Abstract: Means for cleaning the sealing surfaces of coke oven leveling doors and frames, the cleaning means being installed on a coke-pushing machine without any increase in the normal overall length thereof. A carriage extends between and is movable along guideways mounted on the side walls of a surrounding casing, the carriage being provided with liquid nozzles adapted to be directed at the sealing surfaces of the leveling door frame and the sealing surfaces of the leveling door when rotated upwardly. Nozzles are connected through hoses to a supply of high-pressure liquid, the arrangement being such that as the carriage moves along the guideways, high-pressure liquid issuing from the nozzles will clean the sealing surfaces of a leveling door frame and a leveling door when it is rotated upwardly.

Abstract: A coke oven door comprises a flat sealing diaphragm which is secured between and spaced apart from the door body and the door plug and is provided on its periphery with sealing knife edges which project against the door frame. The sealing edges are pressed against the door frame by bias adjustable springs, through spring loaded plungers. The door plug is formed by a plurality of individual plug elements closely adjacent to each other and supported by associated plug holders, and the sealing diaphragm is firmly screwed in place between the door body and the plug holders only in the upper and lower zones or areas of the door. In the intermediate zone, the diaphragm is connected to a back-up plate and to the plug holders and held adjustably spaced apart from the door body.

Abstract: A door structure for coke oven is disclosed which includes at least two locking head rails and having a door body which is continuously made of a flexible and elastic material. According to this invention, the material of the door body and the sealing membrane or its compression elements are dimensioned such that ratio of the rigidity of the door body to the specific contact pressure of the sealing membrane is so small that the thermal deformation of the body is compensated mainly by the combined locking forces exerted by the head rails and by the contact forces exerted by the sealing strip.

Abstract: A fixed bed gasifier has an annular series of spaced pokehole units thereabout, each unit of which is an outwardly and upwardly extending tapered tube with an end closure having an eccentrically positioned hole through which a poker may be inserted to pass through the unit for poking the fire zone of the gasifier. The tapered tube opens the gasifier vessel at the reduction zone. The hole at the end closure is closed when not in use by a movable closure that is opened only when the poker is to be inserted. The movable closure is connected with an air valve that admits atmospheric air from a manifold encircling the gasifier, at a pressure slightly above the internal pressure in the gasifier, to the interior of the unit as the movable closure is operated to expose the hole at the end of the unit, forcing hot gases in the unit back into the gasifier in the reduction zone, and permitting air only to blow out the end of the unit just before the poker may be inserted and until the pokehole is again covered.

Abstract: A sealing frame of generally Z-shaped cross-section, extending all around a peripheral flange of a coke-oven door, has an inner rim hugging that flange and a cantilevered web resiliently bearing with a free knife edge upon a door frame of an associated coking chamber. The rim is held against the door flange by recessed clamping plates which are shiftable, together with the sealing flange, in a direction perpendicular to the door opening under pressure of cams on the inner surface of a multiplicity of retaining disks overhanging these plates with shafts rotatably lodged in the door flange.

Abstract: A cast ceramic hearth door and frame which provides a one-piece ceramic frame with provisions for a door to be slideably disposed within the one-piece frame.

Abstract: A closure and seal construction for a high-pressure oxidation furnace and the like having a quartz chamber and an integral quartz wall formed with an opening for receiving into the chamber material to be processed, the wall providing an annular surface surrounding the opening and being formed with an annular recess in the surface surrounding the opening; a combined cooling and sealing tube mounted in the recess and protruding slightly therefrom; a closure mounted for engagement with the tube and wall surface; and the tube having an elasticity responsive to a closing pressure to resiliently retract and provide simultaneous sealing engagement of the closure with the wall surface and tube.

