Roll Crown Control Patents (Class 100/162B)
  • Patent number: 4658621
    Abstract: The rolling apparatus contains a controlled deflection roll and, in order to improve uniformity of the roll nip or gap or to more precisely maintain a desired rolling profile, a counter roll contains a journal-less tubular roll or shell which is articulatedly supported at a support beam or at supports of a roll stand. The support distance of the counter roll at the most is equal to the effective support distance in the controlled deflection roll. The bending lines of the controlled deflection roll and of the counter roll thus can be matched in an improved manner.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: April 21, 1987
    Assignee: Sulzer-Escher Wyss AG
    Inventors: Christoph Link, Herbert Brandiser
  • Patent number: 4653396
    Abstract: The present invention is directed toward a controller for controlling local calender roll diameters by directing temperature controlled fluid against selected slices of a rotating calender roll. The calender roll has a diameter which responds to changes in temperature. Therefore, thermal expansion or contraction, resulting from localized heating or cooling of the calender roll by the temperature controlled fluid, corrects local non-uniformities in the spacing between cooperating calender rolls. The invention conserves energy by recirculating the temperature controlled air.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: March 31, 1987
    Assignee: Measurex Corporation
    Inventor: Gunnar Wennerberg
  • Patent number: 4651552
    Abstract: A roll for a foil-drawing calender or the like which is substantially solid, has a central longitudinal bore hole and has journals supported in outer bearings in a roll stand. In the longitudinal bore hole is a stationary core which is supported, at axial locations corresponding to the ends of the working width, via inner bearings in the longitudinal bore hole and is braced via a hydraulic force-exerting arrangement acting in the working plane of the roll in a direction toward the roll gap and against the inside circumference of the longitudinal bore hole. In the vicinity of the inner bearings and in the region of the outer bearings, load-relieving hydraulic force-exerting arrangements are provided which brace the core against the inside circumference of the longitudinal bore hole and act in the action plane of the roll in the direction opposed to that of the other hydraulic force-exerting arrangement.
    Type: Grant
    Filed: August 2, 1984
    Date of Patent: March 24, 1987
    Assignee: Eduard Kusters
    Inventor: Karl-Heinz Ahrweiler
  • Patent number: 4651547
    Abstract: At an installation comprising a roll stand having at least one roll of the variable camber type, comprising a fixed support and a casing carried by at least three jacks and rotationally movable about the support, the pressure of the fluid in each of the jacks (14), the position of the pistons of these jacks, the speed of rotation of the roll, and the flatness and thickness of the flat product are measured. The position of one of the jacks (14b) is controlled by the thickness measurement. The pressure in the other jacks (14a, 14c, 14d, 14e) is controlled by the pressure in the one jack (14b). The positions of the end jacks (14a and 14e) are compared and the pressure in the jacks (14) is modified in order to bring the tilt of the roll to a suitable value. The deformation of the fixed support is calculated and the shape of the generatrix of contact of the roll is determined. The pressure in the jacks (14) is modified in order to bring the generatrix to a reference shape.
    Type: Grant
    Filed: January 5, 1984
    Date of Patent: March 24, 1987
    Assignee: Clecim
    Inventors: Michel Morel, Marc Valence
  • Patent number: 4644860
    Abstract: In a roll arrangement a control device is applied with information concerning the width of the web, and the pressure profile to be applied to the web, and the average pressure to be applied to the web. Control signals are generated provided to support elements which support a rotatable shell of a roll on a fixed beam to create an appropriate nip pressure.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: February 24, 1987
    Assignee: Eduard Kusters Maschinenfabrik GmbH & Co. KG
    Inventor: Bernhard Brendel
  • Patent number: 4637109
    Abstract: A cylinder construction in which a flexing force can be exerted on the interior surface of a hollow cylinder intermediate the ends thereof. The hollow cylinder is mounted for rotation about a shaft having an eccentric bearing intermediate the ends thereof. An eccentric bearing at each end of the shaft is adjustable to neutralize the effect of the intermediate bearing or to adjust the flexing force on the cylinder.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: January 20, 1987
    Assignee: Motter Printing Press Co.
