Abstract: A method for making sucker rods composed of a rod body (1) and end heads (2), consisting in upsetting the rod body end portions (8) carried out at a temperature that precludes softening of the rod body (1) metal, a thickening (9) being formed on each of the end portions (8), the width of the thickening in a direction perpendicular with the rod body (1) axis being equal to or in excess of the head (2) maximum diameter in the weld joint place, while its length exceeds the width of the heat-affected area (17) involved in the welding process. A transition portion (10) shaped as a solid of revolution has a cross-section which smoothly and continuously decreases from the thickening (9) towards the rod body (1). The upsetting procedure is followed by friction welding of each of the end heads (2) together with the thickening (9) on the rod body and portion (8) and by turning the weld joint zone.

Abstract: A current-limiting load cutout includes at least one contact pair (1, 2) with one contact (3, 5) rigidly linked to electrodynamic current limiter (9, 10) that is electrically connected to controllable pulse current supply (17), and at least one emergency state sensor (12, 13, 14) kinematically linked to contact displacement and clamping assembly (11) which is kinematically linked to the other contact (4, 6) of contact pair (1, 2). The current-limiting load cutout is equipped with a pair of power terminals (20, 21, 22, 23) per each contact pair (1, 2) with one power terminal connected to the other contact (4, 6) of the contact pair (1, 2) and the other power terminal connected to contact (3, 5) which is rigidly linked to electrodynamic current limiter (9, 10) equipped with terminal (15, 16) to which a controllable pulse current supply (17) is connected via an emergency state sensor (12).

Abstract: A method of making annular polymeric articles in which a workpiece is placed on a cylindrical shaping surface and is divided about the perimeter into alternating first and second portions. Moulding is done in two stages, the first stage including moulding the first portions, and the second stage including moulding the second portions interposed between the first portions at the same time maintaining the pressure exerted on the first portion, after which the workpiece is vulcanized. The mould includes a cylindrical core (1) having a shaped surface, mounted on a base and serving to accommodate the workpiece thereon, and elements (5, 6) for squeezing the workpiece arranged around the cylindrical core (1) alternately, the first elements (5) having each side surfaces (7) parallel with the axis of symmetry of this element (5), whereas the second elements (6) having each side surfaces (7) of the neighboring first elements (5) arranged at an angle (.alpha.

Abstract: A fully articulated suspension of tandem wheels of a transport vehicle having a frame (1) with axles (2) has torque reaction rods (17, 18, 19, 20) linked with the axles, at least one pair of double-arm levers (3), each linked mechanically with the frame (1) and, by one of its arms (4), with the corresponding axle (2) by an assembly (8) for the transmission of static and dynamic loads. Articulated to the other arm (5) of the corresponding double-arm lever (3) are stirrup-shaped plate springs (22, 23) of the corresponding spring assembly (21) for the absorption of dynamic loads.

Abstract: A method for controlling the rotational speed of a thermal engine residing in that a speed of rotation of the theraml engine is preset, a control signal based on this speed is shaped to control the speed of rotation of an electric motor according to the rotational speed of one of the input shafts of a differential mechanism kinematically linked with the electric motor and thermal engine fuel metering member is kinematically linked with an output shaft of the differential mechanism, and a correction signal is simultaneously shaped for the speed of rotation of the electric motor at transient operating conditions on the basis of the speed of rotation of the output shaft of the differential mechanism.

Abstract: The proposed chamber relates to sheet rolling in metallurgy. The chamber has two halves with a structure for closing, sealing, and opening the halves, and departing one half from the abutment plane, and includes two mechanisms for compacting the abrasive powder. The structure for closing, sealing, and opening the two halves along the abutment plane includes a ring having two cams divided by a slot. The ring sits in annular recesses separated by a slot and arranged on a support of the shaft of the mechanism for compacting the abrasive powder.

