Abstract: The high frequency welding machine utilizes the computer or central processing unit, various means for sensing various parameters of the welding machine, and various means for activating various components of the machine. In particular, the computer maintains information on the parameters of the welding machine and automatically selects the necessary commands for the various components of the machine.

Abstract: A television system, the composite color television signal (E.sub.M (t)) whereof is generated using reflected modulated signals (E.sub.3 (t)), wherein at the transmitting side video signals (E.sub.1-1 (t), E.sub.1-2 (t)) are used to quadrature modulate subcarriers at the zero and .+-.(.pi./2) phases, thereby generating folded-band signals (E.sub.3 (t)) at subcarrier frequencies selected such as to provide the required phase shifts of the subcarriers in adjacent lines of one frame and in identically numbered lines of adjacent frames. The thus generated folded-band signals are transmitted during time intervals allocated for them in the composite color television signal (E.sub.M (t)). At the receiving side, separating messages of folded-band signals (E.sub.3 (t)) out of the received composite color television signal (E.sub.M (t)) and delaying these messages in delay units (11) for time intervals constituting multiples of the television scan.

Abstract: The frame for hanging files may be quickly assembled and does not require tools or any type fastening devices. The rails for holding the files are positioned within the channel of a rail housing, that is positioned at the top end of rail supports. A locking bar with a cam head pivots within the rail housing to first bear against the rail and then to hold the rail in position within the channel of the rail housing. Support bars are then used to hold the locking bar in position and to provide stability for the frame.

Abstract: The present invention relates to medicine.A method for treatment of cholelithiasis and chronic hepato- and cholecystopathies secondary to that disease consists in that the patient with concrements not in excess of 2 cm in size are instituted on the first day of treatment a diet which is not causative of deterioration of their general state, whereupon the patients' gastrointestinal tract is evacuated, a cholinolytic spasmolytic agent is administered, and tubage is performed, accompanied by oral administration of a vegetable oil; on the second day of treatment the patients are prescribed a meal of food which promotes a cholagogic effect, and abundant drink, whereupon the motor function of the intestine is stimulated until the concrements are eliminated.

Abstract: The device consists of a Portable Dryer for drying the interior of articles, such as ski boots, ski gloves, etc. It includes articulated tubing that can be forced all the way into the toe portion of the ski boot. At the other end of the articulated tubing is a distribution connector for connecting to a suitable means of forcing air through the tubing and into the interior of the ski boot for drying purposes.

Abstract: The method first provides for cleaning the bow hairs with a mixture of alcohol, which may typically be applied with a terry cloth material. After the bow hairs are permitted to dry, a mixture of rosin and alcohol is applied to the bow hair. This is done to make rosining the bow easier and to improve the tone production. After the bow hair is again dried, it is combed.

Abstract: The method comprises generating pulses of a specified repetition rate, duration modulating each pulse, composing packets of stimulating pulses with a specified packet duration and specified pause duration between pulse packets, and modifying the duration of the pulse packet applied to the object in accordance with an assessment of the electrophysiologic parameters of the state of the biological object's interelectrode section, this assessment being performed simultaneously with object stimulation. The apparatus comprises a pulse generator, a pulse duration modulator, a stimulating pulse power amplifier, a first signal shaper generating a signal indicative of the object's response to stimulating pulses, a variable-duration pulse generator providing pulse packet duration signals, a second signal shaper providing signals of pulse packet duration, and a modulation control signal clipper.

Abstract: A method of making a half-tone reproduction of an image includes the step of forming an image consisting of half-tone dots having a greater size at darker image units areas. Each image unit area is divided into a plurality of elements. The elements are formed dark, making up a half-tone dot, or light dependent on the comparison between the reflectivity of a corresponding unit area and values of a half-tone function which is a two-dimensional periodic function of the coordinates of the elements. The method further includes determining variation of the reflectivity of the image in two mutually opposite directions at the place of location of each unit area and comparing the reflectivity with the half-tone function value corresponding to the coordinates of the element shifted with respect to the element to be formed in a direction of a greater decrease in reflectivity, if such a decrease takes place. As a result, the half-tone dots lying on an image contour are shifted towards a darker part of the image.

Abstract: The invention relates to the heterogeneous catalysis.A catalyst according to the invention contains the following components in % by mass:______________________________________ product of calcination of iron oxide 30-50 based pyrite thermoplastic polymer the balance. ______________________________________The invention may be used in various industries, e.g. in the oil refinery.

Abstract: The invention consists of a plurality of separate pieces that may be fastened together to create a portable automobile snowplow. Each of the parts is folded in a specified fashion in order to define a particular portion of the snowplow. Then, by means of tabs and slots or other suitable fastening means, the parts may be affixed together. For simplified storage, the parts may be sized in a manner to permit them to be nested within each other.

Abstract: A cardiac valve prosthesis comprising an annular body housing a closure member in the form of two cusps. The cusps open and close freely and rotate simultaneously around the body axis, checking the forward and reverse blood flows through the prosthesis to simulate the operation of the cardiac valve. To have the operation of the prosthesis resemble that of the natural valve, the lateral surface of at least one cusp is provided with a recess to produce a controlled blood backflow through the prosthesis by causing the blood flow through the prosthesis to swirl.

