Abstract: A portable machine is provided for in-place grinding of an inside ellipti face of an elliptical boiler manhole access with a grinder which has a flat grinding surface. The boiler manhole access also has an outside elliptical face and a conforming elliptical edge therebetween. The machine includes a supporting structure which is adapted to be fixedly mounted in the manhole access and span the elliptical inside edge. A spindle is rotatably mounted on the support structure with its longitudinal axis substantially coextensive with the longitudinal axis of the manhole access. A sleeve is fixedly mounted to one end of the spindle in a direction perpendicular thereto, and an elongated hollow slide means is slidably mounted on the sleeve. The slide and the sleeve are in gas communication with one another so that when gas pressure is applied thereto the slide is outwardly spring biased from the spindle. The grinder is mounted to the slide with the grinding surface engageable with the inside elliptical face.

Abstract: An expendable sound source provides a cost effective projection of acoustic nergies in the ocean. A tubular housing contains a d.c. motor that locates its shaft coaxial with the housing. Cylindrically-shaped camming blocks engage spurs in a pair of rigid pistons at both ends of the tubular housing to reciprocate them in accordance with the pattern of the camming surfaces and the motor speed. A flywheel on the shafts and journaling supports assure the projection of arbitrary waveforms and a key-and-keyway cooperation between the housing and prevents the pistons turning in the housings. A self-contained, high energy battery pack is actuated by magnetic reed switch to assure reliable long term projection after deployment. Pressure compensation can be included.

Abstract: An apparatus and method for spraying molten metal that is light weight, requires low maintenance and is quick and simple to operate. A feed system is provided that uses an electric motor and control system to push the electrodes to the head and to prevent system failure, by temporarily stopping the feed, upon the occurrence of the feed wires becoming shorted or welded together. A portable head is provided that employs parallel lead guides that allows complete head manipulation without electrode mismatch. An atomizing gas nozzle is also provided that permits lower air pressure and compensates for arc wander. A lead system is provided that combines into one lead the feed wire guides, current leads and the atomizing gas. The atomizing gas also becomes a coolant allowing lighter current leads for arc metal spraying.

Abstract: Rail interlocking and hoist stop apparatus for material handling systems of he type wherein a hoist travels between a movable rail and a stationary rail comprising a master stop assembly located on the movable rail and a slave stop assembly located on the stationary rail. The apparatus is manually actuated through a mechanical linkage which pushes a master pin in the master stop assembly toward the slave stop assembly. If the rails are in proper alignment, the end of the master pin is inserted into a bore in the slave assembly where it displaces a slave pin. The movement of the slave pin causes a crossover pin in the slave assembly to be partially inserted into a bore in the master assembly where it displaces a locking pin. The movement of the slave pin and the crossover pin in the slave assembly is rigidly coupled to stop pins located in the slave assembly and which are disposed in the path of the hoist when the stop system is unactuated.

Abstract: A hydraulically actuated fast action gate valve for gating highly viscous uids in a salt water environment includes front and back plates having openings for connection to conduits containing the viscous fluid and a center plate having a slot for receiving a slidable gate that includes an optional check valve. A gate is positioned within the slot and includes upper and lower grooves that provide rapid equalization of pressure of the viscous fluid between the opposite ends of the gate when the gate is rapidly actuated. One end of the gate is connected by a locking pin to an actuating rod that is driven by a hydraulic cylinder that is mounted external to the valve. The front and back plates have opposing passages allowing the actuating rod to be secured to the gate so that the hydraulic cylinder may be removed. An optional opening is provided in the back plate to permit the introduction of a non-gated fluid into piping contained within the inlet conduit.

Abstract: A shipboard engine system and method of operating includes two compressors with an intercooler, a compressor turbine, a power turbine, a combustor for combining fuel, air and water. Heat exchangers remove heat from the exhaust and use it to preheat the water to the combustor. Spray condensers recover water from the exhaust for reuse. Water purification apparatus is used to remove acid from the water. The system is designed for stoichiometric operation at full load and run with increased efficiency at part load to give a total lower fuel consumption.

Abstract: A socket wire connector for effecting a high-voltage, gas-tight joint betn an electrical wire and the connector. The socket side of the connector has a hemispherical portion soldered to one side of an electrical breadboard with a tapered, slotted cylindrical piece extending through the breadboard. An electrical wire may be inserted in the socket portion and the cap nut portion of the connector screwed onto the cylindrical piece to form a high-voltage gas-tight joint.

Abstract: An inside collet assembly for positioning an IMPATT diode precisely axially long and coaxially of a cylindrical cavity. The assembly serves for convenient removal and repositioning of the diode within the cavity and provides effective electrical and thermal connection to the diode. The assembly is not significantly larger in diameter than the cavity and does not require surfaces producing undesired reflections of microwaves within the cavity.

Abstract: A novel explosive compound, 1,4,5,8-tetranitro-1,4,5,8-tetraazadifurazano[3,4-c][3,4-h]decalin is prepared by the reaction of 3,4-diaminofurazan and glyoxal in dilute hydrochloric acid, followed by the nitration of the intermediate 1,4,5,8-tetraazadifurazano[3,4-c][3,4-h]decalin. The nitrated compound has a higher density and detonation pressure and velocity than the known explosives HMX and HNB.

