Abstract: A process for the preparation of alkyl sulfate powders, which entails spraying an aqueous solution or dispersion of alkyl sulfates into a head part of a spraying tower through single-component nozzles under pressure sufficient to form a spray mist, and drying the resulting spray mist in co-current manner using an inert gas at a temperature sufficient to afford a powder having a bulk density of at least 300 g/l.

Abstract: An alkoxidation production low in alkylene oxide and 1,4-dioxane content is prepared by reacting an alkylphenol or fatty alcohol with an alkylene oxide in the presence of an alkali fatty alkoxide obtained by direct reaction of an alkali hydroxide with a fatty alcohol at elevated temperature.

Abstract: The invention relates to an oxide-ceramic superconducting material which contains bismuth, strontium, calcium and copper, having an overall composition of Bi.sub.y Ca.sub.2 Sr.sub.2 Cu.sub.3 O.sub.x, where y is an integer from 2.35 to 2.6 and x is about 10 to 12. The material has a critical temperature T above 105 K and has a proportion of the phase Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x of at least 85% by volume. The invention also relates to a process for producing a bismuth-containing superconducting material which comprises holding the oxides or oxide precursors of bismuth, strontium, calcium and copper at a temperature in the range from 850.degree. to 890.degree. C. over a time span of a plurality of hours and adhering to the following atomic ratios:Bi:Cu>2:3Ca:Sr=0.9 to 1.50.SIGMA.(Sr+Ca):Cu=4.2:3 to 4:3.33Bi:.SIGMA.(Sr+Ca)=2.35:4 to 3.

Abstract: Alkoxidation products are prepared from amines, fatty acids and oils, which are low in alkylene oxides and 1,4-dioxane by reacting an amine, fatty acid, ester or oil with an alkylene oxide in the presence of a catalyst of an alkali fatty alkoxide obtained by reaction of an alkali hydroxide with a fatty alcohol at elevated temperature.

Abstract: An arrangement for automatically recognizing signal sequences such as spe and/or music signals, particularly useful for statistical evaluation of the frequency of play of music titles, commercial advertising spots, or verbal materials, etc. One envelope signal is generated from each preset signal sequence (e.g., music title) and time segments of the envelope signals are stored. An envelope signal is also generated from a signal sequence that is to be examined. Time segments of the envelope signal of the signal sequence to be examined are continually compared with the stored segments of the envelope signals of the preset signal sequences. When a preset degree of concordance is exceeded, a recognition signal is generated.

Abstract: In a forging machine, each ram is the piston or cylinder of a piston-cylinder hydraulic unit and the other component of the unit is attached to the forging machine frame and can be moved to adjust the ram stroke position. The piston or cylinder which constitutes the ram is guided directly in the machine frame to minimize play in the guidance of the ram component.

Abstract: A forging machine having rams arranged in the form of a cross carry respective tools adjustable transversely to the ram axes and partly overlapping one another, so that a closed pass can be formed for any size of the forging pass. To adjust the tools transversely, each tool is carried on a respective crosspiece which can be clamped against the ram end or can be released and moved transversely on the ram. The clamping and releasing and the adjustment movement are all effected by a rotary tie rod extending through the crosspiece and through the ram, having one end coupled to the crosspiece for clamping it and moving it transversely to the ram, and the other end coupled to a clamping mechanism and to a rotary adjustment drive.

Abstract: In a forging machine which has four radial rams with respective tools together forming a closed bite, each tool overlaps one adjacent tool and is overlapped by the other adjacent tool, and can be adjusted laterally relative to the radial ram axis, in the operating plane of the rams and tools, for setting the bite size.

Abstract: A positioning device, comprising a cylindrical guide element and a guide surface, is so designed that an angle of less than 90.degree., especially of from 1.degree. to 80.degree., is formed between an axis at right angles to the direction of movement of the guide element over the guide surface and the axis of rotation of the guide element, in the plane containing these two axes. The peripheral surface of the guide element can be grooved or convex. The novel positioning device can be used with advantage in any type of recording/playback apparatus for disk records.

Abstract: A method and an arrangement for detecting error signals in a magnetic disk drive apparatus uses a test disk which has a plurality of test tracks distributed over the recording area and containing special test signals, a distinction being made between orientation, adjustment and azimuth bursts. Based on the normal position of the recording tracks of the magnetic disk, the spacing of the test tracks could depend on the type of step motor if such a motor is used in the positioning device. By special control, hysteresis errors can be measured in addition to tracking errors, eccentricity errors and azimuth errors.An advantageous use is for all types of disk drives, preferably FlexyDisk drives.

