Abstract: Roll machine and process for forming a roll machine. The roll machine includes a roll having a roll body and an elastic layer located on a periphery of the roll body, and a mating roll. At least one roll nip is formed between the roll and the mating roll, and the elastic layer has a radial thickness less than approximately 8 mm. The process includes covering the roll body with an elastic layer having a radial thickness less than approximately 8 mm and pressing the roll and the mating roll together to form a press nip.

Abstract: A paper machine roll, in particular a roll for a supercalender, which includes a frame and a polymer coating on the frame. The deformability of the polymer coating on the roll increases within a certain axial distance from the middle area of the roll toward the ends of the roll in order to compensate for the deformation state of the end areas of the roll frame, which deformation state is uneven when the roll is loaded.

Abstract: Flexible press sleeve for a press roll for treating a web includes an inside surface including a longitudinal press area adapted to be pressurized with a press shoe by directing pressure radially outward, and a flexible section on at least one end of the press area having a greater flexibility than a flexibility of the press sleeve outside the flexible section, without causing a significant weakening of the press sleeve within the flexible section. A press shoe includes the press roll and a mating roll forming a press opening with the press roll. A method of treating a web includes draining a fibrous pulp web by using the press shoe.

Abstract: Apparatus for drying receiver sheets prior to such receiver sheets receiving electrophotographic images, including at least one set of preconditioning rotatable rollers with each preconditioning rotatable roller in the set touching an opposing preconditioning rotatable roller to form a nip, wherein at least one of the preconditioning rotatable rollers in the set is formed from zirconia ceramic or zirconia composite; and the apparatus heating at least one of the surfaces of the preconditioning rollers of the set to dry receiver sheets as each passes through the nip.

Abstract: An apparatus for reducing or preventing vibrations of a roll set of a paper making apparatus, wherein the roll set comprises at least two rolls of which at least one is a soft roll coated with a compressible coating and comprising a temperature control system. The natural vibrational frequency of the roll set is changed during the operation of the apparatus by changing the temperature of the coating of the at least one soft roll. The changing of the natural frequency prevents resonance on a natural frequency of the roll set.

Abstract: Press device for treating a material web that may includes an impermeable press element having a press face, an opposing element, and a nip formed between the press element and the opposing element. The press device may also include a felt belt that guides the material web through the nip and that is positioned between the material web and the opposing element. The material web may be separated from the press element after leaving the nip because the press element may further include at least one of grooves and holes formed in the press face that close in the nip due to pressing forces to form a smooth surface, and that open after leaving the nip.

Abstract: A soft nip calender employing a compliant roll constructed of circumferentially superpositioned layers of compliant material which are progressively less compliant as the layers approach an underlying steel roll.

Abstract: A calendering system in a papermaking or board manufacturing process, the system comprising at least one press nip, an endless calender belt (30) having a core (32) and a compressible, elastic material bonded to the core (32), as well as a paper or paperboard web (16) which passes together with the belt (30) through the press nip and the dewatering of which is completely or at least substantially completely terminated earlier in the manufacturing process. The calender belt (30) has in its thickness direction a first hardness on the side (34) of the core (32) closest to the web (16) and a hardness on the opposite side (36) of the core (32) that is higher than the first hardness. The first hardness is so selected in relation to the web (16) that the surface (38) of the calender belt (30) engaging the web (16) can adapt its shape in the press nip (14) to unevennesses in the surface (20) of the web (16).

Abstract: A process and device for satining paper may include guiding a sheet through a roll gap defined by a heated hard roll and a soft roll having with a covering. A paper sheet width of the paper may be less than a width of a cylindrical part of each of the covering and the hard roll. The two rolls may be axially adjusted in relation to each other and in accordance with the paper sheet width. Further, the two rolls are positioned such that a first sheet edge is located adjacent a first end of the cylindrical part of the covering and a second sheet edge is located adjacent a second end of the cylindrical part of the hard roll. That is, the cylindrical parts of the covering and hard roll are positioned to be directly over each other, i.e., beyond the sheet edge, at most by a predetermined permissible edge width.