    Inventor: Jack Bryer
  • Patent number: 4633774
    Abstract: A control device in particular in a multi-roll press (22 to 24) of a calender intended for the glazing of a continuous thin web, such as a paper web, which said press comprises a compensated upper roll (22), a compensated lower roll (24), and at least one press roll (23) fitted between the rolls. The control device itself comprises a press-load control circuit (B, C, D, 11, 14, 15; A, 29, 30), a compensation circuit (E, 16, 17) for the upper roll (22), as well as a compensation circuit (F, 27, 28) for the lower roll (24). According to the invention, both of the compensated circuits (E, 16, 17 and F, 27, 28) are, via their own feedbacks (12 and 13), connected to the control circuit (B), which is fitted so as to select the most slowly changing one from among the signals of the feedbacks (12 and 13) and to brake down the roll (22 or 24) whose compensation is being varied most rapidly.
    Type: Grant
    Filed: May 8, 1985
    Date of Patent: January 6, 1987
    Assignee: Oy Wartsila AB
    Inventors: Harri Kuosa, Tapani Kultaranta
  • Patent number: 4625637
    Abstract: The roll assembly of a calender has at least one roll with a deformable shell which surrounds a rigid carrier and whose end portions surround discrete antifriction bearings. The intermediate portion of the shell surrounds one or more rows of hydrostatic supporting elements which can be acted upon by adjustable fluid-operated motors to change the shape of the intermediate portion in a plane including the axes of the one roll and the neighboring roll as well as at right angles to such plane. Stresses which are applied to the bearings for the end portions of the shell are monitored by several sensors which transmit signals to a control system to regulate the deformation of the shell in such a way that the stresses upon the bearings are minimized or reduced to zero. This enables the intermediate portion of the shell to undergo deformation which is best suited for optimum treatment of the material passing through the nip of the one roll and the neighboring roll.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: December 2, 1986
    Assignee: Kleimwefers GmbH
    Inventors: Josef Pav, Reinhard Wenzel, Rainer Schmidt, Peter Svenka, Richard Rauf
  • Patent number: 4612692
    Abstract: A pressure cylinder in which an outer tubular roll is rotatably supported at its ends by a central shaft passing therethrough. The central portion of the shaft engages with radial play in a tubular bush disposed within the outer roll and rotatably supported thereon. A bladder having a variable volume is interposed between the bush and the shaft and extends circumferentially about the shaft over an arc less than 180.degree..
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: September 23, 1986
    Assignee: Componenti Grafici s.r.l.
    Inventor: Bruno Molinatto
  • Patent number: 4607420
    Abstract: In an elongated heatable roller for a machine for manufacturing tape-like material, such as a paper machine, and comprising an outer sleeve and a displacement cylindrical member disposed in the outer sleeve so that a clearance for passing a heat-conducting fluid is formed between the outer sleeve and the displacement member. Imbalance-compensating masses are provided for compensating for imbalance occurring on the roller and causing deflections of the roller. The imbalance-compensating masses are attached to the inner surface of the displacement member and preferably midway between the ends thereof.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: August 26, 1986
    Assignee: Schwabische Huttenwerke GmbH
    Inventor: Erich Vomhoff
  • Patent number: 4606264
    Abstract: A web of paper or similar material is subjected to at least one nip formed by an iron roll and a compliant roll. The iron roll is heated to a temperature of at least the temperature at which the fibers in the web begin to deform. In the case of paper this is approximately 350.degree. F. Preferably the web is passed through two nips the first nip polishing one side of the web, the second nip polishing the other side. The result is a web having improved gloss without substantial loss of bulk and with minimum mottling.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: August 19, 1986
    Assignee: Wartsila-Appleton, Incorporated
    Inventors: Ronald D. Agronin, Paul J. Klemmer
  • Patent number: 4598448
    Abstract: A press roller is provided which permits adjustable bowing under load. The press roller has a hollow, rotatable roller casing through which a stationary cross head extends. A semi-circular pressure chamber is formed between the cross head and the roller casing. In this chamber, two annular pistons are provided which rest on one end surface of the inner surface of the roller casing and are guided in a sealing manner in recesses in the cross head. To prevent bending oscillations by the cross head, the annular pistons enclose substantially rigid fluid cushions which are isolated from one another.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: July 8, 1986
    Assignee: J. M. Voith GmbH
    Inventors: Christian Schiel, Georg Zurn
  • Patent number: 4597326
    Abstract: Regulating means in a roller press comprising a number of rolls for the adjustment of a press load and a deflection in deflection compensated rolls, especially in a calander stack provided for the glazing of a continuous thin running web like a paper web. The outer-most rolls in said roller press comprise means for the deflection compensation and one or several different press rolls, which are located between these outer-most rolls. Said roller press is provided with a feed-back connection arranged between a control circuit of the press load and a deflection compensation circuit of the deflection compensated rolls, which feed-back maintains a ratio between the press load and the hydraulic pressure in a roll of said compensable rolls.
