Abstract: For supplying a pressurized cooling liquid to the outlet openings in a cutting head, there is provided an axial supply bore (3) opening into a distributing chamber. Radial passages (11) are provided which open into the distributing chamber and lead to the outlet openings at the periphery of the rotating cutting head. The distributing chamber is designed as a space coaxially surrounding the axial bore (3), being closed at its front side and having its mantle stationary arranged. At least two radial bores (9, 10) of opposite radial direction adjoin this annular space and are displaced in axial direction of the bore (3). The cutting head is sealingly guided on the non-rotating mantle of the annular space.

Abstract: An arrangement for measuring the gap between two rolls or rollers includes a measuring body on which at least three support rollers that get into contact with a surface of one of the rolls or rollers are provided on one side to adjust the measuring body between the rolls or rollers. Two of the support rollers are located on either side of the gap to be measured, symmetrical with respect to the gap plane. At least two support rollers that get into contact with the surface of the second roll or roller, contacting the surface of the second roll or roller in contact points located symmetrical to the gap plane, are provided on the opposite side of the measuring body. At least two support rollers for the one roll or roller, that are arranged symmetrical to the gap plane, are synchronously movable towards the surface of the roll or roller and are pressable at the same.

Abstract: An apparatus for feeding and rotating a sheet metal element comprises a frame and a carriage displaceably mounted on the frame for feeding the sheet metal element. The sheet metal element is selectively gripped in a predetermined plane by a non-rotatable gripping jaw mounted on the carriage, a rotary backing jaw rotatable about an axis extending perpendicularly to the plane, and a rotary gripping jaw carried by the frame independently of the carriage and rotatable about the axis, the non-rotatable gripping jaw and the rotary gripping jaw being adapted selectively to cooperate with the rotary backing jaw to grip the sheet metal element therebetween. The backing jaw is alternately and selectively forced against the non-rotatable or the rotary gripping jaw to grip the sheet metal element therebetween, and a rotary drive is mounted on the frame independently of the carriage and is operable to rotate the rotary gripping jaw when the sheet metal element is gripped between the rotary gripping and backing jaws.

Abstract: A coiler comprises a rotatably mounted coiler shaft, adapted to be driven, and a hollow reel, non-rotatably connected to the coiler shaft and containing a mechanism for expanding the coil. The expanding mechanism is adapted to be actuated by an actuator and comprises radially adjustable pressure-applying members, adapted to protrude through apertures in the reel at its periphery. To ensure that the coiler will be operable even under high loads, the pressure-applying members are spaced along the reel and mounted on two diamatically expanding opposite members, operatively connected to the actuating mechanism. The expanding members are pivoted on diametrically opposite axes which extend parallel to the axis of the coiler shaft.

Abstract: To recover the sensible heat of slag the slag is allowed to solidify on the surface of a hollow cooling body provided with a liquid internal cooling and is indirectly cooled by the liquid internal cooling. The liquid cooling medium of the liquid internal cooling is guided in a thermodynamic cyclic process. In order to ensure as completely a recovery of the sensible heat of the slag as possible and a high percentage of glassy portions of the slag as well as a good grindability of the slag, the liquid slag on the surface of the cooling body is intensively cooled indirectly by the liquid cooling medium to a temperature of closely below the solidification temperature in a first cooling step. The solidified slag separated from the surface of the cooling body is then directly cooled by a gas flow in a second cooling step. The heated gas flow also is guided in a thermodynamic cyclic process.

Abstract: Two juxtaposed cross slides provided with toolholders are slidably mounted on the saddle of a lathe. To permit an unrestricted use of lathe tools as well as of boring, drilling and milling tools, each cross slide is movable independently of the other. One of the two cross slides carries a turret on the side which is remote from the other cross slide. Said other cross slide carries a tool head, which comprises a tool spindle, which is adapted to be rotationally driven. That tool head is mounted for angular adjustment on an axis which is at right angles to the tool spindle, to the main axis of the lathe, and to the guide for said other cross slide.

