Abstract: A connector plate combination for connecting wooden members comprising a connector plate and an underlying substantially imperforate reinforcement plate, said connector plate having a body portion and a plurality of teeth extending generally transversely outwardly from said body portion, the central portion of said body portion overlying said reinforcement plate, and a plurality of said teeth being forced through said substantially imperforate reinforcement plate.

Abstract: There is disclosed a traveling grate apparatus wherein materials are treated at an elevated temperature for purposes such as sintering, pelletizing, calcining, and the like. In such apparatus, a grate and upstanding side plates form a channel for carrying the material along. Each side plate has along its inner face a bench for holding the material to be treated. As the treatment of material effects changes in the volume of the material, the material tends to lose contact with the side wall, but, by resting on the bench, a seal is provided to prevent direct passage of gases through the bed in the sidewall sections.

Abstract: Effluent containing cresols such as are contained in Lurgi tar acids are separated by preferentially treating the cresols with an aqueous alkali metal carbonate or bicarbonate at elevated temperature for a time sufficient to form the alkali metal salt of at least part of the cresols, but not so long as to form any appreciable alkali metal salt of 2,6-xylenol or o-ethylphenol. The water soluble alkali metal salts of cresols are then separated from the water insoluble phenols and said salts acidified to "spring" the cresols and the water insoluble cresols separated from the aqueous solution.

Abstract: There is disclosed a multi-stage process for reducing sulfur dioxide to sulfur or to hydrogen sulfide whereby a hydrogen-containing gas from a high temperature gasifier is used. In the first stage of the process, the gasifier exit gas is contacted at a minimum temperature of about 1800.degree. F. with recycle gas containing SO.sub.2, H.sub.2 S, COS, mercaptans, and CS.sub.2 in order primarily to reduce the organic sulfur compounds, i.e., COS, mercaptans, and CS.sub.2, which heretofore would tend to accumulate in prior known methods employing a carbonaceous fuel for the reduction of SO.sub.2. Gas leaving the first stage is then sent to a second stage wherein SO.sub.2 from an external source is added. Reduction of sulfur dioxide occurs in the second stage at a temperature of about 2000.degree. F. minimum, with the surplus heat of reaction removed by the generation of steam. Gas leaves the second stage and is thereafter cooled with simultaneous generation of steam and selective condensation of sulfur vapor.

Abstract: A process is provided for the gasification of a carbonaceous fuel to produce a synthesis gas whereby a secondary stream of oxygen is indirectly heated from said synthesis gas and passed to the gasifier to augment the primary oxygen supply.

Abstract: A linear aryl sulfide/sulfonate polymer having improved thermal stability is provided consisting essentially of units of the formula: ##STR1## wherein n is an integer of from 3 to about 250.

Abstract: An increased amount of carbon monoxide is produced in a process for the gasification of carbonaceous materials by employing a reverse water gas shift reaction in the process. Raw gas produced by the gasification of carbonaceous materials contains predominantly carbon monoxide and hydrogen along with hydrogen sulfide, carbon dioxide, water and methane. Carbon dioxide is separated from the raw gas as is the hydrogen sulfide. Thereafter, the carbon monoxide is separated from the raw gas to yield one portion of the carbon monoxide product gas. After the removal of carbon monoxide the raw gas consists of a hydrogen-rich gas. The hydrogen-rich gas which may be purified is mixed with the previously separated carbon dioxide along with any imported carbon dioxide and along with a recycle gas from a catalytic reaction loop. This mixed gas is conveyed to a heat exchanger in the catalytic reaction loop and passed through a heat exchanger located immediately after the gasifier through which the raw product gas passes.

Abstract: A method of reducing the carbonization pressure in the coking of coal is provided which comprises randomly dispersing flakes through the coal, said flakes formed of a material that does not pass through a plastic phase such as pressed sawdust wherein the flakes have a thickness of between about 1/8" and about 3/4" and a length and width of between about 1" and about 5".

Abstract: An apparatus is provided for adjusting pallet wheel track length when the spacing between pallets changes due to temperature changes such as in the sintering of ore. The apparatus comprises pivotable arc segments which can be opened or closed to expand and contract the track length, a wedge-shaped casting positioned between said arc segments and slidable in and out at right angles to said track containing track to mate with said arc segments, drive means for moving said arc segments and wedge and a sensor means for detecting a change in pallet spacing and activating said drive means.

Abstract: The cleaning apparatus includes: (A) a cleaning head having a plurality of angled side by side chisel-like blades, the end sections of which are affixed to a pivotable member having one end portion secured to a frame member, said pivotable member allowing said blades to traverse an arcuate path, said cleaning head having a centrally located pivotable member for affixing cleaning head to a carriage and allowing for uniform loading of blades against surface to be cleaned; (B) a carriage for transporting the cleaning head in a reciprocal path across the periphery of an open door surface to be cleaned, pivotably connected to the cleaning head by the centrally located pivotable member and means for driving said carriage; and (C) a supporting ram affixed to the carriage on the side opposite from the cleaning head, and means for moving the carriage and cleaning head toward and away from the surface to be cleaned.

