Abstract: To quench hot coke it is delivered to the surface of water in a tank, where the coke floats. The coke is carried along the surface of the water until it becomes saturated and sinks, whereupon it is removed from the tank. The water adhering to the removed coke is allowed to evaporate.

Abstract: A game caller is shown including a diaphragm assembly that is vibrated in opposite directions by rapid bursts of air from a bellows. The only opening in the bellows is tubular and it is attached to one end of an elongated tubular housing where an end cap holds the diaphragm assembly onto the housing. The free end of the tubular housing permanently carries a cone-shaped megaphone forming a sound amplifier. A tubular cloth case has one end secured to the outer surface of the housing and the other end has a sewed pocket containing a drawstring. The case is utilized as a container for the bellows in a collapsed state for transporting the game caller. To prevent inadvertant operation, the closed end of the bellows may have an exhaust opening that is to be blocked during operation of the caller.

Abstract: The viewing window at the front of a breathing mask is held in a groove in a flexible frame that is clamped in a ring formed from two channel-shape half rings engaging each other at their ends and having on the outside of their end portions pairs of laterally projecting vertical flanges so that those end portions are H-shaped in cross section. Each pair of the engaging ends of the half rings is provided with a guide member projecting vertically from one of the half rings into the space between the flanges of the other half ring, and a bolt is rotatably disposed in a cross member between the flanges of the other half ring. The bolt extends through the adjacent guide member and has a nut on its end so that the ends of each half ring can be drawn into contact with the ends of the other half ring to hold the half rings together. The inner surfaces of the side walls of the half rings beside the bolts may diverge toward the ends of the rings.

Abstract: A gutter system for a swimming pool of the type having side walls and a gutter extending along the top of the side walls around the periphery of the swimming pool, characterized in that the gutter is formed from integral sections molded from non-metallic material and joined end-to-end by flexible, water-tight gaskets. Each integral gutter section has a front wall facing the swimming pool, a bottom wall resting on the top of the side walls of the swimming pool, and a back wall which preferably has a vertical extension thereon rising above the gutter and forming a break-water between the gutter and an elevated concrete deck. Slotted, removable cover sections are fitted over the gutter and extend between the upper edge of the front wall of the gutter and an integral flange formed on the back wall of the gutter.

Abstract: 1. A method of inducing rapid failure in a shape that is under stress and is composed of cold rolled steel comprising applying against a surface of said cold rolled steel shape a mixture composed of lithium metal, lithium chloride and potassium chloride, rapidly heating that mixture as well as the surface of the steel shape in contact therewith sufficiently to melt the mixture but below the annealing temperature of the steel, and maintaining that temperature until the steel shape cracks.

Abstract: In a horizontal coke oven, the regenerators therefor include columns of superimposed checkerbricks supported at their lower ends on horizontal partitions forming stationary ports that conduct gaseous media between an underlying sole flue and the various sections of the regenerator. Movable plates with portal openings contiguous with the stationary ports are adjustable in the direction of the length of the sole flues for determining the extent to which the stationary ports are masked by the plate. Grooves are formed at the underside of the stationary ports for guiding the side edges of the movable plates. Pegs extend from the lower surface of the plates. In one embodiment, trough-shaped support members in the sole flue carry an adjusting rod that extends along the flue from the coke discharge side of the oven. Fingers extend radially from the rod to engage the pegs to move the plates in an adjustable manner.

Abstract: This disclosure relates to a mining machine of the type having a driven winch which has its drive output sprocket engaging a displaced portion of a chain which normally extends along the entire length of the mine face. The displacement portion of the chain occurs between guide rollers on the mining machine. The chain is secured by a plurality of holding devices such as catches clamps or locking devices which are distributed at closely, spaced-apart locations along the length of the chain. As the mining machine propels itself along the chain, the guide roller or an associated member at the forward end of the mining machine releasably retain the chain in the holding devices until the chain is deflected toward the drive output sprocket of the winch. A guide roller or an associated member at the trailing end of the mining machine engage again the returned portion of the chain with the holding device as the chain is passed from the drive output sprocket.

