Abstract: A secondary insulating barrier for protecting the hold of a ship below a spherical low temperature liquified gas storage tank installed therein comprises at least two layers of rigid foam synthetic resin sprayed on the hold plates and covered by a layer of glass mesh and adhesive. Alternatively, the layers of synthetic resin, glass mesh and adhesive are applied to plywood attached to the hold plates by joists, thus forming an air space between the secondary barrier and the hold plates. Where the hold plates have a multi-surface construction, laminated rigid urethane foam blocks are butted end-to-end and are bonded to each other and to the plywood sheets at the corners between adjacent hold plates, the spray-formed layers are applied between the blocks, and the whole is covered by a protective layer of glass mesh and adhesive.

Abstract: A heat insulating construction for the outer wall of a low temperature liquified gas storage tank comprising a number of blocks or plates of rigid foam insulating material bonded to the outer wall, with seats for receiving pressing jigs for the bonding operation secured to the outer wall in the joints between the insulating blocks. The joints are filled with soft synthetic foam, embedding the seats therein, a moisture-proof layer covers the insulating blocks and joints, and a water-proof material covers the moisture-proof layer.

Abstract: An apparatus for incinerating a waste gas comprises a combustion furnace main body having a peripheral wall and a hearth and a plurality of flare burners disposed on the hearth. Each of the flare burners includes a burner main body having a peripheral wall and a bottom wall, a waste gas main pipe provided under the burner main body, water gas branch pipes extending upward from the waste gas main pipe and each having a vertical zigzag passage in an intermediate portion thereof, gas nozzles mounted in the upper ends of the waste gas branch pipes respectively and positioned inside the peripheral wall of the burner main body, a steam main pipe extending through the waste gas main pipe and projecting upward through the bottom wall of the burner main body, steam branch pipes extending upward from the steam main pipe, and steam nozzles mounted on the upper ends of the steam branch pipes respectively and positioned close to the gas nozzles.

Abstract: A support device for an independent tank, wherein a first support member secured to the tank is adapted to be supported on the top surface of a second support member attached to a ship's hold. Particularly in the case of a spherical tank, a horizontal ring projecting from adjacent the equator of the spherical tank is adapted to be supported on a support deck installed around the inner periphery of a ship's hold, with a pressure-resistant heat insulating material interposed between the ring and the support deck. In such support device, an anti-floating member is provided on and projects from either the first support member or the second support member through the other member without touching the same. When the tank tends to float up, the free end of the anti-floating member and the mating member engage each other with the pressure-resistant heat insulating material interposed therebetween, thereby preventing the floating up of the tank.

Abstract: With a storage tank temporarily held in the correct position, an abutment plate is applied to the lower surface of each of support chocks projecting from a plurality of places circumferentially of the storage tank toward a support deck and in this condition such adjusting plates are temporarily fixed at the support deck as by bolts. A molding flask for preventing the outflow of resin material is placed to surround each abutment plate. Subsequently, a liquid resin material which, upon setting, becomes resistant to pressure and low temperature is poured into a space surrounded with the molding flask between the abutment plate and the support deck. After the resin has set, the storage tank is in the correctly installed condition supported by a support block formed of the resin. The upper surface of the support block serves as a slide surface provided by the abutment plate.

Abstract: This invention provides arc welding methods and arc welding apparatus which weld materials by giving a plastic deformation of definite curvature to wire itself in a process before supplying the wire to a welding nozzle, restoring the wire delivered from the welding nozzle to the plastic deformation of definite curvature, delivering rotatively the end of the wire in a definite period from a delivery hole of the welding nozzle in butt welding of thick board, especially narrow gap welding.

Abstract: An apparatus for incinerating a waste gas comprises a combustion furnace main body having a peripheral wall and a hearth and a plurality of flare burners disposed on the hearth. Each of the flare burners including a burner main body having a peripheral wall and a bottom wall, at least one of the walls of the burner main body being formed with air intakes, an inwardly projecting flange provided on an upper portion of the peripheral wall of the burner main body, gas-air mixture tubes downwardly extending through the flange and arranged at a given spacing, a waste gas main pipe disposed under the burner main body, waste gas branch pipes extending upward from the waste gas main pipe, and gas nozzles mounted on the upper ends of the waste gas branch pipes respectively and positioned at the lower ends of the gas-air mixture tubes. The waste gas forced out from the nozzles ascends the interior of the mixture tubes along with the surrounding air and the gas-air mixture jets out from the tubes.

Abstract: A temperature differential power plant is combined with a nuclear power plant and employs the temperature differential between hot water discharged from cooling the nuclear reactor, steam obtained from the nuclear reactor, and cold water taken in from an outside source such as the sea. The generated output and thermal efficiency of the entire power equipment is thereby increased; the temperature of the hot water discharged from cooling the nuclear reactor is decreased to aid in the recirculation thereof and eliminate hot water pollution; and, only the cold water taken in is discharged with its temperature being controllable so as not to create a cold water pollution problem. Temperature differential power plants can be used in stages with the hot water discharged from cooling the nuclear reactor passing successively from one stage to the next.

Abstract: A denitrating catalyst is produced by plating the surface of unactivated metal with aluminum and immersing the resulting layered product in an aqueous aluminum-dissolving solution to dissolve out the aluminum into the aqueous solution and to thereby activate the surface of the metal.

