Abstract: A piston for an internal combustion engine having a double tapered top land to provide controlled variation in the clearance about the head of the piston. The controlled variation in clearance about the piston head provides a sufficiently sized orifice which prevents the formation of hard carbon and improves oil control without greatly increasing pollutants.

Abstract: A device for moving coke away from the coke guide and leveling coke in a one-spot quench car is disclosed. A plow is mounted on a coke guide car just below the exit end of the coke guide. The plow is connected to extension apparatus to project it outward from the coke guide, across the hopper of a one-spot quench car. As the one-spot quench car is being filled with coke, the plow is extended to push the coke away from the coke guide to provide additional space for more coke. When the one-spot quench car is filled, the plow is again extended to level the coke to enhance quenching operations. The plow is then retracted and the one-spot quench car is relocated.

Abstract: Disclosed herein is a piston ring for an internal combustion ring having its face plasma sprayed with a ceramic coating comprised of 40% by weight titanium dioxide and 60% by weight aluminum oxide. The ceramic coating material has a low coefficient of friction, high material integrity and superior wetting characteristics.

Abstract: In a machine for the manufacture of corrugated paper, apparatus is described for resiliently biasing the web guide means against the rolls of the corrugator as the corrugated web passes around the roll. In such apparatus a pair of spaced link bars are pivotally attached to a plate that is supported by the corrugator; the link bars also being pivotally connected to the guide means to provide a planar linkage. A ram attached to the plate and to one of the link bars resiliently urges the guide means toward the roll.

Abstract: The present invention is directed to copper arsenate compositions which are useful in preparing chromated copper arsenate wood preserving formulations. The copper arsenate compositions are slurries of insoluble copper arsenates in an aqueous solution of copper arsenates. The copper arsenate slurries have a mole ratio of As.sub.2 O.sub.5 to CuO of from about 0.3:1 to about 0.9:1 and are readily soluble in chromic acid to form chromated copper arsenate solutions. The copper arsenate slurries are prepared by reacting copper metal with arsenic acid in the presence of an acid catalyst and an oxidizing agent.

Abstract: An improved pressurized disc refiner having a pair of oppositely facing non rotating refiner plates and a rotating disc having refiner plates on each face thereof juxtaposed the non rotating refiner plates. The rotating refiner plates and at least one of the non rotating refiner plates are axially adjustable to compensate for wear and to insure that an equal and opposite thrust force is produced on opposite sides of the rotating refiner plates. During the plate changing operation, both of the non rotating refiner plates are independently movable axially along the drive shaft away from the rotating disc for simultaneous access to both of the non rotating refiner plates and both of the rotating refiner plates to facilitate changing of the refiner plates. The refiner has a split mechanical stop to limit movement of the axially adjustable non rotating refiner plates axially away from the rotating refiner plate during the refining operation of the apparatus.

Abstract: Thermoset epoxy foams are produced from an epoxy resin, delta-1-tetrahydrophthalic anhydride, and an amine accelerator. These compounds are mixed in resin-foaming amounts to produce a foamable mixture to which typical foam additives like auxiliary blowing agents, surfactants, microscopic spheres, etc., may also be added. This foamable mixture is heated at a temperature of at least 115.degree. C. to foam and cure the mixture to produce thermoset epoxy foams.

Abstract: Mono-substituted alkylresorcinol isomers, predominantly the 5-alkylresorcinol isomer, are produced by reacting resorcinol and an aliphatic alcohol having 1-3 carbon atoms in the vapor phase in the presence of an acidic catalyst and by separating the resulting mono-substituted alkylresorcinol isomers from other alkylated hydroxyaromatic compounds and unreacted resorcinol. The molar ratio of alcohol to resorcinol is in the range of greater than 1:1 to 3:1. The reaction time in a batch operation and the liquid hourly space velocity in a continuous operation are controlled so not to allow the mono-substituted alkylresorcinol to undergo further alkylation.

Abstract: An improved web guide structure of the self-adjusting type for a corrugated web single-facer machine including a plurality of laterally spaced guides for continuously and yieldably urging a corrugated medium web against a lower corrugator roller, a support rigidly mounted to the single-facer for pivotally supporting the guides, and a gravity-actuated and adjustable biasing means for urging the guides against the corrugated web at preselected pressures. The guides preferably include a trailing guide portion that remains in engagement with an adhesive applicator roll when the roll is moved out of engagement with the corrugated web to maintain alignment of the guides with the roll. Springs may also be used in conjunction with the support to apply greater or lesser pressure to all of the guides simultaneously.

Abstract: A machine for reversing the heating cycle of a coke oven battery includes mechanism to lock out either one of two reversing rods in proper time sequence so that only three of the normal four reversing rods are operable for the selected mode of underfiring of the battery. Shifting or change over can only be accomplished at the neutral position which occurs when all fuel gas to the battery is shut off. The shifting or change over initiates the change over of rich or lean underfiring gas and also is interlocked so that the main drive cannot operate until all change over functions are completed.

