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| Number | Title | Issue Date |
| 4641768 | Teeming apparatus and method A molten metal teeming valve of the sliding gate type is equipped with means for the injection of gas for various purposes including refractory preheating, lancing, or cooling, etc. The gas injecting apparatus is arranged within the valve organization in ... | 02/10/1987 |
| 4628869 | Variable temperature waste heat recovery system A system for recovering the waste heat normally exhausted in the atmosphere by blast furnace stoves or other variable temperature process heaters. The system comprises a heat exchange apparatus located in the exhaust stack, heat transfer means for carryin... | 12/16/1986 |
| 4612120 | Axisymmetrical separator for separating solids and gas from a fluid medium A dimensionally compact centrifugal separator having no moving parts is described that is effective for separating entrained solids and gases from a liquid in order to cleanse the liquid. The internal configuration of the apparatus is such as to effective... | 09/16/1986 |
| 4610408 | Strip feed mechanism Apparatus is described by means of which sheet metal strip, unwound from a coil construct having a vertical axis of rotation, is fed to a strip processing station at regulated rates. The feed rate control mechanism is particularly adapted to accommodate s... | 09/09/1986 |
| 4597514 | Sliding gate valves and components thereof Gates for sliding gate valves in which refractory elements are cemented within metal enclosure trays include an inner refractory member that contains the metal pour opening and an outer refractory member that surrounds the inner member. Only the inner mem... | 07/01/1986 |
| 4579461 | Dual sensor radiation pyrometer A pyrometer for determining the temperature of a surface in the presence of reflected radiation has two infrared radiation sensors, each responsive to different wave length, positioned to receive radiation from the surface. An adjustment factor is develop... | 04/01/1986 |
| 4565353 | Apparatus for suppressing fume from a metal pouring operation Method and apparatus for the suppression of fume from a body of molten metal is described. The method involves the blanketing of the molten metal bath with a mixture of pressurized inert gas and finely divided or atomized particles of water. The inert gas... | 01/21/1986 |
| 4545512 | Full throttle valve and method of tube and gate change A sliding gate valve of the type in which refractory gates are sequentially disposed in operative position beneath the pour opening from a teeming vessel, such as a tundish, is effective to controllably throttle the metal flow stream from the vessel. Oper... | 10/08/1985 |
| 4543981 | Sliding gate valves In order to resist alteration of the spring forces utilized for applying seal pressure between the valve bodies in sliding gate valves for molten metal pouring, particularly those of the manually operated type, the valve support plate and the mounting pla... | 10/01/1985 |
| 4494462 | Thaw shed heater Heating apparatus is described that is particularly adapted for thawing frozen particulate material in railroad hopper cars. The apparatus is a low profile, fuel-fired heater adapted for installation between rails traversed by the hopper cars within a tha... | 01/22/1985 |
| 4486230 | Method for suppressing fume from a metal pouring operation Method and apparatus for the suppression of fume from a body of molten metal is described. The method involves the blanketing of the molten metal bath with a mixture of pressurized inert gas and finely divided or atomized particles of water. The inert gas... | 12/04/1984 |
| 4458883 | Molten metal fume suppression A method is described for suppressing fume generated in the transfer of molten metal to a receiver. The involved method entails burning fuel in the immediate vicinity of the molten bath within the receiver to consume and/or displace ambient air thereby to... | 07/10/1984 |
| 4457459 | Valve suitable for controlling teeming from furnace tapholes Metal flow from furnace taphole to a pouring trough is controlled by a valve interposed therebetween, the valve having a stationary orificed valve plate and a companion slide plate for closing or opening the orifice to flow. An actuating beam member formi... | 07/03/1984 |
| 4445262 | Procedure for rebuilding the movable plate in the pouring valve of a ladle Procedure for rebuilding a movable plate in the pouring valve of a ladle, involving the complete reconstruction of the original nozzle, which has been removed, and of a flat portion, also removed, around the pouring hole, in a circular or rectangular area... | 05/01/1984 |
| 4434540 | Process for repairing or modifying refractory plates of ladle casting cassettes Techniques are disclosed for renovating sliding gate valve plates or for adapting conventional plates for use with problem-beset metals. Stationary plates (1) have their orifices (2) bored out to downwardly-tapering form and correspondingly tapered prefab... | 03/06/1984 |
| 4429816 | Union for providing inert gas between teeming nozzle and pouring tube In submerged teeming operations the extended pouring tube which receives molten metal from a vessel via a nozzle has gas admitted thereto for protecting it against molten metal attack. A union block is sandwiched between the nozzle and pouring tube, block... | 02/07/1984 |
| 4421256 | Sliding gate valve having adjustable seal pressure A sliding gate valve mechanism for use in teeming molten metal is provided with apparatus for accurately setting seal pressure between the valve plates and for adjusting the seal pressure during periods of valve operation. The invention enables such adjus... | 12/20/1983 |
| 4421257 | Metal pouring nozzle with gas inlet A metal pouring ladle furnished with a sliding gate valve has a bottom pour opening fitted with a well block and a nozzle seated in the lower portion thereof, the well block and nozzle forming a flow passage leading to the valve. For introducing gas to th... | 12/20/1983 |
| 4415103 | Full throttle valve and method of tube and gate change A sliding gate valve of the type in which refractory gates are sequentially disposed in operative position beneath the pour opening from a teeming vessel, such as a tundish, is effective to controllably throttle the metal flow stream from the vessel. Sepa... | 11/15/1983 |
| 4402492 | Burner apparatus for molten metal fume suppression Apparatus is described that is particularly adapted for suppressing fume generated in the flow of molten metal through the runner system of a blast furnace cast house. Burners adapted for combusting fuel and air are disposed at longitudinally spaced locat... | 09/06/1983 |
