| Patent Number |
Title Of Patent |
Date Issued |
| 4404893 |
Hydraulic mine prop |
September 20, 1983 |
| A hydraulic mine prop includes an inner piston-like prop guided within an outer cylinder-like prop, and a roof fall valve. The interior space of said inner prop communicates freely with the working chamber of the prop, and the roof fall valve is arranged outwardly on the prop and rigidly |
| 4261617 |
Method of controlling the working motion of a cutting tool of a tunnel-driving machine over the |
April 14, 1981 |
| A method of controlling the working motion of a cutting tool of a tunnel-driving machine over the breast, wherein the actual position of the cutting tool is ascertained in consideration of the position of the tunnel-driving machine relative to the desired section of the tunnel, chara |
| 4254167 |
Process of treating sponge iron for protection against reoxidation and apparatus for carrying ou |
March 3, 1981 |
| A process for treating sponge iron to protect it against reoxidation and/or corrosion during storage and transit comprising the steps of tumbling sponge iron which is in particle form with a pre-prepared blend of caustic lime powder and an adhesion promoting additive selected from the gr |
| 4236627 |
Cutting machine |
December 2, 1980 |
| A cutting machine includes an endless conveyor and a loading ramp having movable loading arms which continuously shift the cut material in an upward direction of the loading ramp to conveyor. The rear deflector wheel of the conveyor is driven by a squirrel-cage motor, and the drive of th |
| 4225144 |
Device for sealing the gap between component parts rotatable relative to each other |
September 30, 1980 |
| A device for preventing penetration of dust from the outside inwardly into an annular gap between a cutter arm of a cutting machine and a rotatable cutting head carried on said arm, said cutting head having an interior space containing lubricating oil, said device comprising a first seal |
| 4197035 |
Shield-carrying roof support unit |
April 8, 1980 |
| It is an object of the invention to provide an improved shield-carrying roof support unit which has a linkage for adjusting the elevation of the cap while the pivotal connection between the cap and the shield is constrained to move substantially at right angles to the base frame. The |
| 4194279 |
Apparatus for supporting two universal joint shafts and equipment comprising a strip-treating st |
March 25, 1980 |
| Two universal joint shafts for driving a pair of working shafts of a strip-treating stand are arranged one over the other and adapted to be shortened so as to be uncoupled from said working shafts. For a replacement of one or both working shafts, the unversal joint shafts which are u |
| 4193778 |
Device for removing dust-shaped particles from an air stream serving for the ventilation of mine |
March 18, 1980 |
| A gas scrubber having an air inlet and an air exit, said scrubber comprising: a plurality of venturi tubes having upstream ends and downstream ends, the venturi tubes being arranged parallel to each other; a centrifugal separator in communication with the downstream ends of the ventu |
| 4191504 |
Duct-mounted turbine and method of installing the same |
March 4, 1980 |
| An annular inner vane cover is axially spaced from a rotatably mounted runner and has first and second flanges. An annular water guide is disposed between said runner and said inner vane cover and has a third flange, which is jointed to said first flange. An inner tubular housing has |
| 4188069 |
Mining machine having walk-on platform on cutter arm |
February 12, 1980 |
| In a cutting machine having a cutter arm which is mounted at one end for universal pivotal movement and which carries at its free end a cutting tool: a walk-on platform covering at least part of the cutter arm, said platform being box-shaped in cross-section and having a width greater th |
| 4186971 |
Device for cooling cutting teeth of cutter heads of cutting machines |
February 5, 1980 |
| In a rock cutting machine which includes a cutter arm having an inner end and an outer end carrying a toothed cutter which rotates about an axis transverse to the longitudinal dimension of the arm, an improved cooling device for the cutting teeth of the cutter comprising a nozzle device |
| 4178000 |
Sealing provided between the walls of a cooled continuous mould and the head of a starter bar |
December 11, 1979 |
| In a continuous casting plant the space between the walls of a cooled continuous casting mould and the head of a starter bar is sealed. The seal is achieved by means of an elastic member inserted in an annular peripheral recess of the starter bar head. The elastic member closes the r |
| 4176707 |