Abstract: A coke quencher car has a movable bed within a hopper that receives hot coke when pushed from a coke oven chamber. The movable bed is first elevated and then lowered to a horizontal position as coke falls into the hopper to more evenly distribute the coke therein. The bed may in some instances be fixed at an angle to the horizontal and in some instances the bed may be articulated and comprise a plurality of sections.

Abstract: Piston rings for internal combustion engines having the bearing face plasma sprayed with a superior scuff and wear resistant material. The bearing surface of the rings is plasma jet sprayed with a bond coat comprised of nickel, chromium and aluminum and a scuff and wear resistant coating of aluminum oxide, titanium dioxide and ferric oxide.

Abstract: A flow line valve containing an articulated disc, operated by means of a lever actuating mechanism and articulated by the combination of a guide with a rack and pinion gearing system, is disclosed. A valve disc is mounted in a valve body and is operated by rotary motion applied to a crankshaft, through a crank lever and a linking means, which in turn exerts a linear force on the valve disc. The valve disc is initially moved in relation to the seat in a longitudinal direction, directed by a guide means, which is then translated into a pivotation of the disc controlled by a rack and pinion system, such that the valve disc is first longitudinally retracted from the valve seat and then pivoted, clear of the valve seat, 90.degree. to an open position, concurrent with further retraction of the valve seat. Closure is effected by reversing the sequence of articulation.

Abstract: A pivotal disc shut-off valve is disclosed wherein a disc is pressed against a peripheral seat within a valve body to halt the flow of fluid material in a flow line. The disc is operated by a system of linkage arranged so as to allow the disc to be linearly moved in relation to the seat as a separate and distinct motion from pivotation of the disc. In closing the valve, a provision is made by which the disc is rocked as it contacts the seat to insure full closure. All motions of the disc are positively directed, with no reliance on the force of gravity, thus allowing the valve to be used in all positions.

Abstract: A method and apparatus for automatically positioning the various appurtenances of a Printer-Slotter-Folder-Gluer to form box blanks of various dimensional characteristics. The position of each appurtenance of the system is preselected by a binary numbering input representing each absolute position. The binary input is selected by thumbwheel switches employing binary coded decimal input. The input data is stored and can be retrieved and utilized to position the appurtenances for a blank of specific dimensional characteristics in response to a production order code.

Abstract: A coke oven door has a primary seal that includes a first metal knife edge in contact with a door jamb first sealing surface, and a secondary seal that includes a second metal knife edge in contact with a door jamb second sealing surface. The plenum or space between the sealing knife edges is maintained at super atmospheric pressure by flowing coke oven gas into the plenum. In a modification of the invention, the secondary seal includes a metal strp in contact with an elastic material; the plenum between the sealing surfaces being also pressurized above atmospheric pressure and purged of coke oven gas.

Abstract: Isotropic carbon fibers are disclosed and a method is disclosed for making them from liquid hydrocarbon distillates comprising reacting the distillate with elemental oxygen to produce a pitch-like product which will yield isotropic carbon upon subsequent carbonization, forming the pitch-like product into a filament and carbonizing the filament in an inert atmosphere at temperatures in excess of 800.degree. C wherein the distillate is reacted with the oxygen until at least 0.5 standard cubic feet of elemental oxygen is reacted per pound of distillate.

Abstract: A method for controlling pitch still operations is disclosed comprising measuring the temperature of a sample of pitch from the still at a preselected viscosity value, comparing the measured temperature with a predetermined temperature value, and adjusting the parameters of the still operation in response to the comparison. An apparatus for carrying out the method is also disclosed comprising a means for withdrawing and returning a sample of pitch from the reactor, a chamber for holding the sample of pitch, the chamber having a means for heating and cooling the sample, a temperature sensing device and a viscosity measuring device located in the chamber, and a means for recording the temperature value when the viscosity has reached a predetermined value.

Abstract: A method of generating electricity and fixing nitrogen oxides is disclosed in which coal is gasified at high pressure to produce a mixture of carbon monoxide and carbon dioxide, with a minimal amount of hydrogen and water, as a gas stream. This high pressure gas stream is mixed with an oxidant to introduce mixtures of nitrogen and oxygen and then completely combusted. The high temperature combustion gas is then further ionized to form a plasma and its velocity is increased, while its high pressure is maintained. The high pressure, high velocity plasma is fed into an MHD generator to produce electricity and where it is adiabatically expanded to fix the nitrogen oxides contained therein. The final gas stream, with the fixed nitrogen oxide compounds therein, is thereafter reacted to form nitric acid.

Abstract: The weight of a vessel having trunnion shafts supported by bearings fitted with pressure pads is determined as a function of the fluid pressure necessary to raise the shafts a constant distance and maintain the distance constant.