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| Number | Title | Issue Date |
| 4227658 | Paper winder assembly including pressure modulating valve A paper winder assembly of the type in which a rider roll is positioned to bear against a roll on which the traveling paper web is being wound. The rider roll position is controlled by hydraulically actuated lifting means which vary the pressure at which ... | 10/14/1980 |
| 4222817 | Method and apparatus for pulping and grading waste material Method and apparatus for pulping and grading waste paper in which stock is introduced through a central inlet in one end wall of a cylindrical chamber and accepts are discharged through a perforate screen in the opposite end wall. An impeller in the chamb... | 09/16/1980 |
| 4220501 | Papermaking machine with means facilitating stringing, and method Beam means are provided for facilitating stringing of a forming belt into position with respect to the machine frame. The beam means are supported to be moved transversely from an inactive position generally rearwardly relative to the frame into a positio... | 09/02/1980 |
| 4213823 | Paper making machine screen with staggered foils The stock slurry pulsing rotary foils in a cylindrical paper making machine screen comprise sets which are shorter than the screen and respectively extend from opposite ends of the screen and have their inner end portions alternating in circumferentially ... | 07/22/1980 |
| 4201624 | Extended nip press A press mechanism and method for removing liquid from a traveling fibrous web such as in a paper making machine including first and second elongate extended press nips including an endless looped traveling belt passing over spaced guide rolls with first a... | 05/06/1980 |
| 4197158 | Paper making machine press section A press section for a paper making machine including rolls arranged to form five sequential press nips for pressing a multi-ply web with each of the nips being a double felted press, and the first nip formed between first and second rolls with the first r... | 04/08/1980 |
| 4196045 | Method and apparatus for texturizing and softening non-woven webs A method and apparatus for texturing, softening and building bulk into a non-woven fabric web, such as tissue or toweling paper, wherein the paper is passed through a plurality of nipped rolls while interposed between a pair of screens. In the preferred e... | 04/01/1980 |
| 4195417 | Dryer drum with magnetic spoiler bars A steam heated dryer drum having one or more spoiler bars secured against its inner shell wall to extend longitudinally and substantially parallel with the axis of rotation. The spoiler bars generate turbulence in the condensate to lower the resistance to... | 04/01/1980 |
| 4192712 | Combined breaker size press coater A paper web processing mechanism for applying a combined breaker press and size press coating operation including a first breaker nip formed between a first hard surfaced chilled iron roll and a second coating roll with the first roll being loaded to cont... | 03/11/1980 |
| 4189344 | Method of texturing untextured dry sanitary tissue web Softness and bulk are imparted to untextured dry sanitary tissue sheet web by advancing it under ordinary support point tension through the nip of spaced grooved rotary texturing rolls having complementary partially interdigitated texturing ribs acting on... | 02/19/1980 |
| 4184204 | Programmable refiner controller A micro-processor is useable which can be programmed so as to provide a controller for a refiner, for example, for a paper stock refiner in which flow and consistency transducers are utilized to measure these parameters of the paper stock and these signal... | 01/15/1980 |
| 4183149 | Web drying roll A method and apparatus for drying a traveling fibrous web such as paper including a hollow cylindrical dryer drum with means for directing a flow of steam into the drum and for removing condensate from the inside of the drum and positioning an axially elo... | 01/15/1980 |
| 4181378 | Doctor bearing integral pressure lubrication A doctor assembly for a paper making machine including a force fed lubricated bearing structure therefor with a doctor shaft having a journal axially oscillatable in an annular bearing housing with a bearing sleeve insert between the journal and the housi... | 01/01/1980 |
| 4180216 | Winder with horizontal rider roll adjustment A method and mechanism for winding a roll from a continuous traveling web including first and second parallel winder drums supporting the wound roll and one or more rider rolls on top of the roll being wound with the rider roll circumferential location be... | 12/25/1979 |
| 4177304 | Method of coating both sides of a travelling web Both sides of a travelling web are continuously but separately coated with coating material by passing the web through successive roll-formed puddles in a simple three roll arrangement.... | 12/04/1979 |
| 4176775 | Inhibiting noise in sheet spreaders Objectionable noise is inhibited in sheet spreaders of the type wherein strips of a slit traveling web are laterally separated by running the strips over spaced, bowed hollow spreader bars, frictional resistance being alleviated by floating the strips on ... | 12/04/1979 |
| 4175714 | Method and apparatus for reeling a plurality of ribbons This apparatus utilizes a traveling looped conveyor belt upon which a plurality of previously slit web ribbons are received. The conveyor belt is then movably positioned to partially wrap a spool to simultaneously urge each of the ribbons into wrapping en... | 11/27/1979 |
| 4176152 | Heating and stratification method for an injection molding machine An injection molding machine having a barrel and a reciprocating and rotatable screw disposed therein. A combination heat transfer and stratification device is disposed between the screw and the outlet of the barrel. The device includes a generally tubula... | 11/27/1979 |
| 4161205 | Method and apparatus for plybonding control A method and apparatus for forming a multi-ply web of paper wherein a first layer is carried on the underside of a traveling felt to a bonding station located over the top of a forming cylinder on which a second layer is formed with a water bead in the ni... | 07/17/1979 |
| 4158596 | Traveling wire web former An apparatus and method of forming a continuous fibrous paper web by depositing the stock onto a forming run of a fourdrinier wire while dewatering the stock and collecting water beneath the wire and depositing the stock onto the wire from a spray or floo... | 06/19/1979 |
