Abstract: A method for producing a molded body containing highly radioactive wastes. The wastes are mixed with molten glass or are melted together with glass formers, and converted into glass granules or glass powder. These granules or powder are mixed with a metal powder containing at least one of the metals lead, iron, silver, cobalt, nickel and tin, and the mixture is condensed at pressures of 25 to 500 Newtons/mm.sup.2 to form a molded body.

Abstract: A molding tool for making articles by deep-drawing a heated thermoplastic foil includes a matrix having an inner wall face defining an opening, a mold defining a mold cavity aligned with the opening, and a depressor movably received in the opening of the matrix for clamping marginal portions of the foil during molding operation. A heat conducting sleeve is immobilized in the opening and surrounds the depressor. The outer face of the sleeve and portions of the inner wall face of the matrix define an annular chamber which surrounds the sleeve. A seal is provided between the matrix and the sleeve for rendering the annular chamber fluid tight. Channels are provided in the matrix for introducing a coolant into the annular chamber.

Abstract: A liquid-level measuring device including, in effect, two similar elongate members each adapted to be partially submerged in a liquid, the two elongate members being displaced lengthwise relative to one another by an odd number of quarter wavelengths of a predetermined wavelength of a chosen flexurally resonant mode of the elongate members. Each elongate member has flexure wave transmitting elements in contact therewith for launching flexure waves along the member and flexure wave receiving elements in contact with the member for receiving flexure waves launched by the transmitting elements. Also, associated with each elongate member is a phase detection arrangement connected both to the transmitting elements and to the receiving elements for detecting and comparing the phase of the flexure waves at the transmitting elements with the phase at the receiving elements so as to obtain a phase difference measurement, the magnitude of which provides an indication of the resonance frequency of the elongate member.

Abstract: A word processing machine for printing text in the form of successive lines of characters on a record carrier and including a printing mechanism constructed to operate with interchangeable typing elements, each typing element carrying a selected set of type characters each corresponding to a respective character representation, a function keyboard for effecting input of first and second function instructions, input of the first instruction being effected when character representations are to be inputted which correspond to type characters carried by another typing element; and a control unit responsive to the first function instruction for temporarily preventing printing of characters corresponding to character representations subsequently inputted via a character input keyboard and for storing each character representation together with the first function instruction in the memory in a manner to indicate the intended location of the associated character on the record carrier, while causing the printing mecha

Abstract: An impact fuze for barrel weapon ammunition of the type whose velocity of flight continuously decreases from the time of firing with increasing duration of flight, including a circuit arrangement for avoiding the actuation of a detonation when the impact sensor of the fuze impinges on a rain drop. The circuit arrangement is connected to the impact sensor to increase the detonation response sensitivity of the entire impact fuze during flight of the fuze.

Abstract: In a mass compensated impacting apparatus composed of at least one pair of impacting tools and a common tool carrier supporting the tools, there is provided a two-mass vibration excitation system associated with each tool and including vibrating masses which are positively linearly guided in an essentially non-resilient manner, and a unit driving the vibratory masses with phase relationships such that the resulting average of all mass forces becomes at least approximately zero.

Abstract: A cooking oven in which a ceramic gas sensor is disposed in an exhaust guide which guides air from within the oven chamber toward the exterior of the oven casing. The surface temperature of the ceramic gas sensor is changed to change the sensing characteristic of the sensor, so that the single sensor can sense both water vapor and soot given off from food being cooked. A voltage source including a stabilized direct current voltage source and a non-stabilized or alternating current voltage source is provided for supplying power to the ceramic gas sensor. In the soot sensing mode, the surface of the ceramic gas sensor is heated by the power supplied from the stabilized direct current voltage source to stabilize the soot sensing characteristic of the sensor. An electronic circuit controlling the cooking operation includes a plurality of amplifiers having different gains which are suitably selected to deal with the humidity sensing mode and the soot sensing mode.

Abstract: Waste paper containing encapsulated constituents such as inks is bleached by pulping it in the presence of an aqueous alkaline solution which contains a peroxide compound such as hydrogen peroxide.

Abstract: A web laying machine for laying a web in superposed layers on a laying table has a laying carriage traveling back and forth along the length of the laying table between first and second end positions, a web laying unit vertically displaceably mounted on the laying carriage and a web holding unit arranged at the first end position for immobilizing the web while the laying carriage moves from the first end position to the second end position. The web laying unit is maintained, during at least the greatest part of the travel of the laying carriage between the two end positions, at a laying height above the laying table. The laying height is at a higher level than the height position of the web laying unit while the laying carriage is in the first end position. Further, the web laying unit is lowered at least approximately to the level of the precedingly deposited web layer or, in the absence thereof, to the level of the laying table, at the latest when the laying carriage reaches the web holding unit.

Abstract: An apparatus for assembling cooling tubes and fin elements in the manufacture of heat exchangers, particularly radiators for motor vehicles, comprises stations for feeding the tubes and the fin elements to grooves in a rotatable drum. A tube and a fin element are positioned together in each groove in the drum and are then ejected together at an ejecting station by an expelling device. An advancing means advances the tube and the fin element along a transportation path in an alternate relationship. The tubes and the fin element are soldered to form units during their passage through a soldering station. In a preferred embodiment the feeding station for the fin elements is provided with a separate groove into which the fin elements are fed, before the transfer to the grooved drum.

