Abstract: A method of slagging off slag, especially treatment slag, from metal baths, particularly iron baths, in vessels such as crucibles and ladles, by means of a rabble while the vessel is slightly tilted. To this end, a slag-free zone starting at the lifted side of the vessel is created by means of a rinsing gas acting on the bath surface on the lifted side of the vessel so that the slag which originally covered the slag-free zone is partially displaced toward the vessel side opposite the slag-free bath surface. The rabble is then lowered onto the slag-free portion of the metal bath and while engaging the slag from behind, the rabble is pushed so as to force the slag over the vessel rim section opposite the slag-free bath surface.

Abstract: An off-shore drilling platform structure and method of mounting in which the structure comprises a base with spaced upstanding legs thereon and a floatable platform slidable along the legs. Laminated tension elements have the opposite ends connected to the base and the upper ends of the legs and the platform has clamp devices for clampingly engaging the laminated tension elements. One clamp device pertaining to each element is nonmovable in the direction of the legs on the platform while the other is movable on the platform in the direction of the length of the legs by power operated devices. The clamp devices pertaining to each tension element are selectively operable so the platform can be moved along the legs.

Abstract: A chucking device for a machine tool, especially a turning machine, in which a chuck body has radial recesses in which jaws are slidable while the actuating bars in the chuck body engage teeth on the jaws to move the jaws in and out as the bars reciprocate. A gear coaxial with the chuck body is tangential to the bars and meshes with teeth thereon, while a rotary motor in the chuck body is adjacent to and is directly connected with said gear.

Abstract: A fuel injection valve having nozzle bores which are inclined with respect to the axis of the valve. The nozzle bores are similar to Laval nozzles. An auxiliary bore is provided in the axial extension of the nozzle bore to be prepared in the nozzle body for machining the nozzle bore. This bore is sealed by means of a pressed in, soldered, or electron beam welded stopper.

Abstract: A tractor-implement arrangement for establishing a frictional connection between the power take-off shaft of a tractor and a Cardan shaft for the drive of a movable implement by an automatic coupling of members respectivaly connected to the power take-off shaft and the Cardan shaft. The implement is connected to the tractor by means of automatically interengaging coupling members or elements while one and/or the other coupling element of the power take-off or Cardan shaft is axially displaceable while being spring urged. The Cardan shaft is supported by suitable holding means and is liftable by a lifting device. The Cardan shaft is moved first by guiding the same along an inclined plane toward the take-off shaft and is frictionally coupled thereto whereupon the implement is mounted on the tractor by interengagement of additional coupling members.

Abstract: An upholstered body, especially mattress, with a spring core which is provided with at least one cover plate of elastic foam material, and has on at least two opposite sides thereof inwardly of the plate respectively arranged a marginal body member of elastic foam material. In the transition area between the cover plate or cover plates and the marginal body members on at least two oppositely located sides of the upholstered body, there are provided bend-elastic bar-shaped stiffening bodies which consist substantially of compacted synthetic foam material, preferably of the same type the marginal body members are made of and preferably integral therewith. These stiffening members are located at the inside of the adjacent cover plate. Interposed between the at least one cover plate and the adjacent ends of the springs is an intermediate layer having its marginal areas connected to the stiffening bodies.

Abstract: An arrangement for improving transloading pourable materials by means of a grab bucket, according to which a hood is carried by a crane member on which a grab bucket is suspended by hoisting means. The arrangement is such that the grab bucket can be pulled selectively from below into the hood which is so dimensioned as to allow the grab bucket substantially fully to open within the hood. The lower rim of the hood which surrounds the inlet opening for the grab bucket and the upper rim of a chute-like member through which the goods to be transloaded are from the grab bucket passed into a receiver, are flange-shaped and of at least nearly equal circumferential dimensions. If desired, an elastic member, e.g. a sealing ring or an inflatable hose may rest on and be connected to the flange-shaped rim of the chute-like member.

Abstract: A method of and electrolytic cell for making hydrogen peroxide, according which oxygen is introduced into an electrolyte solution which contains in dissolved form an organic compound forming a redox system. After reduction of the oxidized form of the organic compound on the cathode of the electrolytic cell, which preferably has a cathode of glass-like carbon or graphite, and which is passed through by the current and after formation of the reduced form of the organic compound, the oxygen introduced into the electrolyte solution is reduced by reaction with the thus obtained reduced form of the organic compound.

Abstract: A method of and a device for packaging blocks of foamed synthetic material in which a pair of parallel plates are mounted on a frame and are movable toward and away from each other for compressing blocks of resilient material therebetween. The machine may include blocking members for holding the articles in compressed condition and is adapted for receiving a package in which the articles can be compressed and which is provided with a releasable closure element at one end.

Abstract: A charging device, especially for supplying aluminum in the form of wire to a steel melt for quieting the melt, in which a frame positioned adjacent the melt vessel has an inclined wall on the side facing the melt and a boom slidable along the inclined wall contains feed rollers for feeding a wire through a feed tube toward the melt. The wire is derived from a reel supported in the frame with the reel being driven in payout direction. The wire is cut off at the lower end of the feed tube and is dropped into the melt together with a combustible guide sleeve which is releasably clamped to the feed tube.

