Abstract: An apparatus for opening fiber bales includes an opening member arranged for travel along serially arranged fiber bales to execute opening passes; a grate including parallel-spaced grate bars having an operative position in which they extend parallel to the direction of travel of the opening member and press down on an upper surface of the bales. The opening member has opening elements projecting through clearances defined between adjoining grate bars. The operative position of the grate is varied substantially in a horizontal direction transversely to the direction of travel of the opening member and relative to the opening elements, whereby ridges of bale material formed underneath the grate bars are periodically exposed.

Abstract: A number of planar diplexers which intersect a beam radiated from a primary projector at respectively predetermined angles, which are separated from the projector and from each other, are provided with respectively predetermined conductor patterns. The diplexers are arranged successively in a frame together with the primary projector, whereby various radiation patterns can be formed by different combinations of a number of beams which are reflected respectively by the planar diplexers at respectively predetermined rates. As a result, a power distribution type antenna having a small and simple structure adapted for multipurpose and multifunction applications, particularly for installation on a communication satellite, based on the portability and the ease of assembling thereof, can be realized.

Abstract: A height adjustable suspension for supporting a fixture frame from an overhead location has a drive shaft rotatably supported in the frame and extending parallel to the length dimension of the frame, a motor supported in the frame and operatively connected with the shaft for rotating the same, a plurality of longitudinally spaced winding drums mounted on the shaft for rotation therewith and separate suspension cables associated with each winding drum. Each cable is mounted on the overhead location and has an end directly affixed to the respective drum. The course of each cable from the overhead location to the respective winding drum is, at all points of the cable, perpendicular to the length dimension of the frame.

Abstract: A method of embedding semiconductor components in plastics comprising inserting components into the plastics material and thereafter hardening the plastics material by irradiation with high energy beams.

Abstract: A process for the recovery of carboxylic acids from mixtures containing glycol esters derived from these acids. The process comprises reacting these mixtures at boiling with water to form carboxylic acid and entraining the carboxylic acid formed by means of the water by azeotropic distillation, so as to separate off a mixture of carboxylic acid and water. This mixture is subjected to extractive distillation by means of an organic solvent which is insoluble in water and in which water is insoluble. A mixture of water and organic solvent is thereby separated from a solution of carboxylic acid in the organic solvent.

Abstract: A holding device used in a drawing-in device for inserting winding coils into a stator core of an electrical machine from a transfer tool carrying the winding coils. The holding device includes a stationary cam plate defining therein a cam groove and a pusher block supporting a holding down-plate, which pusher block bears guide rollers cooperating with the cam groove so that the holding-down plate is guided to the stator core disposed on the transfer tool and then applies a force in the direction of the stator core axis about which an associated rotor of electrical machine is rotated.

Abstract: Apparatus for use in supporting the roof of an underground mine working over a zone exposed by the passage of a mining machine along an upwardly extending face of the working and by which a flexible mat is applied to the roof which has been newly exposed, such apparatus comprising an applicator means for applying a strip of flexible roof mat drawn off from a store in a position such that it extends with its length running longitudinally of the newly exposed zone, means for releasably mounting said applicator means in an operative position of use on said mining machine and transfer means for moving said applicator means out of said position of use at such times as are required to a further position.

Abstract: An antenna feedhorn comprising a transition waveguide for matching the cross section of the feeder line to the cross section of a subsequent hybrid mode exciting section followed by a horn section with an elliptical aperture, and with the hybrid mode exciting section and the horn section each being provided with a corrugated structure. The hybrid mode exciting section has a circular cross section and the horn section has a cross section which steadily widens from the circular cross section of the hybrid mode exciting section to the elliptical cross section of the horn aperture.

Abstract: A laminated structure suitable for use for the interior decorating of buildings and for motor vehicle upholstery comprising at least one decorative layer of organic material, which is combined, by hot pressing, with a support consisting of a polyolefin sheet, in which the polyolefin sheet comprises from 10 to 90% by weight of cellulose fibres and from 90 to 10% by weight of a polyolefin which is modified by polar monomeric units derived from at least one monomer chosen from the group consisting of unsaturated carboxylic acids, the corresponding anhydrides and derivatives thereof.

Abstract: The invention concerns thyratrons and in particular thyratrons which are required to be able to conduct protectively in a reverse direction. In order to assist in such reverse conduction an electrode which at such times acts as a cathode e.g. a conventional anode is formed or includes material of low work function such as tungsten impregnated with barium aluminate. Where the electrode in question is a plate anode the disc or plate is itself formed of the low work function material. Where the anode is a so-called hollow anode material of low work function may be introduced within the interior of the hollow anode. Where the anode electrode is in the well known form of an inverted cup material of low work function may be provided as a layer on the surface thereof facing the cathode.

Abstract: A cross-sectionally U-shaped radially inwardly open piston ring for a piston slidably received in a cylinder and dividing the cylinder into a high-pressure side and a low-pressure side. The piston ring includes first and second radially inwardly projecting, circumferentially extending legs for being received in respective grooves of the piston, while straddling a radially outwardly projecting, circumferentially extending web forming part of the piston. That leg which is closer to the high-pressure side than the other leg when the piston ring is in place on the piston, is resiliently deformable in a direction parallel to the axis of the piston in response to pressures prevailing at the high-pressure side, whereby the leg is circumferentially pressed against the web forming part of the piston.

