Abstract: An apparatus for cleaning the top or bottom horizontal section of a coke oven door seal ring and which applies approximately constant pressure to all points along its lateral path. A cleaning head is pivotally mounted on the terminal end of an arm member which is, itself, pivotally mounted to oscillate in a horizontal arc on a base structure. An extension of the door cleaner frame is suspended above the arm and on this frame there is mounted a spring. A vertical, spring driven link is attached at its upper terminal end to this spring and at its lower end to the base. This link is also medially attached to the frame so as to pivot in a vertical arc about this point of attachment. A second idler link which is pivotally connected at its top to the frame and at its bottom to the pivoting base keeps the cleaning head from being vertically displaced out of contact with the seal ring.

Abstract: A coke oven charging hole that dissipates heat emanating from the oven so that the cover resists warping due to overheating. The concentration of large amounts of heat directly above the charging hole is also avoided. A lower concave housing member fits into the charging hole and is partially filled with insulation. A circular plate is fixed to this housing member so as to form an insulating air space between this plate and the insulation. One or more other plates are superimposed over this plate so as to form heat air spaces which are open to ambient air so that a laterally directed flow of air is established in these air spaces.

Abstract: A heating wall on a horizontal coke oven battery. The liner wall section which separates the flues from the oven chambers is characterized by two or more laterally extending rows of vertical ridges. The ridges in adjacent rows are misaligned so as to establish surface turbulence in rising flue gases. As a result of this turbulence and the increased surface area afforded by this configuration, the rate of heat flow through the liner walls is increased so as to increase the rate of carbonization in the oven chambers.

Abstract: A method is disclosed for promoting isomerization of sym-octahydrophenanthrene (s-OHP) to sym-octahydroanthracene (s-OHA) in the presence of a catalyst provided by aluminum chloride or aluminum bromide, or a mixture of these two compounds. The rate of isomerization is increased by having the reaction run in the presence of an acyl peroxide such as benzoyl peroxide or lauroyl peroxide.

Abstract: A method is disclosed for promoting isomerization of sym-octahydrophenanthrene (s-OHP) to sym-octahydroanthracene (s-OHA) in the presence of a catalyst provided by aluminum chloride or aluminum bromide, or a mixture of these two compounds. The rate of isomerization is increased by having the reaction run in the presence of an aryl phenone such as benzophenone.

Abstract: An apparatus that employs a pair of high peripheral speed impact cutters to remove hard carbonaceous deposits from the lateral surfaces of the refractory lining of coke oven doors. The motion of these cutters is synchronized with that of an element of the apparatus which displaces it from one position to another on the door, and, in one embodiment, means are also provided to scrape tarry carbonaceous deposits from the door's seal ring.

Abstract: Catalytic material is provided by a composition comprising the elements vanadium, non-water-contained hydrogen, phosphorus and non-water-contained oxygen. The VHPO elements are present in a relatively fixed atomic ratio range, there being more non-water-contained oxygen present than phosphorus by an atomic ratio of greater than five to one. The catalytic material comprises an anhydrous primary component having vanadium of mixed valence, hydrogen, phosphorus and oxygen in an empirical relationship defined by VH.sub.x PO.sub.y, wherein "x" has an average value in a range from about 1.29 to about 1.40, and "y" has an average value in a range from about 5.46 to about 5.55. The anhydrous VHPO catalytic material may also be described by a structural formula (VO).sub.m (VO.sub.2).sub.n H.sub.2n (PO.sub.4).sub.n (P.sub.2 O.sub.7).sub.m/2, wherein m+n=3, "m" has an average value in a range from about 0.90 to about 1.07, and "n" has an average value in a range from about 1.93 to about 2.10.

Abstract: A filter bag tensioning device for use in a bag house is disclosed. The tensioning device comprises a straight lever arm adapted to be pivotally mounted in the upper reaches of a bag house and carrying, on the end of the lever arm opposite that of filter bag attachment, a semi-fixed counterweight. The semi-fixed counterweight is prevented from rotating as its end of the lever arm moves in an ascending direction from a horizontal position but is free to rotate as its end of the lever arm moves in a descending direction from horizontal, to thereby continuously maintain a desired design tension on an attached filter bag. In a preferred embodiment, the lever arm can also be rotated to a vertical position and then moved longitudinally of its pivot to substantially lower the filter bag attachment point, thereby greatly facilitating attachment and replacement of filter bags and, in a further preferred aspect, to permit these operations to be performed by a workman having both hands free.

Abstract: A heat shield for hot vertical pipes and, in particular, coke oven ascension pipes. This heat shield includes a lower, open-bottomed cylindrical housing section which peripherally encloses the pipe. Vertically projecting from this housing is an arcuate wall which is spaced from the pipe. The housing is internally partitioned into a warmer space adjacent the pipe and a cooler space remote from the pipe so that a heat dissipating upward draft is established in the housing and between the pipe and the vertical arcuate wall.

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: 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 plate 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: 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 flow measuring apparatus having increased sensitivity is disclosed for measuring the flow of gas, particularly through a confined passage. The flow measuring apparatus comprises a tube having a constant or tapered orifice section followed by an abrupt expansion of the orifice; a total pressure sensing probe is located preferably in the section of the tube with the constant or tapered orifice, the total sensing probe having an opening parallel to the flow of gas and facing upstream; and a static pressure sensing probe is located in the walls of the tube in the expanded orifice section immediately after the abrupt expansion, the static pressure probe having an opening either parallel to the flow of gas and facing downstream or perpendicular to the flow of gas. The sensing probes may be connected to a measuring device that provides a readout of the sensed pressures or pressure differential or to a control unit that is responsive to the sensed pressures or pressure differential.

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: 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: A flow sensing apparatus having increased sensitivity is disclosed for sensing the flow of gas, particularly through a confined passage such as the ducts in heating, ventilating and air conditioning systems. The flow sensing apparatus comprises a tube divided by a wall into an upstream chamber and a downstream chamber. The upstream chamber can have a constant orifice but preferably the walls of the tube in the upstream end are tapered to form a tapered chamber section. A total pressure sensing probe is located in the center of the tube and has its opening in the upstream chamber of the tube. The total sensing probe has its opening parallel to the flow of gas and facing upstream, the opening of the total pressure sensing probe preferably being in the wall dividing the tube into the upstream and downstream chambers. A static pressure sensing probe is located in the downstream chamber. The static pressure probe may be located in the walls of the tube and have its opening perpendicular to the flow of gas.

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: 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.