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.

Abstract: There is disclosed a plasma melting furnace through the side wall of whose cylindrical furnace body a plurality of downwardly directed plasma burners are guided, whose mouths project into the furnace interior. In order to avoid several rechargings, which has been common so far, in particular with scrap of low apparent density, and to be able to charge continuously, without endangering the plasma burners by electric flashovers between parts of the charge material and the burner mouths or falling-down materials and by maintaining the inert gas atmosphere within the furnace, the cover of the furnace interior comprises a shoulder-likely re-entering part projecting upwardly. This part is closeable by a lid and delimits a central charging opening whose diameter is smaller than the diameter of the circle on which the mouths of the plasma burners are arranged.

Abstract: An arrangement for exchanging measuring and/or sampling probes capable of beig slipped on to a holding means arranged on the lower end of a lance, includes a grab clamping the probe and movable from an operation position below the lance into a position laterally therebeside. A centering means is provided above the grab being in the operation position to align the lance with the grab. In order that the grab will be placed always in the same operation position, the centering means includes two catch arms moveable from a resting position lateral of the holding means into a catch position fixing the holding means in alignment above the grab being in the working position.

Abstract: A continuous casting plant includes supporting elements following a through-type mould and including the strand guideways. The elements are arranged within a cooling chamber and are fastened to a supporting structure so as to be adjustable relative to the through-type mould and relative to one another in the direction transversely to the longitudinal axis of the strand guideways. In order to be able to carry out an aligned adjustment between the mould and the supporting elements in a simple manner, with little work to carry out and even with the plant in operation, wherein the entry of the cooling chamber is avoided, at least one of the supporting elements is coupled with an adjustment means. This adjustment means is fastened to a supporting structure, directed outwardly from the cooling chamber and actuatable from outside of the cooling chamber.

Abstract: A bit holder equipped with a spraying device, comprising a receiving bore (2) in which the bit shaft (3) is supported, for limited axial shifting movement and optionally for being rotated, shifting movement of the bit shaft (3) in direction of the cutting pressure being limited by abutment (5) and the bit shaft being loaded by a return force in opposite direction to the cutting pressure and a valve (10, 11) for the supply of water to the bit or to the working or drift face during cutting operation being arranged within the bit holder (1) and being opened under the action of the cutting pressure by the axial shifting movement of the bit shaft (3). The valve housing (9) is inserted into the receiving bore (2). The rear end of the bit shaft (3) acts directly on the shaft (12) of the valve cone (10).

Abstract: The dust separator comprises a rotating centrifugal separator (10) having within a stationary housing paddle wheels (5) equipped with radially extending paddles (12) approximately located in axial planes. With these paddles (12) there are co-rotating walls (9) extending in circumferential direction and adjoining the paddles (12). Blowers (6,7 and 8) force the dust-loaden air through the centrifugal separator and spraying or atomizing means (1) are provided which are arranged as seen in flow direction upstream of the centrifugal separator. The walls (9) extending in circumferential direction have a diameter step-wisely decreasing in flow direction, noting that at the base of each stage there is provided at least one slotted passage (15) extending in circumferential direction.

Abstract: A continuous casting mould comprises a first mould part moulding the strand cross section and at least one second mould part arranged after the first part in the strand travelling direction. The second mould part is equipped with wall parts supporting the strand surface and getting into contact therewith. The wall parts are pressable against the strand surface by adjusting means. In order to provide a continuous casting mould which peripherally requires only little space, in which the adjustment force does not depend on the wear of the wall parts, and in which completely uniform adjustment forces and thus always the same wear occur over the length of the wall parts, the adjusting means are arranged so as to be parallel to the longitudinal axis of the strand with their longitudinal axes.

Abstract: In a press comprising upper and lower turntables for carrying respective sets of upper and lower press tools, each upper press tool is movable to an operating position in which said press tool is adapted to be coupled to a ram. To ensure a free access of the workpiece to the press tools adjacent to the lower press tools, each lower press tool is mounted in the lower turntable to be individually vertically displaceable relative thereto. Only the lower press tool which is in operating position is supported in the frame and the other lower press tools are lowered.

Abstract: A sieve drum (2) for drying solid materials such as, for example, brown coal is rotatably supported for being rotated around its axis (8). A conveying screw (3) is arranged within the interior of the sieve drum and can be rotated independent from the rotation of the sieve drum (2). The sieve drum (2) is designed as a slot-sieve drum, the slots (26) of which extend within the mantle of the drum from one front end (7) of the drum to its other front end (5). The sieve drum (2) and the conveying screw (3) are arranged within a tightly closable pressure resistant housing (1), steam supply openings (22) being connected to the housing (1) outside of the sieve drum.