Abstract: A pump for conveying liquid, especially resonance pump, which comprises an alternating current operable oscillating armature which is supported by a leaf spring, and also comprises an elastically flexible thin-walled plate which is likewise supported by the leaf spring and extends into a pump passage through which liquid is conveyed within the pump. The pump furthermore includes electromagnets adapted when energized to cause the armature alternately to swing to one and the opposite side so that the leaf spring and the plate carry out synchronous movements in a direction transverse to the longitudinal axis of the pump. The plate has a considerably lower bending resistance than the leaf spring.

Abstract: A rotary piston engine having fuel-air inlets controlled by the piston and which supply a stratified charge to the inlet chamber of the engine. The inlets comprise first inlets which are opened first and which supply a lean mixture along the sides of the cavity in which the piston moves and second inlets which supply a rich material to the central region of the cavity. Ignition of the rich mixture promotes complete combustion with a minimum of undesired combustion products, such as oxides of nitrogen, carbon monoxide, and the like.

Abstract: A method of covering a metallic pipe and other metallic articles with thermoplastic synthetic material, especially polyethylene according to which the synthetic material is in the form of a foil leaving an extruder helically wound upon a heated-up rotating steel pipe. The thus applied foil is by means of a roller pressed onto the pipe to be covered. Prior to the foil contacting the steel pipe, the foil is passed over the pressing roller through an angle range of from 25.degree. to 50.degree..

Abstract: A socket structure for a ball point refill, which comprises a ball made of corundum and arranged inside an outer supporting shell provided in its interior with a compound bearing consisting of a backing shell having a hardness exceeding 800 kg/sq.mm Vickers and an inner lining facing the ball and having a hardness of less than 200 kg/sq.mm Vickers.

Abstract: A machine for machining bars, rods, tubes and similar articles, e.g. by cutting a thread thereinto is provided with a cutting head journalled by means of a spindle or the like on a housing, and is also provided with a motor, e.g. an electric motor, which is axially aligned with the cutting head. Between the motor and the cutting head there is arranged a transmission having a driving or input gear which is drivingly connected to the motor shaft and having an output gear of the transmission drivingly connected to the cutting head. The transmission is a planetary gear transmission which is arranged in axial alignment with the motor and the cutting head.

Abstract: Brush bodies are held in recesses between webs for cleaning of a shoe by way of a foot mat of rubber, synthetic material or metal and the brushes project over the webs of the grate-formed mat. The brush bodies are insertable in the mat to be easily replaced when the brushes are worn whereby the wear on the basic body of the mat becomes reduced since the webs are used only for support and no longer for the cleaning function.

Abstract: A passenger seat structure for vehicles which comprises an underframe having at least one seat with a back fastened thereto. The underframe includes a substantially horizontal supporting member which has only that end thereof which is adjacent one side wall of the vehicle by a support connected to the floor of the vehicle. The horizontal supporting member which may be hairpin-shaped has its individual legs interconnected and has one end of a reinforcement connected to the bottom side of the supporting member while the other end of the reinforcement member is connected to the support which latter is connected to the vehicle floor.

Abstract: A mixing device for mixing flowable materials, especially dry materials, such as pulverant or powdered materials, in which a pair of inlet conduits have the downstream ends connected to a fitting which is also connected to the upstream end of a discharge conduit with a valve for selectively controlling the downstream ends of the supply conduits. Separate supply chambers are connected to the upstream ends of the supply conduits and charge a respective material into the associated supply conduit in conformity with the setting of the flap valve.A secondary mixing device is connected to receive mixed material in the discharge conduit for further mixing of the material while air may also be extracted from the material.

Abstract: A control system for gas turbines with a gas generator which comprises a compressor, a combustion chamber, and a compressor turbine, with a power take-off device and a thrust device arranged past said gas generator and adjustable as to through-put preferably in the form of an efficiency turbine provided with an adjustale guide wheel, with a thrust nozzle variable with regard to its cross section or with an adjustable propeller, and with a fuel metering valve the metering cross section of which in influenced by values of condition of state of the gas generator. As values of condition of state for the adjustment of the fuel metering valve there are selected the temperature at the entrance into the combustion chamber or at the exit of the compressor, or the pressure in front of the compressor turbine, or a setting member of a speed governor of the gas generator which adjusting member is adapted to be influenced at will.

Abstract: A telescopic boom for movable cranes with at least one hydraulically operable telescopic slide and with at least one mechanically operable telescopic slide. The pushing out movement and the retracting movement of the mechanically actuated telescopic slide is effected by means of a holding bar having a free end portion provided with a pressing or pushing member and with a pulling member offset by 180.degree. with regard to the pressing or pushing member. The other end of the holding bar is provided with a transverse bolt for engagement with a bearing on the at least one hydraulically operable slide. The mechanically operable telescopic slide is provided with cams extending transverse to its longitudinal direction of movement for cooperation with the holding bar.