Abstract: A fourdrinier table assembly of a length to underlie a substantial portion of the forming length of a traveling fourdrinier wire in a paper making machine, and having a plurality of supporting rails carried by supporting structure in side-to-side spaced relation to one another and arranged to span the forming length portion in the machine direction below the fourdrinier wire, a series of elongate dewatering foils being carried by and extending in cross machine direction across the supporting rails in spaced relation to one another along the length of the rails and adapted to act in dewatering relation with respect to the underside of the traveling fourdrinier wire. The foils are retained adjustably and replaceably on the rails. The supporting structure for the rails comprises beams extending in cross machine direction and spaced from one another in the machine direction.

Abstract: An extended press nip for a paper making machine including a large main roll with end bearings, a pressure shoe having a concave face defining an extending press nip with the roll, an overhead looped felt passing through the nip, a lower looped belt passing through the nip, means lubricating the belt surface facing the shoe, and pivotal supports for the end bearings for the roll with one support being a single pivot and the other support being a double pivoted link and the bearings additionally supported on dowels which accommodate alignment of the bearings.

Abstract: In a paper making machine, apparatus for cleaning a doctor blade which extends across a roll of the paper making machine in the cross-machine direction includes a frame mounted for oscillating movement over the length of the doctor blade, which frame is driven by drive apparatus preferably in the form of an air cylinder whose piston is coupled to the frame to oscillate the same and a blade cleaning brush carried by the frame in a manner such that the brush engages the doctor blade to clean the same as the frame is oscillated by the drive apparatus. The brush preferably comprises a rotatable, disc-shaped brush equipped with an air motor for rotating the same. The present invention provides the capability of cleaning the doctor blades of paper machines without necessitating interruption of the machine operation.

Abstract: Apparatus for the compressive handling of a strip of material, especially for handling paper strip in a paper machine, includes a plurality of cooperating horizontal and vertical roller pairs arranged in ascending and/or descending step-like succession and forming compressive zones through which the strip of material passes. Certain rollers are movably mounted so that they may be pivoted away from the compressive zone for replacement during operation of the paper machine. Cable guides are provided for leading the strip through the compressive zones and, owing to the movable mounting arrangement of the rollers, the course of the cable guides through the compressive zones need not be altered when a roller is exchanged.

Abstract: Paper trim, removed from a freshly made paper web by a slitter, is drawn by a subatmospheric pressure through a duct into a separating tank in which a suction is induced by a fan, the movement of the paper trim being killed by the circulation of pulp into this vessel from a mixing tank to which the slurry is delivered by a pipe from the bottom of the vessel. The pipe terminates in means forming a liquid seal and the solvent for the slurry is sprayed into the vessel to scrub the gas before it reaches the fan.

Abstract: Quick connect apparatus for headbox components in a paper making machine, e.g., apparatus to quickly connect and disconnect the equalizing chamber portion of the air cushion damper from associated distribution header and turbulence sections of the machine, include an elongate locking rod extending over a substantial portion of the end region of the components to be attached, the locking rod being mounted for longitudinal movement. The locking rod is provided with spaced locking portions adapted to lockingly engage correspondingly spaced portions of adjacent components to which said component is to be attached. The components are quickly connected in one embodiment by the longitudinal movement of the elongate locking rod or, in another embodiment, by the rotational movement thereof, whereby the locking portions on the rod are moved into and out of locking engagement with the corresponding spaced locking portions of the other component.

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: The described apparatus has utility as a doctor on a paper machine, as a drying element in an aircap dryer and as a sealing element in such a dryer. It involves a foot portion having an outer surface generally conforming to the curvature of the cylinder surface on which it is used. It is resiliently supported in close juxtaposition to the cylinder surface so that a gap diminishing in thickness towards one longitudinal edge of the foot portion is provided. At least two rows of nozzles communicate through the foot portion in order to project pressurized air into the gap. Each nozzle is angled relative to three orthogonal planes, one of which is tangent to the cylinder surface at the point where the nozzle axis meets the surface, another of which is parallel to the longitudinal edge of the foot portion. The flow from the nozzles is such as to support the foot portion and to seal the support flow from any disorganized flows.

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 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 of the machine with the lower floor of the header chamber sloping upwardly and a pivotal cover extending over the tube bank and header chamber openable for access to the tube bank and header chamber.

