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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 |
| 7172982 | Dryer and/or industrial fabric with silicone-coated surface An industrial fabric having improved sheet restraint and wear resistance along with acceptable permeability. The improvement is effected by coating only the high spots of the fabric with silicone material. The coating methods used in this invention may include kiss ... | 02/06/2007 |
| 7070693 | Process for treating septage A process and apparatus for the treatment of septage, particularly grease trap waste, is disclosed. The inventive process will convert the septage into Biosolids (sludge) and water dischargeable to the environment. The treated septage achieves pathogen reduction, an... | 07/04/2006 |
| 6910282 | Method and apparatus in the drying section of a paper machine or the like A web (16) running from an opening nip (K1) between a cylinder (10) and a supporting fabric (18) toward a roll (14), is supported by a negative pressure created by a blow box (30). In an intensified negative pressure region ... | 06/28/2005 |
| 6790315 | Drying section and method for drying a paper web A drying section for drying a web in a papermaking machine has a pre-drying section and a final drying section, wherein the pre-drying section includes a hot press formed by a first press member and a rotatable counter roll in engagement with each other so as to for... | 09/14/2004 |
| 6773786 | Paper machine cover In order to prevent the formation and subsequent breaking off of large agglomerations of dirt particles on the cover of a paper machine, at least one surface located opposite of the paper web and pertaining to at least one part of the elements forming a contact surf... | 08/10/2004 |
| 6701637 | Systems for tissue dried with metal bands A web treatment device is disclosed capable of heating and creping a fibrous web with control systems for uniform operation. The web is pressed between two belts in a compression zone, where is it also subject to a temperature gradient that can assist in ... | 03/09/2004 |
| 6634115 | Conditioning device to change the moisture content of printing stock A conditioning device to change the moisture content of printing stock, in which the stock is brought into contact with at least one endless cloth that absorbs moisture. The endless cloth is heated by heated transport rolls. A reduction of the moisture co... | 10/21/2003 |
| 6488816 | Drying section for drying a paper web in a papermaking machine A drying section for drying a web in a papermaking machine has a pre-drying section and a final drying section, wherein the pre-drying section includes a hot press formed by a first press member and a rotatable counter roll in engagement with each other s... | 12/03/2002 |
| 6442868 | Heated drying cylinder A drying cylinder for drying a fibrous web, the cylinder having an inner chamber connected to a pressurized air source; and an outer cylinder jacket having an air-permeable region which is adapted to contact the fibrous material web. Also a drying section... | 09/03/2002 |
| 6425981 | Apparatus and associated method for drying a wet web of paper An apparatus and associated method for drying a wet web of paper comprising a drying section for increasing the dry solids content of a wet web of paper, a cleaning section disposed at least not above the drying section, and a continuous drying fabric for... | 07/30/2002 |
| 6240654 | Process for capillary dewatering of foam materials and foam materials produced thereby A method and several exemplary apparatus for capillary dewatering of foam materials. The apparatus may include felt which is applied to an exposed face of the foam material, or a double felt arrangement applied to two opposed surfaces of the foam material... | 06/05/2001 |
| 6161301 | Continuous drying apparatus for porous web A continuous drying apparatus for a porous web including a porous web for traveling on a drying line, a heating cylinder for contacting the porous web at its circumferential surface and rotating in synchronization with the travel of the porous web to heat... | 12/19/2000 |
| 6158144 | Process for capillary dewatering of foam materials and foam materials produced thereby This invention relates to a method and several exemplary apparatus for capillary dewatering of foam materials. The apparatus may include felt which is applied to an exposed face of the foam material, or a double felt arrangement applied to two opposed sur... | 12/12/2000 |
| 6138380 | Method and apparatus for controlling the temperature in a paper machine A method and device effect controlled uniform temperature drying of a wet web, such as a paper web substantially immediately after formation in a paper machine, without damaging the supporting fabric carrying the web. The web has a central region and firs... | 10/31/2000 |
| 5983522 | Drying and pressing machine with a flow spun pressing cylinder In a drying and pressing machine that includes a pressing cylinder, a flow spun stainless steel pressing cylinder is used, produced in one piece and without welding. This cylinder (10) has a reduced thickness. It rests on rollers (10) that comprise glass ... | 11/16/1999 |
| 5649371 | Dry unit of a dry end of a machine for producing material webs A dry unit of a dry end of a machine for producing a material web and including at least one drying cylinder and a plurality of dry felts parsing around the dry cylinder one above another, with at least two of the dry felts being lifted off the dry cylind... | 07/22/1997 |
| 5636450 | Contact-free diverting device for sheet material A device for diverting sheet, web or mat material treated continuously uses an air cushion (6) formed about a cylindrical surface (4). Infrared transmitters (7), whose radiation is directed to a portion of the material (1) being diverted, are provided in ... | 06/10/1997 |
| 5594998 | Heatable shield for heat treatment of paper-making machine textiles A heat shield which is attached to a heatable roller in a stretching machine for the treatment of felt and wire cloths is designed to have channels for the heating medium extending in the machine direction. The ducts may be grouped in sections having a co... | 01/21/1997 |
| 5588223 | Restrained paper dryer Methods and apparatus are disclosed for restrained paper drying in order to produce high performance paper with enhanced stiffness and, in the process, substantially improve paper properties and reduce fiber usage. The paper web is held in a restrained po... | 12/31/1996 |
| 5571223 | Roller apparatus A roller apparatus (23) for use in the drying section of an apparatus for producing corrugated board comprises a tubular body operative to be received over a metal roller. The wall of the tubular body comprises an inner layer (24) of relatively hard polyu... | 11/05/1996 |
