Abstract: A delay line for traveling wave tubes, in particular for the amplification of mm waves, has a wave guide which is provided with outward-leading transverse walls each of which has a central electron beam opening and at least one coupling opening and which form a line cell with the adjacent transverse wall. The delay line contains two portions having a different constant delay for the line wave, where the delay of the front line portion, considered in the direction of the electron beam, is lower than the delay of the rear line portion. A transition section is arranged between these two portions for matching and comprises a single matching cell in which at least one of the two transverse walls of the matching cell carries at least one matching pin which projects into the interior of the cell.

Abstract: A device for cleaning electrostatic copier drums. A rotary bristle brush is positioned axis parallel to the drum and contacts the drum surface. The brush is received in a shroud which includes a toner collection sub-chamber having an orifice exit to a suction system to return toner from the sub-chamber to the toner reservoir. The orifice is localized, providing a high volume air flow at the orifice opening. Oscillatory means act within the sub-chamber to insure that all toner within the sub-chamber is presented to the orifice.

Abstract: An arrangement is provided for supplying integrated injection logic (I.sup.2 L) circuits with differing currents. A first injector path is formed by a connection between an external supply voltage source and injectors of first I.sup.2 L circuits to be supplied with a first current. The first injector path is connected to the injecting emitter of a current hogging injection logic (CHIL) arrangement and a first input of the CHIL arrangement is connected to a second injector path formed by the connection to injectors of second I.sup.2 L circuits to be supplied with a second current.

Abstract: Electro-optical display device which may operate either in a one or multi-color mode and utilizes electro-optical light valves for controlling transmittance of a passive light through the device characterized by passively amplifying the brightness of the display device with the addition of a light trap which includes a fluorescent plate having mirrored edge surfaces. While the invention or improvement may be utilized with any passive optical display device, it is particularly useful with a liquid crystal display device.

Abstract: Each of paired pivot mechanisms pivotally holding a window sash within a supporting frame comprises a stationary base screwed to one of the constituent members of the supporting frame and a pivot-carrying movable base fitted over the stationary base. By manipulation of a pair of adjusting screws the movable base can be adjustably moved relatively to the stationary base in the longitudinal direction of the supporting frame member and, if desired, away from or back toward the same. The movable base is screwed to the supporting frame member via the stationary base in a desired position. The mechanism is equally applicable to either vertically or horizontally pivoted windows.

Abstract: A lubricating system for plow blades has a plurality of tube outlets positioned near a bottom portion of a plow blade and aligned to expel a dilute polymer lubricating fluid upward and onto a surface of the plow blade. As the plow blade scrapes up ground material, the scrapings distribute the lubricating fluid over the surface of the plow blade. Each of the tube outlets is supplied with lubricating fluid from a storage container via a pump connected to a positive displacement distribution block. In a farm plow system having eight separate plowshares, four positive displacement distribution blocks and one master distribution block are employed to supply lubricating fluid to twenty tube outlets.

Abstract: Multi-ply web forming stock jets directed through a slice from a single headbox into a forming zone between converging forming surfaces in a papermaking machine are maintained separated for a sufficient interval after leaving the slice opening to permit drainage and partial ply formation of the stock delivered by one of the stock jets to one of the forming surfaces before the stock in a second of the stock jets joins in fiber felting laminar relation with the contiguous surface of the partially formed ply. Flexible divider sheet members divide the slice chamber of a headbox into separate flow passages aligned respectively with different ones of headbox subchambers to receive streams of the stock from the respective subchambers and maintain the streams separated, and the flexible members extend a substantial distance out of the slice opening in the direction of flow of the stock jets to maintain stock jets separated for a sufficient interval after leaving the slice opening.

Abstract: A buried channel charge coupled device (BCCD) is operated by an improved process in a two-phase operation. The device includes a buried channel in a semiconductor substrate below an insulating layer on a surface of the substrate and below the electrodes of the device. The electrodes are divided into first and second electrodes with the first electrodes spaced apart in a first level of the insulating layer and electrically insulated from the semiconductor substrate and the second electrodes spaced apart and carried by the insulating layer in a second level and arranged over the interspaces between the first electrodes. Each of the second electrodes is electrically connected to an adjacent first electrode.

Abstract: A process and apparatus for the patterned deposition of powdered thermoplastics adhesive material on the outer surface of a textile or other porous-flexible surface form, wherein there is first insertion raked in a pattern of depressions formed in an engraved component an adhesive powder material and then on this powder a further adhesive powder material is insertion raked in the depressions, so that both the powder layers superposed one on the other are taken up by the surface form which is positioned on the engraved component.

Abstract: A tool for releasing cone locks which can generally be moved in only a single direction on a cable or rod wherein the tool is provided with a portion that can be inserted into the lock to engage and release the locking mechanism such that the lock can be removed from the cable or rod thus preventing the rod and cable from having to be cut.