Method of continuously casting a steel strand |
December 4, 1979 |
| In a method of and apparatus for continuously casting a steel strand with a mould having a closed bottom molten steel is cast from a casting container into the mould, and the mould is moved away in a substantially horizontal direction to form a strand with a solidified skin and a liquid |
| 4175227 |
Process for automatically vertically butt welding steel sheet material for containers |
November 20, 1979 |
| Chemically resistant steels for containers are butt welded by using an automatic welding process. The electrode is oscillated over the whole width of the seam and is kept to a maximum thickness of 1 mm. |
| 4173251 |
Mould arrangement to be used in a continuous casting plant |
November 6, 1979 |
| A mould arrangement for continuous casting plants has a mould with side walls adjustable to various strand sizes, supporting devices below the mould for guiding the emerging strand, and holding devices releasable from above for securing the supporting devices to the mould. The supporting |
| 4170076 |
Container arrangement for treating lumpy and grained materials in a packed bed with gaseous medi |
October 9, 1979 |
| A container arrangement for treating lumpy and grained materials in a packed bed with gaseous media has at least one container with an opening and a device for closing the opening. In the at least one container at least two chambers are formed whose bottom portions communicate with each |
| 4169745 |
Method of joining frogs of wear-resisting manganese steel castings to rails of carbon steel |
October 2, 1979 |
| A method of joining frogs consisting of wear-resisting austenitic manganese steel casting to rails of carbon steel by welding and with the aid of an interposed connector consisting of austenitic low-carbon steel, characterized in that the connector is first welded to the regular rail or |
| 4169569 |
Base anchorage for heavy machinery |
October 2, 1979 |
| In a base anchorage for heavy machinery, in particular converters, an anchoring plate is concreted into a base and is firmly connected with at least one bolt, whose end projecting out of the base is provided with a screw thread. The at least one bolt is produced of high-tensile strength |
| 4168817 |
Rail switch |
September 25, 1979 |
| A rail switch in which two wing rails are engageable with a frog in alternation, characterized in that guide members are provided, which are held in position relative to the wing rails and extend under and are engageable with the frog or parts rigidly connected to the frog to prevent |
| 4167998 |
Arrangement for tensioning a gateway conveyor in a sloping gateway |
September 18, 1979 |
| An arrangement for tensioning a gateway conveyor in a sloping gateway during longwall working using supports having base frames which are provided with pulling and shifting hydraulic actuators, wherein in a tensioning device is provided at least at one of the supports and is connecte |
| 4164252 |
Strand guiding roller for a continuous casting plant |
August 14, 1979 |
| A strand guiding roller to be used for a continuously cast strand includes a plurality of roller bodies designed as exchangeable wear sleeves and arranged on a drivable shaft at a distance from each other, a plurality of bearings distributedly arranged over the length of the roller to ro |
| 4162104 |
Cutting machine |
July 24, 1979 |
| A cutting machine having a universally movable cutting arm provided with a plurality of cutting heads in which the cutting machine's oil reservoir is mounted within the cutting arm and cooled by the water cooling system for the cutting machine's motor. The cutting heads and the reduction |
| 4159746 |
Bit of circular cross-section |
July 3, 1979 |
| A cutting bit includes a bit tip and a shaft having a portion tapered toward the tip and having a reduced diameter between the tapered portion and the portion intended to be inserted in a holder. The bit tip has the shape of a body of revolution with convex generatrices. |
| 4159090 |
Railway switch for vignoles rails |
June 26, 1979 |
| Railway switch for Vignoles rails, comprising a frog tip and a pair of wing rails arranged for swivelling movement, one of said wing rails engaging the frog tip in its end position and being supported in this position in direction of engaging the frog tip by means of movable supporting m |
| 4157773 |
Grease gun |
June 12, 1979 |
| A grease gun comprising a hollow piston rod driven by a pressure fluid upon an annular drive piston at one end of the rod, compressing a supply of grease by an annular plunger at the other end of the rod into a receiving chamber within the piston rod, which chamber cooperates with a stat |