Abstract: An electrostatic dust filter is provided for collecting electrically-charged dust particles which are deposited on fabric filter elements in an electric field so that the particles deposit in porous layers. The dust particles are charged in a manner to provide a mixture of particles charged with opposite polarities, and adjacent filter members are maintained at opposite polarities. Unidirectional electric fields thus exist between adjacent filter elements and the dust particles deposit on one or the other filter element according to their polarity. A relatively simple structure is provided which requires no separate electrodes to maintain the electric field.

Abstract: A battery of horizontal coke ovens having intermediate walls that divide the ovens into units each consisting of 10-20 oven chambers for the purpose of receiving coal from a charging car displaceable above each unit of oven chambers. The charging car includes a plurality of bins each having an outlet for alignment with one of a plurality of charging holes provided in the roof for each oven chamber. The charging car is transversed along a frame supported by vertical beams extending from the intermediate walls. A conveyor belt is employed to transport coal from a tower to the charging car.

Abstract: Mixtures of nematic-phase liquid-crystal materials that contain a sufficient amount of p-cyanobenzal-p'-n-butylaniline or the like, possibly together with other materials, will exhibit the nematic phase at about room temperature and over a considerable temperature range above and below, and at the same time, a positive dielectric anisotropy. This enables the production of a liquid-crystal unit comprising first and second pieces of flat glass, each coated on one side with a transparent electroconductive oxide coating and each having its so-coated surface rubbed with cotton cloth or the like in one direction, with the two surfaces so rubbed then being spaced about 1/4 to 2 mils apart and with the above-mentioned nematic-phase liquid-crystal material in between, and with the directions of rubbing being oriented substantially perpendicular to each other.

Abstract: A control system for hydrofoil craft is one in which control surfaces are moved automatically in response to signals derived from the motion of the craft to stabilize and control the craft. In such systems, a potentially dangerous condition can occur in case of a failure or malfunction in the roll control system. In order to prevent such conditions, two roll sensing devices are provided which normally generate identical signals to actuate the control surfaces to stabilize the rolling motion. In case a failure or malfunction, the signals provided by the two sensing devices become different and apparatus is provided to compare these signals and to respond to a difference in the signals to initiate landing of the craft rapidly and safely.

Abstract: All of a predetermined number of original air purifying air-oxygen generating canister units have a useful life of substantially the same number of hours. Each unit is designed to generate oxygen at an initial rate of at least half of what is required to support life in a closed chamber in which the canisters are to be used, but at a rate less than required. First, two of the canister units are inserted together in an air-circulating system in the chamber and then the remaining canister units are connected in the system in succession at time intervals substantially equal to said number of hours divided by the number of original canister units. One of the two original units is replaced by a replacement unit at a time before the expiration of said number of hours substantially equal to one of said time intervals. Each of the remaining original units in succession then is replaced by a replacement unit at substantially regular intervals just before the expiration of the life of the unit being replaced.

Abstract: A shallow cup has a central inlet opening in its base and a filter disc closing its open end, whereby a hollow capsule is formed. A barrier member inside the cup is located between its base and the filter and has a central portion spaced from the filter and the cup inlet. This central portion is provided with holes around a solid central area that has a diameter at least as great as the inlet opening. A separable two-part cassette contains the capsule with its marginal area clamped between the two parts. The part containing the cup is provided with a central inlet port in an end wall spaced from the capsule, and the other part of the cassette covers the filter and is provided with an outlet port. Between the capsule and inlet port in the cassette there is a baffle that causes nonrespirable particles in the incoming air to be trapped before they can reach the capsule.

