Abstract: A door seal especially adapted to for use in a high temperature furnace wherein a sealing gas is controllably introduced between confronting surfaces of the door and the furnace to establish a gas barrier against leakage of cover gas from within the furnace chamber and leakage of air into the furnace chamber.

Abstract: An improved coke oven sealing apparatus which is adapted to constantly maintain secure contact of the door with the door sealing frame. With respect to the door sealing frame, it is adjustably constructed so as to maintain its outer surface for receiving knife edge constantly vertical. While the door is constructed so that it may not be subjected to thermal bend, the knife edge can be effectively held and adjusted by spring units; and the holding rods are mounted through bracket at regular intervals on the outer side of the side walls of the metallic door body. The knife edge is made broader and thinner than conventional ones.

Abstract: Apparatus for providing a good seal between sealing edges and sealing surfaces of a coke oven door includes an improved high temperature resistant, compressible and deformable sealing member between the sealing edge and sealing surface. The sealing member includes a layer of high temperature resistant compressible insulating material between an outer layer of steel foil and a perforated steel strip. In one embodiment there is a second layer of insulating material between the perforated steel strip and a second outer layer of steel foil.

Abstract: A coke oven door seal of the disclosure includes a metallic diaphragm plate of a vertically elongated rectangular shape and metallic seal members mounted on the edge portions of the plate in a manner that permits thermal expansion of the seal members along their lengths with respect to the plate edge portions. Preferably, each seal member has an integral channel shape, and first and second aligned sets of holes in the plate edge portions and the bases of the seal members receive attachment bolts for mounting the seal members with their bases engaged with an inner side of the diaphragm plate. One of the sets of holes is oversized along the length of the seal members to permit the thermal expansion thereof with respect to the plate. Best sealing is achieved when the oversized set of holes is in the seal member bases so that the attachment bolts do not move during seal member expansion.

Abstract: Construction of coke oven door which is characterized in that there is mounted an adiabatic layer on the inner surface of a base plate of a metallic door body in addition to conventional adiabatic door plug, the inner surface of the adiabatic layer being provided with a guard plate. A frame-like knife edge is installed on the periphery of the guard plate, the knife edge being formed at suitable intervals with U-shaped slots on the base plate side. The knife edge is further formed with pairs of projections on its outer surface on both sides of the U-shaped slots. A plurality of adjustable spring units are equipped on the side walls of the metallic door body and a hook lever, whose upper end ring portion is fitted on the upper end of the spring units and whose lower end hook engages with the projections, is arranged alongside the spring units.

Abstract: A damper assembly for high temperature or corrosive gases including a flow through housing with a damper blade disposed therein, the damper blade including a metallic plate member attached to a transversely extending support member which extends through openings in the side walls of the housing. The plate member includes means for receiving refractory thereon wherein the refractory substantially covers the plate member and is divided into a plurality of preselected sections, each section being separated by a material having a relatively low disintegrating temperature whereby upon initial heating of the damper assembly to temperatures higher than the disintegrating temperature of the relatively low disintegrating material, the said material disintegrates thereby leaving spacing in the refractory for expansion and contraction over a wide range of temperatures.

Abstract: A closure assembly for a furnace wall in which a plug member is secured to a shell member which, in turn, is pivotally mounted to the furnace wall. The plug member is formed from a cast ceramic fiber tamping mix of bulk fiber and high temperature inorganic binders and has a relatively low density. A centrally located stepped bore extends through the plug member for receiving a rod to the interior face of the shell member. A fastening means engages the rod for securing the plug member relative to the shell member and an insert formed from the same material as the plug member is fixed in the bore hole.

Abstract: A sealing arrangement for a door of a coke oven chamber includes a fluid channel around the door carrying gases from a coke oven chamber. Means is provided that subdivides the channel into separate fluid channelways and means is provided for conducting the gases from each channelway into an adjacent end heating flue in the heating walls defining the coke oven chamber.

Abstract: A coke oven door has a primary seal that includes a first metal knife edge in contact with a door jamb first sealing surface, and a secondary seal that includes a second metal knife edge in contact with a door jamb second sealing surface. The plenum or space between the sealing knife edges is maintained at super atmospheric pressure by flowing coke oven gas into the plenum. In a modification of the invention, the secondary seal includes a metal strip in contact with an elastic material; the plenum between the sealing surfaces being also pressurized above atmospheric pressure and purged of coke oven gas.

Abstract: A tunnel autoclave having guillotine doors at opposite ends has sections of rail fixed to the said doors so as to be aligned with guide rails extending through the said autoclave when the doors are in the open position.

Abstract: An improved method and apparatus for by-product coke oven operation wherein the problems of pollution caused by gases leaking out of the oven during the coking cycle are eliminated by providing an improved coke oven door using the metal-to-metal contact principle. Because of thermal conditions the distortion of the jambs and the distortion of the doors themselves takes place thus making the sealing of coke oven doors very difficult; this in particular is very serious with respect to high ovens. This distortion being of such form that the distortion of the jamb occurs in the opposite direction of the distortion of the oven door. This invention compensates for such distortion and makes possible the proper fit up of the door to a particular jamb irrespective of the degree of distortion.