Abstract: A vessel includes an outer wall and an inner wall arranged at a distance therefrom within the vessel and leaving an annular space relative to the outer wall. The inner wall is supported on the outer wall so as to allow for relative movements. In order to provide a vessel with which the danger of oscillations of the inner wall is avoided, with which a simple supply of medium is possible, which is easy to clean and with which the danger of an implosion of the inner wall is reduced, the inner wall is comprised of individual annular sections subsequently arranged in an axial direction of the vessel. Each section is supported on the outer wall independently of the other sections. An expansion joint is provided between two neighboring annular sections each.

Abstract: For cooling the bits (1) of a cutting machine, nozzles (22) for cooling water are provided. The bit (1) is supported for axial shifting movement and can when being loaded exert a stroke for the path (a) in direction of the arrow (4). A coupling member (9) transmits the movement of the bit (1) to a shutoff valve (7) blocking the supply of water in unloaded condition of the bit and giving free the supply of water whenever a predetermined cutting pressure is exceeded. The restoring force of the bit (1) to return the same in its starting position in unloaded condition is provided by a spring (5) and by the water pressure and is rated in correspondence with the minimum value of the cutting pressure. The restoring spring (5) is supported against an adjustable abutment (30, 31) which can be fixed in position during operation so that the restoring force can be adjusted.

Abstract: There is disclosed an arrangement for exchanging measuring and/or sampling probes capable of being slipped on to a holding means arranged on the lower end of a vertically movable lance with friction-tight contact. It includes a grab clamping the probe and movable from an operation position below the lance into a position laterally therebeside. In order to be able to slip on a probe to a holding means assuming a position that deviates from the ideal position, without damage to the holding means and the probes, the grab is mounted on the arrangement by universal joint means.

Abstract: The filter press for dewatering of materials such as, for example, sewage sludges has two sieve belts or filter belts (18, 19) being passed, with inclusion therebetween of the material to be dewatered, in common over dewatering drums (2, 3, 4, 5, 6). Behind the dumping location for the dewatered cake, the sieve belts or filter belts (18, 19) are separately returned again and tensioning rolls for adjusting the belt tension of the sieve belts or filter belts (18, 19) are provided at this area. The tensioning rolls (27, 32) are adjusted by a common actuating member (34) acting on the axes of the tension rolls (27, 32), so that an uniform belt tension is obtained for both sieve belts or filter belts. (FIG.

Abstract: There is disclosed a method and arrangement for inspecting the surface of steel stock having a temperature above the Curie point. In order to detect, with a great certainty and accuracy, defects in the hot steel stock, with a loss of energy for cooling the steel stock for inspection and subsequently reheating it for further processing being avoided, only a thin surface layer of the steel stock is intensively cooled on the surface to be inspected, to a temperature below the Curie point. The core of the steel remains hot. Immediately thereafter, a magnetic or electromagnetic field is induced in the cooled surface layer and disturbances in the induced field caused by defects in the steel stock are detected and recorded by pick-ups.

Abstract: With a method for producing metals, the raw material is melted in a metallurgical vessel by at least one plasma burner directed from top to bottom. In order to be able to protect the furnace brickwork from too strong a thermal load exerted by the plasma jet, and to make available the energy supplied by the plasma burner to melting and reducing the fine ore to as large an extent as possible as well as to prevent an agglomeration of the raw material to be used, the raw material is topcharged into the metallurgical vessel in the form of fine particles directed parallel to the plasma jet so as to peripherally surround the same. Oxygen-containing gases and carbon are bottom-blown into the vessel through the melt. A foamed slag is formed in the vessel, surrounding the plasma jet over its total height and the flow of supplied raw material particles peripherally.

Abstract: An improved take-off device for a horizontal continuous-casting installation is provided. The arrangement comprises a frame and a mounting seated on rollers in the frame. The mounting is rotatable relative to the frame and supports the drive roll and its drive shaft, and a counter-pressure roll, which rolls preferably have counter-profiles corresponding to the cross section of the casting. The mounting comprises two concentrically arranged tubes which are sealed at their ends, thereby defining a cooling area therein. The adverse effects of gravity on casting quality may be mitigated by rotating the mounting relative to the frame, and locking it as a desired relative position, depending upon the cross-sectional configuration of the casting.

Abstract: A lifting platform is hinged via oscillating cranks forming a four rod linkage mechanism to a spacially fixed support frame at a continuous casting apparatus with a mold having a curved metal bar axis and disposed at the oscillating lifting platform and the lifting platform forms the connecting rod of this four rod linkage mechanism. In order to avoid the generation of cracks in the metal bar at the transition from the oscillating guide track for the metal bar to the spacially fixed guiding of the bar and in order to be able to adapt the oscillating cranks to close quarters, the longitudinal axes of the oscillating cranks intersect at a point while the mold is in middle position, which point is disposed on a straight line connecting the center of curvature of the guide track of the metal bar to the lower end of the oscillating support surface supporting the metal bar. The oscillating cranks are of differing lengths.