    Type: Grant
    Filed: September 7, 1984
    Date of Patent: July 1, 1986
    Assignee: Oy Wartsila Ab
    Inventor: Tapani Kultaranta
  • Patent number: 4581797
    Abstract: Two parallel rows of support elements are provided in a roll assembly for a controlled deflection roll comprising a stationary roll support and a rotatable roll shell supported by the support elements at the rotatable roll support. The support elements of one row are axially displaced or offset with respect to the support elements of the other row. The support elements of one row are circumferentially aligned with the spaces in the other row and partially overlap or overlie the support elements thereof. As a further modification the support elements of the two rows may also interleave in the circumferential direction. The roll pressure can be varied or adjusted by the individual supply of pressure fluid to individual support elements permitting finer and more accurate adjustment and regulation of the contact pressure at a greater number of regulation points in a roll device.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: April 15, 1986
    Assignee: Sulzer-Escher Wyss AG
    Inventor: Rolf Lehmann
  • Patent number: 4573402
    Abstract: System and method for controlling the caliper of a web of material acted upon by one or more pressure rolls. The caliper is controlled by adjustment of the diameter of the roll, and the roll is locally heated and cooled by a combination of impingement, radiant and convective heat transfer.
    Type: Grant
    Filed: March 5, 1985
    Date of Patent: March 4, 1986
    Inventors: Rajeeva Sharma, C. Eric Kan
  • Patent number: 4570314
    Abstract: A press roll contains a stationary roll support or beam and a roll shell rotatable about the stationary roll support, the roll shell being formed of an easily deformable material. The roll shell is supported at a support surface located at the region of the roll support. This support surface can be convex and possess a larger radius than the radius of the roll shell, can be planar or concave. Guide surfaces possessing a convex profile laterally merge at the support surface. The support surface and the guide surfaces are provided with a pressure lubrication and possibly with hydrostatic bearing pockets. A support part or element can be movable in relation to the stationary roll support or beam in the manner of controlled deflection rolls.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: February 18, 1986
    Assignee: Escher Wyss Aktiengesellschaft
    Inventors: Herbert Holik, Helmut Hund, Peter Mirsberger
  • Patent number: 4553297
    Abstract: The cavity or gap between shell and arbor of a hydraulically inflatable roll also houses metal support elements which may be adjusted to fill that gap partially or wholly. The roll support elements are mating wedges, preferably a pair of sawtooth profiled metal ring assemblies with inclined faces bearing on each other. The degree of support is varied by moving one assembly axially on the other. Hydraulic apparatus for so moving an assembly is contained with the roll arbor.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: November 19, 1985
    Assignee: White Consolidated Industries, Inc.
    Inventor: Werner W. Eibe
  • Patent number: 4520723
    Abstract: A pressure roll for use in a calender has a beam whose end portions are mounted in a stationary frame and which is spacedly surrounded by a hollow cylindrical shell. Groups of hydrostatic supporting elements are installed in the space between the shell and the beam, and each such group has several supporting elements, as considered in the circumferential direction of the shell. Each supporting element has several hydraulic pressure transmitting cylinder and piston units which are adjacent to each other, as considered in the circumferential direction of the shell. The axis of the shell is held in a supporting plane which includes the axis of the pressure roll as well as the axis of an adjacent roll, and such retention of the axis of the shell in the supporting plane is effected exclusively by regulating the pressure of hydraulic fluid in selected pressure transmitting units. The end portions of the shell are movable radially of the respective portions of the beam.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: June 4, 1985
    Assignee: Kleinewefers GmbH
    Inventors: Josef Pav, Reinhard Wenzel
  • Patent number: 4514887
    Abstract: A calender roll wherein a hollow rotary cylindrical shell surrounds a stationary carrier and the latter supports a set of hydraulic cylinder and piston units serving to urge the external surface of a bearing element toward the internal surface of the shell. The external surface of the bearing element is formed with liquid-filled pockets each of which communicates with the cylinder chamber of a pressure generating unit. The cylinder chambers receive pressurized liquid from a pump via first conduits whose resistance to the flow of liquid is more pronounced than that of second conduits which directly connect the cylinder chambers with one or more hydropneumatic accumulators.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: May 7, 1985