Abstract: The disclosed circuit for actuating headlights has two time delay circuits, an AND gate, a power relay, and connections for appropriate installation to the circuitry of the automobile. When windshield wipers are operated, a pulse of the windshield wiper motor causes the first time delay circuit and the second time delay circuit to run timing cycles. The timing cycle of the first circuit is shorter than the timing cycle of the second circuit, and the first circuit is restarted with each pulse of the windshield wiper motor. Each timing delay unit has an output signal which is a logical "one" when a cycle is being run and a logical "zero" when a cycle is not being run. When the AND gate receives logical zeros from the second time delay circuit, and logical ones from the first time delay circuit, windshield wipers are in use and the headlights and parking lights are switched on. A daylight detection circuit may be incorporated to provide safe use of the unit in dusk hours.

Abstract: The well reamer comprises a sub for attaching it to the drive means, a hollow housing with a central channel and radial openings in its side wall, projectable rolling cutters with shanks, mounted in the radial openings of the housing, and a mechanism for projecting the rolling cutters, including a piston and a member for locking the rolling cutters in their operating positions. The annular piston is connected with the housing for joint rotation therewith, and is regidly connected with the sub. The wall of the piston has radial passages made therein, establishing communication between its central channel and so annular space defined between the walls of the piston and of the housing. The member for locking the rolling cutters is accommodated with a clearance in the central channels of the piston and of the housing, and has an annular shoulder. The central channel of the piston defines a seat for engagement with the annular shoulder of the locking member.

Abstract: The invention relates to animal-milking machinery. The apparatus for determining the yield of milk by a milking machine, comprises a discrete sensor including a reception chamber and a measurement chamber. The reception chamber receives a float element mounted on a hollow rod (11) carrying a permanent magnet and a valve member received in the measurement chamber a vacuum gauge includes an array of reed relays electrically connected to a computing unit, including a similar array of pulse counters, and being connected to a pickup arranged in the area occupied by the permanent magnet (13) as the level of milk in the discrete sensor rises to a predetermined level.

Abstract: A contacting device for an installation for ultrasonic dimensional treatment of workpieces includes a frame having a base; a longitudinal carriage positioned on the frame; a transverse displacement carriage positioned on the base of the frame; an acoustic head electrically coupled with an ultrasonic generator and positioned on the longitudinal displacement carriage, the acoustic head having a tool; a working table positioned on the transverse displacement carriage; a mechanism for controlling vertical feed of the working table to and from the tool; and a mechanism for vertically moving and applying contact force to the working table. The mechanism for vertically moving and applying contact force includes a lever rocker having a roller support mounted on one end of the lever rocker and contacting the working table, and a pressure roller mounted on the other end of the lever rocker so that the roller support lifts the working table and applies contacting force to the working table.

Abstract: The device for ultrasonic machining of articles in a liquid medium comprises two groups (2, 3) of acoustical-electrical transducers (4) arranged on an elastic element (7), filled with a liquid medium (8), in staggered order at a predetermined distance from articles being machined. The acoustical-electrical transducers (4) of the group (2) are connected to the output of an ultrasonic generator (1). The acoustical-electrical transducers (4) of the group (3) are connected to the output of the ultrasonic generator (1) through a phase-pulse modulator (5) connected to a saw-tooth voltage generator (6).

Abstract: A method for pressure welding of parts with heating with an arc moving in magnetic field in which the parts (2,3) are placed coaxially with each other with a working gap (.delta.) between their ends magnetic field is created in the gap (67 ) and electric arc (6) is fired to heat the ends of the parts (2,3). A d-c component of voltage of the arc (6) is measured, and when this component reaches its minimum value corresponding to a temperature of the ends of the parts (2,3) at which plastic deformation of the material of the parts can occur, a pulsed increase in the arc current is carried out, with subsequent upsetting of the parts (2,3).

Abstract: The turbine rate-of-flow transducer incorporates a cylindrical body consecutively located wherein in the cocurrent direction there are a first flow straightener, a device for balancing an axial force of the flow, a rotor and a second flow straightener. The device for balancing the axial force of the flow is a truncated cone with passages spaced equidistantly apart all the way along the circumference of the side surface. Each passage is directed so that a projection of its longitudinal axis makes with a plane through an axis of revolution of the rotor an angle between 7.degree. and 20.degree., the vertex whereof points towards the vertex of an angle inclined whereat are the vanes of the rotor. The aggregate cross-sectional area of the passages in the zone of the large base of the means of balancing amounts to 2-6% of the area of flow section at the inlet into the rotor. A pickup located in the body in the zone of the rotor generates a pulse each time a vane of the rotor passes.

Abstract: This invention relates to industrial physics and, in particular, to methods of laser treatment. The laser treatment method consists of irradiation of the surface of an object by laser beams directed to treatment zones having a desired shape, wherein laser beams are subjected to spatial phase modulation dictated by the shape of the treatment zone and the prescribed distribution of intensity and are, simultaneously, rotated.A device realizing this method comprises a source of laser radiation with an optical system for delivery of laser radiation to the object, which is positioned on the optical axis of the source and includes at least one phase computer-designed element made as a reflecting or transmitting plate with a micropattern on the surface thereof, which is dependent on the shape of the treatment zone, distribution of laser radiaiton intensity, and its wavelength (.lambda.), the height (h) of the peaks of the micropattern varying, from the base (a) to the top (b), from 0 to .lambda.