Abstract: An apparatus is provided for regulating the percentage quantities of individual gases present in the combustion air supplied for reaction processes in metallurgy. A molecular sieve absorption material is used on the intake air to absorb the inert constituents to thereby enhance the quantity of oxygen present. The apparatus utilizes several molecular sieve materials in a continuous manner such that one of the devices containing the molecular sieve material is being purged for regeneration while another device is absorbing the inert constituents, while yet another device is cooling, i.e., getting ready for the absorption operation. The countercurrent flow of heated intake air, which air is derived from the metallurgical reaction process, is used in the apparatus for regenerating the molecular sieve material.

Abstract: The invention refers to a brick lining apparatus for metallurgical vessels, particularly for steel mill converters and/or blast furnaces, with an annular working platform which is automatically adjustable in height, and with a coordinated brick conveyor line consisting of one or several chains leading around sprocket wheel pairs with attached brick supports, whereby working platform and brick conveyor line are retractable to approximately the distance between mill floor and vessel opening.

Abstract: The invention relates to the mounting of a driven wheel having a shaft on antifriction bearings, and spring rings retaining the latter, in bushings of a crane.

Abstract: A mobile bulk goods delivery system is provided for spacing and evening out the delivery of quantities of bulk goods received so that subsequent operations in a production line are not jammed with intermittent overload quantities of bulk goods to be processed. The delivery system of the disclosure is an equalizer mounted on a mobile support for pivoting around a horizontal axis. The equalizer includes a delivery belt system which has positioned on one end thereof a bulk goods receiving container pivotally mounted, again on a horizontal axis. The equalizer is capable of being moved from one location to another, as desired. The configuration of the container with respect to the support is such that the container, when in its operative position, is recessed below ground level, and when being moved from one location to another, is maintained above ground level.

Abstract: Methods and apparatus are provided for regulating the percentage quantities of individual gases present in the combustion air supplied for reaction processes in metallurgy. This is achieved by utilizing molecular sieve absorption processes upon the intake air in a sequential manner to remove undesirable gases attendant with the intake air and to enhance and regulate the quantity of oxygen present. The arrangement may be operated in a continuous manner through the utilization of several molecular sieve devices wherein one of such devices may be purged for regeneration and later use by countercurrent flow of heated intake air which air has been heated by the heat derived from the metallurgical reaction process in the first place.

Abstract: A turbulent waterway, having boats guided in a trough made from bargrating, individual plates of which are connected with each other, the side of the trough being covered with a dense synthetic plastic film.

Abstract: The invention refers to a transport exchange truck for changing and alternating metallurgic vessels, particularly for steel mill converters. The truck is provided with an interior frame part arranged to rotate in the center of the exterior carriage frame with at least one piston--supportable on the mill floor--of a piston-cylinder unit to raise the exterior frame part carrying the undercarriages. The exterior frame part supports a lift table which can be raised or lowered by means of one or several piston-cylinder units. Each piston rod is connected with the lift table through at least one ball-and-socket joint whose joint housing is provided with articulated traction elements.

Abstract: A plural nozzle arrangement is provided for introducing reactants, additives and so forth to steel manufacturing furnaces, in which a unitary "plug-in" type structure is provided with a plurality of self-contained blast pipes. The arrangement of the invention also provides means for introducing separately additives, reactants or shielding gases around the periphery of the blast pipes as a secondary means of introduction while still contained on the unitary structure. The unitary structure of the invention is so configured that exposure of the periphery of the individual blast pipes to the secondary additives may be varied for different applications.

Abstract: A means for quickly placing a roller set onto a supporting shaft is disclosed. Generally, a guide sleeve is mounted at one end of the shaft and formed whereby the upper surfaces of the sleeve provide an aligned continuation of the upper surface of the supporting shaft. The remaining portions of the sleeve surface taper inwardly away from the imaginary continuation of the shaft surface. Thus, the sleeve has a diameter somewhat less than the outer diameter of the supporting shaft and accordingly, less than the inner diameter of the roller set. This arrangement facilitates a slipping of the roller set onto the guide sleeve without a need for precisely aligning the roller set with respect to the guide sleeve. The configuration of the upper surfaces of the sleeve insures the proper alignment of the roller set with the supporting shaft. Once the roller set is placed onto the guide sleeve, it may then be easily slipped from the sleeve and onto the shaft.

