Abstract: A closure and valve for liquid containers comprises a valve body and a plug body insertable and rotatable therein. Discs are seated within the valve body which have off-center holes which are aligned or misaligned by stems depending from the bottom edge of the plug and which register with notches in the edges of the disc. A non-rotating disc having corresponding off-center holes is placed between the rotating discs. The valve is opened and closed by rotating the plug, after placement in the valve body, which rotates the rotatable discs with respect to the fixed disc.

Abstract: A modified rotary kiln suitable for calcining normally solid carbonaceous material, having adapted thereto at one end a firing crown and means for admitting combustible gases or liquids and air; a feeding means for such solid carbonaceous material to be calcined adapted to the other end of the kiln; and wherein the combustion gases and solid materials travel countercurrently in the kiln during calcination, wherein: at least one series of at least two tuyeres passes through the wall of the kiln symmetrically spaced to and at about a point longitudinally in the middle one-half of the longitudinal axis of the kiln; each tuyere terminating within the kiln through a nozzle on the side of the tuyere at a height sufficient for the discharge of exterior oxidizing gases passing therethrough at a point above the bed of the carbonaceous material in the kiln, directing the exterior oxidizing gases toward the feed end at about the same acute angular direction from a line passing through the nozzle and parallel to the long

Abstract: A method for manufacturing carbon-carbon composite bodies consisting essentially exclusively of carbon, of about 20 to about 96 weight percent from carbon fiber, from 0 to about 72 weight percent from a carbonaceous flour, and from about 4 to about 15 weight percent from a carbonized resin, which consists in forming a mat by allowing a mixture of the solid ingredients to settle to equilibrium height by the force of gravity or by centrifugation in a solution of the resin and an appropriate solvent, then pressing the settled solids at up to about 100 psi and removing the excess liquid therefrom. Heating the formed and pressed mat to cure the resin, and then baking and optionally graphitizing the cured mat completes the process.

Abstract: Method and apparatus for determining the machinability and/or the friction factor and relative roughness of holes in solid bodies, particularly of holes in bodies of refractory composition, such as of graphite, are described.One objective in the design and processing of graphite, such as is used in a nuclear reactor core, is the optimization of the pressure drop through the coolant channels or holes in said core. In many instances, frictional head losses provide the chief contribution to a given pressure drop. Among other objectives, the present invention is designed to permit ready measurement as to when optimization of pressure drop through such holes has been achieved, and to thereby also indirectly provide a means or monitoring device for ascertaining the best drilling parameters and/or processing conditions to be used in producing said graphite core.

Abstract: A method of and apparatus for sealing porous material defining a recess therein by placing sealing liquid in the recess, inserting a tubular means therein, pressure sealing said means with respect to the recess and forcing said sealing liquid into the pores by a gaseous pressure applied through said tubular means.

Abstract: A method of cooling a hot particulate material, such as calcined petroleum coke, is described.The stream of hot particulate material is split as it leaves the device or calciner in which it has been heated. A major portion of it, such as about 80-90%, is dropped directly into a tank of hot water. This material is then separated from the hot water while simultaneously being transferred to a cooling device (such as a rotary cooler) by a suitable conveyor system. The minor portion of hot material is transferred directly from the calciner to the cooling device. In the cooling device, the residual heat content in this hot, minor portion of particulate material is used to drive off the remaining water or moisture contained in the quenched major portion of material.