Abstract: Keyboard apparatus, for example for a word processor comprises a standard alpha-numeric keyboard having an additional special key. On striking the spacer bar followed by a key corresponding to a letter and followed by the special key, the apparatus operates to print or to store for subsequent printing a predetermined complete word allocated to that particular letter. The words are predetermined according to their frequency of occurrence. For example, "v" may correspond to "very". If the striking of the letter key has not been immediately preceded by striking of the spacer bar, then the apparatus operates to print or to store for subsequent printing a predetermined word ending allocated to that particular letter. For example, "m" may correspond to "ment". The apparatus can also operate to incorporate capital letters where appropriate and to print or store for subsequent printing complete words in response to the non-alphabetic keys.

Abstract: A recording head for ink mosaic printers has a plurality of channels communicating with an ink supply each of which has an individually controllable electro-mechanical transducer operable to eject ink droplets from respective channels and each channel further having at least two nozzle openings through which the ink is ejected toward a carrier medium for achieving a finer pattern of droplets on the carrier medium for improved resolution and adaptability to different types of texts.

Abstract: In an exemplary embodiment, an ultrasonic array has an installation for dynamic focusing at least in the transmitting mode. It is the object of the disclosure to avoid excessively great time loss, and yet to permit dynamic focusing also in the transmitting mode. This object is achieved in that, in the case of a specifiable number of depth regions (with a respective fixed focusing in each depth region) preferably associated with each scanning line of the ultrasonic scanning, the transmitting/receiving cycle for each fixed focusing is progressively introduced in such a manner that, for every depth region of each such scanning line, transmission is effected at such a time-point which immediately follows, for example, that time interval in which echo information was received from the chronologically prior-scanned depth region for such scanning line.

Abstract: A recloseable bag is provided with lip projection above the bag mouth and carrying a bendable retaining strip with opposite end tab extensions projecting into overhanging relation to clearance indentations in the side edges of the bag extending from adjacent to the lower edge of the lip portion downwardly to a substantial distance below the bag mouth opening so that the lip portion is adapted to be folded down over and into closing relation to the bag mouth opening and the tab extensions adapted to be bent over to maintain the bag closed. Gussets may be provided in the bag bottom to provide spreadable base under bag content load for supporting the loaded bag in upright position. A method of making the bag is disclosed.

Abstract: An exemplary embodiment comprises a metering device which can be worn on the body or which is preferably implantable in the body, the metering device exhibiting a delivery unit for the dosed delivery of the fluid from a supply container to a discharge aperture of a catheter and also exhibiting an appertaining operating circuit, and an external control and programming device. The operating circuit in the metering device and the control circuit in the control device can be inductively coupled for operational signal transmission, to which end at least one transmission coil is present in the control device and at least one reception coil is present in the metering device. Given implanted devices, it is the object of the disclosure to guarantee the highest degree of patient security.

Abstract: A contact structure on indium-containing III-V semiconductor material is comprised of a four layer sequence consisting of an indium layer in direct contact with the semiconductor material, a zinc layer in contact with the indium layer, a chromium-nickel or chromium or palladium or platinum layer in contact with the zinc layer and a gold layer for external contacting with a lead. An exemplary embodiment of such contact structure exhibits specific contact resistance ranging between about 10.sup.-4 and 10.sup.-5 ohm.multidot. cm.sup.2.

Abstract: Conventional industry practice has been to provide apex seals along adjoining intersecting peripheral surfaces of the envelope members in trochoidal rotary devices. The trochoidal member profiles are then recessed by a seal offset amount and the seals extended from the apices of the envelope member by the seal offset amount to minimize reciprocation of the seals in their grooves. In accordance with the invention, modified epitrochoids and corresponding envelopes are formed so that sealing faces of the apex seals can be substantially continuous with the envelope peripheral surfaces. In this manner, nearly ideal expansion ratios are achievable in such rotary devices and wider sealing faces can be used than heretofore practical.

Abstract: A method and apparatus for representing characters employ a printing unit to print symbols which correspond to characters, the characters being represented either by individual printed symbols or by two or more symbols printed in sequence or two or more overstruck symbols. The characters to be printed are encoded into one or more data words, each data word having a code word associated therewith which is stored in one of three memories which serve to address the printing unit to represent a particular symbol or symbols. If a character is encoded by a single data word, this single data word is supplied to a first memory and if the corresponding code word is contained in the first memory, the code word is released to the printing unit and the symbol is printed. If the corresponding code word is not contained in the first memory, an address word for a second memory is read from the first memory, this address word containing the code words and associated positioning words for the character.

Abstract: A data processing system has virtual memory addressing and includes a buffer between the working memory and the central processor. The buffer includes a data buffer divided into a plurality of banks of identical size and a plurality of tag/flag memories respectively assigned to the data banks for storing the page address. The data buffer bank and the tag/flag memories are additionally addressed, beyond the page class address, with as many further, directly connected address bits of a virtual page address as are required for the binary addressing of the individual data buffer banks. The virtual partial addressing of the buffer provides a simple addressing for the case in which memory modules of the buffer banks have a capacity beyond the page size.

