Abstract: A consumable heat retention shield for retaining the heat of the interior lining of a hot metal car includes a combustible framework having a bottom wall, upstanding walls and a flange, with the surface thereof that is to be directly exposed to the hot metal car covered with a layer of refractory material, with the shield being manually positioned on the hot metal car by workmen, and the shield consumable upon pouring of molten metal upon the shield and through the mouth of the hot metal car. Preferably, the shield has a metallic filler material in a cavity thereof to provide additional weight to the shield, which metallic filler material is compatable with the molten metal charged to the hot metal car.

Abstract: In the indirect method of retorting oil shale highly heated gases produced out of contact with flames in a heat exchanger are introduced into the retort and release oil vapor and high-value, high BTU gas and oil vapor from the shale which mix with the hot gas so introduced into the retort. Instead of burning the heat value gas of pipeline quality in the heat exchanger which is the present procedure, this invention fires the heat exchanger with abundant, cheap, low-value gas which for example is produced underground in-situ at or near the retort, thereby preserving the high value gas, after condensation of the oil vapor, partially for recirculation through the heat exchanger and retort and for in-plant operations, such a hydrogenation of the extract shale oil to produce refinable crude or for pipeline use.

Abstract: A drapable, consumable, heat retention shield for hot metal cars has a fibrous refractory sheet disposed between two metallic lattices, the lattices connected by fastening means to retain the sheet to form a panel having a bottom wall, upstanding side walls and a flange extending outwardly from the side walls. In one embodiment the metallic lattices substantially cover the fibrous refractory sheet, while in another embodiment cross strips of metallic lattices are used with a combustible supporting frame provided about the periphery of the fibrous refractory sheet to support the same.

Abstract: An insulating tile section, and a process of securing an insulating tile section about a metal pipe about which the tile section is contoured to fit, where the steps comprise forming the refractory insulation about a metal channel section having a bottom, spaced side walls with outwardly extending flanges along the top edges of the side wall. There is likewise provided a novel weld in which the channel embedded in the tile is attached to the pipe by a weld of generally rivet-like contour.

Abstract: In a continuous process for the extraction of crude refinery stock from oil-bearing sand, miscella produced earlier in the process is returned and mixed with oil-bearing sand to provide a feed slurry which, after heating, is separated into two streams, one of which is comprised predominantly of the coarser sand particles in the feed sand and miscella and the other of which contains most of the fine sand particles in the feed slurry. Miscella extracted by hot solvent from one of these streams is recycled to produce at least part of the miscella returned to produce the feed mix, and the other stream is processed to remove at least most of the sand and yield a miscella which is then distilled to separate the solvent for recycle to the extraction stages. Generally stated, a decantation step involving countercurrent extraction of the feed slurry will be used with sands which are comprised largely of fine particles.

Abstract: A pillow case providing the usual slip-over cover for a conventional pillow has, over one of its rectangular areas a strip of fabric, generally a contrasting and warmer material that is stitched to one long edge of the pillow case but is of a width somewhat more than half but less than the full width of the pillow case so that the other long edge of the strip is free. The ends of the strip are attached by stitching to the two ends of the pillow case, and there are pleats in the strip clear of the smooth flat central area of the strip. Desirably the strip is cut from a continuous bolt of cloth in the form of alternately reversed trapezoids with the cloth cut diagonally to form the diverging edges of the trapezoids while the original edges of the fabric form the parallel long sides of the trapezoid.

Abstract: A process for the dewatering of fine granular material is disclosed. During compression of the material, fluid is expressed and a small percentage of the material is intentionally permitted to escape through a self-cleaning opening in the apparatus. By maintaining the smallest dimension of the opening in the range of one to five times the diameter of the largest particle in the material, the opening remain essentially clear of any material which could cause plugging.

Abstract: A process and apparatus for the essentially complete recovery of heat, process fluid and yellowcake (U.sub.3 O.sub.8) dust particles normally lost during the drying of yellowcake slurry. The off-gases, consisting of noncondensable gases vaporized fluid, and entrained yellowcake particles, produced in a yellowcake slurry dryer are directed into a condenser in which the off-gases are cooled and condensed by fluid sprays, preferably water. The condensate spent spray fluid and entrained yellowcake particles are collected in the condenser sump. A stream of the condensate and yellowcake particles from the sump is directed into a thickener for the recovery of the yellowcake in the underflow therein and its eventual recombination with the yellowcake slurry being fed to the dryer. A second stream of the spent spray is circulated to the fluid sprays while a third stream is cross-circulated into a bleed chamber.

Abstract: A traveling grate consisting of individual pallets each supported on four wheels and independently connected to continuous side walls so that the pallets can pivot down away from and back toward the continuous sidewalls as the rear wheels follow a depressed portion of the trackway in the discharging zone of a retort. The wheels travel in a tunnel which is isolated from the processing zone of the grate retort but is in fluid communication with the charging and discharging zones. The processing zones are also separated from the remainder of the retort by transverse seals formed by false windboxes. Gas leakage from the processing zone is minimized by the tunnel-encapsulation of the retort's processing zone.

