a vehicle of a tractor type, a drive mechanism, a spoil discharge conveyor assembly, and a digging apparatus including a boom connected with its one end to the vehicle, a power means for raising and lowering the boom, a guide means mounted on the boom, a carrying means moving along the guide means, teeth mounted on the carrying means along alternate first cutting lines and second cutting lines in the direction of movement of the carrying means, the number of the teeth mounted along the first cutting lines being greater than that of the teeth mounted along the first cutting lines across the width of the carrying means being greater than the width of the teeth mounted along the secod cutting lines.

Abstract: Disclosed is a flux intended for use in centrifugal casting of bimetallic pipes and comprising calcium oxide, silicon oxide, boron oxide, sodium oxide and sodium fluoride, said components being contained therein in the following amounts:Percent by weightCaO, the baseSiO.sub.2 : . . 7 to 10B.sub.2 O.sub.3 . . . 10 to 12Na.sub.2 O . . . 18 to 24NaF . . .

Abstract: The process includes the delivery of molten metal for solidification in stepped flow and the blowing of a gas through the flow at a step located at the level of the surface of that portion of the flow which is directly fed for solidification, or at a level exceeding said level by as much as 300 mm.The apparatus for realizing said process comprises a tundish with a stepped bottom. A means for blowing the gas through the flow of metal is provided within that portion of the tundish which is located level with the upper generatrix of the outlet from the tundish or preferably, at a level about 300 mm above said generatrix.

Abstract: An inductive transducer intended, according to the invention, for converting the displacement of mechanical objects into an electric signal, comprising primary and secondary coils with cores, connected to one of mutually moving mechanical objects. The coils are arranged one opposite the other with a gap, wherein a main screen connected to the other moving object and at least one auxiliary screen are located. The auxiliary screen is set movably in a plane parallel to the main screen. The inductive transducer of this invention permits obtaining a functional relationship between the output signal and two or more displacements of mechanical objects, and thereby enables the relationship, including the slope thereof, to be controlled by simple means.