Abstract: A method and apparatus for cleaning a paper making felt continuously during the paper making process, and wherein the moving felt is passed through a cleaning bath, and ultrasonic vibrations are applied substantially uniformly across the entire width of the felt while the felt is immersed in the bath, to thereby achieve uniform cleaning of the felt and thus uniformity in the paper produced on the machine. A circulation system for the bath is provided for continuously separating the dislodged fibrous residue therefrom, while retaining the chemicals and heat, and the apparatus includes provision for readily replacing the felt.

Abstract: A paper-manufacturing machine and method include the feature of detaching a web from a forming wire by utilizing a stationary transfer suction box past which a felt travels while contacting the web so that the latter becomes detached from the forming wire and adheres to the felt while travelling with the latter beyond the forming wire. The felt and web are lapped through a substantial angle around a roll having a recessed surface whiletravelling toward the first press nip of a press section, and at this roll around which the felt and web are lapped a means is provided for directing steam toward the web and through the latter and the felt inwardly toward the recessed surface of the guide roll so that the flowing steam will on the one hand heat water carried by the web to enhance dewatering of the web at the first press nip while on the other hand the steam will serve to maintain the web reliably in engagement with the felt as the latter travels toward the first press nip.

Abstract: Continuously running web material is transferred from a dryer, or the like, to a proximate calender, or the like, along flutter suppressing foils. The web may be calendered in a nip between a rotary calender roll and a reel drum with which a reel core is in nip relation for winding the web on the core. The calender may comprise a single roll or a plurality of rolls. A split torque arrangement is provided for the reel drum and the reel core. Especially useful for handling creped tissue paper web.

Abstract: A method for the separation of the paper web from the forming fabric in a paper-making machine comprising dividing the web into lengthwise strips to lessen the web adherence to the wire by utilization of a spray means incorporating a plurality of nozzles and then effecting web knock-down and separation from the wire by use of a slotted spray through which pressurized air jets are directed.Through this method very low pressures are required to achieve web separation and the risks of re-contact between web and wire are positively prevented.

Abstract: An improvement in the method and apparatus for fabricating asbestos-cement boards, wherein a felt band coated with fiber fleece is fed to a pair of press rollers in nip relationship and wherein the coating of the felt band with fiber fleece is effected by wet deposition on the felt band and by suction from the side opposite same.The fiber fleece obtained by wet deposition on the felt band following the deposition is condensed and dehydrated by a system consisting of a sieve cylinder and of an associated suction roller operating in nip relationship.

Abstract: 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 wire being supported on rotatable rolls fixedly carried on a frame with the frame supported for pivotal shifting movement about an axis at right angles to the plane of the fourdrinier wire so that the entire carrying unit for the mating wire is shifted to cause it to track properly.

Abstract: The use of a pressure roll in a water control system for suction rolls generally and couch rolls particularly for a papermaking process of the type wherein water is removed from the wet paper web that has been run around the roll and wherein a surface tension covering is provided around the periphery of the couch roll on at least a portion of the couch roll and a water control zone is provided within the couch roll to control the water removed from the paper to the surface tension member with variations of the pressure within the water control zone to directionally control the discharge of water off the couch roll in a predetermined pattern for deposit in the water collecting pan provided in proximity to the couch roll.The pressure roll, having a new soft rubber covering, is mounted in face-to-face pressure engagement against the couch roll, with the pressure nip therebetween located in the water collecting zone preferably within one to one-and-a-half inches of the beginning of the water collecting zone.

Abstract: A felt conditioning system is disclosed for use in connection with paper-making apparatus wherein an endless belt of absorbent felt is pressed at a station along the path of belt motion, into contact with a paper sheet in order to de-water the latter. In accordance with the invention, the felt is purged of water and other foeign matter transferred thereto from the paper, by passing the belt around a hollow, foraminous conditioning roll at high speed. Air pressure controlled within selected limits is applied to a portion of the inside surface of the belt in contact with the roll. The combined action of centrifugal force, air pressure and gravity expels the water and foreign matter carried by the belt.