| 4152126 |
Equipment for removing dust particles from an air stream |
May 1, 1979 |
| Apparatus for removing dust particles from an air stream includes a tubular housing having an inlet end and an outlet end; a plurality of Venturi tubes having open inflow ends and open outflow ends supported side-by-side within the housing, with their axes parallel to the housing axis so |
| 4150715 |
Supporting and guiding means for cast strands |
April 24, 1979 |
| In a supporting and guiding means for continuously cast strands including a plurality of exchangeable supporting elements each provided with rollers at opposite sides thereof, neighboring supporting elements are provided with shoulder-like projections where they are separated from each o |
| 4146083 |
Arcuate supporting and guiding construction for continuously cast strands |
March 27, 1979 |
| An arcuate supporting and guiding construction for continuously cast strands, in particular slabs, has a framework comprised of at least two framework parts, sets of inner and outer arcuate longitudinal carriers positioned within the framework and accommodating rollers to form roller |
| 4145197 |
Impeller for separating dust particles from an air stream |
March 20, 1979 |
| A device for separating dust particles from an air stream, in particular for mine ventilation, comprising a centrifugal separator, a blower for conveying the air stream through the centrifugal separator, and a device connected in advance of the centrifugal separator in the air flow d |
| 4144442 |
Process for producing a component part of a railway switch or a railway crossing and component p |
March 13, 1979 |
| Process for producing a component part of a railway switch or of a railway crossing in which frogs consisting of austenitic manganese steel casting are, with interposition of an intermediate piece, connected by a welding operation with rails consisting of carbon steel, characterized in t |
| 4143864 |
Hood arranged on a blowing stand comprising a tiltable converter |
March 13, 1979 |
| A hood arranged at a blowing stand of a steel making plant for diverting the smoke and flue gases emerging during charging of a converter, totally covers the converter mouth at a vertical distance thereabove so as to leave room for the charging container, and includes closeable recesses, |
| 4138166 |
Slide-articulation bearing, in particular for tiltable converters |
February 6, 1979 |
| A slide-articulation bearing, in particular for tiltable converters, with an inner race placed on a shaft, an outer race inserted in a bearing housing, and sliding elements inserted between the inner and outer races so as to permit a relative movement of these races, has the sliding |
| 4137963 |
Strand guiding roller to be used in a continuous casting plant |
February 6, 1979 |
| A continuous casting plant strand guiding roller has a stationary axle and at least three roller bodies journaled thereon, each provided with an annular recess to accommodate bearings. The stationary axle is provided with longitudinal channels, and radial channels originate from the |
| 4137616 |
Method of producing a clad shaped body |
February 6, 1979 |
| A method of producing a clad shaped body by roll-bond cladding of a sandwich-like cladding package closed on all sides, which is evacuated before being heated to rolling temperature employs a metallic intermediate layer comprised of a pure iron sheet provided between the base material |
| 4132452 |
Slide-articulation bearing, in particular for tiltable converters |
January 2, 1979 |
| A slide-articulation bearing for supporting a shaft, in particular for tiltable converters, has a circular-cylindrical sliding face forming a unit with the shaft, sliding elements held by a cage contacting the sliding face, and an outer race with a spherical inner face for accommodat |
| 4129288 |
Hood to be used in a metal production plant |
December 12, 1978 |
| A hood for diverting the flue gases and smoke when pouring molten metal from a tiltable metallurgical vessel into a ladle hanging from a crane, has an opening through which the vessel lip projects into the hood interior, at least one recess through which the ladle carrying means can |
| 4129174 |
Arrangement for adjusting and securing a bottomless mould |
December 12, 1978 |
| An arrangement for adjusting and securing a bottomless mould to a mould lifting table in a continuous casting plant for strands with supporting and guiding paths arranged to follow the mould to support the strand at opposite sides thereof, has centering apparatus on the mould lifting tab |
| 4129173 |
Continuous casting plant |
December 12, 1978 |