Abstract: For the supply of water to nozzles on the circumference of a cutting head there are, within a cutting head (1) composed of individual discs (2), provided bores (14 respectively 16) extending in direction to the axis of rotation of the cutting head (1). The individual annular discs (2) are connected one with the other by welding, the weld beads extending over a radial area (a) of the cutting head which is greater than the diameter (b) of the bores (14 respectively 16). The bores (14 respectively 16) extend through the weld beads (19) (FIG. 2).

Abstract: The cutting head (1) has passages (14, 16; 22) extending through the cutting head in axial direction thereof and being connected with the axial water supply bore (8) by radial bores (9). Radial bores leading to the outlet nozzles open into the passages (14, 16; 22) extending through the cutting head in axial direction thereof. The passages (14, 16; 22) extending through the cutting head in axial direction thereof can be closed at at least one side by means of detachable closure members (15), so that these passages (14, 16; 22) extending through the cutting head in axial direction thereof can, after having removed the closure members, be cleaned by means of a cleaning-rod.

Abstract: For removing sulfur during melting of pig iron in a fluidized coal layer, it is proposed to introduce into the fluidized coal layer lumpy and/or grainy desulfurating agent. The desulfurating agent can additionally be introduced into the slag, noting that the desulfurating agent is preferably charged above or laterally of the fluidized coal layer within a range of grain sizes of 0.5 to 5 mm for the fluidized coal layer and within a range of grain sizes of 5 to 50 mm for the slag layer. The proportion of lumpy desulfurating agent selected should preferably be smaller than 50% by weight of the total amount of desulfurating agent.

Abstract: In a flushing arrangement for a metallurgical vessel, a metallic flushing plate is installed on pre-determined sites of the bottom or the vessel walls between neighboring refractory bricks. The flushing plate has two plate-shaped metal walls delimiting at least one passage channel for flush gas, and a supply duct, in flow connection with the passage channel.

Abstract: Additional intermediate narrow side walls are provided between narrow side walls at an apparatus for continuous casting of metals for casting as desired of metal bars with slab boom cross-section or of at least two metal bars of smaller cross-section, where a plate mold is employed, which is provided with a water tank supporting the narrow side walls and the wide side walls. In order to use best the cross-sectional area available for the forming of a slab bloom and in order to maintain acceptable and favorable viewing conditions immediately below the mold, the copper plates of the wide side walls between the end side narrow side walls are in each case subdivided by at least one recess in the longitudinal direction of the advancing metal bar in order to be able to cast at least two bars concurrently.

Abstract: In a method of producing metals or metal alloys by reducing their halides in a hydrogen plasma, a plasma jet reaction zone is built up from the vaporized metal halides contained in the plasma gas together with hydrogen, and the molten metal formed jets from the plasma jet reaction zone into a mould arranged therebelow. An arrangement for carrying out this method includes a reaction vessel whose upper part has a reaction space for the metal halide to be reduced and hydrogen-containing plasma gas, and a plasma lance arranged centrally in the reaction vessel, the metal formed getting into the lower part of the reaction vessel forming a metal sump therein.

Abstract: There is disclosed an installation with a refractorily lined metallurgical vessel. The vessel, on its upper end, is provided with a mouth that is connectable to a chimney arranged at a distance above the mouth, by a hood insertable between the mouth and the chimney. In order to provide an installation with which the lining team is not jeopardized and by which it is possible to introduce the lining material into the metallurgical vessel in a simple and time-saving manner, a container is introduceable into the space present between the mouth and the chimney after the removal of the hood. The container covers the chimney downwardly and includes at least one closeable bottom opening. The carrying means for introducing the container is equipped with at least one hoist displaceable from laterally beside the mouth of the vessel to above the mouth of the vessel.

Abstract: A magazine for measuring and/or sampling probes includes storage compartments accommodating the probes in a horizontal position, and supply and delivery openings provided parallel to the probes. A conveying means is arranged at the delivery openings to deliver the probes to an erecting means placing the probes in a vertical position. In order to ensure an optimum utilization of space with little space being required beside the magazine, the magazine comprises a plurality of superposed storage compartments provided with a roll bevel for the probes. Their vertically superposed delivery openings are passed by a lift for accommodating one probe each from one of the storage compartments. The lift is movable to the erecting means from a delivery opening each.