Abstract: Stable chromated copper arsenate Type B wood preserving concentrates comprising a chromium additive, a copper additive and an arsenic additive with a total of from 5 to 45% oxides and sulfamic acid wherein said copper additive is present in an amount greater than will react with said chromium additive and said sulfamic acid is present in an amount that will inhibit the reaction of the excess copper additive with said arsenic additive.

Abstract: A process is provided for minimizing the deposition of materials like naphthalene and tar in the ammonia liquor coolers of the primary cooler in a by-product recovery process for coking carbonaceous materials. The ammonia liquor coming from the primary cooler, wherein it is used to cool the coke oven gas, has added to it light oil before it reaches the ammonia liquor coolers, where it is cooled indirectly with water. The addition of the light oil keeps the naphthalene and tar in solution at the lower temperatures of the ammonia liquor coolers, thereby reducing or preventing the deposition of the naphthalene and tar in the ammonia liquor coolers.

Abstract: The oven door comprises a latching mechanism having a centrally located spring contained within a spring box to exert a force against said door. A pair of hinge links are pivotably connected to the door hinge shaft and to the spring box. A shaft link is keyed to said shaft and pivotably connected to a latch bar of a yoke type U configuration. A primary toggle link is located on either side of said spring box and pivotably connected on one end to said spring box and door hinge links and on the other end to the latch bar legs, means to limit rotation of primary toggle links and spring box around pivot connections is provided, a latching bracket is affixed to a stationary member for engaging latch bar to secure door to door chamber frame, and actuator means are provided for turning said shaft to open and close the door.

Abstract: Aqueous wood- and paper-treating solutions are provided of hexavalent chromium and, optionally, copper or copper-arsenic mixtures with aluminum halohydrates in an acid medium which provide increased water repellency.

Abstract: Tars and hydrocarbon oils containing water are dehydrated in a thermally efficient and environmentally acceptable manner. The tars or hydrocarbon oils are heated externally to any holding vessel to a temperature equivalent to at least 100.degree. C. at atmospheric pressure and are sprayed into a holding vessel to enhance the separation of water from the tars or hydrocarbon oils. Then the water in the vapor state is removed from the holding vessel and scrubbed to remove any noxious chemicals.

Abstract: A method of fabricating seamless tubes of malleable metal is provided comprising supporting an annular work piece of greater wall thickness than the required thickness of the completed tube within a die ring in encircling engagement with its outer surface and applying an axial pull to one end of said work piece to draw it axially through said die ring while simultaneously rolling the interior of the work piece with a forming tool having a plurality of centrifugally loaded rollers so as to enlarge the internal diameter and lengthen the work piece axially in the direction of said axial pull.

Abstract: A method and device for improving xerographic development of non-metallic photoreceptor imaging surfaces containing irregularities of 5 microns or larger by contacting and moving a smoothing and abrading means against the irregular surface in the presence of an interposed hydrodynamic hydrostatic fluid bearing.

Abstract: A method of producing a lithographic printing master, novel masters and a method of printing therefrom are provided which obviate the need for an aqueous fountain solution. The process for printing comprises applying an ink and a solvent (which may or may not be in the ink) to an imaged master and transferring the resultant developed image to a receiver member. The nonimaged portions of said master are formed of an ink releasing solvent swellable elastomer selected from organohydrocarbon backbone polymers (which may or may not contain hetero atoms), copolymers and mixtures. The solvent is a fluid capable of swelling the nonimaged areas of said elastomer but not capable of dissolving the elastomeric imaged master. The solvent is added in an amount to diffuse into the nonimaged areas of the imaged master and form a substantially ink-free layer on the nonimaged areas of the master during inking and transferring of the inked image.

Abstract: Improved waterless lithographic printing masters are provided having minimum background ink reflection density. The master comprises a crosslinked block copolymer containing elastomeric, ink releasing siloxane blocks chemically linked to organic image accepting thermoplastic blocks, said copolymer having a molecular weight for the organic blocks sufficient to provide strength and a background ink reflection density of less than 0.02 and preferably less than 0.01.

Abstract: Polyesters obtained by reacting isophthalic acid or terephthalic acid with a polyol with or without a catalyst in a first stage to form a half-ester mixture which is reacted in a second stage with an aliphatic polycarboxylic acid are produced at reduced processing times. In the first stage a portion of the total polyol to be reacted is contacted with substantially all of the isophthalic acid or terephthalic acid. Then, this mixture is heated with agitation to a temperature of at least 190.degree. C. and the remaining portion of the polyol is added to the heated mixture with agitation in such a manner that the temperature remains at or above the 190.degree. C. This temperature is maintained until the reaction to form a half-ester mixture is completed. This reaction may be conducted in the presence of an esterification catalyst. The polyester-monomer mixture is reacted in a second stage with an aliphatic polycarboxylic acid to produce the polyester.