Abstract: A sphere with a hole through one diameter is held in a spherical chamber hin a tube. The axis of the tube and the hole through the sphere are out of alignment by some predetermined angle, .theta.. The sphere is held within the chamber and the entire unit is caused to spin. The sphere is released while the unit is still spinning. The gyroscopic nutation of the sphere causes the spherical bore to traverse the angle .theta. and align with the tubular bore in a time dependent upon the sliding friction between the material of the sphere and the material of the spherical chamber.

Abstract: Apparatus for seating a very small socket contact in an electrical connector from the front side of the connector. Opposing flexible fingers, which are disposed above and below a flat wedge member and separated thereby, are extended longitudinally by plunger action beyond the wedge member which is fixed relative to the tool housing. The opposing fingers have a bend which causes their ends to come together when the fingers are extended relative to the wedge. The extended fingers and the wedge may freely be inserted into an individual socket contact from the front of the connector. Retraction of the fingers by spring bias causes the wedge to separate the ends of fingers so that knuckles at the ends of the fingers internally grasp the socket contact which may then be pulled for proper seating.

Abstract: Mastless sails for a boat or ship which comprise sails having capability for utilizing static and dynamic lift in combination with drag, gravity, and line tension to provide stability and propulsion forces for the boat or ship, communication capability located near said sails when aloft for use for said boat or ship, sensing capability located near said sails when aloft for use by said boat or ship, and apparatus for raising and lowering the communication and sensing apparatus.

Abstract: A deep depth underwater simulator is illustrated for determining the dual effects of nuclear type underwater explosion shockwaves and hydrostatic pressures on a test vessel while simulating, hydrostatically, that the test vessel is located at deep depths. The test vessel is positioned within a specially designed pressure vessel followed by pressurizing a fluid contained between the test and pressure vessels. The pressure vessel, with the test vessel suspended therein, is then placed in a body of water at a relatively shallow depth, and an explosive charge is detonated at a predetermined distance from the pressure vessel. The resulting shockwave is transmitted through the pressure vessel wall so that the shockwave impinging on the test vessel is representative of nuclear type explosive shockwaves transmitted to an underwater structure at great depths.

Abstract: An improved, controlled automatic light control device is provided by the e of a hydraulic automatic light control. Hydraulic control avoids inherent problems of mechanical automatic light control devices. A liquid used for light absorption permits the entire iris area to darken without loss of aperture. The uniform extinction without diffraction limitations of mechanically driven automatic light control devices is significantly improved. The use of thermoelectric coolers and heat sinks provides reliability in a large dynamic range environment without warping or other distortion of the system. The device is applicable for visible light to near infrared light.

Abstract: A shaker for performing both absolute and comparison accelerometer calibration. A reference accelerometer is mounted within or attached to a shaker head and calibrated with the shaker head by an absolute method. The shaker, thus calibrated absolutely, becomes a portable device for performing comparison calibrations on other accelerators which can be mounted on its shaker head.

Abstract: A device is described using at least one polyconductor film as an active ment lens of an electrical circuit for detecting incident laser radiation. In several alternative embodiments, a polyconductor film is located at the focal point of at least one lens which focuses the incident laser radiation on the film. The polyconducting film acts as a variable resistor of a balanced bridge network and upon receipt of radiation causes an imbalance in the bridge for radiation detection. The film changes phase with increasing incident power such that it protects itself against high levels of radiation. The lenses can also be polyconducting films and another film shielded from the radiation may be included to compensate for temperature fluctuations and maintain circuit sensitivity.

Abstract: A shaft seal that is slidably mounted in a housing with essentially equal balanced forces acting on each radial side. Fluid from the high pressure side of the shaft is communicated to equal areas on the two sides by ducts and constrained to the design areas by "O" rings. The seal moves radially in response to shaft displacements while maintaining a sealing relationship between packing material and the shaft.

Abstract: A mechanism for distributing axial thrust loads acting on a rotating shaft, ncluding dual thrust bearing assemblies concentrically mounted on the rotating shaft for transmitting axial thrust loads to the thrust load distributing mechanism. The thrust load distributing mechanism includes a stationary support member having at least one fulcrum to provide a reaction force to counterbalance the axial thrust loads acting on the rotating shaft, an annular load lever cooperating with each of the at least one fulcrum, at least two thrust transfer members cooperating with first and second segments on the annular load lever and the dual thrust bearing assemblies, and a force transmitting means.

Abstract: The invention is a safety circuit for torpedoes which causes lead weights be ejected when the torpedo is not running and is below a predetermined depth. It uses a CMOS multivibrator and NAND gates to pulse power to the existing pressure transducer and a comparator. This comparator checks depth and alternator power. When conditions are met, it holds power on and after five seconds, causes the weights to be dropped.The circuit is powered by existing batteries in the torpedo exercise head. To minimize any effect on the battery life, a strobbing technique is used where voltage is switched on for only a few milliseconds once every ten seconds. Depth is checked by the use of the comparator. One comparator input is connected to the torpedo's depth transducer and the other to a reference voltage in accordance with the predetermined depth limit. When the transducer voltage exceeds the reference voltage, the comparator turns on.One output from the comparator then latches-on for as long as the comparator is on.

Abstract: A controller for a locked carrier distributed multiplexed telemetry system hich uses on-off switching of a d.c. power supply and a pilot signal generator at a remote control unit. A pilot signal from the remote control unit is amplified and rectified. The d.c. rectifier output, occurring only during the presence of the pilot signal, is sensed by a comparator which provides rapid transition pulses to advance a counter. The counter is advanced one count for each pilot signal cycle (on-off-on) and is reset for each d.c. power supply cycle (on-off-on). The devices to be controlled are connected to the output of the counter.