Abstract: Aircraft engine exhaust is mixed with air and fuel and recombusted. Air is drawn into the secondary combustion chamber from suction surfaces on wings. Exhaust of the secondary combustion chamber is blown over wing and fuselage surfaces.

Abstract: Tunnels are constructed by freezing soil and removing frozen soil between starting and end shafts of the tunnels. Tunnels are driven in an uncomplicated manner in rapidly changing soils without auxiliary construction means. A hole is bored in or near the planned axis of the intended tunnel between starting and end shafts. A soil freezing work pipe is inserted into the hole. The pipe is cooled by a cooling agent. The soil freezing work pipe continues to be cooled until an ice and frozen soil mass has formed around the work pipe, which frozen mass has a diameter which is larger than that of the planned tunnel. Frozen soil is subsequently excavated, leaving a frozen soil lining, which is immediately supported by a primary support lining or a permanent lining.

Abstract: An automatic machining apparatus includes means of sensing or measuring displacements of a work model, manual operation means for manually operating said sensing means, a displacement determining device for measuring the pressure difference responsive to the displacement measured by said sensing means, means for conversion of said pressure difference into electric signals and transmission of said signals, means for memorizing said signals transmitted from the signal transmitting means and storing the information in response to said transmitted signals, including means for computing the positional difference or disagreement between the sensing means and the work model, means for displacing machining means for machining a work piece in accordance with the necessary information provided from the memory stored in the memorizing means, means for slidably, rotatably or withdrawably mounting the sensing means nearby the machining means, means for holding the work model or work piece, means of controlling the holding

Abstract: Blast furnace flue dust is used as a catalyst in a process for the hydrogenation of coal. A flowable mixture of finely divided coal particles and liquid hydrocarbons is brought to high pressure and to reaction temperature. The mixture is hydrogenated with hydrogen in the presence of blast furnace dust as a hydrogenation catalyst. The cost-effective hydrogenation catalyst is reused profitably subsequent to application in the coal hydrogenation process.Gaseous products are separated from liquid and solid reaction products. Liquid products are vaporized and are fractionated under atmospheric pressure and under vacuum. Hydrogen for use in the hydrogenation is produced by partial oxidation of the residue, and the catalyst is deposited as slag, which is returned to the blast furnace.

Abstract: Ice is stored for dispensing in a semicylindrical bin. A cone-shaped wire auger is mounted on radial extensions from a sloped axle near the bottom of the bin. A large flyte of the auger pushes ice from the rear of the bin toward smaller flytes near the front of the bin. Distal ends of generally radially extending fingers sweep an opening in the front of a bottom wall. Interchangeable plates with varied size openings control dispensing rate from the bin. The large flyte pushes the ice toward the front where some of the ice drops through the dispensing opening and some of the ice is recirculated upward. Ice clusters near the dispensing opening are broken by the fingers which extend generally radially and slightly rearwardly from the axle on which the conical auger wire is mounted.

Abstract: A beverage insulation container having a wider diameter base than sidewall sleeve created by wrapping unicellular foam around a round disk and applying a vinyl coating to the sidewall to taper the sidewall sleeve above the round disk serving as the base. A hole is cut through the sidewall sleeve near the base end of the container for preventing a vacuum from forming, thereby allowing a beverage container to be withdrawn from the holder by twisting the container and simultaneously pulling the container out of the sidewall sleeve.

Abstract: Magnetron sputtering apparatus is described in which the target cathode is constructed of one material, for example chromium, with one or more other materials deposited thereon.A disc of chromium with nickel sectors is described as one target cathode to give a nickel to chromium ratio of 10 to 90 while rectangular and cylindrical targets are also described.

Abstract: A magnetic catch holds a door in the open position. A cup-shaped metal element is supported for universal rotary motion in a plastic housing mounted on the door. A flat end of the element projects through an open end of the housing and contacts the exposed edge of a rectangular permanent magnet when the door is opened. The magnet is sandwiched between steel plates supported in the rectangular cavity of a plastic housing which is mounted on the floor or wall adjacent the door. A foam cushion resiliently biases the metal element away from the door. The magnet housing is supported on a hollow pedestal extending from a base. Mounting screws are stored inside the pedestal. Threaded plates screwed to the door and wall or floor mesh with threaded open ends of the metal element housing and the pedestal base respectively.