Abstract: High-pressure gas generating apparatus includes a gas generator body provided with a combustion chamber. The gas generator body has a primary propellant injector including orifices for injecting a primary fuel and orifices for injecting a primary oxidizing agent, both the orifices being open to the combustion chamber, an igniter for igniting the primary fuel forced out from the injector, and valve means having a secondary fuel injecting orifice for injecting a metal fuel into a high-temperature gas atmosphere to be reacted therewith and containing a secondary oxidizing agent produced by the reaction of the primary fuel injected from the primary propellant injector with the primary oxidizing agent similarly injected.

Abstract: Nitrogen oxides in an exhaust gas are selectively removable by employing ammonia as a reductant and by employing a catalyst composed of alumina, copper, and at least one of the alkali metals, the alkaline earth metals and the transition metals. Optionally, the catalyst composition may include a slight amount (less than 1% by weight) of a precious metal such as rhodium, ruthenium, plantinum and palladium. This selective removal of nitrogen oxides is not impaired by the presence of O.sub.2, H.sub.2 O and SO.sub.2 in the exhaust gas.

Abstract: A low temperature liquified gas storage tank is supported in the hull of a ship by a plurality of chocks secured to and spaced peripherally around the tank and by chock engaging members carried by the ship's hull. Pressure resistant heat insulating pads disposed between the chocks and the chock engaging members are arranged to provide sliding surfaces which support the tank horizontally and vertically and permit thermal contracting and expanding movements of the tank relative to the ship's hull and which compensate for thermal expansion and contraction of the chocks and the chock engaging members.

Abstract: High-pressure gas generating apparatus includes a combustion chamber and a water jacket surrounding the combustion chamber. A metal fuel injecting nozzle is disposed in the center of one end of the combustion chamber. The water in the jacket is injected into the combustion chamber in the form of a swirling stream around the fuel injected from the nozzle.

Abstract: High-pressure gas generating apparatus includes a combustion engine and a metal fuel storage chamber surrounding the combustion chamber. The combustion chamber has at its one end a metal fuel injecting orifice and water injecting orifices. The fuel injecting orifice communicates with the fuel storage chamber, and the water injecting orifices communicate with a water heating tube extending helically in the interior of the combustion chamber.

Abstract: A mold for continuous casting made of a copper alloy having been subjected to 15 to 40% cold working, said alloy consisting of copper as main constituent and an addition of 0.18 to 0.85% by weight of tin, and, if desired, several other metal components, the alloy having a high softening temperature and high-temperature strength, whose numerical values are given by specific formulas in which the thermal conductivity .lambda. is a determining factor which, in itself, is dependent on the construction of the mold, operating conditions etc.

Abstract: A plurality of molds, each consisting of a pair of relatively movable mold halves, are mounted on a turntable equidistant from the center of turntable rotation, and are moved successively through a receiving sector where they engage and grip a workpiece such as a heated tube fed tangentially to the circular path of movement of the molds. Positioning pillars located on each side of a workpiece cutting device mounted between adjacent molds, engage the workpiece and correct the attitude thereof relative to each receiving mold and to each cutting device, which also is equipped with means for gripping the cut ends of the workpiece when each mold is opened at the end of the molding cycle.

Abstract: Method in which a metal fuel in the form of molten droplets is brought into contact with water for reaction. The fuel comprises aluminum as a primary fuel component and at least one of lithium, magnesium, sodium, potassium and sodium-potassium alloy as an auxiliary fuel component and is used in the form of an alloy or a mixture of these fuel components. When used in the form of an alloy, the fuel is preheated to a molten state and injected into a reactor under high pressure, whereby the fuel is made into droplets and contacted with water vapor introduced into the reactor from another system. For use as a mixture, the fuel is made into a slurry the liquid phase of which consists singly of the auxiliary fuel component, and the slurry is injected into an atmosphere containing water vapor.

Abstract: An apparatus for rotating bottles includes a circular turntable for transferring bottles from an inlet passage to an outlet passage along a circular arc. The bottles are maintained in position on the turntable by two pairs of superposed ratchet wheels which rotate with the turntable. A friction wheel is adapted to be brought into pressing contact with the body of a bottle on the turntable under the action of spring to rotate the bottle about its vertical axis. A cam causes the friction wheel to move at the same speed as the turntable through a specified angle of its rotation, following the rotation of the turntable, and to thereafter return to the original position. When returning to the original position, the friction wheel is moved away from the bottle by a hydraulic cylinder. While in pressing contact with the body of bottle, the friction wheel is rotated by a motor through an electromagnetic clutch.

Abstract: A laminated composite pipe is produced by employing a pre-formed pipe as a core and applying a layer of reinforcing fiber onto the outer surface of the pipe core which is being lowered vertically in the direction of its length through a hopper and a tubular outer mold. Resin supplied to the hopper is drawn into an annular space between the wound pipe and the outer mold and forms a layer on the wound pipe core. A flexible pipe may be used as the core, together with a resin that can be subsequently cured, thereby forming a flexible laminated composite pipe which can be covered with a parting tape, stored in reel form, and given a permanent set after installation by curing the resin. Depending upon the nature of the resin employed and upon the number of resin layers applied to the pipe core, reinforcing, insulating and stiffening properties, or any combination of such properties, may be imparted to the composite pipe.

Abstract: Exhaust gas cleaning catalysts are produced by alloying copper and aluminum with at least one of the elements, nickel and chromium, and eluting by alkali or acid means aluminum from the cooled alloy surface. Small amounts of other metals from the fourth or fifth period V.about. VIII groups, may be added to the catalysts by alloying, or by impregnation, for enhanced catalytic properties. The catalysts exhibit improved reduction of NO and oxidation of CO in an exhaust gas stream, in the presence of Pb, SO.sub.2, moisture and hydrocarbons (H.C) and at relatively low temperatures.