    Assignee: Kleinewefers GmbH
    Inventors: Richard Rauf, Josef Pav, Klaus Scholl
  • Patent number: 4509237
    Abstract: An arrangement containing a controlled deflection roll which is supported by means of support or pressure elements against a roll support or beam. There is also provided a regulation arrangement for regulating the position of the roll shell, wherein the position of the roll shell at least at both of its opposed ends is detected by position sensors or feelers and deviations from a set or reference value are processed into two adjustment or positioning magnitudes which act upon the support or pressure elements. Both of the adjustment magnitudes are formed while taking into account a possible difference between both of the reference value-actual value differences and thereafter weighted and grouped together with further adjustment magnitudes and inputted to the support or pressure elements.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: April 9, 1985
    Assignee: Escher Wyss Aktiengesellschaft
    Inventors: Karl Volz, Christoph Link, Wolf-Gunter Stotz, Peter Heitmann
  • Patent number: 4506421
    Abstract: In a controlled deflection roll comprising a rotating shell forming the working roll periphery and a stationary beam extending lengthwise through the shell and spaced all around from the inner periphery of the shell, the space between the beam and the inner periphery of the shell, in the neighborhood of the operative plane, is divided into chambers by longitudinal seals and a number of transverse seals, the chambers have separate feed lines and each pair of adjacent chambers has a common transverse seal between them. Neighboring chambers are connected by a duct and non-return valves so that the transverse seal is always acted upon by the pressure of the higher-pressure chamber and pressed against the inner periphery of the shell. The chambers can be formed on the side of the beam facing the nip and also on the side remote from the nip and can also be individually filled with pressure fluid at different temperatures.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: March 26, 1985
    Assignee: Eduard Kusters
    Inventors: Valentin Appenzeller, Eduard Kusters
  • Patent number: 4502312
    Abstract: An arrangement for controlling the pressing or line force of a controlled deflection roll comprises a common adjustment or setting element for separate controllable supporting force sources or force-applying sources. Between the adjustment element and the force-applying sources there are connected converters for generating control signals in accordance with a conversion function which, depending upon the nature and/or site of the force-applying sources, has different characteristics. The converter enables interposing correction signals.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: March 5, 1985
    Assignee: Escher Wyss Aktiengesellschaft
    Inventor: Ignazio Marchioro
  • Patent number: 4498383
    Abstract: A system of rolls for use in a calender, printer or rolling mill has a pair of rolls at least one of which has a hollow cylindrical shell with an elastically deformable line. The shell surrounds a stationary carrier and confines a row of electromagnetic or hydraulic force applying devices which can be adjusted individually to thereby regulate the pressure between the two rolls and hence the temperature at the exterior of the liner. Such temperature is monitored by one or more sensors, and the signals from such sensors are processed by a computer which regulates an adjusting unit for the force applying devices so that the pattern of temperatures along the external surface of the liner matches an optimum pattern.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: February 12, 1985
    Assignee: Kleinewefers GmbH
    Inventors: Josef Pav, Wimmar Schmitz, Reinhard Wenzel
  • Patent number: 4487122
    Abstract: A system for compensating for roll deflection to provide uniform contact pressure across the width of a web disposed between a pair of counter rollers, comprising a first roller mounted for rotation, a second roller mounted for rotation about a deflectable shaft, pressure applying means coupled to the ends of the deflectable shaft for moving the second roller into contact with the first roller, the second roller including an outer shell mounted for rotation relative to the deflectable shaft, a pair of end bearings disposed adjacent the ends of the outer sleeve and a pair of main bearings disposed inwardly from the end bearings a predetermined distance to transmit the applied pressure uniformly over the face width of the second roller when the second roller is used with a flexible first roller, and self-adjusting deflection compensating means arranged proximate to the deflectable shaft for applying pressure to the ends of the outer shell in response to the deflection of the deflectable shaft by the pressure ap
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: December 11, 1984
    Assignee: Gravure Research Institute, Inc.
