Abstract: A coal feed lock is provided for dispensing coal to a high pressure gas producer with nominal loss of high pressure gas. The coal feed lock comprises a rotor member with a diametral bore therethrough. A hydraulically activated piston is slidably mounted in the bore. With the feed lock in a charging position, coal is delivered to the bore and then the rotor member is rotated to a discharging position so as to communicate with the gas producer. The piston pushes the coal into the gas producer. The rotor member is then rotated to the charging position to receive the next load of coal.

Abstract: A coupler for connecting a radiant energy transmitting element to a radiant nergy receiving element which utilizes a specially designed lens for each element, said lenses having spherical convex segments positioned in close face-to-face relationship so that the radiant energy emerging from the transmitting element is treated as a point source which is sequentially defocused and focused by means of the lenses onto the receiving element to minimize refraction and other losses and to insure maximum coupling efficiency.

Abstract: An auxiliary channel, for example, an engineering orderwire, is derived on n existing time-division multiplex carrier system by modulating the pulse repetition rate of the digital bitstream. The modulating signal itself may be an analog or a digital signal. The modulator and demodulator both include a first-in, first-out shift register acting as a buffer, and the desired modulation is effected by varying the rate at which the digital information is fed out of the FIFO buffer at the transmitting end of the carrier system.

Abstract: An antirunaway device for a hand grenade fuze utilizes a spring biased deted firing pin-slider assembly to interlock a torque biased rotatably held detonator assembly in an out-of-line "safe" position when the biased firing pin-slider assembly senses the absence of a restraining, properly functioning, axially aligned dashpot timer assembly. A slider blocking member is depressed into a groove provided therefor, by the slider assembly, to allow the detonator assembly to rotate into an in-line "armed" position when the slider assembly mechanically senses the presence of a properly functioning dashpot timer assembly, but remains in a blocking position when the timer is not properly functioning.

Abstract: Method and apparatus for detecting tunnels beneath an area of the earth's rface wherein an oscillator couples a current into a linear conductor at the earth's surface to generate a magnetic field in the earth beneath the area. Phase angle measuring means measures phase difference between the vertical and horizontal components of the magnetic field at selected points along a line parallel to the linear conductor to detect abrupt changes in earth resistivity, changes in resistivity indicating the presence and horizontal position of a tunnel.

Abstract: 1. A device for determining preferred crystal orientation in a rotary exted shaped charge liner used in the field of ballistics comprising: an automatically controlled three circle goniometer type specimen mount; means for emitting a continuous x-ray beam onto a liner mounted in said specimen mount whereby continuous diffraction beams are reflected back in the shape of a cone; continuous detecting means and means to rotate same at the base of said cone; said detecting means being capable of producing electrical signals indicative of the intensity of the diffraction reflected beams; slip ring means connected to said detecting means; and continuous recording means connected to said slip ring means, said recording means providing an indication of the crystal orientation in said liner.

Abstract: A serial to parallel converter receives a succession of digital bits in serial form comprising discrete data formats and control formats through its input terminal, which is coupled to a data shift register and to a control shift register. When a data format is coupled into the input, a register enable circuit enables the data register to load and convert sets of changeable data bits, comprising part of the data format, to parallel form. When a control format is coupled into the input, the register enable circuit enables the control shift register to convert sets of changeable control bits, comprising part of the control format, to parallel form. One of the changeable bits in every control format immediately followed by a data format comprises an incoming data indicator.

Abstract: A high current density long life cathode for use in high power microwave e applications is made by: machining a porous tungsten pellet with copper in its pores to the desired cathode shape to form the emitting surface of the cathode and cleaning the porous pellet ultrasonically in trichloroethylene, then acetone, and then methanol; firing the tungsten pellet at about 1800.degree. C in a reducing atmosphere; etching the tungsten pellet ultrasonically in a solution of 50 parts of concentrated nitric acid in 50 parts of water; ultrasonically cleaning the tungsten pellet for about five minutes in an aqueous alkaline solution; cleaning the tungsten pellet in hot deionized water and then air drying the tungsten pellet in an oven for five minutes at about 150.degree. C; refiring the tungsten pellet in a reducing atmosphere at about 1800.degree. C; impregnating the porous tungsten pellet with a mixture of Ba.sub.3 WO.sub.6, Ba.sub.2 SrWO.sub.6 and ZrH.sub.2 in a nonreducing, nonoxidizing atmosphere at about 1900.

Abstract: A test panel for use in evaluating fluorescent penetrants and being composed of a spring steel substrate having surfaces coated with a thin electroless nickel plating capable of producing stress induced microcracks in the plated surfaces.

Abstract: A sprayable, low density ablative composition consisting essentially of:A. 100 parts by weight of a mixture of 25-65% by weight of phenolic microballoons,0-20% by weight of glass microballoons,4-10% by weight of glass fibers,25-45% by weight of an epoxy-modified polyurethane resin,2-4% by weight of a bentonite dispersing aid and1-2% by weight of an alcohol activator for the bentonite;B. 1-10 parts by weight of an aromatic amine curing agent; andC. 200-400 parts by weight of a solvent.