Abstract: A system and process has been devised for measuring and constantly maintaining a desired concentration of soluble sulfides in a processing solution for the purpose of fully maintaining its function. Sulfide regenerating solution is automatically introduced into the processing solution in an amount as constantly determined by concentration variations in the processing solution, to thus provide the processing solution with its most effective sulfide content. A constant take-off flow of processing solution is thoroughly mixed with a sulfide stabilizing solution flow to provide a tempered solution flow that is passed through a flow block having a sulfide measuring electrode and a reference electrode. Variable negative voltage generated on the sulfide electrode is sensed and compared with a substantially constant voltage generated on the reference electrode and is amplified in a controller assembly.

Abstract: A roller adjustment apparatus provides for the independent adjustment of spacing between any two adjacent rigidly spaced apart rollers without affecting the spacing of any of the other rollers in a roller screen conveyor. A support block of the apparatus, which rotatably supports an end of the roller and is slidably mounted on the conveyor frame, has two oppositely extending threaded bores oriented normal to the axis of rotation of the roller and parallel to the longitudinal axis of the conveyor. A threaded adjusting bolt, having oppositely threaded ends, is placed intermediate adjacent support blocks and engages the confronting threaded bores therein such that rotation of the adjusting bolt either increases or decreases the spacing between adjacent rollers. Threaded studs and a threaded adjusting sleeve are alternate corresponding forms for adjusting the roller spacing.

Abstract: For use in connection with an electrically driven pump and check valve combination as used in municipal water and sewage plants wherein the check valve prevents the reverse flow of water from the pipeline to which the pump supplies water into the pump, as would otherwise happen in case of a pump failure or breakdown or temporary power failure, there is provided a pump director with a first timer that starts the pump operating as soon as a control switch is closed and power is available and, as soon as the pump motor is energized, a blue signal light flashes, but if pressure does not begin to build up in the pump outlet with the check valve closed, a flashing red signal will replace the blue and continue indefinitely until manually reset.

Abstract: A door hinge for furniture is made up of a box-like part designed to be set within or inset into a recess in a door from its back side, and has a spring-powered or pressed bolt for acting on a cam face at the end of an L-like support arm. The arm is fixed to the body or frame of a piece of furniture so that in one (or two) positions where the cam face has an inwardly offset of cut-out portion, the bolt will be responsible for a detent effect to keep the door in a shut position or in shut and or open positions. The L-like support arm is fixed to the body of the piece of furniture by way of a base or mounting plate having a guiding mounting ledge for cooperating with one leg of the support arm. The one leg portion has a wedging face and is responsible for guiding the support arm parallel to itself for changing the height of the arm. The arm is mounted on the base plate in position for normal use by a metal screw or the like.

Abstract: Merchandise display area banding members are disclosed for use in providing partial frontal banding. The banding members are made of plastic and can function individually as either a left or right handed partial banding section or in combination with each other by means of a tongue and groove configuration to form an elongated center partition partial banding section. Channels defined on both sides of the banding member engage a vertical slot in a partition and inhibit lateral movement relative thereto.

Abstract: A homogeneous combustion engine fuel extender fuel formulation has been provided for blending with gasoline as a relatively inexpensive substitute therefor in an amount of not greater than about 50% by volume. Although employing ethanol and naphtha, it is formulated in such a manner that disadvantages of naphtha and ethanol as used alone have been avoided and that gasoline containing the extender will have substantially the same working characteristics as commercial leaded and unleaded gasoline, requiring no changeover or adjustment of engine components when used alternately with 100% commercial gasoline. Basically, the formulation involves a critical solution content of an aliphatic naphtha, ethanol and a higher alcohol.

Abstract: A transportable apparatus for accommodating a substance to be shielded from the environment, which may be disposed in a receptacle, has a pressure vessel provided with an opening which can be sealingly closed by a door with the substance therewithin, and a container within which the vessel is disposed.

Abstract: A burner for the flash oxidation of particles of metal concentrates has three downwardly directed, concentrically mounted tubes each having a venturi nozzle on the discharge end thereof. Finely divided metal concentrates introduced into the annular space between the inner tube and the intermediate tube are accelerated by high pressure oxygen introduced through the inner tube to substantially the velocity of an oxidizing gas introduced into the annular space between the intermediate tube and the outer tube. Means are provided for adjusting the extent that the nozzles on the ends of the inner tube and intermediate tube extend into the nozzles on the ends of the intermediate and outer tubes respectively.

Abstract: A coke oven battery servicing apparatus includes a coke catching and collecting bucket movable from a first position adjacent the oven to a second position clear of the oven and a coke guide cage having an opening therein which is complementary to the bucket. When in the first position the bucket collects coke spillage during oven door extraction and door jamb cleaning. When the coke guide is positioned for pushing, the bucket is moved into a third position in which the bucket is removably inserted into the aforementioned opening to become integral with the coke guide cage. The collected coke spillage is then pushed together with the coke from the oven through the guide means for disposal in a quenching receptacle or car.

Abstract: A mill layout operating apparatus system and procedure for maximizing the recovery of exhaust or effluent gases from an electric arc metal refining or melting furnace is provided that makes use of a longitudinally extending scrap preheating bucket station providing ductway pad. The pad extends at its end to provide a down-positioned scrap loading station for each bucket immediately after its preheated content has been fed into the furnace preliminary to a second melting operation. At the same time, scrap buckets are positioned along the parallel stations of the ductway pad to preheat their scrap loads with the effluent or exhaust gas issuing from a smoke chest of the furnace and as generated by a preceding melting-down operation. The number of or capacities of the preheating buckets to be positioned on the ductway pad is proportioned to the amount of charge required for each furnace melting-down operation.