Abstract: A calender for satining paper through roll gap formed between a heated hard roll and a soft roller having an elastic covering. Overheating of an edge region of the covering, i.e., the portion not covered by the paper to be satined, may be prevented by utilizing continuous insulation belts. The insulation belt may reduce the transmission of heat from the surface of the hard roll to the elastic covering, at least in the roller gap.

Abstract: A precision roll stand includes a roll housing absorbing the rolling forces. In the roll housing rolls constituting a roll pair with their roll chocks are mounted so as to be rotatable and mutually adjustable by an adjustment device which changes the axial distance between the pair of rolls. A drive housing including a roll drive is connectable with the roll housing while establishing a drive connection of the roll drive with the rolls and being removable from the same while undoing the drive connection. In order to produce rolled products exhibiting extremely high measuring accuracies and to be able to exchange the rolls quickly and without difficulty, the roll housing has a frame which is open in the direction of adjustment of the rolls and contains and guides the chocks of the rolls. A crosshead for closing the frame carries the adjustment device designed as a pressure medium cylinder and is rigidly connectable with the frame. The drive housing is supported on the crosshead.

Abstract: A calender for treating a web of paper includes a stack of hard rollers and soft rollers. The stack includes a first set of processing nips and a second set of processing nips. Each processing nip is formed by a juncture of one of the hard rollers and one of the soft rollers. One side of the web of paper contacts against the hard rollers in the first set of processing nips and contacts against the soft rollers in the second set of processing nips. At least a last soft roller in the stack, which delimits a last processing nip that the web of paper passes through in the calender, has a lower surface roughness R.sub.a than a surface roughness R.sub.a of at least a first soft roller in the stack. The first soft roller delimits a first processing nip that the web of paper passes through in the calender. The surface roughness R. of the last soft roller is less than 0.35 .mu.m.

Abstract: A calender for webs of paper includes a hard roller having a smooth outer surface. A soft roller is disposed adjacent to the hard roller and forms a roll gap therebetween. The soft roller has a coating made of flexible plastic. The coating includes an inner layer and an outer layer. The inner layer is made of a first plastic material and the outer layer is made of a second plastic material. The outer layer has lesser flexibility and greater hardness than the inner layer. The outer layer has an outer surface having wear properties such that under normal operating conditions the average roughness R.sub.a does not exceed 0.5 .mu.m.

Abstract: In order to create a wear-resistant hard-surfacing for the rolls of high-pressure roll presses for the compressive size reduction of granular material, which is suitable for autogenous wear protection and which is simple from the fabrication standpoint and also exhibits a long potential surface life with minimized danger of cracking, even under the action of high pressing compressive loads, it is proposed in accordance with the invention that a multitude of profiles, such as, in particular, nub pins (17), arranged at intervals from one another, be welded onto the roll surface by mold welding, specifically with the assistance of a mold (11) laid on the roll body (10), which mold is provided with radial through openings (12, 13, 14), which are filled with surface weld metal, after which, after solidification of the weld metal, the preferably water-cooled mold (11) is lifted off the roll (10).

Abstract: A truss bend correction system having a pair of in-feed correction rollers, a pair of finish rollers, and an out-feed correction roller define a path for counterbending the joints of a truss to reform the nail plates and thereby flatten the overall truss. The in-feed correction rollers and the out-feed correction roller are oriented downwardly with respect to the finish rollers so that an undesired upward bow of a truss joint is counterbent downwardly, thereby straightening the joints of the truss.

Abstract: A cantileverable roll for use in a roll press, wherein the cantileverable roll cooperates with a backing roll. The cantileverable roll has a rotating surface and is either a solid rotatable roll body or a stationary roll body with a rotatable shell around it. A journal at each end of the cantileverable roll is supported in a respective bearing bracket. At one end of the roll, preferably the drive end, there is a non-rotating extension piece which extends out axially from the roll body and is fastened to the bearing bracket at that end. A tension bar or the like connects the extension piece to a stationary structural part and introduces force in the roll body which compensates for the weight of the roll when the other end of the roll is temporarily unsupported and the roll is cantilevered. The backing roll may also be cantilevered. The various techniques for supporting the one end of the roll by using the coupling element from the extension piece to the frame of the paper making machine are disclosed.