Abstract: A heated chamber having at least one opening; closure means for closing said at least one opening, said closure means having at least a closed and open position; said closure means and said opening having surfaces disposed for coming into proximity of one another in said closed position, said surfaces forming a primary sealing means for said heated chamber in said closed position, there being a substance applied to at least one of said proximate surfaces, said substance having a property of expanding upon the application of heat thereby forming a secondary sealing means between said proximate surfaces in said closed position.

Abstract: A seal for an access door (44) mounted on a combustion chamber of a fluid heater includes a gasket pad (56) that is sealed to the interior surface of the door (52) by adhesive material. The gasket pad is secured to the door by first applying adhesive material to the interior surface of the door and the gasket pad. Thereafter, the gasket pad is attached to the coated area on the door covered by adhesive material.

Abstract: In a coke oven of the type having a plurality of filling shafts with openings and caps therefor at the oven roof, in order to reduce the temperature gradient and heat losses at the roof of the coke oven, the caps of the filling shafts are each directly mounted on fire-resistant brickwork rather than a metallic frame; also, the associated caps are each made of ceramic material with optional reinforcement and include a metal insert which is heat insulated from the oven by a heat barrier. The metal insert facilitates magnetic hoisting of the cap during unloading and loading of the oven and is provided with an adjoining layer of fired clay and felt. The engaging surfaces of the cap body and the brickwork of the filling shaft opening are preferably conical and define an annular recess on the outside for pouring cement or the like to secure the cap in position and seal off the shaft.

Abstract: A door is mounted on a carrier to move back and forth with the carrier between open and closed positions relative to a furnace doorway and to move inwardly relative to the carrier to seal the doorway. Bearing means engage the outer side of the carrier to support the carrier with rolling friction and to sustain the outward thrust which is imposed on the carrier when the door is moved inwardly to seal the doorway. The bearing means comprise a single spherical ball which is captivated in a cage to roll back and forth when the carrier is shifted and, at the same time, to spin universally about its own center.

Abstract: An improved access port structure for a vessel, such as a coal gassification furnace, in which a closure member is mounted for movement, on the vessel to open or close an opening, a means of providing a steam vortex flowing into the opening to prevent the escape of gases from the vessel, and an interconnection to the steam supply to assure that the vortex is operating prior to the opening of the closure member.

Abstract: A jamb brick support for a coke oven door is provided at the bottom of the door body on the side facing the oven chamber and supports at least the lower part of the refractory door stopper and, with the door set in place, extends closely above the oven sole and the oven sole plate of the chamber frame.

Abstract: Door structure is provided for a wood-burning stove which is less susceptible to warping in use than a conventional flanged stove door opening. The door opening is formed by a process of cold drawing or extruding a rounded lip or flange which is integral with the stove front plate. Internal door structure provides angulation of the door with respect to the stove front plate.

Abstract: An improved furnace is provided for growing crystalline bodies from a melt. The improved furnace is characterized by a door assembly which is remotely controlled and is arranged so as to selectively shut off or permit communication between an access port in the furnace enclosure and a hot zone within that enclosure. The invention is especially adapted to facilitate use of crystal growing cartridges of the type disclosed in U.S. Pat. No. 4,118,197.

Abstract: A veneer block moisturizing vault which has a single upright openable end which is closeable and exposeable through vertical shifting of a rigid unitary door. The lateral margins of the door are received in confronting channels, which, together with the door's margins, provide an effective lateral moisture barrier inhibiting the escape of steam from the vault when its door is closed. With the door closed, the bottom edge of the same rests snugly upon a specially prepared cement apron--also to effect a steam-capturing moisture barrier. Moisturizing in the vault is accomplished through the controlled blending and injection thereinto of steam and cold water.

Abstract: A coke-oven door assembly has a doorjamb having an outwardly facing annular doorjamb surface. A rigid door body has an annular outer edge aligned with and generally perpendicular to the doorjamb surface and is provided with an annular and hollow rigid frame juxtaposed with this edge and limitedly displaceable relative to the door body. An annular seal strip engages the door edge and bears inwardly on the doorjamb surface. A rail is movable inside the frame toward and away from the doorjamb surface and a plurality of elastically compressible biasing devices are engaged between the rail and the seal strip to urge the latter toward the doorjamb surface. A plurality of spacers extending from the doorjamb are engaged with this rail, normally via respective plungers, so that the biasing force effective on the seal strip remains the same even if the door body is distorted by the effects of heat.

