Abstract: The mill includes a stand on which at least three work rolls are mounted. At least two of the work rolls are secured in the roll housing chocks and provided with a drive means. The rolls rotate in opposite directions at different peripheral speeds increasing along the passline. At least one work roll is provided with a screwdown. The mill according to the invention for rolling metal strip is characterized by the axis of the middle work roll being offset with respect to the plane passing through the axes of the extreme work rolls towards the point where the metal strip being worked enters the first pair of work rolls, formed with the middle and the first extreme work rolls, as viewed in the direction of the passline, and towards the point of the metal strip emergence from the second pair of work rolls, formed with the middle work roll and the second extreme work roll.

Abstract: An inflatable toy is described, in the nature of a free-standing punching bag, which includes front and rear panels joined to each other to form a substantially sealed enclosure capable of retaining gas under pressure. An internal or intermediate panel is provided inside of the enclosure and is spaced substantially equally from the front and rear panels. The front and intermediate panels are formed of a transparent material while the rear panel is opaque. Images are imprinted on the internal surfaces of the three panels, the images cooperating with each other to produce an illusion of three dimensions and composite image which continuously changes with different angles of observation of the inflatable article.

Abstract: Disclosed is a current supply arrangement for an electric machine rotor winding, comprising a slip ring made of a high-strength steel, fitted onto the rotor shaft with an electrically insulating layer therebetween, and adapted to be engaged by contact brushes of current collecting bars of the contact brush device. The slip ring is provided with a cylindrical recess cut in the end face thereof and disposed coaxially with the inner opening of said ring. The recess serves to receive a distributing ring made of a material having a high electrical conductivity, and provided with a current conducting bar secured thereto and electrically connected to the rotor winding by means of current conducting screws and a number of current supplying bars. The distributing ring is adapted to make electrical contact with the slip ring through an additional electrically conductive layer made of a homogeneous material and having a resistivity lower than that of the slip ring material.

Abstract: A catalyst for the synthesis of aromatic monoisocyanates comprising 1.64 to 16.6% by weight of palladium chloride, 0.16 to 47.6% by weight of an oxide of a metal of Group VB of the periodic system, 1.5 to 81.8% by weight of an oxide of a metal of Group VI B of the periodic system, 1.64 to 89.8% by weight of pyridine or an alkylsubstituted pyridine.The use of the catalyst according to the invention in the synthesis of aromatic monoisocyanates makes it possible to obtain a high degree of conversion of the starting compound of up to 100%, a high yield of the desired product of up to 97%, and increased productivity of the catalyst of up to 40 g of the desired product per g of PdCl.sub.2 per hour.

Abstract: Fluid-actuated percussion mechanism includes a housing with an internal cylindrical space receiving a reciprocating piston dividing the space into a working stroke chamber and an idle stroke chamber. The mechanism further includes distributing means mounted in the housing and communicating the chambers and the source of the working fluid. The housing also accommodates a work-performing member adapted to receive impacts from the piston. The distribution means includes at the inlet of at least one of the chambers a valve made in the form of a resilient element. The surface of the distribution means has made therein valve seats of which the number corresponds to that of inlets for supplying the working fluid into the chamber.

Abstract: A method of determining the quality of oriented polymeric materials, based on the effect of small-angle scattering, comprises the passage of a beam of monochromatic, polarized and collimated light through a given material, extracting the scattered reflections, converting them to a train of electric pulses, and determining the degree of orientation of the material using the pulse spacing. An apparatus for determining the quality of oriented polymeric materials comprises a source which produces monochromatic, polarized and collimated light passed through an oriented polymeric material, and a housing which accommodates an analyzer, a mask and a scattered reflection converting unit to convert the scattered reflections extracted by the mask to a train of electric pulses, which are arranged serially along the direction of the light beam after the material. The scattered reflection converting unit comprises a scattered light detector coupled to the recorder.