    Inventors: Harvey F. George, Robert H. Oppenheimer
  • Patent number: 4481799
    Abstract: An arrangement for regulating a rolling mill for metal rolling, the work rolls of which are supported by guided roll shells of a lower controlled deflection roll and an upper controlled deflection roll, the roll shells being supported by means of hydrostatic pressure or support elements upon a related roll support or beam. First regulation circuits are provided for regulating the pressure of the pressure or support elements of the controlled deflection rolls. A second regulation circuit for the position of the roll shells overrides the first regulation circuits, so that adjustment output magnitudes of the second regulation circuit can be impressed as reference or set values or adjustment magnitudes upon the first regulation circuits.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: November 13, 1984
    Assignee: Escher Wyss Aktiengesellschaft
    Inventors: Adolf Glattfelder, Heinz Guttinger, Josef Mercx
  • Patent number: 4480452
    Abstract: In a rolling mill containing two work rolls and, as desired, supporting or back-up rolls, a rapid adjustment of the roll gap or nip with elimination of effects due to elastic elongation of the roll framework or stand is achieved in that when structuring at least one of the rolls as a controlled deflection roll containing a stationary roll support and a rotatable roll shell rotating thereabout, there is measured the position of the inner side or surface of the roll shell and an automatic control serves to adjust or readjust the roll gap or nip by causing changes in the pressure exerted upon the hydrostatic supporting or pressure elements placed intermediate the stationary roll support and the rotatable roll shell.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: November 6, 1984
    Assignee: Sulzer-Escher Wyss Limited
    Inventor: Eugen Schnyder
  • Patent number: 4480537
    Abstract: The invention comprises a method and apparatus for accurately calendering a web of material, such as paper. Zone control rolls of variable geometric profile are provided for a super calender at the top and bottom nips. The upper zone control roll has its geometric profile along the nip altered as a function of web caliper. The bottom zone control roll has its geometric profile altered as a function of temperature measured at the bottom compliant roll of the super calender.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: November 6, 1984
    Inventors: Ronald D. Agronin, Paul J. Klemmer
  • Patent number: 4480459
    Abstract: A rolling mill is disclosed containing a roll stand equipped with two work rolls which are braced at back-up or support rolls which can be constructed as controlled deflection rolls. The work rolls are equipped at their opposed ends with bending devices for applying a bending moment. Simplified designs of the rolling mill contemplate constructing one of the back-up or support rolls as a solid roll. Furthermore, one of the work rolls can be omitted.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: November 6, 1984
    Assignee: Escher Wyss Aktiengesellschaft
    Inventors: Hugo Feldman, Heinz Guttinger
  • Patent number: 4471515
    Abstract: Elongated hollow members or tubes frictionally engage the interior wall of a hollow corrugating roll or a hollow pressure roll of a single facer so as to minimize the elastic vibration thereof and thereby to minimize the noise developed and transmitted during the operation of the single facer. A plurality of such tubes of a given diameter are arranged circumferentially about the interior wall of the shell of a roll of a single facer in such manner that each of the tubes frictionally engages the interior wall and so that each of the tubes also engages the adjacent tubes on either side thereof, thereby providing an assembled structure in which the plurality of tubes resist the elastic deformation of the roll and the resultant elastic vibratiion and thereby reduce the noise level.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: September 18, 1984
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hiroyuki Takenaka, Keiichi Katayama, Kouichi Tokiyasu, Tadashi Hirakawa
  • Patent number: 4470283
    Abstract: A roll stand arrangement contains work rolls and back-up or support rolls, the work rolls being laterally supported by hydrostatic support ledges. Within each upright or support stand of the roll stand arrangement there is provided a guide frame which is guided within a window of the related support stand together with mounting elements for the back-up or support rolls. Within the guide frame there are guided the mounting elements of the work rolls in slide elements. There are simultaneously pivotably supported in the slide elements the shaft or bearing journals of the support ledges.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: September 11, 1984
    Assignee: Escher Wyss Aktiengesellschaft
    Inventor: Eugen Schnyder
  • Patent number: 4464921
    Abstract: In roll arrangements composed of a controlled deflection roll and a counter element the controlled deflection roll is supported by discrete force-applying sources. On the one hand, these force-applying sources are set or adjusted in accordance with a predeterminable mean pressing force and, on the other hand, also can be externally corrected. An external correction also influences the pressing force at the region of neighboring force-applying sources, sometimes in an undesired fashion. According to the invention when there is accomplished an external correction there is acted upon in an opposite sense at least one force-applying source neighboring the externally corrected force-applying source.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: August 14, 1984
    Assignee: Escher Wyss Aktiengesellschaft
    Inventor: Miroslav Surat
  • Patent number: 4462203
    Abstract: In a roll baling machine having a floor roller and an apron which cooperate in suitable manner to form roll bales, a sprocket-shaped member is provided to support the transverse tubes of the apron against bending and twisting loads during bale formation and thereby prevent damage to the apron.