Abstract: A door closure construction for sealing the sealing edge of a coke oven door in a coke oven having an opening with an outer rigid frame bounding the opening, comprises an adjustable inner frame which fits into a recess of the outer frame and may be adjustably positioned in respect thereto and in respect to the sealing edge of the coke oven door.

Abstract: An incinerator having a generally cylindrical, horizontally disposed shell enclosed at its ends by vertical end plates and defining a combustion chamber. The upper sector of the shell is provided with a feed opening for introducing combustible waste into the housing and the opening extends continuously between the opposite end plates. Enclosing the feed opening is a generally curved door, the lower portion of which is hinged to the shell so that the door can be pivoted between a closed and open position. The gases of combustion are discharged from the combustion chamber through a stack and the upper portion of the shell bordering the stack can be formed with an enclosed heating jacket through which a heating medium can be circulated. Heat from the combustion of waste will act to heat the medium and the heated medium can be used for auxiliary heating purposes.

Abstract: A door having a sealing structure for sealing space between the door and frame of a furnace, which may be used for various types of furnace such as coke ovens. The sealing structure comprises pressing means and sealing means. A slip plate is provided between the door surface and a spring leaf constituting the sealing means. The slip plate, the spring leaf and the pressing means are adapted to slide integrally to cause a knife edge attached to a free side of the spring leaf to abut against the furnace frame.

Abstract: A sealing arrangement for a coking oven chamber is disclosed including a door selectively movable between opened and closed positions and a door frame surrounding the opening to the chamber. In the closed position, the door body faces the door frame and is spaced therefrom to define a sealing channel. A fluid sealing substance is injected into the channel through the door body while the door is closed. Inner and outer sealing strips may be provided on the door body to define the lateral confines of the sealing channel.

Abstract: A door jamb construction for a coke oven in which the vertical legs of the jamb are essentially rigid in a direction parallel with the oven wall but flexible in a direction normal to the wall. The buckstays of the oven carry spring means which force the flexible legs into contact with the oven wall.

Abstract: When repairing a gate and vicinity of a coke oven chamber during operation, hot air blowing off the interior of the chamber makes repairs impossible or almost difficult. Disclosed is a temporary heat-proof apparatus capable of preventing such hot air from blowing off the chamber, which generally comprises two units in combination, viz. a heat-proof unit and a charging unit therefor. Both front end portions of the heat-proof unit are expandable toward side walls of the oven chamber, while upper and lower slide frames are arranged respectively to pressure-contact the ceiling and bottom of the chamber.

Abstract: A coke oven door assembly includes a door body having a plurality of plates vertically disposed in series. Refractory blocks attached to the plates include overlapping side portions in spaced relationship with their adjacent ends. The plates are tiltingly interconnected with each other.

Abstract: In thermal regenerative apparatus having at least one heat-exchange section which includes a plurality of ceramic refractory elements, an upstanding hatch is provided to permit additional elements to be inserted after settling of the original charge due to wide temperature fluctuations, the gas flow through them, etc. The hatch has lower, outwardly-angled surfaces to facilitate downward and outward movement of the ceramic elements as they settle thereby preventing gas flow bypass in clearances above the elements. A light cover for the hatch has a lower, flexible metal surface that enables it to maintain sealing contact despite high-temperature effects on it.