Abstract: A capacitor for AC voltage applications consists of staggered wound layers of synthetic material films metallized on both sides. The metallizations are carried out on the two sides of the films with differing thicknesses, wherein at least the greater thickness metallization is contacted by means of Schoop layers. The exposed edges on the two sides of the films are provided with different widths, wherein the difference corresponds with a staggering of the films during winding.

Abstract: A stepping motor control circuit incorporates two sources of pulses for driving a stepping motor, one of which has a frequency greater than the maximum frequency which the motor can follow. A pair of shift registers are used for effecting acceleration and deceleration of the stepping motor, when the high frequency pulse source is used. A first shift register stores an acceleration pulse sequence, to supply pulses to the stepping motor at an increasing rate, after which pulses are supplied directly to the stepping motor from the high frequency pulse source. The second shift register is energized to apply deceleration pulses to the stepping motor. Pulses having a relatively low frequency are supplied directly to the stepping motor when only a small motor movement is required.

Abstract: The invention relates to a method for the production of extremely flat silicon troughs in a silicon substrate for MOS-transistors. The object is generally achieved by a localized etching process resulting in a slightly anisotropic trough characteristic and a subsequent rate controlled filling by a selection epitaxy process of said trough with a silicon material. The process is found to minimize the deleterious non-uniformities inherent in the prior art.

Abstract: A headbox for a paper making machine having a slice chamber with a vertical tube bank supplying the slice chamber and a distributor chamber behind the tube chamber tapering from a larger size to one side of the machine to a smaller size at the other side of the machine with the lower floor of the header chamber sloping upwardly and a pivotal cover extending over the tube bank and header chamber openable for access to the tube bank and header chamber.

Abstract: A method of producing a light conducting fiber comprises the steps of providing a base member of an optical material such as glass or a synthetic glass-like material, depositing at least one optical material forming layer such as a glass forming layer or a synthetic glass-like material forming layer from a liquid phase on a surface of the base member and subsequently transforming each of the layers into a film of optical material such as a glass film or a synthetic glass-like film. The base member may be a glass tube and the optical material forming layers may be deposited on an interior surface and after the layers have been transformed into a film, the tube is collapsed into a rod and then subsequently drawn into a cladded light conducting fiber. In one embodiment of the invention, the base member is a rod and the layers are deposited on a surface of the rod which is subsequently drawn into a cladded light conducting fiber.

Abstract: A centrifuge for the dewatering of a fine grained material having a downwardly flaring frusto conically shaped porous sieve cage rotatable about its axis and axially oscillatible with a preacceleration frusto conically shaped cone within the sieve cage with its larger end upwardly and a central material delivery means for supplying material to the cone and an annular spoked mounting means extending between the base of the cone and sieve cage with a drive connecting to the mounting means and an elastic connection between the rotatable drive and sieve cage and an elastic connection between the oscillatible drive and sieve cage and an annular downwardly extending solid collection housing mounted at the lower end of the sieve cage and an annular housing surrounding the sieve cage for the collection of water with the oscillatible drive and rotatable drive mounted at the base of the unit coaxial with each other.

Abstract: A method and apparatus is disclosed for the cooling of a lime shaft furnace for the calcining of limestone and which is operable with a combustible fuel. In shaft chambers of the shaft furnace, a hollow beam is provided to convey combustible fuel into the shaft chamber. Associated with the hollow beam is a cooling unit for cooling walls of the beam. A closed circuit cooling liquid system connects with the cooling unit so as to maintain a flow of a cooling liquid through the cooling unit. The cooling liquid has a boiling point of greater than 100.degree. C. This cooling liquid is continuously recooled by a heat exchanger.

Abstract: A shelf protector and tag assembly is provided for use on a shelf surface which supports merchandise. A shelf protector is provided having a planar surface which is receivable on the shelf surface to be protected and a lip portion which overhangs an outer edge of the shelf being protected. A tag holding member is attached by a support member to the lip portion of the shelf protector for displaying removable tags containing merchandise related indicia.

Abstract: A web spreading and guiding device to maintain a running paper sheet making foraminous web comprising a wire or pick-up felt transversely taut and straight running in a papermaking machine, has a pair of free running pneumatic tires having their treads in nipping relation to one another to engage a margin of the web in the nip, the tires being carried by an arm which is pivotally biased to effect transverse web stretching bias of the tires on the web margin running through the nip. Generally one of the devices will be mounted to act on one margin of the web and another of the devices on the opposite margin of the web and the devices being cooperatively biased to stretch the web in opposite directions. Means are provided to control the tire bias for correcting any deviations of the web from a straight running path.

Abstract: An amplifier stage is provided for supplying differing currents to integrated injection logic I.sup.2 L circuits. The amplifier stage has a current hogging injection logic input CHIL gate, at least one further gate, and a CHIL output gate. Each of the gates has an injecting emitter, an output and an input. First I.sup.2 L circuits connected to a first injector path connect with the input of the CHIL input gate. Second I.sup.2 L circuits having a second injector path connect with an output of the CHIL output gate. The gate provided between the input and output CHIL gates is provided as a single I.sup.2 L gate, dual I.sup.2 L gates, or the combination of an I.sup.2 L gate and a CHIL gate.