Abstract: An optical cut-off filter characterized by a multi-layer system comprising of a sequence of dielectric layers which are bordered on each side by a transparent medium having an equal or same index of refraction with the index of refraction of each of the dielectric layers being selected so that for a preselected radiation angle of incidence, the band paths of the filter have an envelope of reflected secondary maximum for a component vibrating perpendicular to the radiation plane of incidence and the envelope for a component vibrating parallel to the radiation of planar incidence of the electrical field vector of incident radiation, and both envelopes exhibit zero locations which have a different wavelength due to the selection of the index of refraction of the dielectric layers forming the filter.

Abstract: A piling assembly for a sheet stacker utilizes air pressure to corrugate a paper sheet for stiffness and to transport the sheet from a conveyor onto a pile formed against a backstop. The assembly is comprised of a plurality of telescoping rods which overlie the sheet pile and issue air jets in a downward and lateral direction onto the upper surface of a sheet. The mechanism further includes a lift means situated beneath the sheet and directing air against the undersurface of the sheet, so that the sheet can float over the pile as the sheet is jogged against the backstop in the stacker. The backstop is made movable and the telescoping rods are adjustable to accommodate various lengths of sheet in the stacker.

Abstract: A system for setting up a data display device on a work surface, functions for elevation adjusting, for rotating, and for swivelling the data display device. The system, which is particularly economical, has a stand with a telescope member adjustable in height thereon. A base plate is attached thereupon, and a rotary plate is supported on the base plate. The rotary plate has an arch 5 upon which sliding elements are guided, and to which the data display device is fastened.

Abstract: An electro-optical display device has a fluorescently activated plate disposed in front of a passive display in the line of sight of a viewer. The entire surface of the fluorescently activated plate is uncovered and is available for collecting ambient light to provide an image of increased intensity and allowing the device to be utilized in environments having low optical radiation levels. The fluorescently activated plate has exit windows thereon for retransmitting the light as controlled by the switchable regions of the passive display in a designated pattern to a viewer.

Abstract: A method and material for the manufacture of improved bearing elements such as annular inner and outer bearing ring blanks for ball, roller and needle bearing assemblies comprising the steps of mixing a powder consisting substantially of iron with ferro-alloy powders of substantially smaller size, each ferro-alloy containing at least 80% iron and the balance being an alloying element, together with graphite powder and a lubricant, compacting the resulting mixture to form a preform, pre-sintering the preform, and then coating the sintered preform with a stop-off and lubricant. The preform is subjected to a plastic deformation of at least 50% in a cold (room temperature) forging operation to produce an article which is at least 98% dense and has approximately the shape of the finished article. This cold forged shape is resintered and annealed, after which the annealed and resintered shape is roll formed into substantially final dimensions.

Abstract: A splittable fiber optical waveguide and a method of manufacture characterized by the fiber having at least one optical core embedded in a cladding material and at least one pair of longitudinal indentations on an outer surface of the fiber. The splittable fiber is formed by being drawn from a preform which has longitudinal grooves or indentations on an outer surface.

Abstract: A control apparatus for a rotary valve-driven jigging machine for processing coal or other minerals, particularly for a rotary valve-driven throughput jigging machine whose pulse chambers periodically are charged with compressed air in order to generate a pulse motion and are disposed under the jig screen, is characterized in that the level of the working air pressure in the pulse chambers is changed as a function of changes of the size of the stroke of the separating liquid. The change of the level of the working air pressure in the pulse chambers occurs by a controlled throttling of the outgoing air and/or of the incoming air.

Abstract: A mirror assembly mountable on conventional automobile vehicle windshield visors of the type swingable from an upright dependent use position between the driver and the windshield and an overhead storage position above the windshield has a frame clipped on the visor swingable to a depending position in front of the driver in both the use and storage positions of the visor with a mirror hinged on the frame to swing laterally of the visor to positions providing clear vision to the driver of the blind spot along the driver's side adjacent the rear end of the vehicle. In visor installations swinging forwardly to a storage position, a single fore and aft swinging hinged mirror unit is sufficient. In visor installations swinging rearwardly to a storage position, a pair of mirror units are provided to overlie both faces of the visor.

Abstract: The present invention comprises an improved composite wall structure which includes a pair of outer poured concrete layers which are separated by a high density foam insulating panel which is mounted between the concrete layers and includes a plurality of time mechanisms for holding the insulated layer in place while the concrete is being poured and hardened, wherein the holding means comprises metal rods and are low heat conductive rods such as polyglass impregnated plastic rods upon which a pair of holding spools are mounted which engage opposite sides of the insulating panel so as to hold it in a predetermined position.Also disclosed is a novel corner form arrangement.

Abstract: A process for monitoring analog and digital mobile radio connections is disclosed within the framework of a mobile radio network comprising a number of radio base stations in a mutual spatial arrangement in the form of a cellular system having overlapping radio ranges. A predetermined number of radio ranges, directly adjacent to one another, form a group of radio ranges in which the total number of available frequency channels is repeated. A simple functionally-reliable monitoring system provides that the useful signals transmitted in the specific time slots are radio range related information blocks which are time compressed and delayed at the transmitting end. Data block sequences containing monitoring signals are inserted into the time gaps which arise during time compression. At the receiving end, following the gating out of the data block sequences to a signal processing unit, the compressed received useful signal is fed to an expansion device.