Abstract: An apparatus and method flatten a twisted veneer directly from the device which cuts the veneer from a board. In a particular implementation, the veneer is counter-twisted through a curved channel formed between two roller assemblies whose rollers are discretely disposed through a predetermined sector.

Abstract: An easy to assemble mounting for the cylinders and drums of printing machines is provided which at the same time reduces journal flexing and guarantees a high degree of rigidity in the drive wheel train. The stub journal of a cylinder is received in the collar of a driving wheel. The collar is rotatably supported in a bearing disposed in one of the press side walls and the collar is connected to the journal by means of connecting elements including a centering plate, locating pins and appropriate screws.

Abstract: A roll fuser assembly including a fuser roll and a pressure roll. The rolls are crowned and are supported in pressure engagement with each other to form a fusing nip. The pressure engagement of the rolls eliminate nonuniform nip loading in wide fusers as well as providing uniform velocity through the fuser roll/pressure roll nip. It is preferred that the crowned profile of one of the rolls be substantially to the center of the roll and that the other be offset therefrom. It is further preferred that the diameters of each of the rolls be substantially the same at each end.

Abstract: Roll press or mill with two adjacent rolls (2, 4) with cooperating compression surfaces, mounted in bearing housings located between an upper and lower box girder, one roll being adjustable, with a material feed system with at least one fill chamber (6) with walls (22, 24) parallel to the roll axes and extending into the roll gap (8) and with apparatus to eliminate the air entering the roll gap with the material, provided with air admission holes in the region of the roll gap leading into an air collection chamber connected with air outlets. On each side of the fill chamber walls, parallel to the axes, chambers (16, 18) extend essentially over the breadth of the compression surfaces of the rolls and are closed at their ends. The chambers are each connected to the roll gap by a passage (28, 30) formed between the compression surfaces at the perimeter of the rolls and the lower end of the walls adjacent to the walls of the filling chamber. The chambers (16, 18) are provided with air outlets (34, 36).

Abstract: A paper machine press roll comprising a metal core, a ground layer formed over the outer periphery of the core and made of a metal material having a small coefficient of expansion, and a mixture layer formed over the outer periphery of the ground layer and comprising a ceramic and a water retentivity imparting particulate substance such as mica. At least in a surface layer portion of the mixture layer, an organic high polymer such as synthetic resin or wax is filled in the interstices between particles of the ceramic and particles of the water retentivity imparting substance.

Abstract: Wooden boards which are deformably twisted about their longitudinal axes straightened by being passed through a path that is twisted in a direction opposite that of the boards. The degree of twist of the boards is automatically adjusted as a function of the humidity of the boards and possibly also as a function of the temperature of the boards.

Abstract: A laminating machine for paper protection, particularly a laminating machine with a motor and a transmission device located within a casing composed of an upper casing member and a lower casing member, a pair of rollers rotating in opposite direction; having a heating element, a thermal sensor, a heat distribution plate and a heater base to melt plastic film and adhere it to paper or card; and incorporated with a pair of back to back cooling plates to cool down the laminated paper or card.

Abstract: The invention relates to an elongated wooden structure and a roller press for producing the structure. The wooden structure consists of four pieces (31) joined together and extending from end to end of the structure, said pieces having uniform dimensions in both the transverse and longitudinal directions and an essentially rectangular cross section, the joint surfaces of said pieces being provided with jointing grooves (32) and corresponding tongues (33). The roller press comprises at least one four-roller unit in which the axes of rotation (5,6,7,8) of all four rollers (1,2,3,4) are located in one plane perpendicular to the longitudinal direction of the object to be pressed.

Abstract: A chamois wringer includes a base plate with an arm pivotally connected thereto. A first roller is mounted on the base plate, and a second roller is mounted on the pivotable arm such that pivoting of the arm will bring the second roller into rolling contact with the first roller. A chamois threaded between the rollers will be placed under compression as it is pulled between the rollers, to remove excess water from the chamois.