    Type: Grant
    Filed: September 3, 1982
    Date of Patent: July 31, 1984
    Assignee: Sperry Corporation
    Inventors: Stephen C. Schlotterbeck, Francis L. Uhland, Jr., Willis R. Campbell, John H. Freimuth
  • Patent number: 4445349
    Abstract: A hydraulically inflatable roll for flat rolled products is formed with a constant cross section internal fluid channel spaced uniformly from its working surface and extending spirally from end to end of the roll. The channel is connected through an end of the roll to a source of hydraulic fluid under pressure and also to a pressure transducer which in turn is connected to a display device. A proximity trigger is associated with an end of the roll so as to signal the start and the end of the circumferential travel of the channel past the contact line between roll and work when the roll is rotated, and the pressure exerted on that moving area in that interval is continuously measured and transmitted to the display device. Means are also disclosed for using that signal to control gauge and shape of the rolled product.
    Type: Grant
    Filed: November 17, 1981
    Date of Patent: May 1, 1984
    Assignee: White Consolidated Industries, Inc.
    Inventor: Werner W. Eibe
  • Patent number: 4440077
    Abstract: A press roller, with adjustable bending characteristics, has a hollow roller shell which rotates around a fixed yoke. The shell is supported at each end by a self-aligning bearing. The press roller forms a pressure nip with a counter roller. Along this pressure nip, there is a semi-circular main pressure chamber arranged between the yoke and the roller shell, the length of which is equal to the length of the pressure nip. Adjoining this main pressure chamber there are provided at each end of the roller shell, a respective semi-circular additional pressure chamber. With a view to the bending characteristics of the yoke in the operation of the press roller, the axial and circumferential seals defining each additional pressure chamber are arranged on a respective annular shaped seal support. The latter support is supported by studs so that it may tilt on the yoke and shift axially with respect to the yoke.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: April 3, 1984
    Assignee: J. M. Voith GmbH
    Inventor: Christian Schiel
  • Patent number: 4432277
    Abstract: Cooperating hard and soft paper calendering rolls have probes for measuring the soft roll's temperature at different zones along its length and units for controlling the nip line pressure in each zone in dependence of the zone's measured temperature.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: February 21, 1984
    Assignee: Eduard Kusters
    Inventor: Werner Hartmann
  • Patent number: 4414890
    Abstract: A press roll with adjustable flexion has a roll shell mounted to rotate around a fixed yoke and mounted with self-aligning bearings on a support cap in which the yoke is also supported on its own curved support. The press roll works in conjunction with a mating roll to form a press zone, near which there is a main hydraulic support that is positioned between the yoke and the shell and that transfers support forces from the yoke to the shell. The distance between the bearings of the shell is equal to that of the mating roll. The self-aligning bearing and the curved yoke support are mounted concentrically on a tubular collar of the support cap. There can also be supplemental supports outside the press zone for imposing additional flexion on the roll shell.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: November 15, 1983
    Assignee: J. M. Voith GmbH
    Inventors: Christian Schiel, Robert Wolf
  • Patent number: 4414889
    Abstract: A rolling device is shown, having two press rollers of which at least one is a deflection equalizing roller. The equalizing roller has a support, support elements and a roller shell rotating around the support which is displaceable relatively to the support in a plane containing the axes of the rolls.In order to reduce the deflection of the supports under the stress produced during use by the support elements the supports are secured in the side panels and without clearance, stiffened against bending.Therefore, the supports and both the side panels form together a force locked construction being firm against bending.
    Type: Grant
    Filed: June 23, 1981
    Date of Patent: November 15, 1983
    Assignee: Escher Wyss Limited
    Inventor: Heinz Guttinger
  • Patent number: 4406139
    Abstract: There is disclosed a dewatering roller assembly for Foulard fabrics or the like characterized in that the two rollers through which the fabric strip is passed are caused to bend or deform about mutually corresponding bending lines so that a uniform gap or a predictably variable gap between the rollers is achieved.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: September 27, 1983
    Assignee: H. Krantz GmbH & Co.
