Abstract: A pulsating potential is applied to the anode in the electrolytic oxidation of arsenic trioxide to arsenic acid to reactivate the anode and increase the current density.

Abstract: Synergistic fire retardants for wood and other cellulosic materials which are substantially non-hygroscopic and which do not require high curing temperatures in the material treated are formed of the partial reaction product of dicyandiamide, phosphoric acid, boric acid and water wherein the combined weight ratio of dicyandiamide and phosphoric acid to boric acid is from about 60 to about 40 to from about 90 to about 10.

Abstract: A method is disclosed for extracting sym-octahydroanthracene (s-OHA) from a product isomer mixture formed by the aluminum chloride catalyzed isomerization of sym-octahydrophenanthrene (s-OHP). Isolation of the s-OHA product isomer is accomplished by contacting the reaction product mixture with a specified liquid hydrocarbon solvent into which the s-OHA product isomer and unconverted s-OHP isomer dissolve and separate from a residue. The undissolved residue comprises a complex made up of aluminum chloride catalyst and small amounts of the s-OHA and s-OHP isomers. This catalyst complex may be recycled into a fresh starting mixture of s-OHP isomer for catalysis of a subsequent s-OHP isomerization reaction.

Abstract: A pivoting back one-spot coke quenching car for use in coke batteries having a coke bench structure with clearances which make the use of one-spot cars impractical. The novel structure of the present invention permits the car to have sufficient volume to receive coke in one-spot while providing a pivoting back that allows the car to tilt, travel and dump in coke batteries that have close clearances.

Abstract: Enclosure and exhaust apparatus is provided to enhance control and removal of coke-side emissions during a push in the operation of a coke oven battery. The gaseous and entrained particulate emissions are initially confined to a first longitudinally extending containment zone where the emissions are directed, under the influence of its gaseous thermal drive, upwardly and laterally outwardly away from the coke-side face of the battery. The emissions are then transferred, at the peak of the first containment zone, laterally, through a gas expansion throat, into a second longitudinally extending containment zone that is adjacent and parallel to the first containment zone. Contemporaneously with entering the second containment zone, a portion of the emissions is removed therefrom through an exhaust conduit located at the upper reaches or peak portion of the second containment zone.

Abstract: An improved gear type coupling wherein the sleeve thereof is a torsional shear element to provide torsional overload protection to the coupling and its connected equipment. The shear section of the shear element is an integral part thereof and all sections of the shear element conduct an equal share of the transmitted torque.

Abstract: Disclosed are an apparatus and method for removing the fines that fall through the load run and accumulate on the return run of a foraminous, endless conveyor. In accordance with the invention, the fines are collected on the return run, conveyed on the load run to the discharge end of the conveyor and then passed through the conveyor at its discharge end.

Abstract: Articles and a method are disclosed useful for providing a lift insert for a cast concrete product, such as a cast concrete slab or panel. The articles include a threadless plug for temporary insertion into an insert for receiving a lifting device in a cast concrete product, an insertion tool therefor, and the insert assembly. The threadless plug is characterized by an elastomeric tubular member having closure and/or abutment means on each end and dimensioned such that, in its operative position in the lift insert, such as a coil insert, the portion of the tubular member between the ends is placed in tension to positively seal against ingress of concrete into the top of the coil or insert and between the void plug and the coil during casting.

Abstract: An iron blast furnace casting cage is provided comprising an enclosure for substantially surrounding a blast furnace tap hole and auxiliary equipment and having means defining an upper wall portion disposed above said tap hole and auxiliary equipment and a side wall portion extending generally downwardly from said upper wall portion, an access means in said side wall, an exhaust opening formed in one of said wall portions, said upper and side wall portions adapted to be disposed in a closely surrounding relation to said tap hole, auxiliary equipment and the floor of the cast house, and exhaust means extending from said exhaust opening for withdrawing pollutants generated in said cage.

Abstract: A projectable device for aligning rail mounted equipment with track side structures, and, in particular, for aligning a coke oven door extractor, pusher ram, or jamb cleaner with a coke oven door. In one embodiment, a rod having an attached terminal fork is extended horizontally toward the door so as to indicate alignment when an attached aligning plae is engaged by the fork. The rod projects from a piston and cylinder combination, and it is automatically withdrawn if alignment is correct. In a second embodiment, an arm having an attached terminal fork is swung downwardly in a vertical arc to engage the aligning plate and thereafter automatically returned to its initial, vertical position, if alignment is correct.

Abstract: An increased water repellency is imparted to wood and other cellulosic materials with an aqueous solution containing a mixture of an aluminum halohydrate and a water soluble salt of a mono, di or trivalent cation selected from zinc, manganese, barium, calcium, cobalt, magnesium, nickel, copper, cadmium, strontium, beryllium, lead, mercury, chromium, sodium, lithium, and potassium and a monovalent anion selected from formate acetate, haloacetate, acrylate, methacrylate, propionate, chloro and bromo-propionate, butyrate, isobutyrate, nitrate, sulfamate, iodide, bromide, and chloride, said water soluble salt excluding the nitrates, sulfamates, chlorides and bromides of sodium, potassium and lithium.