Abstract: A transfer and storage mechanism is provided for disposable tube probes used in metallurgy. The transfer mechanism is arranged to select from several vertical stacks of such probes and to transfer the selected probe to a lance for insertion into a converter. The same mechanism provides several functions in that it holds the selected probe tube, pivots it into position for engagement with the lance and centers the probe for engagement for the lance. Moreover, arrangements are provided for engaging and sliding the selected tube out of the storage area into the transfer mechanism.

Abstract: A multi-unit hoist apparatus is provided having an overload arrangement in the form of reversible pressure medium cylinders connected to the fixed end of each hoist unit in the apparatus. Appropriate controls are incorporated into the pressure medium supply to each unit, whereby if the load becomes unbalanced the unit subjected to an overload is relieved when the overload reaches a specific preset level.

Abstract: The invention covers a supporting roller stand for steel slab strand casting plants, particularly for curved slab strand casting plants with supporting rollers of differential lengths being arranged opposite, in pairs, along the broad sides of the strand profile, subdivided on at least one side over the width of the strand, such supporting rollers being furthermore arranged in groups of differential diameters.

Abstract: A shift control arrangement is provided for rail vehicles to bring about the simultaneous shifting of all directional guide wheels on the vehicle at the same time, including those in both the front and rear undercarriages of the vehicle. This is achieved by interconnecting the shift linkages of each undercarriage and, preferably, by placing the connection in the longitudinal axis of the vehicle.

Abstract: A mounting structure is provided for mounting one or more live rails in a bank of such rails, the mounting structure providing simple means for including additional rails in the bank. The structure comprises a plurality of identical mounting halves, two of which cooperate to mount a single rail. When mounting a rail, the two cooperating halves present cooperating exposed surfaces for the joining of additional mounting halves and rails on each side thereof. Each mounting half includes identical cooperating recesses and projections which when joined together hold a rail in a mounted position. Each half also includes a gripping claw for grasping a single bracing panel or plank for holding an entire bank of mounted rails together.

Abstract: A switchboard booth structure having a unique arrangement of exteriorly accessible service and control devices and interiorly accessible switch devices for controlling low voltage elements of electrical apparatus, particularly metallurgic electric furnaces is disclosed herein.

Abstract: The invention deals with an intermediary tank truck for metal plants, particularly steel strand casting plants, whose frame consists of two beams and two crossbeams, with the intermediaary or transfer tank resting on the frame, and equipped with a hoisting device between the frame and the intermediary tank, a horizontal adjustment device, a tilting device, and a measuring scale.

Abstract: A railway maintenance car is provided for elevated railways which uses the rails, or rail of a monorail system, to move to the place of maintenance, thus avoiding obstruction of ground areas beneath the railway. The car of the invention includes telescoping cantilevered maintenance access platforms movable laterally and longitudinally of the car to place maintenance personnel alongside stalled cars on the rail or rails, and to move such personnel under the rail itself for maintenance and repair. The telescoping features of the invention include independently operable devices at each end of a telescoping platform in order to extend such platforms at an angle to the axis of the car for accommodating curved rail access.

Abstract: An emergency brake mechanism is provided, particularly for small railway cars such as those used for monorail systems, for braking a car released by failure of the motor and main braking system. The brake mechanism includes a brake shoe with tapered surfaces extending in opposite directions longitudinally of the path of movement of the car for wedging a brake pad between the shoe and the rail surface. The brake pad is pushed into engagement by a movable tappet, which in turn is released to move toward the rail surface by a centrifugal governor monitoring the speed of the car. The brake housing mounts the brake shoe on one side of the rail with a counter-brake surface on the opposite side.

Abstract: A method is provided for producing steel with a very low carbon content of as low as 0.015% by continuously maintaining a foaming slag layer at a particular volume, and using as the charge a pre-reduced sponge with a specified carbon/oxygen ratio. The process includes utilizing a slag with a specific content of iron and magnesium oxide.

Abstract: The invention covers a passenger slide with bearings or ties installed at a slope, with length-adjustable interlocking supports resting on the bearings for the slide segments which fit on the tubular carriers arranged at the upper end of the length-adjustable supports.