Abstract: Simple cleaning, exact dosing and a high degree of operating safety are assured with a dosing device for dispensing a liquid through a liquid dispensing nozzle from a container holding the liquid under pressure in the interior thereof, which comprises a liquid dosing piston displaceable along the axis thereof and housed in a bushing having a screw thread for attachment to the container. The piston has a valve body at an end thereof adjacent the interior of the container and a section of reduced cross section adjoining the valve body, the valve body having a cylindrical surface coaxial with the piston.

Abstract: A hearing aid adapted to be worn in the ear, comprises a housing receiving a sound transducer and a sound amplifier, the housing being shaped to fit into the ear and having an upper rim, a mounting plate defining a space for holding a battery and a sound volume adjustment control, the mounting plate having a circumferentially extending outer rim, and detachable fastening means connecting the upper housing rim and the outer mounting plate rim.

Abstract: A method for the continuous production of plates and/or shaped bodies of fibre reinforced hydraulic setting masses is described in which the mass is provided in a predetermined thickness over the entire width of the plate to be produced, on a substrate continuously moved by a belt. Fibre cuttings from a cutting device are dispersed in a desired distribution onto the surface of the mass moving with the substrate and these are subsequently incorporated into the mass by a tool acting uniformly over the entire width of the mass. The raw plate can be further processed in its still deformable condition and brought into a desired final shape.

Abstract: A welding apparatus for welding together overlapping ends of two lengths of thermoplastic synthetic resin sheets at a welding station comprises a wedge-shaped heating device for softening the thermoplastic synthetic resin along the overlapping sheet ends, the heating device being arranged ahead of the welding station in an operating direction and being displaceable in said direction. The apparatus has a frame including two parallel frame parts, a part connecting the two frame parts, the connecting part being rigidly affixed to one of the frame parts and the other frame part being pivotally mounted on the connecting part, and spring steel rods biasing the other frame part for pivoting towards the one frame part. Two oppositely disposed, motor-driven pressure rollers are pressable against each other, one of the rollers being mounted on the one frame part and the other roller being mounted on the other frame part.

Abstract: A track leveling, lining and tamping machine comprises a track lifting assembly, a leveling reference system associated with the track lifting assembly, the reference system including a reference line associated with each track rail, each reference line having a forward end and a rear end, a forward track sensing element supporting the forward end of the reference lines in an uncorrected track section, a rear track sensing element supporting the rear end of the reference lines in a corrected track section, and a level sensor associated with each track rail and supported on a corrected track section rearwardly of the track lifting assembly for measuring the level of each track rail with respect to the associated reference line, the level sensor generating a control signal responsive to the measured level, an element for measuring the cross level mounted on the rear track sensing element, the cross level measuring element generating a correction signal indicating any residual error in the desired cross level, a

Abstract: Workpieces to be machined by a machine tool are taken from pallets by a loader-unloader, which subsequently deposits the machined workpieces on pallets. To simplify the handling of the pallets and to reduce the nonproductive times, a pallet support is provided with a first stack station for supporting a stack of pallets carrying workpieces to be machined and with a second stack station for supporting a stack of pallets for receiving machined workpieces. The loader-unloader is operable to lift an empty pallet from the top of the first stack and to transfer said empty pallet to the second stack station.

Abstract: The filter comprises a pressure vessel, which contains vertically spaced apart partitions for supporting respective layers of a particulate filtering material. In order to ensure that the result of the filtration will not be influenced by fluctuations of the flow, pressure and temperature conditions of the solids-laden fluid to be filtered, each layer of filtering material is enclosed by a sheath, which is permeable to the fluid to be filtered and impermeable to the filtering material and which together with said filtering material constitutes a filtering package, which is engaged at its top and bottom by two of said partitions and is compressed by said partitions under constant pressure. The partitions engaging each of said filtering packages at its top and bottom define with said filtering package passages for the supply of said solids-laden fluid to said filtering package and for withdrawing filtrate from said package.

Abstract: The present invention relates to a device for locking in a set position along arched tape (5) preferably intended for measuring and marking. The tape is guided in a trough-shaped member (10) constituting one part of a locking mechanism and in which the tape is oriented with its convex side facing away from the bottom of the member. An elastically deformable locking member (17) constituting a second part of said locking mechanism has a part (16) displaceably disposed in a direction towards and away from the convex side of the tape guided in the trough. When the locking means is enabled, the part (16) has a radius of curvature substantially corresponding to that of the arched tape, and this radius of curvature may be different from the radius of curvature of the tape in the disabled state. The thin edges of the tape (5) will thus be urged against the corners of the trough, whereby an effective lock is obtained between the tape and the trough-shaped member in the region of the elastically deformable tape.

Abstract: A conveyor arrangement for assembly parts comprises a rectilinear vibratory conveyor track comprising two conveyor track parts constituting guide members for the assembly parts, a device for feeding the assembly parts to the conveyor track, a base plate separate from the feeding device and supporting the rectilinear conveyor track, vibrating drive mounting the conveyor track on the base plate, and the guide members being adjustably displaceable in relation to the base plate.

