Abstract: A process for continuously casting steel wherein liquid steel is teemed from a ladle through a shroud into the pour box section of a tundish and poured from the tundish through one or more outlets remote from the pour box, and wherein the surface of the steel in the tundish is covered with a first flux in the area of the pour box and with a second flux in the remaining areas of the tundish. The flux used in the pour box area has a higher melting temperature than the flux used in the remaining areas. Preferably all fluxes used are basic fluxes containing CaO and Al2O3.

Abstract: An apparatus for pelletizing a feed material containing finely divided solids and water by compressing the feed material in the die cavities of a pellet mill and permitting excess water to escape from the material being compressed through at least one water escape opening in each die cavity.

Abstract: An improved pelletized fuel consisting essentially of from about 70% to about 98% coal fines and from about 2% to about 30% waste thermoplastic polymeric material (plastic) and a method of producing the improved pelletized fines are disclosed. The plastic is shredded or granulated before mixing with the coal fines, and the mixture is heated to a temperature to soften or melt at least a major portion of the plastic. The heated mixture is then shaped by applying a pressure of at least about 600 PSI and pressing the mixture through a pelletizing or extrusion die, or shaping the mixture in a briquetting operation.

Abstract: An improved process for removing mercury and other trace elements from coal containing pyrite by forming a slurry of finely divided coal in a liquid solvent capable of forming ions or radicals having a tendency to react with constituents of pyrite or to attack the bond between pyrite and coal and/or to react with mercury to form mercury vapors, and heating the slurry in a closed container to a temperature of at least about 50.degree. C. to produce vapors of the solvent and withdrawing vapors including solvent and mercury-containing vapors from the closed container, then separating mercury from the vapors withdrawn.

Abstract: A bake hardenable cold-rolled steel sheet and a method for producing the steel sheet are provided, wherein the steel sheet includes carbon in a range of about 0.003-0.1 wt. %, with the amount of carbon in solution being about 3-30 ppm, and the steel is substantially free of Ti, Nb, and V, which are otherwise commonly employed in producing low-carbon bake hardenable cold-rolled steel. The method includes a two stage batch or box anneal, a first stage of which is an intercritical batch anneal at a temperature between the A.sub.1 and A.sub.3 temperatures, and a second, subcritical batch anneal at a temperature below the A.sub.1 temperature and above 900.degree. F., with a slow controlled cooling from the intercritical temperature to the subcritical temperature, and from the subcritical temperature to ambient temperature.

Abstract: A method of and apparatus for pelletizing a feed material containing finely divided solids and water by compressing the feed material in the die cavities of a pellet mill and permitting excess water to escape from the material being compressed through at least one water escape opening in each die cavity.

Abstract: A display case for simultaneously displaying a phonograph album and record includes a shallow rectangular open topped base tray having a width to receive an album and a length to receive the album and at least a portion of a phonograph record. A support post projects from the bottom of the tray to support and position the record in the case at the end of the tray opposite the album preferably with a portion of the record inserted into an open side of the album. A hinged transparent cover is mounted on the tray to cover the album and record, and a latch is proved to releasably retain the cover in a closed position. Hanger brackets may be mounted on the back of the tray for hanging the case on a wall for displaying the album and record.

Abstract: A sealed shaft bearing assembly employs a lubricant seal having a rigid seal case supporting a resilient dust seal in rubbing contact with a cylindrical surface on the shaft, and a labyrinth type primary seal between the dust seal and the interior of the seal case, with the labyrinth being defined by a stator mounted on the seal case and a rotor mounted for rotation with the shaft, and with the stator including a cylindrical tubular portion defining an elongated thin annular gap with the shaft cylindrical surface and the rotor defining an elongated thin annular gap with the outer surface of the rotor. The radial thickness and axial lengths of the thin annular gaps are such as to preclude the passage of grease type lubricant therethrough upon operation of the bearing.

Abstract: An in-line skateboard for supporting a rider with his feet in side-by-side relation one on each side of the longitudinal centerline of the board has a toe abutment wall for preventing forward movement of the rider's shoes and a heel support supporting the shoe heels at an elevation substantially above the surface of the board. The wheel base is very short, preferably no greater than the distance between the toe abutment and the heel support, to provide steering control by the rider by leaning the skateboard and shifting his weight to provide more or less weight on the front or rear wheels, respectively. The in-line wheels may be replaced with a single skate blade for using the skateboard on ice.