Abstract: A roller assembly for grain shellers, the assembly including a metal sleeve having locking lugs fixed therein, a sleeve of flexible material bonded to the exterior of the metal sleeve, the locking lugs being adapted for connection to a mounting hub, thereby to fix the metal sleeve to the mounting hub.

Abstract: A rotary printing press for printing strip paper, wherein a pressure roller is supported for rotation at each end by a pair of jaws of a supporting device on the printing unit. The jaws are lifted and lowered, together with the pressure roller, by a lifting device, and are opened and closed by an actuating device via a prismatic joint defined by a fixed portion and a portion moving with the jaws. The two portions of the prismatic joint mate in sliding manner as the jaws are moved by the lifting device, and, when mated, rotate integral with each other.

Abstract: A packing sheet calender comprises a cooled cylinder of small diameter and a heated cylinder of large diameter. The heated cylinder comprises a cylindrical casing and end walls with integral stub shafts projecting centrally from the end walls. At least one of the stub shafts is hollow. Circumferentially spaced axially extending bores are provided in the casing for the flow of hot water which is supplied by a tube system extending axially of the cylinder and comprising an inner tube and an outer tube surrounding the inner tube. Radial bores in one end wall connect the axially extending bores in the casing with the outer tube. Radial bores in the other end wall connect the axially extending bores in the casing with an annular chamber which is connected with the inner tube. The inner and outer tubes are connected through the hollow stub shaft with a device for supplying hot water to one of the tubes and withdrawing water from the other.

Abstract: A roller assembly for grain shellers, the assembly including a metal sleeve having first and second apertures therein, a sleeve of flexible material bonded to the exterior of the metal sleeve with portions of the flexible material sleeve extending into the metal sleeve first apertures, the metal sleeve being adapted for connection to a mounting hub, and pin means extending from the mounting hub and into the second apertures of the metal sleeve.

Abstract: Disclosed is an image forming apparatus with an image forming device for forming an unfixed image on a recording material and; first and second rotatable members for forming a nip for conveying the recording material supporting the unfixed image. The second rotatable member has its maximum diameters between a longitudinal center and one longitudinal end and between the center and the other longitudinal end thereof.

Abstract: A calender comprises at least one pair of rolls through which a web to be calendered runs. One roll in each pair of rolls is a hard roll which is a heated metal roll, and the other roll in each pair of rolls is a roll provided with a resilient coating. The face of the roll with the resilient coating is also heated to a high temperature, advantageously to the same temperature as the heated metal roll.

Abstract: A compacting apparatus is provided for compressing material within a flexible bag including a pair of compression rollers which move from an upper to a lower position within the apparatus while contacting the bag. Vertically extending guide rails are provided for guiding the rollers in their movement and the rails are oriented in diverging relationship to each other to allow the rollers to move outwardly as they move downwardly. In addition, the guide rails are mounted to permit at least one of the rollers to pivot outwardly as the bag is filled with material and as the material is compacted.

Abstract: A compact roller system including a housing for a plurality of disks, each independently supported within a support member having sides which partially envelop the external peripheries of the disk. The disks do not separate or dislodge from their corresponding support members, yet the disks are capable of rotating within their corresponding support members. Each disk/support member shifts radially within the housing to accommodate the varying contours of a workpiece surface. The disks, in combination with their corresponding support members, apply an adjustable, evenly distributed compaction force to the workpiece surface through internal pressurization of the housing with a compressed gas.

Abstract: Apparatus comprising a frame, a pair of generally parallel rolls each having trunnions at its ends journaled for rotation in bearings in the frame with a gap between the rolls, and means for driving the rolls. The rotation of each trunnion in its bearing tending to generate heat which tends to raise the temperature of the trunnions and frame above the ambient temperature. The apparatus includes a cooling system, having a coolant supply manifold and a coolant return manifold, each with a branch for each bearing, and a pump for circulating coolant through each bearing. The cooling system also includes a device for controlling the temperature of the coolant.