Abstract: Apparatus is provided for support of a self-sealing door on a horizontal coke oven and for guiding installation of the door on the oven. A single pair of hangers are provided for attachment to the oven adjacent opposite vertical sides of the door opening. At least one axially rotatable member is mounted on the door for engaging the hangers and providing movement of the door therealong in a horizontal direction toward the oven. The axially rotatable member is located in a position on the door so that the door will be suspended in a completely vertical attitude on the hangers and may then be rolled into contact with the frame at repeatable, accurate positions to obtain better sealing.

Abstract: The improved furnace of this invention may be used to produce heat by the burning of wood or other combustible matter. The furnace has a combustion chamber with a generally vertical axis and a chamber access door for loading combustible matter into the furnace. The access door in its normally closed position lies in a plane extending upwardly and outwardly from the axis of the chamber. A smoke limiting means which is positioned above the access door extends to the plane of closure of the door. This smoke limiting means limits the escape of smoke and other combustion products when the access door is open. The smoke limiting means may have a port for visually observing the interior of the chamber and for admitting a poker therein. An air injector extending through the door directs air to the burning material within the combustion chamber. The access door may have attached to it a grate extending into the chamber for holding the combustible material as it burns.

Abstract: A plug for protecting coke-oven chamber doors from the action of the internal temperature in the oven, which has a plane outside facing away from the door body, and which is built up from a plurality of refractory bricks and can be mounted on the inside of the door body. The bricks have recesses which each penetrate the plug and bricks for receiving bolts which can be screwed into bores in the plug side of the door.

Abstract: Apparatus and method for closing bottom-entry slab furnaces in which a door is pivotably connected to the slab elevator by a horizontally arranged hinge. The door is provided with a cam follower that cooperates with a cam apparatus to controllably swing the door between closed and open positions as the door is moved vertically past the cam apparatus.

Abstract: A latch mechanism for coke-oven doors, which mechanism includes combination radial thrust bearings for the latch bars. These bearings afford adjustability in all directions for the latch bars to enable force to be applied uniformly to the sealing strips which extend around the perimeter of the door.

Abstract: A furnace is provided which is capable of heating a circulating current of air by heat produced from the combustion of either solid or fluid fuel. The furnace is constructed with two separate combustion compartments and a surrounding chamber for circulation of the air to be heated. By means of temperature sensor and control means, the fluid fuel supply is stopped when adequate heat is being produced from the solid fuel. The furnace is adapted to heat remotely located rooms by means of conduits which transport air heated within said chamber. The room in which the furnace is located is heated by the front of said furnace by radiation and convectively heated contiguous air. The compartment which combusts solid fuel is provided with a door on the rear of said furnace, thereby permitting wood to be entered into said compartment from outside the room or building in which said furnace is situated.

Abstract: A sealing means for a coke oven chuck door. The sealing means includes a metal sealing member which has springiness and flexibility and is supported cantilever fashion on the inside of the door frame. An insulation block is interposed between the sealing member and door frame. The sealing member has a knife edge flange which extends around its perimeter and is automatically aligned with a sealing surface on the main door on which the chuck door is mounted.

Abstract: A poke hole closure assembly for a gas producer which minimizes the escape of noxious or volatile gas from the producer during a poking operation. The closure includes a block having an aperture therethrough which communicates with a poke hole in a gas producer. A closure plate is hinged to the block to block the aperture and pole hole during normal operating conditions, but is openable to enable a poker to be inserted therethrough to check the fire bed. An inert gas is delivered to a conical nozzle in the aparture to direct the gas into the poke hole, to thereby block the outward passage of noxious or volatile gas from the poke hole when the closure plate is opened. The flow of the inert gas is controlled by a valve which is opened to allow flow upon opening of the closure and is closed to block flow when the closure is sealed.