Abstract: An improved coke oven leveler door which is constructed from a mild steel plate having substantially flat inner and outer faces with the inner face adapted to selectively close a leveler opening included in the coke oven main door. Support members are rigidly affixed to the outer face of the door and disposed to extend generally radially outward from the central portion of the outer face. Means are also included on the outer face for mounting the door in operative communication with biasing means to place a continuous biasing force against the door at least when it is in a closed position. The inner face of the door includes knife-edge like sealing means protruding outwardly therefrom for sealing the door when it is in a closed position. The configuration of the knife-edge sealing means is such to enhance leveler door sealing during a coking operation.

Abstract: A leveler door for sealing the leveler opening in a coke oven door; the oven door of the type having leveler door mounting and latching apparatus associated therewith. The leveler door comprising a flexible closure member possessing spring-like properties at elevated temperatures and having a generally concave shape, terminating in a flexible sealing edge at its outer periphery. The sealing edge is formed at an angle of less than 90.degree. relative to the plane of the leveler opening. Means for securing the closure member to the mounting and latching apparatus of the coke oven door are disclosed, whereby the compressive closing force supplied by the mounting and latching apparatus causes the concave closure member to move toward the leveler opening causing the sealing edge to concurrently flex outwardly from the leveler opening while sealably engaging the coke oven door adjacent the leveler opening.

Abstract: An improved by-product coke oven wherein the ends are heated through the doors or jambs to prevent condensation of the tar and the deposit of carbon and coal. This improved coke oven possesses improved sealing features and minimizes pollution during coking and during the extraction of the doors.

Abstract: Prior to the present invention, there has not existed any equivalent to the present furnace door for a porcelain furnace in which door there is provided a lineal passage for alternate insertion of an opaque insulator insert and a viewing structure defining a lineal see-through channel having a transparent heat barrier at an outer end thereof utilizing air space within the channel extending to an interior-furnace end for insulating air, and an outer end of the passage defining female step(s) and the respective inserts each respectively including a male step(s) which mates flushly with the female step when inserted to provide an improved heat seal for the inserts each respectively.

Abstract: A coke oven door, having a sealing ring that coacts with a plurality of spring plungers, is provided with a plurality of equalizing pads located between the top and bottom latches to ensure that the sealing ring is seated at these locations. Also the sealing ring is installed in slots in the door frame which are open at both ends.

Abstract: Apparatus for feeding waste material including pathological or highly infectuous waste into an incinerator combustion chamber through an access opening in the top thereof and being characterized by a construction which substantially prohibits the escape of fumes, smoke or particulate matter from the incinerator. The feeding apparatus includes a generally vertically extending, enclosed, stationary chute in communication with the incinerator access opening. A cover door is mounted on the top of the chute for being opened to insert the waste material and for being closed to cover the chute. An interior door is mounted within the chute for being closed to close the passageway through the chute and for receiving and holding the waste material inserted into the chute when the cover door is opened and for being opened to allow gravity feeding of the waste material into the incinerator combustion chamber when the cover door is closed.

Abstract: An apparatus for disposing of waste by means of complete combustion including an endless moveable track for conveying the waste through the apparatus, means for depositing the waste on the track, a furnace system for burning the waste, and means for removing any resulting residue from the track.

Abstract: A combined kiln and lid prop in which the kiln has an upwardly opening lid pivotally mounted thereon, said prop being pivotally mounted on the kiln and having an upwardly extended propping position in which it is releasably retained by resting the lid thereon, an outward reclining position, and a center of gravity in the propping position outward of the pivotal mounting thereof so that the prop automatically pivots to the reclining position when the weight of the lid is removed therefrom allowing the lid fully to close.

Abstract: A coking oven has an upright wall formed with an opening which is normally closed by a door past which noxious gases escape at least at times. Outwardly adjacent the opening and the wall are formed one or more upright channels having open ends located below and above the level of the opening, respectively, and being so positioned that escaping noxious gases can enter into this channel or these channels. Arranged adjacent the upper open end or ends is a suction conduit provided with apertures through which the gases can be drawn from the channel or channels to be conveyed in the conduit.

Abstract: A coke oven door lifter for a coke oven door, having a horizontal support bar and a spring biased locking bar, includes a lifter housing or frame having a vertical trackway therein. A movable member is guided in the trackway for vertical upward and downward movement and it carries a support arm which is engageable with the horizontal support bar of the coke oven door to lift it when the movable member is moved upwardly. A locking bar release member comprises a piston displaceable in a fluid pressure controlled cylinder which is displaced after the movable member is moved upwardly to contact and disengage the locking bar. The movable member is moved by a piston movable in a fluid pressure cylinder after the lifter housing or frame is moved into association with the door.