| 4386765 | Composite moulded refractory articles A sliding gate valve slide plate in a can has an integral collector nozzle and is formed as two conjoined refractory concrete mouldings with a cup or trough shaped metal foil lying in the joint therebetween. The foil is oxidisable in service to form a bon... | 06/07/1983 |
| 4370087 | Dumping apparatus for particulate-bearing container Mechanical dumping apparatus is described that is adapted for use in a zinc powder galvanizing system. The apparatus is effective to confine the powder during the dumping operation in order to minimize operator exposure to the harmful effects thereof. Mec... | 01/25/1983 |
| 4369802 | Wire galvanizer cooler Plural strands of wire emerging from the cooling tower of a galvanizing line are cooled from about an elevated temperature to ambient temperature by heat exchange apparatus in which the strands are passed through an agitated, flowing stream of cooling wat... | 01/25/1983 |
| 4358034 | Sliding gate valve with orifice-encircling spring Apparatus for applying a clamping force to slide gate valve plates to prevent leakage of molten metal therebetween. The apparatus applies the force uniformly about the annulus of the orifice of the plates and at a location close to the orifice itself, thu... | 11/09/1982 |
| 4353688 | Baffle structure for blast furnace stove A hot blast stove for use with high capacity blast furnaces incorporates a gas flow baffle particularly configured for improving mixture of combustion air and gas within the combustion chamber to enhance fuel burning characteristics with a concomitant red... | 10/12/1982 |
| 4342487 | Automatic roof bolting drill retention apparatus A drill steel support assembly for a mining roof bolting machine is presented. The assembly is utilized for retaining and guiding a drill steel on a roof bolting machine during the collaring of the drill steel in the mine roof. Once collared, the drill st... | 08/03/1982 |
| 4332085 | Rope helix gage Apparatus is described for mechanically determining the helix height of a preformed strand containing a plurality of helically wound wires for use in the production of wire rope. The apparatus includes a base support for maintaining the dimensional integr... | 06/01/1982 |
| 4323529 | Method for making a refractory article Method for making a refractory valve is disclosed. The sliding gate valve slide plate in a can has an integral collector nozzle and is formed as two conjoined refractory concrete mouldings with a cup or trough shaped metal foil lying in the joint therebet... | 04/06/1982 |
| 4316561 | Pour tube latching apparatus Apparatus is described for attaching a shroud tube to the pour nozzle of a sliding gate valve, or the like, from a remote position. The apparatus is also effective to impart compound movement to the shroud tube for inserting the end of the tube into the o... | 02/23/1982 |
| 4304370 | Strip feed mechanism Apparatus is described by means of which sheet metal strip, unwound from a coil construct having a vertical axis of rotation, is fed to a strip processing station at regulated rates. The feed rate control mechanism is particularly adapted to accommodate s... | 12/08/1981 |
| 4304371 | Peeling tool for integrated strip in a sheet metal coil construct A tool is described which is particularly adapted for detaching by peeling sheet metal strip from a wound construct containing a plurality of coiled strips interconnected by intermittently spaced tabs that bridge the parting lines between adjacent strips.... | 12/08/1981 |
| 4296556 | Rod cooling box air wipe nozzle An air wipe nozzle for removing water from a rod as it emerges from a water cooling tube in a rod mill is provided. The air nozzle includes a tubular head through which the rod passes, the header having a plurality of passages terminating in openings spac... | 10/27/1981 |
| 4290289 | Spacial alignment method for rolling mill rolls and chocks A method of aligning each of the rolls in a rolling mill such that each of the axes of rotation are substantially parallel to one another and do not present a crossed-roll condition. The alignment method does not involve the disassembly of the chock arran... | 09/22/1981 |
| 4285475 | Mechanical feed-up of web material on a recoiler Method and apparatus are described by means of which the slitting head in a slitting line for severing sheet metal web material into strips is utilized to transfer the leading end of the web material from the uncoiler to the recoiler for attachment theret... | 08/25/1981 |
| 4285617 | Duct and flop-gate construction and method of handling dust or other particulate material A duct and flop-gate construction for handling particulate material and a method of handling dust or other particulate material. The collected material drops down a duct which contains a flop-gate for directing the material to either of two bins. A mild c... | 08/25/1981 |
| 4279140 | Mill roll balance system A mill roll balance system for incorporation within a rolling mill is provided. The balance system includes a rigid beam assembly for guiding a portion of the mechanism utilized to stabilize the top roll and for preventing any resultant horizontal forces ... | 07/21/1981 |
| 4277312 | Ascension pipe cleaning apparatus Apparatus is described for cleaning the interior of gooseneck elbows of coke oven ascension pipes. A powered cleaning mechanism carried by the coke oven larry car is mounted on a platform that is reciprocably movable between the larry car and the elbow to... | 07/07/1981 |
| 4269266 | Recuperator tube construction A recuperator which includes vertically extending outer tubes and respective inner tubes within the outer tubes. Hot waste gases flow around the outside of the outer tubes. Air to be preheated flows through the inner tubes and annular passages between tub... | 05/26/1981 |
| 4267984 | Method and apparatus for separating strip coil from wound construct by rotation Apparatus and method are described which are effective for detaching a coiled strip from a wound construct containing a plurality of coiled strips interconnected by intermittently spaced tabs that bridge the parting lines between adjacent strips. The appa... | 05/19/1981 |
| 4267985 | Strip separator and payout apparatus Apparatus is described for detaching a coiled strip from a wound sheet material construct containing a plurality of coiled strips interconnected by intermittently spaced tabs of partially sheared material that bridge the parting lines between adjacent str... | 05/19/1981 |