    Inventor: Theo Schiffers
  • Patent number: 4399747
    Abstract: The invention concerns a press roll having adjustable sag capability, principally for use in paper making machinery, or the like. The press roll includes a hollow, rotatable shell supported by a non-rotatable yoke and hydraulic support elements between the shell and the yoke transfer the press forces from the shell to the yoke. Each end region of the yoke is supported by a stationary support block. The connection between the yoke and the stationary support block is at a particular location. A mating roll cooperating with the press roll is supported by bearings longitudinally positioned approximately at the location of the connection between the support block and the yoke. An additional hydraulic supporting element is defined between the roll shell and the yoke and the longitudinal location of the yoke support piece and the mating roll bearing. The roll shell is supported on a stationary guide element with respect to which the roll shell rotates.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: August 23, 1983
    Assignee: J. M. Voith GmbH
    Inventors: Christian Schiel, Robert Wolf
  • Patent number: 4389932
    Abstract: A calender wherein the uppermost and lowermost rolls of the roll train have hollow cylindrical members with inserts which cooperate with corresponding shaft-like carriers to confine the cylindrical members to vertical movements relative to their carriers. The end portions of the carriers are mounted in bearings which are movable along vertical guides in the stand of the calender. The cylindrical members contain rows of hydraulic cylinder and piston units which urge the cylindrical members against the neighboring rolls of the roll train, and the inserts in one of the cylindrical members cooperate with the corresponding carrier to hold the respective cylindrical member against movement from a fixed end position which the cylindrical member assumes when the calender is in use.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: June 28, 1983
    Assignee: Kleinewefers GmbH
    Inventor: Josef Pav
  • Patent number: 4389933
    Abstract: A calender wherein the lowermost roll of the roll train has a hollow cylindrical member spacedly surrounding a shaft-like carrier whose end portions are mounted in bearings movable up and down along guide rails on the stand. The end portions of the cylindrical member contain inserts serving to confine the cylindrical member to vertical reciprocatory movements relative to the carrier. The cylindrical member further contains a battery of cylinder and piston units which maintain the cylindrical member in an upper end position relative to the carrier. Additional cylinder and piston units maintain the carrier in an upper end position relative to the stand by urging shoulders which are provided on the bearings against stationary stops on the stand.
    Type: Grant
    Filed: February 6, 1981
    Date of Patent: June 28, 1983
    Assignee: Kleinewefers GmbH
    Inventor: Josef Pav
  • Patent number: 4384514
    Abstract: This invention provides a method and an apparatus for use in controlling a nip through which material is passed. The apparatus comprises at least one means for generating a magnetic field and means for locating the magnetic field generating means at a selected position along the length of one of the pressing elements, adjacent to the element, to thereby affect only a portion of the length of the element, thus controlling only that portion of the length of the nip which is generally aligned with the affected portion of the pressing element.
    Type: Grant
    Filed: March 3, 1981
    Date of Patent: May 24, 1983
    Assignee: Consolidated-Bathurst Inc.
    Inventors: Rene Larive, Osman J. Walker
  • Patent number: 4356764
    Abstract: A pressure roller and apparatus for pressure fixing imaging powder in an electrostatic duplicating machine, the apparatus comprising a pair of fixing rollers in pressure contact along a narrow band to define a nip. The fixing rollers are hollow cylindrical rollers with parallel longitudinal axes and are rotatably supported by pressure transfer rollers inside each fixing roller. The pressure transfer rollers in each fixing roller are rotatably supported by a shaft and housing. Pressure supplied by loading means at the ends of the shafts to pressure fix imaging powder to a substrate transported through the nip is distributed uniformly along the nip by the pressure transfer rollers without causing bending moments on the fixing rollers.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: November 2, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Orville C. Haugen
  • Patent number: 4341157
    Abstract: A vibration-free cylinder for a printing press in phased rolling engagement with a companion cylinder and which is formed of a cylinder body of star-shaped cross section having a central axial portion and four axial webs extending radially outward therefrom to define between them recesses of sector-shaped cross section. The surface of the cylinder is formed by first and second arcuate shell segments, the first of which extends over substantially half of a revolution and the second over substantially one-quarter revolution, the segments having parallel edges bridging the tip portions of the webs for enclosing all but one of the recesses which is uncovered to produce a gap defining the leading edge of the cylinder surface. The web at the leading edge is extended outwardly to the locus of the cylinder surface so that the cylinder body absorbs the impact with the companion cylinder which occurs at the leading edge at each revolution.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: July 27, 1982
    Assignee: M.A.N.-Roland Druckmaschinen Aktiengesellschaft
    Inventor: Claus Simeth
  • Patent number: 4328744