Abstract: A glassmaking tank furnace which comprises a basin, a heating system, a housing which includes a roof and a gas flue, a cooling system, a feed port and a discharging port. The bottom and walls of the basin and at least a part of the housing formed with the feed port are defined by fittingly adjoining metal tubes of the cooling system, which ensure a continuous operation and long service life of the furnace and set up favorable conditions for further intensification of the melting process.

Abstract: A rotor, for a synchronous salient-pole electrical machine, having a rim built up in annular layers consisting of segments provided with recesses forming slots on the rim circumference, in which like poles are mounted and which form a plurality of groups distributed in series over the rim circumference, the distances between the adjacent slots in all the groups being the same and different than equal distances between the adjacent slots of different groups. In some of the segments the adjacent recesses are spaced from each other by a distance equal to the distance between the slots within a group.

Abstract: A method for producing fibrous sheet material comprising dispersing fibers in a gas stream to obtain a gas-fiber stream, supplying the gas-fiber stream onto a flat screen, removing gas from the gas-fiber stream through said screen to form a fibrous layer thereon, removing part of the gas from the gas-fiber stream prior to supplying it onto the flat screen, simultaneously damping transversal pulsations induced in the gas-fiber stream during the course of its movement. The fiber concentration is increased to 20-500 g/m.sup.3. The fiber concentration is chosen in accordance with the specific fiber and its properties. An apparatus for carrying out this method comprises a slot nozzle having side walls normal to converging frontal walls, its inlet opening communicating with means for dispersing fibers in a gas stream, while its outlet opening communicates with a chamber.

Abstract: The mercury contact comprises a solid metal base of beryllium, wetted with mercury. The method of manufacturing the mercury contact includes periodically dipping the cleaned solid metal base of beryllium into chemically pure mercury through a mixture of saturated water solution of chromic anhydride and a 40 percent solution of hydrofluoric acid water, taken in a 1:1 ratio by volume.

Abstract: According to the invention a truncated conical disc is provided with inward and outward flanges carrying projections and a plurality of curved bars or ribs located so that the projection thereof onto a plane perpendicular to the axis of spinning is a plurality of converging spirals. The height of each rib at a section through the normal to the truncated conical surface of the disc and the plate is between 0.2 and 0.5 the height of the projections. As reviewed in section, the edge of each rib, meets head-on the flow of the liquid clarified, and makes an angle approximately 90 deg. with the truncated conical surface of the disc.

Abstract: A veneer lathe in which a log is rotatably supported, and powered endless chain members having sharpened projections on their outer side are employed to rotatably drive the log. A knife is provided at the log surface so that the log is cut in a circumferential direction as the knife moves toward the longitudinal axis of the log and the log rotates. Log pressure means are provided to press the log surface adjacent the knife edge, and a conventional transport mechanism moves the assembly of the endless chain members, the knife, and the log pressure means toward the longitudinal axis of the log in synchronization with the log rotation so that a veneer is continuously cut from the log.

Abstract: Proposed herein are bis-trialkylstannyl derivatives of chlorinated polycyclic dicarboxylic acids, of the general formula ##STR1## wherein R is a lower alkyl, R'=H,CH.sub.3, n=0,1, which are obtained by a condensation reaction of anhydrides of the respective dicarboxylic acids with hexaalkyldistannoxanes R.sub.3 SnOSnR.sub.3, wherein R is a lower alkyl, in the medium of an organic solvent.The resulting compounds exhibit antifouling activity and represent active components of coatings intended to protect ships' bottoms and the submerged parts of various hydraulic structures against fouling. Antifouling polymer coatings containing said compounds are more effective and durable, and over five and more years prevent biomasses of marine organisms of vegetal and animal origin from accumulating on the surface.

Abstract: A sealed inlet for bunched conductors comprises a resilient sleeve located inside a body having a flange on one of its ends, the sleeve following the shape of the body and having a flange on one of its ends tightly pressed against the body flange. Located inside the resilient sleeve are resilient sealing elements, each accommodating a conductor. Installed directly on one of the external walls of the resilient sleeve is a hold-down strap with a retainer extending through a hole in the body wall and urging the hold-down strap against the resilient sleeve.