Abstract: The drive of a centrifuge utilized in biology, biophysics and medicine includes a casing accommodating a stator and a rotor whose shaft is installed in an angular bearing and rigidly connected with a flexible shaft fixed rotatably in a dumping device. The casing has passages for the circulation of lubricant and coolant, respectively, the rotor has a blind hole arranged coaxially with the rotation axis of the rotor; and the angular bearing has supporting and radial slide surfaces and is fixed in the rotor by means of the damping device so that the radial slide surface is located at least partly in the blind hole of the rotor, said bearing having passages ensuring circulation of lubricant over its supporting and radial surfaces.

Abstract: A distinguishing feature of an apparatus for orienting parts resides in the provision of members for picking-up improperly oriented parts in the form of identifying and limiting cams and of a reorienter which are located in a gap in guide and confining members which are offset downstream the gap in the direction of rotation of a vertically extending screw conveyor, the picking-up members being mounted in such a manner that the parts being oriented which have asymmetrical surface configuration with respect to a plane drawn through the middle thereof, at right angles to the axes thereof, and which are fed in improperly oriented position are engaged by these picking-up members, whereas the parts which are properly oriented are caused to pass by the reorienter.

Abstract: The hermatic seal unit is for a container having a lower portion and an upper portion of a slightly greater diameter. There is a shoulder portion at the junction of the upper and lower end portions. The device includes a cover conforming in shape to the upper portion of the element. Spreader elements are pivotally positioned in the cover. The hermetic seal element is positioned on a lower portion of the cover and the spreaders are in contact with the inner surface of the hermetic seal element. The hermetic seal element is in intermittent contact with the top portion and shoulder of the container in order to intermittently define the hermetic seal.

Abstract: A method of flash-butt resistance welding of a batch of like parts in pairs consists in that during flashing off of workpieces (1,2) they are brought apart or together depending on the resulting resistance obtained by comparison of the actual resistance between the workpieces (1,2) being welded with the specific short-circuit impedance of the welding circuit, which is determined during the upsetting of the preceeding pair of workpieces (1,2) after the welding current reaches a constant level.

Abstract: An apparatus for measuring the magnetic content of non-metallic samples includes operating and reference sine wave oscillators of identical frequency, a mutual synchronization loop for said oscillators, and a phase meter connected to the oscillator outputs for measuring the phase shift between their oscillations, when a test sample is placed inside the inductance coil of the operating oscillator. The mutual synchronization loop includes a switchable resistive attenuator for varying the resistance of the mutual synchronization loop according to the magnetic content of the test sample, such that the phase shift between the oscillations of the oscillators, with any value of content within the specified measuring range, is not in excess of 30 deg.

Abstract: An extruder head for making an anticorrosive tubular polymeric film has a body having an extrusion die, a hollow core mounted in the body and extending through the extrusion die, a molding passage terminating in an annular opening. Chambers are defined in the body of the core and die in the zone of the annular opening, the core chamber communicating with a passage for supplying a corrosion inhibitor, A pipe for supplying compressed air is provided in the interior of the core for blowing polymer melt into a tube. A scroll having a tangential nozzle for supplying compressed air is secured to one end of the pipe and is provided with a diaphragm in the form of a converting tube coaxial therewith and communicating with the chamber of the extrusion die. The other end of the pipe is made in the form of an opening-forming diverging tube.

Abstract: An optical information carrier includes a cylinder (1) with a recording layer (2) and bushings (3,4) located at butt ends of the hollow cylinder (1) and insulating the recording layer (2) from the environment. A method for erasing information recorded on the optical carrier uses a high-frequency electrical discharge produced inside the air-tight closed space (5) of the hollow cylinder (1). An optical storage device realizing the method includes an erasing unit (11) having a circuit for initiating a high-frequency discharge, which has electrodes (12,13) between which the optical carrier (10) is located so that the high-frequency discharge is initiated inside the closed air-tight space (5).