| 5553393 | Dryer section of a paper machine including cylinder groups with single-wire draw A dryer section of a paper machine including cylinder groups provided with single-wire draw having smooth-faced heated drying cylinders against which a web to be dried enters into direct contact, and reversing rolls. The groups with single-wire draw have ... | 09/10/1996 |
| 5465504 | System for modifying the moisture profile of a paper web A paper web in a paper machine including a yankee dryer is dried and the moisture profile thereof controlled by arraying a plurality of gas burners in a cross-machine direction within the hood of the yankee dryer to direct heat toward different incrementa... | 11/14/1995 |
| 5410819 | Mounting system for paper dryer nozzle box One or more nozzle boxes are supported by support walls of a yankee dryer hood. The mounting arrangement serves to maintain the nozzle boxes concentric to the yankee, reduce thermal stresses, and alleviate edge misalignment problems between the nozzle box... | 05/02/1995 |
| 5312523 | Assembly for heat treating of an endless wire or felt In an assembly for heat treatment of an endless web, comprising two rotatable rollers of which at least one roller is heatable, there is provided between the two rotatable rollers a heatable glide surface, stationary relative to the direction of movement ... | 05/17/1994 |
| 5074278 | Pocket ventilator A pocket ventilation system for the dryer section of a paper machine. The ventilation system comprises a plenum with a plurality of orifices producing medium velocity air jets injecting air in the pocket through the dryer fabric, and an orifice producing ... | 12/24/1991 |
| 5071513 | Method for the mechanical-thermal dewatering of a fiber stock web At least two substantially parallel rows of adjustable pressure elements cooperate with a heatable counter element like a counter roll and are arranged immediately consecutive but separate from each other to define at least two pressing sections of an ext... | 12/10/1991 |
| 4982513 | Process and dryer section for drying a running web in a paper or board making machine A dryer section of a paper or board making machine has a plurality of dryers. In a first group of dryers, each dryer heats the web somewhat more, but not to the level of the maximum evaporation rate of the moisture contained in the web. As the web is pass... | 01/08/1991 |
| 4949471 | Mechanical drying process applicable to papermaking The present invention is to be used in drying installations. The invention consists of combining the heat of the copper cylinders on which the paper slides with pressing rollers with a diameter larger than the conventional rollers used to transport the be... | 08/21/1990 |
| 4882855 | Dryer section for drying a running web in a paper or board making machine An apparatus in the dryer section of a paper or board making machine, wherein the section has a plurality of dryers. There is an initial region of dryers, each of which heats the web somewhat more, but not to the level of the maximum evaporation rate of t... | 11/28/1989 |
| 4880502 | Press drying apparatus with deflection control and blow box cooling A press drying apparatus is disclosed for removing excess water from a formed web by the simultaneous application to the web of elevated temperature and pressure for a prolonged period of time. The apparatus includes a frame and a heated roll rotatably su... | 11/14/1989 |
| 4874469 | Heated extended nip press with porous roll layers An apparatus and method is disclosed for removing fluid from a fibrous web. The apparatus includes a press member and a blanket which cooperates with the press member for defining therebetween an elongate pressing section such that the web is pressed betw... | 10/17/1989 |
| 4831746 | Method and apparatus for heating mineral fibers A method and apparatus for heating fibrous mineral insulation material comprises an oven divided into zones, a conveyor for carrying the insulation material through the oven, means for directing hot gases into contact with the insulation material in the f... | 05/23/1989 |
| 4738752 | Heated extended nip press apparatus A press apparatus is disclosed for removing fluid from a fibrous web. The apparatus includes a press member and a blanket cooperating with the press member for defining therebetween an elongate pressing section such that the web is pressed between the pre... | 04/19/1988 |
| 4734996 | Method and apparatus for heating mineral fibers A method and apparatus for heating fibrous mineral insulation material comprises an oven divided into zones, a conveyor for carrying the insulation material through the oven, means for directing hot gases into contact with the insulation material in the f... | 04/05/1988 |
| 4691449 | Method and apparatus for drying a moist fibre web A method for drying a moist fibre web (6), particularly a paper web, in which the moist fibre web, subsequent to having passed a wire (9), a couch roll (10), a pick-up felt (11) and a suction press roll (8), is advanced to a press nip (13) where the fibre... | 09/08/1987 |
| 4505052 | Air blast apparatus for the dryer section of a paper making machine In the dryer section of a paper making machine, the paper web is pressed against the drying cylinders by means of an air-permeable endless support band. An air blast apparatus extends transversely of the paper making machine and creates an air flow which ... | 03/19/1985 |
| 4495714 | Assembly for heat treatment of a papermaking wire or felt An assembly for heat treatment of a papermaking wire or felt comprises mutually opposing heating surfaces that are alternately offset in the direction of web travel and can be moved toward the felt/wire, thereby enabling one to obtain an ironing effect on... | 01/29/1985 |
| 4474643 | Method for controlling the moisture content of a fiber web and apparatus for accomplishing the method and a paper making machine for accomplishing the method and a paper making machine with an apparatus for accomplishing the method A method is provided for controlling the moisture content of a paper web during its movement through the drying section of a paper making machine. According to the present invention it is possible to control or equalize the moisture profile of a fiber web, e.g... | 10/02/1984 |
| 4378639 | Method and apparatus for uniformly drying a continuous web of cellulosic fibers A method and apparatus used in the uniform drying of a continuous web, such as a sheet of paper or paperboard. A newly formed web of paper of wet cellulosic fibers and the necessary additives is initially directed through a press section where excessive w... | 04/05/1983 |