Abstract: To reduce vibrations occurring in sets of rolls that are immediately successive along the direction of travel of a web conducted through the nips formed between the roll sets, a process, especially for use in double calendars used to treat paper webs, is disclosed in which the natural frequency of one set of rolls is altered with respect to the natural frequency of the other set of rolls. In this manner, randomly occurring vibrations in the first set of rolls do not produce a resonance excitation of the second set of rolls. A roll apparatus having reduced vibratory tendencies also is disclosed.

Abstract: A magazine for storage of elastic supercalender rolls has two upright frame members each of which carries several tracks at different levels and reciprocable roll holders in the tracks. Chains are provided to move the holders between extended position, in which they are accesible for reception of rolls from a supercalender or from another location, and retracted positions in which the axes of stored rolls are located in a common vertical plane. Each holder on one of the frame members is located at the level of a holder on the other frame member. Movements of holders on one of the frame members are synchronized with movement of corresponding holders on the other frame member.

Abstract: A heat roller type fixing device for an electrophotographic copier, printer, facsimile apparatus or similar electrostatic image recorder includes a hollow cylindrical fixing roller having a heating element thereinside and a hollow cylindrical pressing roller held in pressing contact with the fixing roller. A shaft is received in the pressing roller while two annular pressing members are mounted on the shaft through individual bearings so as to urge the cylindrical inner periphery of the pressing roller. The pressing members are each movable on and along the shaft to any predetermined distance as measured from an end of the pressing roller.

Abstract: A conditioning roll mechanism is disclosed for use on a mower-conditioner to provide uniform conditioning of crop material passing therebetween. Each conditioner roll is formed with a plurality of transversely extending lobes interspersed with corresponding troughs to provide an intermeshing configuration with the opposing conditioning roll. The configuration of the external surface of each conditioning roll permits the rolls to be mounted in a nominal working position in which a substantially uniform clearance is maintained between the conditioning rolls during rotation thereof to provide uniform conditioning of the entire crop material plant.

Abstract: A heatable glazing or calendering roll has a roll body, peripheral bores in the roll body for the passage of a fluid heat carrier, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier in at least one flange journal and cutouts for the distribution of the fluid heat carrier from the supply conduits to the peripheral bores and from the peripheral bores to the discharge conduits; the cutouts are disposed in the end faces of the or each flange journal and are bordered on the opposite side by the planar end face of the roll body.

Abstract: An elastically deformable press cover of a press for dewatering web material, in particular of a dewatering press for paper making machines, or the like. The press cover surrounds a support and is an endless belt. At its outside, which faces toward the web, the press cover has ridges which lie in preferably equidistant diametral planes or run round the cover in the form of a helical line. Between the ridges there remain grooves which are open to the outside. As seen in cross-section, the top lands of the ridges are concave.

Abstract: A back-up roll in a rolling mill is provided with multiple cylindrical rollers fit circumferentially between a roll shaft of the back-up roll and an outer casing thereof, and a tapered roller bearing is provided between the roll shaft and outer casing and juxtaposed to said cylindrical rollers and which receives a thrust load acting on the cylindrical rollers. The tapered roller bearing is composed of an inner ring set to the outside of the roll shaft, an outer ring fixed to the inside of the outer casing and in contact with ends of the cylindrical rollers, and multiple tapered rollers fit between the inner and outer rings.

Abstract: An apparatus is for crushing at least one of a plurality of metal cans having a predetermined diameter and a predetermined length less than about twice the predetermined diameter. The apparatus includes a pair of cylindrical rollers mounted for rotation in opposite directions about parallel horizontal axes with a predetermined distance therebetween. Each of the rollers has a predetermined roller diameter greater than four times the predetermined diameter of the can. An array of extensions on the cylindrical surface of each of the rollers extends a predetermined height from the cylindrical surface and is separated from adjacent extensions on the cylindrical surface to cause the extensions of the array to cover less than ten percent of the cylindrical surface to allow general alignment of and positioning of the metal cans therebetween.