Abstract: In an apparatus for forming a non-woven, fibrous web, a device for making a uniform density dispersion of the fibers in an aqueous fiber slurry and depositing the dispersion onto a web former, while maintaining its integrity. The device includes a generally laterally divergent channel, in which the greatest depth of the flowing stream of fiber slurry is at its fiber slurry entry end, having rolls for uniformly dispersing the fibers, rolls for uniformly spreading the dispersion laterally throughout the channel, and means in cooperation with the rolls for moving the dispersion to an exit end of the channel adjacent the web former. Preferably, the device is equipped with air doctors directed at the rolls for insuring the separation of the dispersion from each roll as it is moved to another roll.

Abstract: The distribution pipe and pulp guide of the head box are mounted in a box-shaped support which is rotatable within two annular bearings. The support may be rotated so as to move the pulp guide from a horizontal plane into a vertical plane, for example for cleaning purposes. In addition, the distribution pipe is removably secured to the frame so as to be moved out of the support for cleaning purposes.

Abstract: A paper machine has a pair of endless wire loops respectively having elongated portions which travel together upwardly along a common path where the wire loops form a twin-wire former. This common path has a lower receiving end for receiving pulp stock from which a web is to be formed and an upper discharge end from which a web issues from the twin-wire former while being transported by one of the endless wire loops beyond the discharging end of the common path. A lower forming roll around which the endless wire loops are lapped determines the lower receiving end of the common path as well as an initial portion of the common path along which the wire loops travel together. An upper forming roll is also lapped by the endless wire loop and determines the discharge end of the common path as well as a final portion thereof.

Abstract: A rolling device or roller mill having a controlled-deflection roll possessing a stationary roll support or carrier mounted in a frame of the rolling mill. A tubular roll shell is rotatable about the roll support and bears thereon by means of at least one bearing or support element. The roll shell is provided at its ends with guide members which are rotatably mounted in the roll shell and which are guided on the roll support in the direction of the pressing or disengaging movement of the roll shell. The controlled-deflection roll is equipped with a scraper device having a scraper blade which, during operation, is in contact with the outer surface of the roll shell, the scraper device being rotatably mounted on the frame. At least one of the guide members has a disengaging or lift-off element which, when the roll shell performs a disengaging or lift-off movement from the operative position, abuts a part of the blade support or carrier and raises the blade off the surface of the roll shell.

Abstract: A self-cleaning suction roll assembly of the type comprising a generally cylindrical shell having an outer radial surface, an inner radial surface and perforations formed in the shell extending from the outer radial surface to the inner radial surface. The assembly includes a plurality of sealing elements for forming a pressure chamber or compartment with the inner surface of the shell, against which such sealing elements are in engagement in the operation of the assembly. The cylindrical shell is provided with recess or recesses formed on the inner surface across the length thereof whereby fibers and other deleterious material which manage to pass through the perforations may be continuously swept into such recess or recesses and carried out of the pressure chamber or compartment and washed out in normal operation of the assembly so that such fibers and other material will not accumulate against the sealing elements inside the pressure chamber or compartment.

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: A bin-like arrangement with a mesh near its bottom collects dust from near the doctor blade of a Yankee cylinder in a paper making machine; a trough-like arrangement having a sloping bottom at the lower end of the bin receives the dust, and a plurality of horizontal air jets are provided at different heights at different points along the trough to entrain and remove the accumulated dust, preferably through a suction outlet. The system greatly reduces the dust released to the adjacent environment, without interfering with normal doctor blade operation, and without interfering with normal handling of the separated paper.

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 structure for keeping clean the interior of the headbox of a paper machine as well as contributing to the homogeneity of the stock flowing through the headbox. At a location in the headbox where there is a tendency for accumulation or build-up of matter such as fibers, fillers, slime, or the like, steam is introduced such as by supplying steam to the interior of a hollow body having a wall provided with passages through which the steam can escape to the exterior of the hollow body into the stock in the headbox.

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: The lip at the outlet of the nozzle duct is mounted along with the adjusting mechanism in a structural unit which is pivotally mounted on the casing. This allows the lip to be moved away from the permeable element to expose the nozzle duct and guide device for cleaning.