The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 4091748 | Method and apparatus for producing gas from solid municipal waste Solid municipal waste refuse is pre-treated by partial burning in a moving grate hot carbonizer furnace and then further burned on a reciprocating step-grate stoker in the same furnace chamber. Limited amounts of air are fed to the waste through the grate... | 05/30/1978 |
| 4089278 | Furnace, especially a coal burning furnace, and method of operation A furnace, especially a coal burning furnace, in which the coal to be burned is placed on a grate near the bottom of a combustion chamber. According to the invention, a fan, or blower, has the inlet and the outlet connected to conduits which lead downward... | 05/16/1978 |
| 4089277 | Solid waste disposal An entirely dry, solid waste disposal system is provided which incinerates waste in a manner to minimize pollution and to utilize the heat energy which is a by-product of the incineration. The waste material is shredded and then dried by mixing it with he... | 05/16/1978 |
| 4050388 | Refuse treatment apparatus A known form of refuse treatment apparatus, such as that disclosed in U.S. Pat. No. 3,405,873, is improved by directing the non-pulverized refuse material emerging from the treatment drum to a furnace combusts the same. The heat of combustion is directed ... | 09/27/1977 |
| 4037543 | Pollution free combination carbonization apparatus and furnace A combination carbonization apparatus and furnace for alternatively reducing cellulosic waste such as wood chips and the like to charcoal, or burning said waste completely to produce furnace heat and ash, from which potash may be produced, as desired, the... | 07/26/1977 |
| 4027602 | Combustion system A combustion chamber capable of being directly fueled with green bark, green sawdust and the like material formed of refractory material, the chamber having a grate therein at the feed end thereof disposed towards the bottom of the chamber and a reduced o... | 06/07/1977 |
| 4026224 | Sludge incinerator An incinerator for pasty or sludge-like wastes includes a fixed hearth within its combustion chamber defining a surface for the burning thereon of a layer of the waste material. The surface of the hearth is sloped downwards toward an ash receiving region ... | 05/31/1977 |
| 4023508 | Apparatus to burn waste combustible polymers Apparatus for burning waste polymers of selected combustion characteristics. A vertical or horizontal combustion assembly includes a base cylindrical portion having water-cooled walls to maintain a selected temperature by removal of the heat of combustion... | 05/17/1977 |
| 4020797 | Process and apparatus for using waste heat of refuse burning installations Apparatus for using exhaust heat from burning refuse is described wherein a heat exchanger constructed as a self-supporting unit is mounted, inside an enclosure, directly on the combustion chamber. The heat exchanger consists of at least two co-axial, ver... | 05/03/1977 |
| 4019465 | Furnace design for pulverized coal and stoker firing A boiler furnace that is adapted to burn slag producing pulverized coal in suspended form at the upper end of the furnace in which solid fuel is being burned on a subjacent grate. The boiler furnace has an upright combustion chamber with baffles intermedi... | 04/26/1977 |
| 4019896 | Trash disposal system Apparatus and a method of disposing of trash comprised of a wide variety of constituents including garbage, metals, glass, plastic and other scrap materials, wherein the trash is directed into an incinerator and subjected to high temperatures to reduce th... | 04/26/1977 |
| 4015546 | Apparatus and method for converting refuse to useful energy The preferred embodiment of the invention disclosed herein includes apparatus for and the steps of separating glass, metal and other generally non-combustible material from refuse to provide a volume of generally combustible refuse, shreddingthe volume of... | 04/05/1977 |
| 4009667 | Incinerator for combustible refuse An incinerator having a variable speed auger to continuously feed refuse into and through a combustion chamber and into a water filled ash receptacle. Preheated combustion air is supplied through tangential openings in and along the combustion chamber wal... | 03/01/1977 |
| 3996862 | Waste disposal system An on-site waste disposal system utilizes controlled incineration of solid wastes and economic heat recovery from flue gases to dispose of solid wastes from a high population dwelling area, such as an apartment building, to decrease substantially the volu... | 12/14/1976 |
| 3985086 | Freezer, vacuum, oven sewage treatment system Raw sewage, garbage, waste, and the like, is ground and supplied to a freezer and vacuum chamber where it is frozen. The water is drawn off by vacuum and waste matter is supplied to an electronic oven where it is reduced to ash. Compressed air and accumul... | 10/12/1976 |
| 3975228 | Drying method and plant which utilize flame jet A drying plant utilizing a flame jet comprises a jet burner supporting device which is provided over a treatment tank, and a sound arresting device which is formed at a burner inserting port in the upper surface of the treatment tank. A jet burner drawn o... | 08/17/1976 |
| 3961587 | Combustion equipment in which humid combustible excreta and disposed materials such as livestock excreta, paper sludge can be burnt spontaneously A furnace for the combustion of moist waste materials having an axial combustion chamber surrounded in part by two communicating air jackets between which air jackets the waste combustible material is disposed, air being forced through the air jackets int... | 06/08/1976 |
| 3939781 | Incinerator, incineration system and method Comminuted waste material is inserted into an upper section of a vertically directed incinerator. The incinerator includes a plurality of vertically contiguous zones. A blower is connected to an outlet port of the incinerator to adjust the flow rate of co... | 02/24/1976 |
| 3938449 | Waste disposal facility and process therefor Solid wastes are dumped into a receiving pit and a conveyor transfers them to a separate station where salvage operations are performed. Adjacent the salvage station a saw cuts waste wood to manageable lengths, which is conveyed with the other wastes to a... | 02/17/1976 |