Abstract: A CW radar transmitter is simultaneously frequency modulated with a sinusal wave and phase-modulated with a pseudorandom binary code. Both the frequency of the FM signal and the bits and bit duration in the binary code can be varied to change the resolution and range of the system.

Abstract: An instrument for measuring various and sundry parameters that are analog to the aberrations that may exist in holographic lenses and other energy diffraction apparatus is disclosed as containing: a laser energy source; a pair of masks for controlling precisely the path of the light from said laser energy source, so that it may be used as a reference parameter; a rotatable mounting table for holding the holographic lens being tested in an appropriate position in the path of said reference laser light path; a microscope positioned to receive predetermined laser light rays that have been diffracted by the holographic lens being tested; indicia to measure the X, Y and Z axes distances between that point on the holographic lens being tested where the aforesaid laser light path passes therethrough and a given point position on or with respect to said microscope; and a support bench upon which all of the aforesaid elements may be mounted, so that their respective relative positions may be controlled in such manner

Abstract: Atomic hydrogen, for use as a fuel or as an explosive, is stored in the presence of a strong magnetic field in exfoliated layered compounds such as molybdenum disulfide or an elemental layer material such as graphite. The compound is maintained at liquid helium temperatures and the atomic hydrogen is collected on the surfaces of the layered compound which are exposed during delamination (exfoliation). The strong magnetic field and the low temperature combine to prevent the atoms of hydrogen from recombining to form molecules.

Abstract: An energy storage device comprises a flywheel rotor in the form of a spokeless ring of filamentary, composite material rotating around a ring-shaped stator. Along the inner rim of the rotor, there is a layer of magnetically soft iron that forms homopolar, salient pole pairs. An ironless armature winding mounted on the stator extends into an air gap formed between the pole pairs. To bring the rotor up to speed, alternating current is supplied to the armature winding using electronic commutation. The armature current interacts with flux in the air gap to create a force acting to rotate the rotor. During coast down, current may be tapped from the rotor using commutation diodes. The rotor and stator are maintained in axial alignment to each other by magnetic flux produced by a permanent magnet in the stator. An electromagnet incorporated in the stator modulates permanent magnet flux to compensate for any eccentricity between the stator and the rotor that may develop during rotation.

Abstract: Low-cost polycrystalline silicon solar cells supported on substrates are prepared by depositing successive layers of polycrystalline silicon containing appropriate dopants over supporting substrates of a member selected from the group consisting of metallurgical-grade polycrystalline silicon, graphite and steel coated with a diffusion barrier of silica, borosilicate, phosphosilicate, or mixtures thereof such that p-n junction devices are formed which effectively convert solar energy to electrical energy. To improve the conversion efficiency of the polycrystalline silicon solar cells, the crystallite size in the silicon is substantially increased by melting and solidifying a base layer of polycrystalline silicon before depositing the layers which form the p-n junction.

Abstract: A transport system for fragile instruments such as the motion sensors used n aircraft flight controls which are very susceptible to damage during handling, shipment and installation is provided. Individual sensors are mounted on a plate that is suspended inside the permanent housing of the equipment by springs which act as shock-vibration insulators. The housing is spring-isolated in an outer casing for transport, and the plate is permanently secured to the housing at the installation site simply by tightening bolts which extend through the housing.

Abstract: A microwave cross-over switch comprising first and second D.C. bias sources nd a diode network for switching first and second microwave signals to first or second output ports in response to the mode of operation of the first and the second D.C. bias sources.

Abstract: An offset FED magnetic microstrip dipole antenna consisting of a thin eleically conducting, element formed on one surface of a dielectric substrate, the ground plane being on the opposite surface with the radiating element shorted to the ground plane. The length of the element determines the resonant frequency. The feed point is located along one edge of the antenna length and the input impedance can be varied by moving the feed point along the edge of the antenna to obtain optimum match for the resonant mode without affecting the radiation pattern. The antenna bandwidth increases with the width of the element and spacing between the element and ground plane.

Abstract: Under influence of positive and negative aerodynamic action imposed on a conic surface, airborne fibers and tufts are compelled to disperse approximately 360.degree. and to enter the rotor of an open-end yarn spinner device, peripherally, thereby minimizing identifiable yarn imperfections and inefficiencies attributive to open-end yarn formation.

Abstract: A pteridine compound having the formula of 6-(bromomethyl)-2,4-diaminopteridine hydrobromide. 2,4-diamino-6-pteridine-methanol.HBr is reacted with triphenylphosphine dibromide or phosphorus tribromide to form 6-(bromomethyl)-2,4-diaminopteridine hydrobromide. The bromine atom in the molecule can then be replaced with the functional group, N-[4-(methylamino)-benzoyl]-L-glutamic acid in the case of methotrexate and N-(4-aminobenzoyl)-L-glutamic acid in the case of aminopterin.