Abstract: A beam splitting prism assembly in which at least some of the prisms are separated by an air gap, optionally connected at the edges through the beam splitting layers by means of strips of a thermo-plastic material.

Abstract: A method of manufacturing an electronic device, comprising a plurality of closely spaced conductive layers on a substrate, said method comprising the steps of depositing said substrate a layer of polycrystalline semiconductor material, providing at least one aperture defined in and extending through said polycrystalline layer, effecting a material treatment via an exposed edge of said polycrystalline layer in said aperture in the presence of a masking layer on said polycrystalline layer, said treatment being effected to convert a narrow strip portion of the polycrystalline layer of substantially uniform width and underlying the masking layer adjacent the aperture into material insoluble in an etchant specific for the untreated part of said polycrystalline layer, removing said masking layer and selectively removing, with the use of said etchant, the untreated polycrystalline semiconductor material to leave a narrow strip of material present on and raised above the substrate, and effecting a deposition of condu

Abstract: Ion-selective electrode for selectively measuring the concentration of an ion in a solution of a mixture of ions, consisting of an ion-conducting or mixed ion-conducting - electron-conducting matrix material provided with a thin surface coating of a material which is sparingly soluble and which has one ion in common with the matrix material.

Abstract: A filling mass for low-temperature regenerators comprising one or more of the compounds of the formula A.sub.1-x B.sub.x Rh.sub.1-y X.sub.y, wherein A = Sm, Gd, Tb, Dy or a mixture thereof, wherein B = Ho, Er, Tm, Yb or a mixture thereof, wherein X = Cu, Zn, Ru, Pd, Ag, Re, Os, Ir, Pt, Au or a mixture thereof, and wherein 0.ltoreq..times..ltoreq.1 and 0.ltoreq.y<0.2.

Abstract: An arrangement suitable for producing pulse-shaped signals whose amplitude is determined by a control voltage in an electronic musical instrument. The arrangement comprises a first transistor having a control electrode to which the control voltage is applied and a main electrode connected to a point of fixed potential via an impedance. The arrangement further comprises means for transferring the output current of the first transistor, which current is determined by the control voltage, to an output in a pulse-shaped fashion. In order to convert the unipolar current pulses into bipolar current pulses the arrangement includes a second transistor whose input circuit is connected in parallel with the input circuit of the first transistor. The output current of this second transistor is subtracted from the output current of the first transistor by means of a current amplifier, the result being available at the output.

Abstract: Mechanism for an automatic record player or record changer for combined adjustment of the turntable speed and the lowering position of the pick-up arm, the lowering position of the pick-up arm being established by engagement with a lever step of a two-armed pivotable shift lever, which step has been selected by a record diameter sensing means. The free end of a single arm dead-center lever engages the shift lever at one of two possible speed settings. During pivoting of the shift lever to bring a lever step for a different dropping diameter (17 cm) into the path of the pick-up arm, the free end is pivoted beyond dead center by said lever and is swung against the switch by an over-center spring to change the speed.

Abstract: Light sensitive cyanuric azide polycondensates find use in production of positive and negative photographic relief images.

Abstract: The novel compounds of the formula 1 ##STR1## are dyes having a high dyeing power and a high heat and light stability. They may be used for dyeing synthetic resins, fibers, knitted goods and fabrics made of synthetic resins and of wool, for coloring stucco materials, inks and the like.The compounds may be produced by conventional methods.

Abstract: An electronic flash unit for igniting a gas discharge flash lamp by means of a piezoelectric element. The unit input terminals are interconnected by a series circuit comprising a rectifier and an undercritically damped parallel LC circuit. The lamp starting electrode is coupled to one main electrode via the inductor (L) and exclusive of the rectifier. The unit produces a lamp ignition signal consisting of a pulse train of alternating polarity which provides more reliable ignition of the flash lamp.

Abstract: A phonograph record player or changer having a turntable spindle whose lower end is journalled in a combined thrust and radial bearing, while the upper end of the spindle is located by two contact regions on a sleeve bearing. The upper sleeve bearing is formed with two portions extending toward the center of the bearing bore arranged so that a resultant of all of the transverse forces on the spindle passes between the two contact regions, thereby producing a phonograph with reduced wow and flutter.