Abstract: A warp-resistant doorjamb is mounted next to the refractory at the outer end of a coke oven chamber. The doorjamb includes a rectangularly-shaped frame with end segments joining together two side segments each having a length substantially corresponding to the height of the coke oven chamber. Both side segments have an outwardly-extending rigid beam section with openings to releasably engage with hanger bars on a coke oven door. A plurality of web sections extends at spaced-apart intervals from each rigid beam section to define window openings between the web sections to minimize the conductive transfer of heat to the rigid beam section and dissipate heat to the atmosphere. A base plate section extends along the end and side segments and forms a face surface for mounting next to the refractory of a coke oven chamber. The base plate section is divided by transverse slots into individual base segments each joined with at least one of the web sections for the support thereby.

Abstract: A coke oven door having a refractory plug with vertical gas channels on each side, each channel having a plurality of tributary vents originating at the face of the plug normally exposed to a relatively high pressure area and leading upwardly to the vertical gas channels at about a 30.degree. angle to permit reduction of the gas pressure through the channels, behind the door seal.

Abstract: A method for sealing a by-product coke oven in which a silicone material is caused to foam to form a foaming silicone composition preferably by mixing a first mixture of organohydrogensiloxane and hydroxylated organosiloxane with a second mixture of organohydrogensiloxane most desirably with a platinum catalyst, and heating the mixture to provide a volumetrically expandable foam. The volumetrically expandable foam is sprayed around the periphery of coke oven doors, slip-joints and similar points of gaseous emissions where it undergoes a foaming acting in the presence of the heat of the oven such that the foam volumetrically expands to provide a seal that prevents the emission of gas, dust, and smoke during the coking cycle.

Abstract: A fire door assembly for providing access to an enclosed space such as a furnace, fireplace, duct, tank or cistern including a movable flap having peripheral portions which can be positioned flush against a wall so as to close an access opening. A gasket or seal is provided along the access opening on the face of the outer wall.

Abstract: A closure for an opening into a combustion chamber or a distillation chamber which tightly seals said opening. The closure has a central portion with a lip at its periphery having at least one sealing surface thereon. A member adjacent to the opening has a seat portion located out of proximity of said opening which contacts the sealing surface of the lip when the closure is closed. A hinge mechanism mounting the closure adjacent to the opening and permitting removal of the closure from the opening and a locking lever supported adjacent to the opening to force the sealing surface of the lip against the seat portion to seal the opening when the closure is closed. The seal is located out of proximity of a passageway in communication with the opening.

Abstract: A coke oven construction for the fastening of furnace door frames to the armor of horizontal, blockwise arranged coke oven furnaces, comprises a furnace which has an armor plate with a portion offset inwardly toward the furnace which carries a furnace frame which is sealed to the armor plate. A metal plate overlies the portion of the armor plate which extends outwardly from the frame and it has an edge which projects from the armor plate in a direction toward the frame. A hooked member is engaged over the edge of the plate and an eye bolt is threaded into the hooked member and provides a bolt for the pivotal mounting of a toggle which has one arm which bears against the frame and another arm which extends upwardly alongside an anchor stand which is mounted over the plate of the armor.

Abstract: A means for guiding a coke oven door as it is replaced on an oven. The guide means includes bars carried by the door frame for guiding the door accurately to a position in which the sealing members contact a flat surface on the jamb to effect a seal. The forward tips of the guide bars are closely adjacent the forward edges of the sealing members so that the guide bars serve also as stops to prevent overloading of the sealing members.

Abstract: The opening for charging a coking chamber of a coking oven is closed by closure means and a lock chamber is arranged outside the closure means for preventing any emissions from the coking chamber seeping past the closure means to pass to the outer atmosphere.

Abstract: A coke oven door fabricated from steel plate including a rectangular main door plate having inner and outer planar door faces. A pair of side support plates are rigidly affixed to the main door plate outer surface to extend longitudinally therealong adjacent the side edges thereof and a pair of end support plates are similarly mounted adjacent the main door plate end edges so as to form a door support frame. A plurality of gusset members are symmetrically disposed generally about the midpoint of the main door plate outer face and extend from one of the side support plates toward the other across the main door plate outer face. A sealing ring is affixed to the main door plate inner surface and adapted to sealingly engage a door frame when the door is placed over the coke oven opening.