| A continuous casting plant has a frame-shaped lifting table, a mould insertable in the lifting table, and a strand guide device following the mould and including strand guide parts. The strand guide part following the mould is surrounded by a carrying frame, and this strand guide part |
| 4128233 |
Converter-bottom-fastening mechanism |
December 5, 1978 |
| A converter bottom-fastening mechanism to be used in a converter construction with a removable converter bottom, a converter jacket and a supporting construction connected to the converter jacket. The bottom-fastening mechanism includes a plurality of rocker-like clamping levers peri |
| 4122888 |
Method of guiding a cast strand and arrangement for carrying out the method |
October 31, 1978 |
| A method of and arrangement for guiding a cast strand that is extracted from the mould has pairs of driving rollers and pairs of supporting rollers arranged alternatingly along the portion where the strand is horizontally guided. Form locking connections are provided for the supporti |
| 4121742 |
Ladle-rotating turret arrangement |
October 24, 1978 |
| A ladle-rotating turret arrangement to be used in a continuous casting plant has a concrete base block with a hole through it, a central column inserted in the hole with play, carrier arms provided on the column, and two annular discs arranged at the hole at a distance from each other. A |
| 4121652 |
Apparatus for separating a starter bar having a starter bar head from a hot strand crop-end in a |
October 24, 1978 |
| An apparatus for separating a starter bar from a hot strand crop-end in a continuous casting plant (which plant includes a lifting mechanism for lifting the starter bar and its tong-shaped starter bar head, a stationary vertical guide, and an opening mechanism for the two lockable nipper |
| 4121481 |
Device at a converter with a tilting drive |
October 24, 1978 |
| A device at a converter with a tilting drive, a tilting trunnion on which the tilting drive is suspended, and a torque support resiliently supported on the base, also has an adjustment means, by which the tilting drive can be fixed relative to the base during blowing. |
| 4120406 |
Apparatus for forming a stack composed of layers of round-section elongated items |
October 17, 1978 |
| Rods or tubes are arranged in a first plurality of layers in which their number increases by one from layer to layer, and in a succeeding plurality of layers wherein they similarly decrease in number. A stack support can be lowered from an uppermost elevation in increments equal to the l |
| 4116261 |
Continuous casting plant strand guiding means |
September 26, 1978 |
| A continuous casting plant strand guiding means with rollers whose axes are mounted in roller carriers by means of eccentric bushings. Upon turning the eccentric bushings the distance between oppositely arranged rollers can be changed. |
| 4114679 |
Arrangement for introducing a flexible starter bar into a continuous casting plant |
September 19, 1978 |
| An arrangement for introducing a flexible starter bar, having a starter bar head, into a continuous casting plant with a mould and a strand guide located below the mould, has a lifting device for gripping and lifting the starter bar, and a displacement device designed as a car, arranged |
| 4113003 |
Starter bar head arrangement |
September 12, 1978 |
| A starter bar head arrangement to be used in continuous casting plants has at least one strand anchoring piece connecting the starter bar head with the crop end of the strand by casting-on inserted in a recess of the starter bar head so that it protrudes therefrom and fixed by a transver |
| 4111488 |
Method for cutting minerals and cutting machine |
September 5, 1978 |
| In a method and apparatus for cutting minerals utilizing a cutting tool provided with cutting teeth, the tool rotates about an axis approximately parallel to the winning face and is moved at a feeding rate essentially in axial direction. Several grooves spaced from each other are carved |
| 4111227 |
Pressure relief valve for hydraulic mine supporting elements |
September 5, 1978 |
| A pressure relief valve for hydraulic mine supporting elements, particularly mine props, has a valve member loaded in its closing direction by a spring, a piston is connected to the valve member end sealingly sliding within a cylinder of the valve housing and arranged to be acted upo |
| 4109700 |
Arrangement for introducing a flexible starter bar into a continuous casting plant |
August 29, 1978 |
| An arrangement for introducing a flexible starter bar with a starter bar head from above into a continuous casting plant including a mould, a strand guide and an introduction part and has a lifting mechanism for the starter bar, a transporting car. The transporting car contains a sliding |