Abstract: A very powerful serotonine potentiation was found of oxime ethers of the formula ##STR1## where R is methoxy, ethoxy, cyano, cyanomethyl, chlorine, methoxyethoxy or methoxymethyl and their salts which is associated with a much less strong noradrenaline potentiation. The compounds have no anti-depressive activity component based on monoamino oxidase inhibition and are substantially free from side effects.

Abstract: The invention relates to a device for generating a time-dependent current in a coil, for example, a magnetic coil. Such a magnetic coil can be used, in combination with a second coil of this kind, for generating rotary magnetic fields in a device for transporting magnetic bubbles along a bubble guide structure consisting of discrete elements on a plate of magnetic material. The device comprises two or more current connection terminals, an LC oscillator circuit, a switching element connected in series with the coil, and a control unit.

Abstract: A device for reading out the charge condition of a phototransistor by means of sampling pulses, for example read out of a transistor to be selected from a matrix of phototransistors, a voltage which is a measure of said charge condition being taken from the emitter of the phototransistor. In order to avoid the storage effect owing to the time constant which depends on the differential resistance of the base-emitter-junction, the emitter circuit of the phototransistor includes a current source which at the instant of sampling is switched on, while furthermore the emitter voltage of the phototransistor is applied to a voltage comparator circuit which supplies a voltage for switching off the current source at the instant that said emitter voltage drops below a specified reference value. In the case of read-out after a dark period some charge is drained owing to the response time of electronic systems, which charge can be compensated for by simple injection means.

Abstract: Anti-depressive compounds of the formula ##STR1## wherein R is (CH.sub.2).sub.p CN, (CH.sub.2).sub.p O(CH.sub.2).sub.q CH.sub.3 or (CH.sub.2).sub.r O(CH.sub.2)OCH.sub.3 and p = 1, 2 or 3 q = 0 or 1 and r = 0, 1 or 2.

Abstract: An incandescent lamp-reflector unit having a metal reflector in which, for increasing the reflecting surface, the neck aperture of the reflector is maintained as small as possible, is not flash-over-safe due to the small distance between bare parts of the neck of the reflector and the contact pins of the lamp. The unsafety is removed by causing the said distance to be larger than the smallest distance of the pins and the neck of the reflector by means of an insulating envelope of the pins and/or an insulating coating on and near the end face of the neck of the reflector.

Abstract: A method of manufacturing a metal silicide pattern with respect to which two electrode zones are to be provided in a self-registering manner. According to the invention the pattern is provided in the form of a layer of polycrystalline silicon and, by selective oxidation and masking, only the upper surface of the pattern is exposed to the silicide formation so that passivation problems and short circuit are avoided. The use of silicides which cannot withstand high temperatures is also possible.

Abstract: X-ray tubes with a magnetic bearing either have the disadvantage that the anode must be at earth potential, so that an asymmetric high-voltage supply is required or that -- in the case of a symmetric high voltage -- a relatively wide air gap is necessary which requires a high driving force and a bearing which has a certain amount of drawbacks. The invention provides an insulator between the anode which is at the high-voltage potential and the rotor which is at the earth potential, so that the air-gap between the rotor and stator can be relatively small and an effective magnetic bearing is possible.

Abstract: A method of electrostatic coating the inner wall of a low-pressure mercury vapour discharge lamp with luminescent material. Stearic acid and/or palmetic acid and/or salts thereof are added to the luminescent material together with nitrate in order to obtain a proper adhesion of the luminescent powder to the wall of the lamp.

Abstract: A device for winding toroidal deflection coils. A rotatable winding wheel has at least one annular flange on which a number of rollers which are each rotatable about their axis are provided, and is mounted on a frame for displacement with respect to the core to permit winding slant coils along geodetic lines, without developing slack in the wire being taken off.

Abstract: A device for coupling optical fibers each of which is secured in a capillary tube by means of a cap such that the end of the fiber is situated in one plane with the end face of the cap.The two capillary tubes are arranged one in the prolongation of the other in the boring of a deformable core which can be deformed such that radial and axial forces are exerted on the capillary tubes, with the result that the latter are simultaneously aligned and secured.