| 4157236 | Electrostatic dry former A method and apparatus for dry forming a paper, or other nonwoven web, from fibers or fiber flocs. The flocs or bundles are exposed to an oscillating electrostatic field, the resultant mechanical agitation shakes individual fibers loose, which then fall t... | 06/05/1979 |
| 4155177 | Condensate control for dryer drum A hollow cylindrical dryer drum having an outer surface with a working face for heat drying a traveling paper web with a plurality of axially extending bars on the inner surface of the drum and an annular ring dam positioned against the ends of the bars a... | 05/22/1979 |
| 4154536 | High efficiency injection molding screw A screw for use in the bore of an extruder barrel of a molding machine thermo-plastics material feeder has an intermediate section of circumferentially interrupted helical flights or screw threads with inclined ramps on the leading ends of the interrupted... | 05/15/1979 |
| 4153504 | Twin-wire fibrous web former and method A fibrous web is continuously formed between inner and outer endless foraminous forming belts between which stock slurry is fed from a headbox, the belts being held in tension as they wrap a first convexly curved forming run surface from which the outer b... | 05/08/1979 |
| 4146424 | Twin wire former with wire orientation control An apparatus and method for making a paper web with a traveling fourdrinier wire and a looped mating wire pressed into the fourdrinier wire along a forming run and a headbox with a slice for delivering stock at the head end of the forming run, the mating ... | 03/27/1979 |
| 4141788 | Method of and means for forming multi-ply paper webs from a single headbox Multi-ply web forming stock jets directed through a slice from a single headbox into a forming zone between converging forming surfaces in a papermaking machine are maintained separated for a sufficient interval after leaving the slice opening to permit d... | 02/27/1979 |
| 4141789 | Headbox having pivoted bridging cover A headbox for a paper making machine having a slice chamber with a vertical tube bank supplying the slice chamber and a distributor chamber behind the tube chamber tapering from a larger size to one side of the machine to a smaller size at the other side ... | 02/27/1979 |
| 4140574 | Web spreader and guide A web spreading and guiding device to maintain a running paper sheet making foraminous web comprising a wire or pick-up felt transversely taut and straight running in a papermaking machine, has a pair of free running pneumatic tires having their treads in... | 02/20/1979 |
| 4140481 | Oven with improved parison rotating means A tubular parison heating oven having a conveyor passing therethrough with parison holders rotatably mounted thereon for supporting the parisons in a vertical position. A toothed wheel is fixed to each parison holder for rotation therewith and a multiplic... | 02/20/1979 |
| 4136018 | Vortex separator with coaxial inlet and lightweight reject pipelines Method and apparatus for pulping and grading waste material in which the waste material is introduced into a cylindrical chamber having two end walls with a perforate screen in one of the end walls. An impeller in the chamber adjacent the perforate screen... | 01/23/1979 |
| 4133715 | Headbox and holders for floating slice chamber dividers Holders for floating slice chamber dividers are provided with flexible bodies whereby the dividers are relieved from bending strains in their upstream attached end portions. Advantageously these holder facilitate orientation of the slice chambers of headb... | 01/09/1979 |
| 4128455 | Headbox trailing element mounting and method Thin plastic flexible trailing element sheets which divide the slice chamber of a papermaking machine headbox into substantially uniform turbulence channels between the slice opening and the flow divider plate between the slice chamber and the preslice ch... | 12/05/1978 |
| 4126513 | Air dome attenuator A method and mechanism including a housing having a screening chamber therein with a cylindrical screen and foils rotating past the surface of the screen with the housing having circumferentially spaced outlets which are at nonuniform circumferential loca... | 11/21/1978 |
| 4125429 | Headbox turbulence generator and damping sheet Turbulence is generated within a headbox nozzle passage in such close adjacency to the slice opening as to assure thorough and substantially uniform dispersion of the fibers in a jet stream delivered to the forming area on a travelling paper web forming s... | 11/14/1978 |
| 4124308 | Sequential co-injection unit adapted for structural foam molding A single screw injection device or extruder sequentially injects skin and foamed plastics melts into a mold to produce structural skin covered foam molded parts free from swirl marks. A single extrusion screw or plasticator selectively feeds, compresses a... | 11/07/1978 |
| 4120349 | Heat transfer roll A rotary hollow shell cylindrical heat transfer roll for either chilling or heating a web has a device therein for controlling a heat transfer liquid to flow as a uniform thin layer stream in heat transfer relation to the inner cylindrical surface of the ... | 10/17/1978 |
| 4117955 | Multi-port valved nozzle for co-injection molding A valve controlled multiple port nozzle device is provided for co-injection molding to sequentially and simultaneously feed a plurality of plastics material melts into a mold. The nozzle device is especially adapted for initially feeding a skin melt follo... | 10/03/1978 |
| 4112549 | Apparatus for deflocculating fibrous wad and uniformly distributing the disintegrated fibrous material on a dry fiber layer forming surface A method and apparatus for deflocculating a dry suspension of fibers wherein the fibers are introduced into a housing in suspension in air, and are allowed to commence settling by free fall through the housing. An impeller is positioned below the inlet an... | 09/12/1978 |
| 4111799 | Stock screen foil A mechanism for screening a stock slurry for a paper making machine including a cylindrically shaped tubular screen with a stock supply at one end and a discharge at the opposite end for rejected stock and an annular receiving chamber outwardly of the scr... | 09/05/1978 |
| 4108110 | Apparatus for coating both sides of a travelling web Both sides of a travelling web are adapted to be continuously but separately coated with coating material by passing the web through successive roll-formed puddles in a simple three roll arrangement. Means are provided for preventing coating migration fro... | 08/22/1978 |