Abstract: A method for transmitting data between at least one central office and a plurality of mobile radio stations via a relay station by a time multiplex transmission procedure in which signals are transmitted in a succession of time frames structure and the central office transmits on a first frequency to all mobile radio stations via the relay station, which method includes:causing the central office to periodically transmit different messages at arbitrarily selected times, which messages include routine inquiry messages directed to each mobile station in sequence during each time frame;causing each mobile station to respond to an inquiry message by transmitting a selected short message on a second frequency;causing a selected mobile station to transmit data to the central office by transmitting to the central office an announcement of the intent to transmit data during a first time frame, causing the central office to set aside reception capacity for the data in a time frame following the first time frame, and t

Abstract: In a gasket made of a fibrous and/or porous material impregnated with a polymerizable saturating agent which is partially polymerized only to a plastically deformable consistency, an additive which prevents complete polymerization and hardening is applied to the surfaces of the gasket after impregnation with the saturating agent and partial polymerization.

Abstract: A ground covering element adapted for positioning adjacent another ground covering element. The outer contour of the ground covering element forms projections and recesses about its entire periphery, has corner projections which form the vertices of a rectangle and line portions all of which are oblique to the sides of the rectangle connecting the corner projections. At least two of the line portions connecting each of the vertices are of equal length and the remaining line portions have lengths which are integer multiples of the lengths of the at least two line portions of equal length. A plurality of irregular spaced polygons project from the top surface to form raised portions, the majority of the polygons differing in shape from each other. The edges of the raised portions are straight and separated from each other by dummy gaps having widths which vary linearly along the entire length thereof and from the periphery of the ground covering element by marginal dummy gaps.

Abstract: A method and an apparatus for grouping flat items in stacks, particularly cookies which are advanced to a grouping device in at least three mutually parallel channels. The grouping device forms mixed groups of the items such that each group contains at least one item taken from each channel. For the purpose of compensating for an undersupply of items in at least one channel, the quantity of items which is normally taken from such an undersupplied channel is decreased by a first quantity and the quantity of items which is normally taken from the other, normally supplied channels is increased by a second quantity such that as the cadenced removal of items from the channels progresses, the number of items in the obtained mixed groups remains constant.

Abstract: A refueling system adapted to a gasoline service station. The system comprises a refueling machine unit for feeding fuel, a flowmeter for measuring the amount of fed fuel and a controller for setting the amount of fuel to be fed. The controller also reads out the amount of fuel being fed so as to control the refueling machine unit, whereby fuel can be sold automatically and accurately corresponding to an amount ordered or a price offered by the customer.

Abstract: Method for solidifying high and medium radioactivity and/or actinide containing aqueous waste concentrates or fine-grained solid wastes suspended in water for final noncontaminating storage. The waste concentrates or suspensions are set, by evaporation, to a water content in the range between 40 and 80 percent by weight, and a solid content whose metal ion and/or metal oxide component lies between 10 and 30 percent by weight of the evaporate being formed. The pH of the evaporate is set to between 5 and 10. The resulting evaporate is then pelletized with the aid of a clay-like substance. The pellets are then heat treated, including drying at temperatures between room temperature and about 150.degree. C., then calcining at room temperatures up to about 800.degree. C. and subsequently firing at temperatures between 800.degree. C. and 1400.degree. C. to form practically undissolvable mineral phases. The pellets are then enclosed on all sides in a dense, continuous ceramic or metallic matrix.

Abstract: A magnetic head and a production method therefore in which permanent magnet films for applying a DC bias magnetic field Hd h to a magnetoresistive effect element film (MR element film) is arranged on both sides of the thickness dimension of the MR element film through at least a non-magnetic film therebetween. In making the MR element film thicker in order to reduce distortion, the DC bias magnetic field Hd b to be applied to the MR element film is also required to be increased. Unlike the prior art in which the above-mentioned requirement is met by increasing the thickness of the permanent magnet film under the thickness of the MR element film resulting in the problem of breakage of a film member above or under the thickness of the permanent magnet film, the invention further comprises a second permanent magnet film above the thickness of the MR element film without increasing the thickness of the first permanent magnet film.

Abstract: A process for the production of carboxyl compounds such as caprolactones, in which the corresponding carbonyl compounds are oxidized with hydrogen peroxide in the presence of a catalyst in a substantially anhydrous liquid medium. The water formed by the reaction and any water introduced into the reaction mixture are removed from the reaction mixture.

Abstract: An electric pressure switch for use with textile machines and the like has a U-shaped tube filled with a liquid. One of the legs is above the liquid level in communication with a source of variable fluid pressure, for example a fiber feeding chute of a textile machine and this same leg, with the other leg, is provided with two or more vertically spaced detecting arrangements which detect changes in the position of the liquid level which occur as the fluid pressure fluctuates, and such detections are converted into electrical signals which can control various functions, such as the drive for fiber feeding devices or the like.