Abstract: An arm pipe for a record player tonearm comprises a composite material essentially consisting of a thermoplastic resin and graphite powder. The composite material is prepared by kneading the components, rolled to impart a degree of orientation to the graphite powder particles, which are in the form of flaky graphite and then molded into a pipe, along the surface of which the graphite particles are oriented. Arm pipes wherein the composite material is oxidized at the surface of the pipe and arm pipes wherein the composite material is carbonized or graphitized are also included. A light weight, rigid arm pipe having a high specific modulus of elasticity is obtained through a simple procedure at low cost.

Abstract: A method of making an explosion proof contact assembly and the resulting contact assembly are described wherein the electrical contacts are first rigidly mounted on a contact unit or sub-assembly prior to the molding operation. This approach allows complete assembly of the contacts prior to molding of the contact unit within the insulating body, while maintaining required flame path for explosion proof atmospheres. The present invention eliminates post-molding assembly operations which are extremely difficult and substantially raise the cost of producing the contact assemblies.

Abstract: The method for preparing furfuryl alcohol comprises hydrogenation of furfural in the presence of a mixture of a copper-chromite catalyst promoted with oxides of alkali-earth metals, and ceramic material. This mixture is disposed in four beds at a ratio between the catalyst and the ceramic material of 1:2 in the first bed, 1:1 in the second bed, 2:1 in the third bed and 2.5:1 in the fourth bed downstream of the flow of the mixture of furfural and hydrogen. The hydrogenation process is conducted at an elevation of temperature from 50.degree. to 140.degree. C. under a pressure of from 60 to 65 atm, followed by the introduction of monoethanolamine or hydrazine hydrate into the resulting catalyzate.

Abstract: A duct for a magnetohydrodynamic generator having diagonally conductive walls formed with extended modules of a suitable electrically conductive material, which are electrically insulated from one another and oriented so that each module has sections inclined at an angle with respect to the longitudinal axis of the duct, said angle being varied within .pi./2.gtoreq..alpha..sub.max .gtoreq..alpha..gtoreq..alpha..sub.min .gtoreq.0. The extended modules are C-shaped and oppositely disposed in an alternating manner so that the number of electrical breaks per unit length of the duct along its axis on the walls formed with sections of the modules inclined at the angle .alpha..sub.max with respect to the duct axis exceeds twice the number of electrical breaks along the duct axis on the walls formed with sections of the modules inclined at the angle .alpha..sub.min with respect to the duct axis.

Abstract: A method for the production of 2,4,6-tri(3,5-ditertiary butyl-4-hydroxybenzyl)mesitylene which resides in treating a mesitylene solution in chloroalkane simultaneously with sulfuric acid used as a catalyst and a solution of 2,6-ditertiary butyl-4-methoxymethylphenol or bis-3,5-ditertiary butyl-4-hydroxybenzyl ether in chloroalkane at a temperature of -20.degree. to +20.degree. C. This results in a reaction mixture consisting of an acid phase and an organic phase including the target product. The phases are separated. The organic phase is subjected to neutralization by the treatment thereof with gaseous ammonia used as an alkaline agent. The precipitate of ammonium sulfate is separated and chloroalkane is removed from the remaining solution.The proposed method makes it possible to obtain the target product with a yield of 88 to 90% and a melting temperature of 239.degree. to 239.5.degree. C.The method prevents the formation of effluents, and the amount of phenol wastes is considerably reduced.

Abstract: A device for gradient heating of a wire includes a vacuum chamber with a thermostatically regulated base and a means for producing a temperature gradient arranged thereinside. The means for producing a temperature gradient is designed in the form of a metallic cylinder with one end thereof having an electric heater and the other end being attached to the thermostatically regulated base of the vacuum chamber, serving as a cooler. The surface of the metallic cylinder is furnished with transverse grooves intended for locating therein a wire being heated and interconnected by a longitudinal groove intended for passing the wire from one transverse groove into the other.