Abstract: In the construction of a plug-type, coke oven door, which plug is fitted with an integral flue or duct for venting of gases, the front and side walls of the plug are constructed so as to provide sufficient thermal conductivity, whereby heat entering the duct, primarily by conduction through the front wall, may readily be transferred to the left and right side walls thereof so as to maintain a desirable high temperature boh within the duct and at the exterior surfaces of the side walls to prevent or significantly decrease carbon accumulation.

Abstract: A knife edge type of sealing means for coke oven doors having edgewise flexibility permitting the knife edge strip to adjust inwardly and outwardly with respect to the plane of the seating surface of the door jamb as the door jamb warps under service conditions due to exposure to oven heat. A number of different forms are disclosed, in several of which the knife edge strip is made up of end-butting or overlapping sections jointed for relative expansive and contractive movement, the strip being tightly held in a transversely slotted retainer support of U-shape in cross-section, which is in turn sealingly secured to a flexible diaphragm member, of either of two forms, attached to the coke oven door. Another form of knife edge sealing strip is partially slotted from the inner edge outwardly while the U-shaped retainer member is expansively jointed.

Abstract: A slot furnace has a radiation resistant door which can easily be opened and closed as necessary during operation. The door is mounted on a pivot so that an end thereof covered with heat resistant insulation can be pivoted to open and close the slot when desired, to allow ease of feeding and removing materials from the furnace while preventing substantial radiational heat loss during normal operations.

Abstract: A coke oven door lining assembly involving a vented, metallic door lining having barrier and support means serves to lower coke oven gas pressure at the door sealing edges and thereby reduce emissions. The lining may be open or closed along its length. Other advantages of the assembly involve reduced maintenance, simplicity of manufacture, and minimization of the occurrence of dense, hard to remove carbonaceous deposits on the lining.

Abstract: A heating apparatus has a firebox, ash pit and flue enclosed in a casing wherein the fire is maintained toward the rear of the firebox and the ash pit is positioned at the front and below the firebox. The flue connects to a rear portion of the firebox and extends toward the front of the casing and then rearwardly where the fumes are exhausted to the atmosphere. Electrical controls adjustably open a vent located in the front of the ash pit to control the size of the fire by controlling the available oxygen. A fan mechanism circulates fresh air around the firebox and the flue inside the casing to provide a source of heated air for convection heating. The fan is controlled by a temperature controller to maintain the heated air within specified temperature limits.

Abstract: A kiln has a bottom opening for loading the objects to be fired into the firing chamber. The door for closing the firing chamber provides the hearth of the kiln and supports the objects to be fired. A parallel linkage mechanism maintains the door in a horizontal orientation as it is moved from the closed position wherein the objects to be fired are in the kiln, to the open position wherein the objects are supported in front of the kiln.

Abstract: An improved coke oven door frame and jamb assembly wherein the oven front wall which is defined by the frame has an elongated height dimension and the frame and jamb members which comprise the assembly are fabricated from steel plates. The jamb extends outwardly from the outer face of the frame adjacent the peripheral edges thereof outboard of an elongated coke oven door opening included in the frame. The jamb is comprised of a top jamb member, a bottom jamb member and opposed elongated side jamb members which are interconnected to each other at their ends. The frame includes elongated grooves in the outer face thereof adjacent the opposed side edges thereof with these grooves having a width x adapted to receive the side jamb members which have a thickness y. Width x is greater than thickness y in order to provide a clearance area between the groove side walls and the associated side of the jamb members.

Abstract: A sealing means for a coke oven chuck door. The sealing means includes a metal sealing member which has springiness and flexibility and is supported cantilever fashion on the inside of the door frame. An insulation block is interposed between the sealing member and door frame. The sealing member has a knife edge flange which extends around its perimeter and is automatically aligned with a sealing surface on the main door on which the chuck door is mounted.