Abstract: The proposed pipeline is made up of pipe sections connected in succession by elastic outer coupling elements having their entire surface brought into intimate contact with pipe section joints. Provided at the ends of the pipe sections are recesses for accommodating coupling elements therein. The method for laying the above pipeline involves successive joining of its pipe sections by means of continuously placing several layers of a binder-impregnated tape onto the joints. The pipeline is lowered into a trench before the binder sets. The machine for carrying out the method includes a carriage with a frame on which there is mounted a mechanism for connecting, pressure-sealing, and insulating pipe sections of the pipeline. This mechanism is arranged at an angle to the path of travel of the carriage and capable of reciprocating and rotating relative to the pipe sections being joined into a pipeline.

Abstract: A heat engine speed governor, includes an electric motor of unidirectional rotation kinematically connected to an input shaft of a differential mechanism, the other input shaft of which is rotated by a heat engine, while the output shaft is kinematically connected to a fuel dosing device of the heat engine. In the channel for controlling the rotational speed of the electric motor, the speed meter measuring the rotational speed of the heat engine is connected to the input of a comparison unit whose input is connected to the output of a program forming unit forming a program of controlling the electric motor speed. The output of the comparison unit is connected to the input of an integrator whose output is connected to the input of the unit forming a control signal. The setting input of the control signal forming unit is connected to the output of the program forming unit while the output is electrically connected to the electric motor.

Abstract: A device for borehole hydraulic mining includes a pipeline for delivering fluid into the hole accommodated inside a pipeline for bringing pulp to the surface and featuring a constant inside diameter along the entire length of this pipeline. The pipeline for delivering fluid into the hole carries a hydraulic jet. The device also has a hydraulic elevator with a fluid and pulp mixing chamber secured to the lower end of the pipeline for bringing pulp to the surface, and a nozzle secured to the lower end of the pipeline for delivering fluid into the hole. The fluid and pulp mixing chamber and the nozzle of the hydraulic elevator enclose the pipeline for drilling fluid into the hole with clearances allowed.

Abstract: An electric-arc device has two aligned electrodes separated by an arc gap. The position of an electric arc in the arc gap is stabilized by using at least two coils, each made as a rectangular loop and bent around a cylindric surface. The coils are mounted around the electrodes such that their arcuate sides form two respective circumferences whose centers lie on a line parallel to the axis of the electrodes. The length of the straight side of each coil is no less than the length of the arc gap. The coils are connected to a power supply such that currents flowing along the adjacent straight sides of the neighboring coils are oppositely directed. These opposing currents induce a magnetic field into the arc gap which controls the location of the electric arc.

Abstract: A rectifier electric drive has a synchronous machine shaft position transmitter (2) which is electrically connected to an output of a permanent storage (10). The output bus of this storage (10) is connected to control inputs (11) of code-to-pulse duration converters (12) whose number is equal to the number of windings of the synchronous machine (1). The outputs of the code-to-pulse duration converter (12) are connected to pulse duration master inputs (17) of respective switching devices (18) having their pulse polarity master inputs (26) connected to respective outputs of the permanent storage (10). The outputs of the switching device (18) are connected to the windings of the synchronous machine (1). Also provided is a voltage to pulse repetition period conversion unit (34) having its input (35) connected to a voltage source (25) and also connected to the switching devices (18).

Abstract: A flaw detector includes a readout unit; a sensor of cycles or lines, and a mechanism for driving the magnitogram and a magnetosensitive transducer. A permanent memory is made as a magnetic medium and a recording magnetic head, a test data processing unit, an interface, and a computing device are provided.

Abstract: Method of induction motor vector control in Cartesian and polar coordinates, whereby control of the rotor speed, induction motor torque, as well as dynamic, power, and thermal processes, which is interconnected with control of the rotor flux linkage amplitude and phase as functions of the desired induction motor torque, is achieved in an electric drive by synchronizing the stator current control by a controlled synchronization frequency by means of three control inputs, one control input is used to control the synchronization frequency and phase as functions of the desired rotor torque and speed; two other control inputs are used to control the amplitudes of ortho-phasal and current phase to a phase angle equal to the ratio of the ortho-phasal and co-phasal and ortho-phasal currents as functions of the desired induction motor torque, the actual desired amplitude of the rotor flux linkage, and magnetizing characteristic of the induction motor, while the amplitudes of the ortho-phasal and co-phasal currents is