Abstract: In an apparatus for dewatering water-containing materials, endless sieve belts (1,2) are passed over rolls (8) bearingly supported within substantially mutually parallel frames (7, 11) one of which is movable in direction to the other and is additionally shiftable in a substantially parallel relation to the other and thus transversely to the direction of said adjusting movement and can be fixed in its position. For facilitating the coordination of said adjusting movement and said shifting movement, a gate-type guide (10) forming abutments is connected with one frame (7) and has its gate (12) shaped like a U having legs (13, 14) of different length, retaining bolts or, respectively, pins (26) of the other frame (11) engaging said gate (12).

Abstract: For cutting rock by means of cutting head (1) having its bits (24) cooperating over a limited axial shifting stroke (a) with a cylinder-piston-aggregate, for example a valve (18), it is proposed to intermittently subject the cylinder-piston-aggregate to the action of pressurized fluid, thus exposing the bit (24) during its engaging the rock to percussion forces. During the phases lacking any action of pressurized fluid onto the cylinder-piston-aggregate, the bit (24) shall be pushed into its starting position. This embodiment can be realized with both hydraulic and pneumatic cylinder-piston-aggregates, noting that in case of an embodiment having a hydraulic cylinder-piston-aggregate it is preferred to design this cylinder-piston-aggregate as a valve (18) which simultaneously provides the possibility to expel pressurized liquid via a spraying nozzle (32) onto the mine face. (FIG.

Abstract: A plant for hot-rolling strip or plate stock comprises roller conveyors for conveying the stock to be rolled, which is guided on the roller conveyors by side guards, which are provided on the roller conveyors near their side edges and adjustable transversely to the direction of travel on the roller conveyors. To ensure that on such roller conveyor provided with the side guards the cooling of the stock to be rolled will be minimized, the roller conveyors are provided with coverings, which are supported by the side guards and movable in unison with at least one of the side guards.

Abstract: The loading ramp (1) of a heading machine or longwall shearing machine has swivelable loading arms by means of which the cut material is removed onto a conveying means. The surface of the loading ramp (1) can be increased by outwardly swivelling of parts (2). The loading arms (5) are driven by using a pivotal point (6) on a rotary disc (7), noting that a further swivel point (12) is provided outwardly of the circle described by a rotary pivotal point (6) on the rotary disc. The loading arm (5) is guided in a shiftable manner at the swivel point (12) and sweeps when driving the rotary disc (7) over a removal area (15, 18) defined by the relative position of the pivotal point (6) and the swivel point (12). The swivel point (12) is connected with the laterally extendable part (2) and is displaced together with the laterally extendable part (2) thus varying the removal area (15, 18).

Abstract: A rotary kiln is charged with pneumatic tires by a lock chamber which carries two gates adapted to be opened in alternation. To ensure a desirable charging operation, the lock chamber provides a runway downwardly inclined towards the kiln inlet and having a length which is at least twice the tire diameter. The gate at the receiving end of the lock chamber is provided with a tire holder for holding each tire in a position for rolling on the runway. The tire holder comprises a gripping device having two gripping jaws operable to move in mutually opposite directions and engageable with the side wall of a pneumatic tire. The gripping jaws are mounted to be adjustable in a direction parallel to the runway and transversely to the direction of travel of the tire on the runway.

Abstract: A checking and aligning stand for measuring and aligning structure sections of the strand guide of a continuous casting plant includes measuring surfaces to determine the mounting position of the structure section. In order to be able to effect a quick check of the mounting position of curved structure sections of a bow-type continuous casting plant without impeding the casting operation during this adjustment work, at least two pairs of measuring surfaces arranged at an angle to each other, preferably at 90.degree., to determine the roller-way coordinates relative to the position-defining supporting surfaces of the structure section are provided on the checking stand.