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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 4293632 | Attrition process for alteration of toner particles containing conductive materials Described is a process for the treatment of certain toner materials, useful in electrophotographic development, which process in one embodiment involves subjecting an electrically conductive toner material to an attrition process, thus causing the removal... | 10/06/1981 |
| 4283252 | Method and apparatus for producing fiber pulp from fibrous lignocellulose containing material Method and apparatus for producing thermo-mechanical pulp from wood chips and the like in which the chips are first heated in a steaming chamber or preheater to a fiber temperature below the softening point of the lignin of middle lamella section of the w... | 08/11/1981 |
| 4276154 | Process for the electrostatic separation of crude potash salts Crude potash salt is conditioned for separation into its components by means of an electrostatic field by grinding the salt to disintegration and contacting the ground salt with a conditioning agent, such as salicylic acid, which has been converted to the... | 06/30/1981 |
| 4274600 | Method of and a grinder for grinding wood under pressure A method of grinding wood under pressurized conditions in a grinder according to which wood is fed in batches into a pressurized gas-filled grinding chamber provided with a rotary grinding means. The wood batches are fed through a feeding chamber provided... | 06/23/1981 |
| 4273294 | Method and apparatus for cryogenic grinding The production rate of a conventional cryogenic grinding system incorporating an impact mill may be increased by (a) providing means to allow at least 70% of the embrittled material entering the mill to leave the mill before it passes the inlet; and (b) p... | 06/16/1981 |
| 4270703 | Method of and a grinder for discharging groundwood stock when grinding wood under pressure A method of discharging groundwood stock when grinding wood under pressurized conditions in a grinding chamber, according to which the groundwood is suspended into stock and collected in a tank provided with an outflow for groundwood stock to atmospheric ... | 06/02/1981 |
| 4244529 | Inerting of pulverizing mills for combustible materials A method is provided for inhibiting the occurrence of explosions or puffs in a coal pulverizing mill by introducing a sufficient amount of water vapor into the primary air stream of a coal pulverizing system immediately prior to the introduction of coal a... | 01/13/1981 |
| 4239496 | Gas cycle fluid energy process for forming coal-in-oil mixtures Process for forming coal-in-oil fuel mixtures where coal is pulverized in a fluid energy pulverizer by use of a noncombustible carrier gas, with the pulverized coal separated and the spent gas cleaned to remove moisture and residual coal, the cleaned gas ... | 12/16/1980 |
| 4236959 | Method of producing fiber pulp by grinding fibrous material in a steam environment The invention relates to a method in or relating to grinding of vegetable material in a grinding apparatus equipped with discs mounted rotatably relatively one another in a casing, within which a superatmospheric pressure is maintained by steam. This stea... | 12/02/1980 |
| 4191335 | Dry refining process and apparatus A process and apparatus is disclosed for dry refining cellulosic pulp wherein the liberated fibers are structurally deformed and twisted without producing unwanted knots or fiber bundles. For the purposes of the invention, a disk refiner is used which is ... | 03/04/1980 |
| 4187141 | Method of producing bleached mechanical pulp Method of producing mechanical pulp of improved brightness and light-scattering properties in a defibration apparatus in which wood chips are ground between a pair of discs which rotate relative to one another in a pressurized grinding zone. Prior to the ... | 02/05/1980 |
| 4136831 | Method and apparatus for minimizing steam consumption in the production of pulp for fiberboard and the like Method and apparatus for minimizing steam consumption in the production of pulp used for the manufacture of fiberboard and the like, in which chips of cellulosic material are ground in a defibrator or refiner in an environment of saturated steam above 100... | 01/30/1979 |
| 4111371 | Granulation process This invention provides a process for the preparation of dry-medicament granulation. An apparatus for practicing such process comprises an enclosed-circular mixing chamber containing mixing means with a separate air inlet means and air outlet means, both ... | 09/05/1978 |
| 4102503 | Method of and apparatus for the low-temperature milling of materials Low temperature embrittlement of materials which otherwise cannot be readily comminuted is carried out by treating the materials, g.g. scraps of synthetic resin containing components which might otherwise be released into the atmosphere, with a circulated... | 07/25/1978 |
| 4088528 | Method and apparatus for grinding chips into paper pulp In the continuous production of paper pulp from ligno-cellulose raw material, the raw material is subjected to grinding and/or delignification by passing it in the form of small pieces between interpenetrating helicoidal surfaces driven synchronously in r... | 05/09/1978 |
| 4085897 | Crusher-dryer and method of crushing An improved apparatus for the simultaneous crushing and drying of materials, such as coal with high moisture content, which includes a hammermill having parallel top inlets for the material and a rapid flow of hot air. The material drops into the impactor... | 04/25/1978 |
| 4037792 | Continuously refining raw fibrous material to produce mechanical refiner pulp Raw fibrous material is preheated in a preheater in the presence of steam under a pressure greater than atmospheric pressure and then continuously introduced into a disc refiner, without prior defibration, whereby steam is generated in said disc refiner. ... | 07/26/1977 |
| 4030969 | Method of dispersing a bleaching agent into a stream of fibrous cellulosic pulp material in a throttling nozzle A stream of disintegrated fibrous cellulosic pulp material and steam under pressure is subjected to an instantaneous pressure reduction as said stream and steam pass through a throttling nozzle, in a throttling zone, wherein a liquid solution of a bleachi... | 06/21/1977 |
| 4025990 | Process for reclaiming rubber, metal and fabric from whole tires Scrap tires containing magnetic components and non-magnetic rubber and cord components are cooled in a cryogenic freezer to the embrittlement temperature, comminuted in a comminution device and passed through a series of screening and density classificati... | 05/31/1977 |
| 4020992 | Separation of joined plastic and metal components A method and apparatus for separating plastic liners from metal closures is disclosed which includes a liquid nitrogen precooler for chilling closures with liners therein, a hammermill for impacting the chilled closures to liberate the liners from the clo... | 05/03/1977 |
| 4002462 | Ore beneficiation method and apparatus A dry milling process for separating a mineral values bearing component from the sand grains or gangue materials of sedimentary formations. The ores are crushed, ground and screened until the bulk of material is of a size corresponding to or slightly larg... | 01/11/1977 |
| 3992350 | Process of mixing fillers with polytetrafluorethylene and tetrafluorethylene copolymers This invention relates to filled or charged tetrafluorethylene polymers and copolymers useful as molding or extrusion materials and to their use for the production of various products by lubrication extrusion. The filler and polymer or copolymer are mixed... | 11/16/1976 |
| 3966126 | Classifying hammermill system and method of operation An apparatus and method for processing fibrous material into fluff and substantially individual fibers. The apparatus includes a hammermill having an impermeable wall of grid-like configuration against which fibrous material to be fiberized is thrown by i... | 06/29/1976 |
| 3948448 | Method for the fine comminution of solid materials with a rolling mill and comminution device for carrying out the method An improved comminuting rolling mill wherein a solid material such as mineralic loose or bulk materials are introduced into a gap between opposed parallel counter rotating comminuting rollers with the material being supplied by a delivery device above the... | 04/06/1976 |
| 3946950 | Material reducer A material reducer for coal, lignite, ore, stone, rock, oil shale and the like which employs rotary hammers, bars or the like not only to crush the material but also to propel the crushed material upwardly along a confined or partially confined path which... | 03/30/1976 |
| 3934379 | Removal of built up layers of organic coatings A method for removal of layers of organic material built up on a support for articles during surface coating and treating comprising applying a liquefied inert gas to the support and/or preferably to the built up layers of organic material to cause embrit... | 01/27/1976 |