Abstract: A process for the manufacture of shaped articles from compositions containing 30 to 70% by weight of polyolefine which is a high density polyethylene modified with polar monomers and 30 to 70% by weight of cellulosic fibres. These compositions are malaxated at a temperature at least 20.degree. C. above the melting point of the polyolefine. The process is applicable to the manufacture of panels which can be used in the automobile industry.

Abstract: The present invention comprises a method of transmitting information from a central ground station to at least one mobile auxiliary ground station via at least one base station. The auxiliary ground stations are located within the transmitting range of at least one base station, and are provided with a receiving device having a control unit and a memory. In accordance with this method, a block of messages cyclically repeated within a time frame is transmitted over a single frequency from the central ground station to the base stations. Each of the messages within the block includes an address code which corresponds to the area code of the region adjacent a corresponding base station.The base stations transmit the block of messages over a single frequency to receiving devices located in the mobile auxiliary ground stations where those messages corresponding to a selected area code are recorded and then played back.

Abstract: An apparatus for assembling cooling tubes and fin elements in the manufacture of heat exchangers, particularly radiators for motor vehicles, comprises stations for feeding the tubes and the fin elements to grooves in a rotatable drum. A tube and a fin element are positioned together in each groove, and are then ejected together at an ejecting station by an expelling device. An advancing means advances the tube and the fin element along a transportation path. The tubes and the fin elements are soldered to form units during their passage along the transportation path through a soldering station. The expelling device initially operates at a fast speed to eject the tubes and fins and then operates at a second slower speed to advance, in cooperation with the advancing means, the tubes and fins along the transportation path.

Abstract: A method and apparatus for the production of a composite sheet material and a material produced thereby are described, a typical product being a lightweight permanent or temporary formwork sheet of accurate thickness and parallelism made from material including glass fiber reinforced cement. A base or mould is moved through successive stations at which uncured but curable material is deposited in layers thereon. At least the final layer is consolidated by a local surface treatment with a vibratory screeder, the influence of which spreads through the material to promote intimate bonding together of the uncured layers. In a preferred form, the material comprises three layers, the first and third being of glass fiber reinforced cement and the central second layer being of cementitious material including a lightweight aggregate such as hollow microspheres.

Abstract: A hydraulic amplifier having a housing provided with pressure and return conduits, an amplifier piston, and a control slide. The piston is slidably arranged in an axial bore of the housing and itself has a blind axial bore within which the control slide is arranged. The piston and slide together constitute a unit which is free of pressure equalization and which is provided with two sets of passages for selectively placing the face of the piston in communication with the pressure and return conduits, respectively, depending on the axial position of the slide in the blind bore of the piston. The passages are asymmetrical with respect to the peripheral surface of the slide and are so constructed and arranged that whichever set of passages is closed, the slide is pressed radially against the closed passage under the influence of certain pressure differences which prevail in the hydraulic amplifier.

Abstract: A needle-roller type chuck for machine tools which includes a chuck body having a chuck barrel integral with the leading end portion of the chuck body. The chuck barrel has a leading end portion and an outer peripheral surface tapered to form a conical surface, and includes a plurality of holes extending from the leading end of the chuck barrel toward the chuck body. A rotatable clamping ring is positioned over the chuck barrel and has an inner conical surface extending in the axial direction of the chuck and parallel with the outer periperal surface of the chuck barrel. A needle-roller assembly having a plurality of needle rollers is positioned between the chuck barrel and the clamping ring in rotatable contact with the conical surface of the chuck barrel and the clamping ring.

Abstract: An electrophotographic recording material including a dual photoconductive layer containing selenium applied to an electrically conductive substrate. The dual photoconductive layer includes a layer of arsenic selenide applied to the substrate, and a layer of an arsenic-selenium-tellurium compound superposed on the arsenic selenide layer. The arsenic-selenium-tellurium compound has the formula As.sub.2 Se.sub.3-x Te.sub.x, where 0<X<3.

Abstract: For separating waste from a fiber-and-waste mixture in a textile machine, the mixture is tangentially thrown from a rotating roll by centrifugal force. An air flow is directed onto the traveling particles of the mixture such that fibers are returned to the roll, while the waste particles are allowed to continue their travel. Subsequently, the waste particles are removed by suction.

Abstract: A gyrocompass including a first gimbal, a gyro motor mounted in the first gimbal and including a gyro rotor mounted to rotate about a horizontally alignable spin axis, a pendulous body in which the first gimbal is mounted to be rotatable about a vertically alignable axis of rotation, a housing in which the body is rotatably suspended, a verticality device associated with the body for allowing the body to assume an orientation in the housing in which the axis of rotation is vertical, and a follow-up device including a pickup mounted for sensing the angular position, about the axis of rotation, of the gimbal relative to the body and a drive connected for rotating the body relative to the housing about the axis of rotation in dependence on the position sensed by the pickup. The drive can be constituted by a stepping motor constructed to rotate in highly uniform steps and simultaneously serving to provide an indication of the angular position of the body relative to the housing about the axis of rotation.