Abstract: Disclosed is a double row tapered roller bearing assembly employing a contoured, maximum journal-contact bearing seal wear ring especially adapted to be installed on a journal at the end of a shaft or axle with the wear ring providing an interference fit contact area engaging the journal over at least a major portion of the axial length of the wear ring. Stress risers are eliminated by providing smooth contoured surface junctures to thereby substantially reduce fretting wear on the journal, with the increased contact area facilitating heat transfer to the shaft to extend seal life.

Abstract: An improved coke oven wall constructed for refractory brick and having generally vertically extending gas flues formed therein employs different shaped brick to form the portion of the wall defining the flues in alternate courses of brick with the refractory brick in each course being shaped and arranged so that no mortar joint between two adjacent brick in any course is contained in a single vertical plane from a flue to the adjacent oven.

Abstract: A continuous hot dip galvanizing line for coating steel strip includes a continuous annealing furnace for annealing the strip before discharging the strip directly into the molten coating metal and a broad based bridle is located in the final cooling zone of the furnace. The broad based bridle includes at least two spaced bridle rolls each of which is independently driven and controlled to produce a more uniform tensile load in the strip and improve strip stability and coating quality in the final product.

Abstract: A spray coating booth for enclosing individual articles to be coated with a liquid spray while the articles are supported in closely spaced relation on an article conveyor for movement through the booth includes a rigid frame with fixed sidewalls and movable top and end walls which may be moved between a closed position completely enclosing an article supported on the conveyor and an open position to permit articles to be moved into and out of the booth. The movable top assures against coating liquid dripping onto and contaminating articles moving on the conveyor which are not to be coated. The end walls are supported for movement in substantially a transverse vertical plane to permit close spacing of articles on the conveyor without contact of the articles by the end walls.

Abstract: An edge trimmer for trimming the side edges of a running length of metal strip having upper and lower rotary shearing cutter discs engaging the top and bottom respectively, of the strip being trimmer includes top and bottom cylindrical strip stabilizers mounted coaxially with the cutter discs engaging the top and bottom surface of the strip adjacent the trim line, and a movable holddown roll disposed inboard of the top strip stabilizer and cooperating with the lower strip stabilizer to stabilize the strip at a location spaced inward from the trim line. The holddown roll is movable between an operable position engaging the strip and an inoperable position permitting access to the cutter disc for servicing.

Abstract: A wall panel assembly for an external building roof or wall including a plurality of generally rectangular sheet metal panels each including a longitudinally extending outwardly projecting reinforcing rib adjacent each longitudinal side edge and at least one such rib intermediate said longitudinal side edges with the panels being disposed in parallel relationship with the reinforcing ribs on adjacent side edges of successive panels overlapping and secured to underlying structure by a plurality of headed fasteners penetrating each said panel along each reinforcing rib has the fastener heads concealed by batten strips mounted by clips which are secured to each reinforcing rib by the headed fasteners.

Abstract: A reusable air filter assembly for use in forced air heating and cooling systems includes an inlet stage filter medium consisting of a single layer of fabric woven in an egg-crate pattern and of relatively coarse polypropylene yarn, an outlet stage filter medium consisting of two layers of fabric woven in an egg-crate pattern of relatively fine polypropylene yarn and a precipitation chamber between said inlet stage and said outlet stage defined by a corrugated aluminum wire screen, with the precipitation chamber having a thickness, in the direction of air flow through the assembly, which is at least equal to the combined thickness of the inlet stage filter medium and the outlet stage filter medium. The filter assembly is supported in a corrosion resistant frame by opposing grid covers of expanded metal having a low friction coating thereon.

Abstract: An improved apparatus for and method of aerating fish ponds utilizes a portable, wheel mounted, tractor drawn and driven pumping apparatus adapted to be backed into a pond to submerge the pump intake with the tractor remaining on the bank adjacent the water's edge. The pump is driven from the tractor power take-off to deliver a high volume, relatively low-pressure water output to a discharge manifold adapted to discharge the water in two opposed streams generally parallel to the bank of the pond and to simultaneously discharge water in an upward direction as a spray to absorb oxygen from the atmosphere before falling back into the pond. The apparatus can be easily moved and quickly positioned for emergency operation to aerate a pond and prevent fish, searching for oxygen in the shallow water at the edge of the pond, from beaching themselves and dying.

Abstract: An improved dental flossing device includes an elongated handle supporting at one end a generally star-shaped floss holding head including a plurality of generally radially extending fingers disposed in a common plane extending transversely of the handle. A floss positioning groove is formed in the distal end of each finger for receiving and retaining a closed loop of dental floss whereby a plurality of sections of the floss loop are presented one between each adjacent pair of fingers for flossing the teeth. After use, the loop of floss can be easily removed and a new loop installed.