Abstract: In a forging press of underfloor construction, the vertically travelling frame has a lower crosshead which fits around and is guided on a hollow guide shaft which projects downwards from the table crosshead or platten of the press. The hollow guide shaft serves also as the working cylinder of the press. A working plunger piston which is slidable in the cylinder is coupled to the lower travelling crosshead of the press frame through spherical jointing to eliminate transverse forces on the piston.

Abstract: A head arm mounting device for one or more scanning heads in recording/playback apparatus for disk records, especially flexible magnetic disks, includes a pivot shaft for the head arm, this shaft being held in a mount, with the aid of spring means, in a manner such that it has no axial play, and producing, in conjunction with the head arm loading spring, a head loading force which is constant and essentially independent of the head arm deflection. The mounting device consists essentially of a mount and a pivot shaft, either of which may be associated with a spring. A one-piece frame-shaped member with an integral spring constitutes an optimum mount. In an advantageous embodiment, means are provided for finely adjusting the force exerted by the head arm loading spring, and for compensating for tolerances in the spring force of the loading spring in the quantity production of disk drive apparatus.

Abstract: A carriage for a scanning head in recording and/or playback apparatus for disk records, a first rod-shaped guide member being provided for the support and longitudinal guidance of the carriage, and a second rod-shaped guide member being provided for the transverse support of the carriage, wherein the carriage possesses at least one prism-shaped aperture for said first rod-shaped guide member, and at least one leaf spring presses the carriage against the rod-shaped guide members.

Abstract: A drive apparatus for a recording disk, particularly a flexible magnetic disk in an envelope, comprising a rotatable clamping member which can be caused to engage one another, after the recording disk has been introduced therebetween, to clamp the disk for rotation thereof, in position between clamping surfaces of the two members. The clamping member is of axially expandable design and a resilient element is interposed between the face of the clamping member and the bottom of the recessed member so that the clamping member, prior to completion of its stroke and prior to its radial expansion, is engaged by the spring element. In this manner the spring element centers the position of the clamping member with respect to the recessed member and thereby insures clamping of the disk in its centered position.

Abstract: In a method of electrodepositing a palladium/nickel alloy coating upon a substrate wherein the coating is plated onto the substrate by electrodeposition from a bath containing 5 to 30 g per liter of palladium and 5 to 30 g per liter of nickel and having a palladium-nickel ratio such that the coating contains 30 to 90% by weight of palladium, the improvement which comprises providing in the bath during the eletrodeposition of the coating at least one sulfonyl urea compound capable of improving the corrision resistance of the coating.

Abstract: In a method of electrodepositing a palladium/nickel alloy coating upon a substrate wherein said coating is plated onto said substrate by electrodeposition from a bath containing 5 to 30 g per liter of palladium and 5 to 30 g per liter of nickel and having a palladium-nickel ratio such that the coating contains 30 to 90% by weight of palladium, the improvement which comprises providing in said bath during the electrodeposition of said coating at least one acetylene alcohol or acetylene alcohol ether capable of improving the brightness and mechanical properties of said coating.

Abstract: A method of electrodepositing a palladium/nickel alloy coating upon a substrate wherein the coating is plated onto the substrate by electrodeposition from a bath containing 5 to 30 g per liter of palladium and 5 to 30 g per liter of nickel and having a palladium-nickel ratio such that the coating contains 30 to 90% by weight of palladium. The bath is provided during the electrodeposition of the coating with at least one acetylene amine or amino alcohol capable of improving the brightness and mechanical properties of the coating.

Abstract: A corrosion inhibited composition comprises an aqueous drilling, cutting, or polishing agent, an aqueous hydraulic fluid or an aqueous antifreeze compound; and an alkali metal salt, or an aliphatic amine salt of a mixture of 2- and 3-C.sub.6-12 -alkyladipic acids, the amount of this acid component being effective as a corrosion inhibitor.

Abstract: A pressure device for flexible recording media, especially those contained in cartridges, which comprises a rigid member provided with a resilient pad, which member, secured to a pivoted lever, is located in front of the write/read area of the scanning head relative to the direction of rotation of the recording medium, and presses the recording medium against a platen, wherein the rigid member is connected to the pivoted lever via a universal joint.

Abstract: Positioner for the scanning head, mounted on a carriage, in a recording and/or playback apparatus for disk records, with a cable extending between the carriage and the drive motor, and a spring as counterforce, which positioner comprises a pulley, mounted on the carriage, and two pulleys of different diameter which are mounted on the shaft of the drive motor and to which the beginning and end of the cable are fixed, the pulley system operating on the differential pulley principle, so that greater accuracy of positioning is achieved and less torque has to be produced by the motor.