Abstract: A pressure fixing roller has a hollow cylindrical member formed of a ceramic material, a shaft member of a metallic material extending through the portion of the hollow cylindrical member and provided with a predetermined clearance between it and the hollow cylindrical member, and end keep members fixedly provided on the shaft member to keep the opposite ends of the hollow cylindrical member urged inward. A pressure fixing device has such a pressure fixing roller.

Abstract: A roller mill such as a roll press or roll jaw crusher with crushing rollers and end face plates for lateral limitation of the nip mounted with pivotal links on the side walls of a product delivery chute and triangularly spaced support springs for the face plates urging them toward the nip with wear-resistant coatings on the inner surface of the face plates with the face plates having a lower removable extension.

Abstract: An elastic rotatable member includes a base member, an elastic layer on the base member, the elastic layer defining a plurality of opening extending in a longitudinal direction of the elastic rotatable member, wherein the openings are arranged such that any radial line in a cross-section of the elastic rotatable member in a direction substantially perpendicular to the longitudinal direction, crosses at least two of such openings.

Abstract: Processing and outfit for the extraction of cane sugar by pressing canes and magma between several pairs of fluted rollers, wherein each pair of rollers is completely submerged in a tank (C) and fed through a hopper (13), and wherein a constant recirculation of the magma, from each tank towards the corresponding hopper, with a significant flow rate on the one hand, and a countercurrent circulation of the bagasse and the juice with a lower flow rate in the different tanks (C.sub.1, C.sub.2, C.sub.3) corresponding to the different pairs of rollers on the other, are combined.

Abstract: For forming fibrous crop or like materials into self-supporting products, an apparatus comprising first and second compression members arranged so that opposed closing faces of the compression members co-operate to define the principal pressure-generating surfaces of a compression space for a charge of the material, protrusions extending from one or both of said opposed faces being effective to define walls of the compression space, and drive means operative to reduce the distance between the opposed faces of the two compression members until there is minimal separation of the two members in the vicinity of the leading edges of the protrusions.

Abstract: A method for controlling the transverse thickness profile of paper or other web-like product by controlling temperature, including the axial temperature profile, of the mantle of a roll forming a nip with another roll in the manufacture of the paper or other web-like product includes forming a layer of heat transfer liquid on the inner surface of the mantle under the effect of the centrifugal forces generated by the rotation of the mantle, the layer of heat transfer liquid being divided into separate annular sections, and controlling the temperature of the heat transfer liquid layer of each of the sections. A roll in accordance with the invention includes a cylindrical outer mantle rotatably mounted at its axial ends, a stationary inner shaft situated within the mantle and partitions for dividing a layer of heat transfer liquid formed on the inner surface of the mantle into a plurality of separate annular sections.

Abstract: A calendering device has a plurality of pressure rollers and an opposing plurality of counterpressure rollers, each rotatably mounted on a piston rod movable in a direction for permitting the pressure rollers and counterpressure rollers to approach one another to calender a product. The pistons of the piston rods are mounted within pneumatic casings and are moved by a diaphragm within the pneumatic casings. There is no contact between the pistons and the walls of the pneumatic casings, thereby reducing the frictional resistance to the movement of the rollers. Means are provided for equalizing the pressure applied to a roller and its corresponding counter roller. Separate pneumatic casings and diaphragms may be provided for each piston rod, or several of the pressure rollers or countepressure rollers may be moved by a single diaphragm, which can be in the form of an elongated hose.

Abstract: A press roll with adjustable sag includes a yoke on stationary flexure girder and a hollow roll shell rotatable around the flexure girder. A hydraulic support device disposed between the flexure girder and the roll shell transmits a pressing force from the flexure girder to the roll shell. An outer gear rim which meshes with a drive pinion is fastened to the roll shell. A gear housing which surrounds the gear rim and the drive pinion, is supported by means of support bearings against the roll shell by a centrally arranged support disk thereof and the support bearings are disposed radially within the outer gear rim on both sides of its support disk. On each side of the outer gear rim, the gear housing is provided with a tubular collar piece on the outside of a support bearing.