Abstract: A checkerwork for two upright regeneration chambers of a glass melting furnace defines a multiplicity of adjacently arranged vertical passages alternatingly providing upwardly directed fresh air flow and downwardly directed exhaust flow, the passages being connected by vertically spaced openings producing air turbulence, and the vertical distance between vertically adjacent openings becoming progressively smaller towards the uppermost checkerwork region.

Abstract: In a process of producing a sustained release preparation containing indomethacin or niomethacin, the active ingredient in the form of a powder as well as one or more food grade substances having a solubility of at least 1 gram per 10 milliliters in an aqueous liquid at any pH value from 1 to 9 and a temperature of 37.degree. C., and one or more food grade substances having a solubility of at least 1 gram per 100 milliliters in an aqueous liquid at any pH value from 1 to 9 and a temperature of 37.degree. C. are thoroughly mixed and the resulting mixture is mixed with a solution of one or more food grade substances which in an aqueous liquid have(a) a solubility below 1 gram per 1000 milliliters in an aqueous liquid at any pH value from 1 to 9 and a temperature of 37.degree. C., or(b) a solubility below 1 gram per 1000 milliliters at a pH value of 1 and a temperature of 37.degree. C.

Abstract: Fever thermometer protector consisting of an expansible Plastic Film to which a dimensionally stable backing means has been attached. The invention also comprises processes for manufacturing fever thermometer protectors.

Abstract: An atmospheric gas burner assembly comprises a burner tube defining a multiplicity of gas outlet ports and an element reducing the flame temperature and, hence, the emission of oxides of nitrogen disposed above the burner tube in the flame area. To optimize the reduction of NO.sub.x emission without affecting permitted CO values and to render the values of reduction in NO.sub.x emissions largely independent of the geometry of the surrounding combustion chamber so as to obtain reproducible emission reduction values, the reducing element is constituted by a multiplicity of fins confining the flames in shafts extending therebetween, the fins extending perpendicularly above the tube and being distributed along the tube.

Abstract: A plasma torch comprises an electrode secured to a liquid-cooled electrode holder and formed with a flow passage communicating with a central outlet for delivering an ionizable gas and a nozzle body which surrounds the electrode and serves to conduct gas along the outside surface of the electrode. To permit an increase of the torch power, the central outlet communicating with the flow passage constitutes a diffuser. The outlet opening of the diffuser is axially spaced from the nozzle body.

Abstract: In a method of producing a subterranean structure comprises the steps of excavating a ditch or hole in the ground to a desired subterranean level, placing the ceiling directly on the excavated ground at this level, filling the hole in the ground, and driving an arched tunnel into the ground below the ceiling, the ceiling is fixed in position and the ground is stabilized before the hole is filled and the arched tunnel is driven into the ground, by anchoring the ceiling with retaining elements projecting downwardly from the ceiling into the ground below, and arranging the retaining elements to form piles protecting the tunnel arch at respective sides thereof and preventing earth from crashing through the tunnel arch.

Abstract: A reset mechanism for a rotary switch, which is manually switchable from a rest position into any desired switch position, for resetting the switch in response to a drop of the electric power supply grid voltage below a predetermined minimum voltage, which includes an electromagnet with an armature, a switching drive shaft including a hand grip section for manually turning the drive shaft into any desired switch position, and a further section having a pinion, shaft sections being freely rotatable relative to each other. A reset device is displaceable transversely to the shaft axis, the reset device including a rack arranged to mesh with the drive shaft pinion and biased by a return spring. A blocking ram is resiliently supported on the armature for displacement in the direction of the shaft axis.

Abstract: A mobile track leveling, lining and tamping machine has a main frame supported on undercarriages for mobility on the track in an operating direction, a drive for propelling the main frame in the operating direction, a carrier frame trailing the main frame in the operating direction, a single support and guide carriage supporting and guiding the carrier frame at a rear end thereof in the operating direction and spaced from one of the undercarriages of the main frame in the direction of the track, a tamping unit mounted on the carrier frame between the one undercarriage and the support and guide carriage, the tamping unit immediately preceding the support and guide carriage in the operating direction, a track leveling and lining unit preceding the tamping unit in the operating direction, a pivotal connection pivotally supporting a front end of the carrier frame on the main frame, and an adjustment drive at the pivotal connection for adjusting the position of the carrier frame in relation to the main frame in th

Abstract: The invention relates to a method and a device for producing and dispensing extinguishing fluids mixed with adjuvants. The adjuvants are drawn in by suction in a metered manner and fed to a suction or intake pipe of an extinguishing fluid pump. A partial volume of the extinguishing fluid proportional to the quantity of extinguishing fluid conveyed in the delivery pipe is withdrawn from the delivery pipe. A negative pressure is generated thereby, by means of which the adjuvant is drawn in by suction and mixed with the extinguishing fluid. The extinguishing fluid mixed with additive is then fed to the suction or intake pipe of the extinguishing fluid pump.

Abstract: There is provided an apparatus for controlling the oscillations of a continuous pour ingot mold which comprises at least one eccentric having a sleeve with an eccentric boring mounted to rotate on an off-center portion of a shaft. In order to eliminate the drawbacks resulting from the existence of a play between the sleeve and the shaft, the sleeve is so clamped on an off-centered shaft portion as to cancel the clamping constraints to allow the rotation of the sleeve on the shaft when the eccentricity is to be adjusted.