Abstract: A housing that is continuously rotatable on a vertical axis has an opening in its bottom and contains a central vertical shaft rotatable a limited number of degrees relative to the housing. This shaft is connected through the housing opening with a chuck that contains means for gripping a screw cap to screw it onto a container. Valve means connect a source of air pressure with the gripping means to cause such means to grip a screw cap. Secured to the housing is a valve member provided with a bleed passage through it, the inlet of which is connected with the air pressure source and the outlet of which normally is closed by a closure member. Projecting from the side of the shaft is a torque arm that is pressed by compressible means carried by the housing to cause stop means projecting from the side of the shaft to move the closure member away from the bleed passage a certain distance.

Abstract: Alloy for carburized bearing members intended to be used at operating temperatures up to 1000.degree.F, characterized in having the ability to achieve and retain high surface hardness after carburization coupled with good hot-workability which enables billets formed from the alloy to be pierced in a seamless tube-forming operation. Also described is the method for heat treating such an alloy to achieve the desired surface hardness, on the order of Rockwell C58 and higher. The alloy contains, as essential constituents, 0.1 to 0.3% carbon, 0.2 to 1% manganese, 0.2 to 0.6% silicon, from an effective amount up to 1.2% chromium, 2.5 to 3.5% nickel, 4 to 6% molybdenum and 0.25 to 0.85% vanadium.

Abstract: Extending downwardly from a guide rod above the rear end of a cutting table that supports a continuously cast metal strand as it travels forward over the table are a torch arm and a feeler arm, the upper ends of which are slidably and rotatably mounted on the rod to permit their lower ends to be swung transversely of the table independently of each other. A cutting torch secured to the torch arm is directed downwardly from it, and the feeler arm extends below the torch for engaging one side of a metal strand on the table. The feeler arm carries means for engaging the torch arm to position the lower end of the torch over the upper edge of the same side of a strand that the feeler arm is engaging. Located forward of the guide rod is a stop for engagement by the leading end of the strand for movement forward with it.

Abstract: The gasification of solid fuels or mixtures of solid and liquid fuels takes place in a cylindrically-shaped pressure reactor vessel having feed jets at the top of the vessel for introducing the fuel and the gasification medium into the vessel. A ring-shaped chamber containing a bath of molten iron surrounds a gas discharge pipe within the lower portion of the vessel. A water bath is established below the lower rim of the discharge pipe in the vessel and pipe means passing through the side wall of the vessel at an elevation above the lower rim of the discharge pipe and below the ring-shaped chamber discharge the gases liberated within the vessel. Reactor means are provided for utilizing the residual heat of the gases passing from the vessel. In one embodiment, the reactor means comprise a fluidized bed chamber into which coal and steam are injected to utilize the residual heat of the gases.

Abstract: Charging apparatus is provided for charging preheated coal into a battery of coke oven chambers from a bunker above the battery which has sufficient capacity to contain enough coal to charge at least one oven chamber. Each oven chamber has a plurality of charging holes in the roof and the charging holes of the several chambers are arranged in rows extending longitudinally of the battery. A vibratory conveyor is associated with each row of charging holes for selectively delivering coal to the holes, and coal is supplied from the bunker to each conveyor through a measuring chamber which holds a predetermined amount of coal and delivers exactly the right amount to the conveyor for charging one oven chamber.

Abstract: Coke oven gases are washed with an aqueous metallic salt solution of sulfuric acid or sulfurous acid to absorb ammonia, hydrogen sulfide and hydrogen cyanide. The washing solution is then oxidized to recover elementary sulfur. A portion of the oxidized washing fluid is returned for continued washing of gas and a portion of the washing fluid is diverted to a separater where solid compounds which include metal hydroxide and metal cyanide compounds are removed leaving ammonium sulfate solution. The ammonium sulfate solution is heated with combustion air and in a heating agent to produce combustion products including nitrogen, hydrogen and an acid anhydride. The solid compounds from separater are conducted as a aqueous suspension to a reaction vessel wherein, at elevated temperature and pressure, hydrolysis products are formed including free ammonia, metal hydroxide and formate salts.

Abstract: A rotary engine has a housing in which a rotor is driven by the combustion of fuel. The side wall of the housing extending around the rotor is composed of graphite throughout its thickness and preferably reinforced by a wrapping of graphite fiber tape.