Abstract: A papermaking felt having interwoven warp and filling yarns on its face side and bulky rib forming yarns on its machine side, the rib forming yarns lying in spaced apart relation to define water conveying channels therebetween, there being a batt surface on the face side of the fabric needled through the warp and filling yarns and into the rib forming yarns, the rib forming yarns being heat fused following needling to render them essentially incompressible, the rib forming yarns being initially attached to the warp yarns by holding yarns which may be removed prior to the heat fusing or retained as a permanent part of the felt.

Abstract: An improved papermaker's fabric comprising warp and filling yarns woven in a preselected conventional unbalanced weave pattern modified such that every other warp yarn occupies a position with respect to the filling yarns opposite to that which it would normally occupy according to the above mentioned preselected conventional unbalanced weave pattern.

Abstract: A double layer endless woven forming fabric having a sheet surface fabric structure comprising relatively fine warp and filling yarns exhibiting substantially uniform crimp in both directions, and a relatively coarse wear side fabric structure having woven warp and filling yarns exhibiting crimp predominately in the warp yarns, the layers being joined by interlacing the warp yarns of the wear surface fabric structure with the filling yarns of the sheet surface fabric structure.

Abstract: An apparatus for aiding water removal from a moving paper web directs steam to a portion of the web and controls the distribution of steam in both the cross-machine and the machine direction of the web. In the preferred embodiment, a matrix of compartments is used to supply steam to the web, and the steam supply to each compartment is independently controlled.

Abstract: A laminate structure for acoustical applications which comprises a porous, flexible, non-woven, needle punched mat of inherently non-burning, fine glass or other material fibers affixed as a facing to a sound absorbing, flame retardant, flexible backing such as a layer of open cell foam or a mat of glass or mineral fibers. The invention also contemplates the method of manufacture of such a laminate structure. Depending upon the materials used therefor, the facing and the backing may be joined together by needle punching and subsequent chemical bonding, chemical bonding, flame bonding and, in the case of an open cell foam backing, the backing may be foamed in place on the facing forming an intimate bond therewith.

Abstract: Apparatus and method for dewatering papermaker's felt utilizing positive pressure, the felt being deflected in an arc of at least about 90.degree. but less than about 180.degree. by means of a dewatering shoe with a rounded nose having a radius of from about 2" to about 4", the nose of the shoe having an elongated orifice with an effective width of from about 1" to 4" through which air under pressure is directed into the felt. Low pressure flooding means or high pressure shower means may be mounted in the rounded nose of the shoe in advance of the dewatering orifice to direct a cleaning fluid into the felt in advance of dewatering.

Abstract: A papermaking fabric composed of a base having a fibrous batt needled to one surface thereof, the base being formed of interwoven core wrapped yarns, comprising core yarns which are effectively heat infusible and wrapping yarns which are effectively heat fusible, the fibrous batt being either heat fusible or heat infusible, the wrapping yarns of the interwoven base being heat fused to each other at their points of contact with each other on the side of the interwoven base opposite the fibrous batt.

Abstract: A dimensionally stable filter structure for high temperature applications and method of making it. The filter structure comprises at least one batt of relatively brittle fibers, known to possess outstanding degredation resistance at elevated temperatures, stitch-knitted with high temperature and corrosion resistant yarns.

Abstract: An improved shuttle box for use on a loom, the box having one or more shuttle receiving cells each containing an elongated binder which is adjustably mounted and pivotally movable under fluid pressure from a retracted position to an extended shuttle engaging position, the binder, upon contact by the shuttle, acting to provide controlled deceleration of the shuttle as opposed to impact stoppage of the shuttle, the shuttle box being constructed of non-metallic materials which act to dampen noise, the binder components and the fluid pressure applying means being cushioned to assist in noise reduction.

Abstract: A package for endless fabrics, such as forming fabrics used on papermaking machines, the package comprising a pair of inner cores inserted in an elongated endless fabric at its opposite extremities, one of the inner cores being surrounded by an outer core having a longitudinal slot through which the fabric projects, the outer core preferably being of split and hinged construction. The projecting portion of the fabric is wound around the outer core with the other of the inner cores juxtaposed to the rolled fabric and the cores secured together to form the package. The outer core is preferably encapsulated in cushioning material and the edges of the outer core defining the longitudinal slot through which the fabric projects may be enlarged to increase the wrap angle of the fabric, the package acting to prevent creasing of the fabric as it is packaged for shipment and storage.

Abstract: Generally, this invention relates to multilayered belts for use in a papermaking machine which comprise a fibrous base layer the fibers of which are resin encapsulated, and a substantially resin-free fibrous surface layer in which the portions of the fibers which contact the fibers of the base layer are also substantially entirely encapsulated with resin. The invention includes within its scope a method of manufacturing such a belt.

Abstract: Improved paper forming and tissue transfer fabrics having enhanced stability and stretch resistance as well as improved bicrimp configuration, the fabrics being characterized by the alternate use of very high modulus and very low modulus yarns in the machine direction of the fabrics, the alternate very high and very low modulus yarns being woven using either pick and pick or two picks in a shed weaving techniques, the very high modulus yarns having an initial (1%) modulus greater than 2.0 gpd and the very low modulus yarns having an initial (1%) modulus of 0.2 to 0.8 gpd.

Abstract: Generally, the present invention relates to a resin-treated filter fabric which comprises a surface or batt layer comprised of glass fibers which is joined, by needling, to an underlayer which is comprised of mineral fibers. The present invention includes within its scope a method of manufacturing such a filter fabric.

Abstract: The present invention relates to a novel felt construction for use in the press section of the papermaking machine. More particularly, this invention has to do with a papermakers' felt having a paper-sheet-contacting layer comprised of substantially flat fibers joined by any suitable means to either a woven or nonwoven intermediate batt layer and/or base layer.

Abstract: This invention relates to conveyor belt-like papermakers' fabrics for use in papermaking machines which comprise non-porous cables comprised of a plurality of yarns. Each yarn comprises at least two twisted monofilaments which are substantially circular in cross-sectional configuration.

Abstract: Generally, this invention relates to papermakers' belts for use in papermaking machines which comprise ultra high modulus load bearing yarn comprised of poly(para-phenylene terephthalamide).

Abstract: An endless belt comprising a signal element affixed thereto for identifying one complete revolution of such belt and an apparatus for cleaning such belt. Advantageously, such belt and cleaning apparatus may be used in combination with an apparatus such as, for example, a papermaking machine.

Abstract: A papermaker's belt particularly suited for use as a forming fabric, the fabric being of biplanar construction with sets of upper and lower filling yarns interconnected by warp yarns extending between the upper and lower surfaces of the fabric, the fabric being characterized by diagonally disposed sets of upper and lower filling yarns with the warp yarns extending diagonally between adjacent sets of the filling yarns in one direction and diagonally between the upper and lower yarns of another set of filling yarns in the opposite direction.

Abstract: Generally, the present invention relates to a resin-treated filter fabric which comprises a surface or batt layer comprised of glass fibers which is joined, by needling, to an underlayer which is comprised of mineral fibers. The present invention includes within its scope a method of manufacturing such a filter fabric.