Abstract: A method and a system for preventing the accumulation of polarized foreign particles on a support surface of support elements positioned in contact with a moving fabric in a paper making machine. An electrically conductive fabric support surface of a support element is charged with an electrical charge of like polarity to the polarized foreign particles whereby the polarized foreign particles will be repelled from the support surface.

Abstract: Galvanic electrodeposition of copper onto a cast iron vacuum box from a rubber covered brass couch shell carrying a non-conductive papermakers forming wire may be prevented by electrically connecting the brass couch shell with a sacrificial anode of more noble metal than brass by means of a conductive metal shoe pivotally secured to but electrically insulated from said vacuum box so as to run in conductive contact with the inside surface of said shell.

Abstract: A pulp slurry including pulp made from recycled waste paper is formed into tissue paper in a paper-making machine having an improved calender stack preceded by a conventional drying and creping section. Drying may be completed on a Yankee dryer or the drying may be partial on the Yankee and completed on so-called afterdryers. One or more rolls in the calender stack are cooled to about 90.degree. F by passing liquid coolant therethrough to keep the paper at a temperature below the melting temperature of thermoplastic contaminants in the recycled waste paper so that the contaminants pass through the calender roll in a hardened, nonsticky or less sticky condition. The cooled calender roll is kept dry by an air shower. A continuous doctor on the cooled roll removes any contaminants that adhere to the roll.

Abstract: Lubrication of a compacting resilient belt used in a web compacting system is facilitated by maintaining a constant depth pool of lubricating liquid between a fluid compactor bar and the inside surface of the belt on the belt approach side of the compactor bar. The compactor bar includes a liquid dam sidewall portion that is provided with liquid overflow weir openings so that the level of the surface of the pool can be automatically maintained at a predetermined height. The belt is used in conjunction with a drum to form a nip space between the outside surface of the belt and a peripheral sector of the drum, the nip space receiving the web to be compacted in the web running direction in a conventional manner, the outside surface of the belt being compressed against the drum by the compactor bar, which bears against the inside surface of the belt while the belt is driven through the nip space.

Abstract: A twin-wire paper machine and method for operating the same. The machine includes an endless carrier wire and an endless pressure wire respectively extending along closed separate loops and having common run portions between which a web is compressed while travelling from an inlet end to an outlet end of the common run portions. A pair of guide rolls are respectively situated in the loops and engage the wires in advance of the inlet end of the common run portions to direct the wires respectively along converging paths toward the inlet end of the common run portions, these converging wire paths forming an entrance region where a headbox is located for directing a stock jet through a slice defined by a pair of lips of the headbox. A forming board engages one of the wires between the inlet end of the common run portions and the guide roll which engages this one wire, and the stock jet is directed toward this one wire and the forming board engaging the same.

Abstract: A web-forming method and apparatus to be used in the manufacture of paper. A web is formed at one side of a travelling wire while at the opposite side thereof, from a location in close proximity thereto, jets of steam are directed toward the wire to produce an implosion at the opposite side of the wire, as well as directly in the wire and in the web. The jets of steam issue from openings in the wall of an enclosure which is situated in close proximity to the said opposite side of the wire, this enclosure having in its interior steam which issues through the openings to form the jets. A plurality of these enclosures may form part of a forming board, and also one or more of the enclosures may be situated along the wire at a part thereof which has travelled beyond the forming board.

Abstract: This invention relates to a method and apparatus for guiding endless woven fabric belts such as are used on paper making machines. Specifically, the instant application teaches the use of a guide shower, which is disposed across the width of the endless belt, to provide the guiding action. The shower comprises a series of nozzles which are adapted to be directed at one edge or the other of the endless belt. Three separate embodiments are disclosed. In one of the embodiments, the shower pipe connecting the nozzles is divided into a left side and a right side. The nozzles on the left side are all directed at the left edge of the endless belt whereas the nozzles on the right side are directed at the right edge of the endless belt. In a second embodiment, two parallel shower pipes are disclosed, the nozzles of one of the shower pipes all being directed at the left edge of the endless belt, the nozzles of the other pipe all being directed at the right edge of the endless belt.