Abstract: A chain assembly for easy removal and replacement of a module for supporting and carrying objects along a path parallel to chain movement. The chain has a pin link with a hollow pin adjacent an extended pin. A module having cylindrical shaft and perpendicular plate is inserted into the hollow pin so that a hole in the plate fits over the extended pin. The module is secured to the chain by insertion of a cotter pin into a hole at the end of the extended pin.

Abstract: A lightweight, single-ply blanket has inwardly opening, triangular pockets sewn beneath each of its four corners. The corners of the blanket are also provided with extending, braided cord loops to add anchoring versatility and to provide rapid emptying of the entire contents of the pockets by lifting the loops.

Abstract: A apparatus and method is described for the magnetron sputtering of a workpiece to deposit a thin metallic film. A rotating magnetic field is provided in the vicinity of the workpiece to produce higher yield from a given cathode target.

Abstract: An adjustable Violin Peg and Dowel Shaving Device capable of shaving a tapered or non-tapered peg or dowel from a size substantially that of a full size cello peg down to almost the size of a toothpick with only one adjustment. The device comprises two guide bolts each extending along an axis through bores in two substantially rectangular blocks, the first block being secured to the guide bolts and having a V-shaped groove in one side facing the second block, and whereby the second block is movable along said guide bolts having a taper adjusting cutterblade mounted thereon. Two adjusting nuts threadedly received by said guide bolt ends rotatably advance said movable block toward said V-shaped groove which accommodates a peg or dowel for shaving.

Abstract: A drill pipe section enables electrical information signals to be transmitted along a borehole to feed information generated by instruments situated adjacent to the drilling bit along the drill string to monitoring and/indication equipment situated adjacent to the drilling machine. The section comprises a generally cylindrical housing member and a liner member fixedly mounted inside the housing member with an air gap defined between the two members. An electrically conductive element extends between two electrically conductive, annular coupling components one of which defines a radially inwardly directed coupling margin and the other of which defines a radially outwardly directed coupling margin.

Abstract: A device for giving an audio signal to a coil associated with an audio-band electromechanical converter uses a mixer, a first-stage low-pass filter, a limited and a second-stage low pass filter to correct distortion of the wave form of a signal from the limiter.

Abstract: A magnetic endless tape is made with a half of a normal tape width to avoid the tape housed in the housing from being pressed with unreasonable force; and a reel is provided with flanges as its upper and lower sides and a tape rolling-up wall of the reel is inclined to a V shape with respect to the upper-side flange, thereby making the reverse of the tape possible so that a portion of the tape may be rewound when the cassette is inverted without trapping the rewound portion between the normally upper flange and the layers of tape wound on the reel.

Abstract: Tracer emission sources which emit tracer gas at a predetermined constant known rate are distributed throughout a building. The preferred source is a small vessel containing a vaporous perfluorocarbon tracer (PFT) substance having a very small bore hole in the top through which the PFT vapor can escape. Time is permitted for the tracer gas to mix uniformly throughout the building and for its concentration to equilibrate with infiltrating air. The concentration of the tracer is then measured and compared to the known volume of air in the building to determine the infiltration rate. In the preferred mode, the concentration is integrated and measured by continuously sampling the tracer gas at a constant rate on activated charcoal adsorbent over a period of several weeks.

Abstract: In an electronically controlled fuel injection apparatus which has fuel injection amount control system wherein a position signal indicating an actual position of a fuel injection amount adjusting member is fed back thereto, the apparatus has a speed control data generator for controlling the apparatus without the position signal and the apparatus is adapted to be controlled in accordance with the speed control data when the position signal cannot be obtained.

Abstract: A telephone unit comprising a case containing at least a microphone and a loudspeaker and carrying a switch for putting the unit in and out of circuit. The case has in the center part of one of its sides a slot and a multi-contact connector is disposed in facing relation to this slot. The contacts of the connector are electrically connected to at least some of the components within the case. The connector provides the normal connection between these components when the unit is used alone and cooperates with a secondary complementary multi-contact connector which may be plugged in the first-mentioned connector and is connected to circuits which are insertable in the circuit contained in the case by a plugging together of the first connector and second connector.

Abstract: The invention provides a container for explosive material comprising a rigid tube (10 FIGS. 1-4, 18 FIGS. 5-8) a closure (13,14; 19,20) at each end of the tube, said tube having a recess (12; 21) in its wall between its ends to receive a detonating cartridge.