Abstract: The novel gasification reactor comprises a vertically oriented chamber with an upper pyrolysis section, a lower feed opening, and a primary combustion section. A lateral passage on each side and near the top of said primary combustion section each communicates with a separate secondary reaction chamber where a partially reacted feed is further reacted to form the product gas. In each passageway is a venturi nozzle or preferably a plurality of nozzles which accelerates the gas carrying entrained carbonaceous materials to produce a swirling curvilinear motion in the secondary reaction chambers.The reactor is fed by means of a plurality of hoppers and screw conveyors whereby the flow is regulated and positively fed both by gravity and the screw conveyors into rotary valve cavities in which counter rotating valves travel. The valves feed a piston which charges the reactor.

Abstract: A laminated wooden load support structure is described herein, wherein at least one of the lamina is comprised of a plurality of wooden elements orientated with respect to the load bearing surface or wear surface such that the end-grains of the wood elements of the lamina form a part of the load bearing surface.

Abstract: An apparatus for determining the presence or absence of a predetermined minimum flexural strength and stiffness of a relatively rigid material, said apparatus comprising:a frame, a pair of flexure means, each flexure means affixed on opposite sides and ends of a support means affixed to said frame, and equidistant from a fulcrum means for said support, said fulcrum means affixed to said frame with a pivot point at the midpoint thickness of the material to be tested, a pair of guide means, each guide means affixed to said frame equidistant from said fulcrum means and positioned on opposite sides of and apart from said flexure means whereby the material to be tested is guided between the flexure means and guide means in a substantially horizontal path, a load means affixed to said frame for applying a predetermined force to said support means whereby the flexure means deflects the relatively rigid material, and sensor means affixed to said frame for detecting the amount of deflection of said material.

Abstract: Gel-time drift may be reduced in promoted polyester resin systems by incorporation of an amine salt in accordance with the disclosed compositions and methods. The amine salt is a salt-like reaction product of an amine and a carboxylic acid-containing moiety. For free-amine type promoted resin systems, an amine salt may be substituted for the amine promotor to provide a low-energy curable polyester resin system having the advantages of a promoted system as well as being stabilized against gel-time drift. Comparative data show suppression of gel-time drift of resin samples containing an amine salt to as low as 7 percent of gel-time drift of counterpart free-amine promoted resin system samples.

Abstract: An aqueous copper chromate concentrate substantially free of sulfate anions is provided which can be diluted for use as a wood preservative. The concentrate is formed of a hexavalent chromium compound, a bivalent copper compound, and an acid selected from nitric, sulfamic, fluosilicic, fluoboric and mixtures wherein the total oxide content of CuO and CrO.sub.3 is from 25 to 60%.

Abstract: A process is disclosed for gasifying solid carbonaceous material at elevated temperature and pressure to produce a gas consisting of carbon monoxide and hydrogen, which comprises forming a slurry at atmospheric pressure of the carbonaceous material with a liquid having a specific gravity of from 1.1 to 1.9, a boiling temperature of at least 70.degree. F., a latent heat of vaporization less than about 200 BTU per pound, a critical temperature which is less than the incipient coking temperature of the carbonaceous material, a stability at temperatures up to 600.degree. F., an essentially inert chemical reaction with the carbonaceous material at temperatures less than about 600.degree. F., an immiscibility with water or solubility in water at no more than 5%, and a dissolving ability for hydrogen sulfide at temperatures of from -40 to 250.degree. F.

Abstract: A rotor for a hammer mill and the like comprising a rotor body and a hammer secured to said rotor body, said hammer being comprised essentially of flexible wire rope.

Abstract: An extruder screw for use in the processing of a food mash is disclosed, in which, the mash is introduced into an inlet opening in an extruder barrel and conveyed by a substantially coextensive screw to an outlet or discharge opening and then through an extrusion die. The extruder screw comprises a single flight helical screw section initiating at the inlet opening and terminating within the extruder barrel, with a flightless section immediately following thereafter, and, a further helical screw section immediately following the flightless section and extending to the proximity of the outlet opening of the extruder barrel.

Abstract: An apparatus and process for purifying and separating a crystalline compound from its impurities in a slurry containing same, said process comprising introducing said slurry under pressure into a cylindrical pressurized filter-washer having a substantially constant inside diameter which is substantially free of protrusions, said filter-washer having a filter means with a screen contiguous with an internal surface of the cylinder, said screen having a smooth surface sufficient to provide minimum friction so as to allow a moving bed of crystals to move past it and withdraw a filtrate without blinding, filtering the crystals, withdrawing the filtrate, and moving the crystal bed past the filter screen, applying a controlled restraining force on the crystal bed so as to prevent relaxation and channeling and over-compacting of said bed by means of a compression and harvest means substantially contiguous with said inside diameter and located between said filter means and an exit means, said compression and harvest m