    Abstract: A rotary pressure applying roll which defines with a parallel complementary roll a nip for a running web of paper, textile or other flexible sheet material in a calender or the like has a cylindrical shell surrounding a stationary carrier in the form of a rigid shaft. A bearing element is installed between the shell and the carrier and several hydraulic pressure generating devices are mounted between the carrier and the bearing element to urge the latter against the internal surface of the shell. The pressure generating devices are spaced apart from each other, as considered in the circumferential direction of the shell, and the cylinder chamber of each such device can receive pressurized hydraulic fluid at a different pressure. The axis of a main pressure generating device is normally located in the common plane of the axes of the shell and of the complementary roll.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: May 11, 1982
    Assignee: Kleinewefers GmbH
    Inventors: Josef Pav, Dieter Junk
  • Patent number: 4327634
    Abstract: The object of the invention is an apparatus for the preliminary or final assembly of sheets of glass and/or plastic material for forming laminated glazings.The apparatus according to the invention comprises a lower pinching means following a curvature transversal to the bottom side of the rigid support of the glazing, a flexible, cylindrical pressure roller placed above the lower pinching means, means bearing on the pressure roller to give it the desired curvature, and means providing a rotational drive of the pressure roller and/or the lower pinching means.The invention is applicable to the manufacture of laminated glazings, particularly for automobile glazings or flat glass used in construction.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: May 4, 1982
    Assignee: Saint-Gobain Vitrage
    Inventors: Daniel Colmon, Francis Triffaux
  • Patent number: 4319389
    Abstract: A controlled deflection roll comprising a stationary roll support and a roll shell rotatable about the roll support. The roll shell is guided in radial direction upon the roll support in order to perform displacement movements, typically lift movements. The controlled deflection roll is equipped with a shutoff element, a slide or a valve, which upon exceeding a given displacement magnitude of the roll shell causes outflow of pressurized fluid medium from a pressure line, and thus, prevents the development of the full pressing or contact force which otherwise could lead to destruction or damage of the roll shell. In an overflow line, branching-off of the pressure line, there can be arranged a residual pressure regulator equipped with valve means or throttle means for preventing drop of the pressure in the pressure line below a desired value.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: March 16, 1982
    Assignee: Escher Wyss Limited
    Inventor: Ignazio Marchioro
  • Patent number: 4319522
    Abstract: A rolling mill contains a controlled deflection roll possessing a roll shell movable, in the pressure or contact plane, radially in relation to a roll support or beam for rotatably mounting the roll shell. The ends of the roll shell are guided in appropriate guide means. The roll shell, in the pressing or contact position of the controlled deflection roll, bears against fixed stops or impact members, so that there is formed a fixed roll. A regulation device serves for determining the magnitude of the impact forces. As the impact or stop member there can be preferably used the ends of the guide means or guides of the roll shell. The impact force is formed by pressure or support elements of the controlled deflection roll or by pistons mounted at the region of the guide means. There also can be provided an external contact or pressing device.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: March 16, 1982
    Assignee: Escher Wyss Limited
    Inventors: Ignazio Marchioro, Wolf-Gunter Stotz
  • Patent number: 4299162
    Abstract: A controlled deflection roll system includes a rotative cylindrical shell having an outside adapted to form a nip with a counter roll, a non-rotative shaft extending axially through and radially spaced from the shell's inside and having projecting ends to which force is applied to press the shell against the counter roll. Inside the shell pressure elements press the shell in the same direction, the counter roll providing a reaction, and because the shell does not have its ends journaled on the shaft, the shaft can float inside the shell in dependence on the forces involved. Automatic devices automatically responsive to any radial displacement of the shaft relative to the shell control the force applied to the shaft's ends so as to keep the shaft centered at its ends within the shell, permitting the application of a rotary drive to the shell.
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: November 10, 1981
    Assignee: Eduard Kusters
    Inventors: Werner Hartmann, Karl-Heinz Kusters
  • Patent number: 4290353
    Abstract: A roll which can be used in a calender to bear upon a web of textile material, paper or the like while the web travels between the peripheral surface of a floating shell of the roll and a counterroll. The shell surrounds a non-rotatable shaft which carries several rows of discrete electromagnets extending in parallelism with the axis of the shaft and along an arc of at least 200 degrees, as considered in the circumferential direction of the shaft. The electromagnets can be energized to a different extent so as to subject the magnetizable material of the shell to forces of different magnitude and to thus counteract the tendency of the shell to undergo deformation in response to the action of forces which act radially of the shell or which tend to impart to the shell vibratory movements. Additional electromagnets can be provided to cooperate with a radially inwardly extending flange at one end of the shell to hold the latter against excessive movements from an optimum axial position.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: September 22, 1981
    Assignee: Kleinewefers GmbH
    Inventors: Josef Pav, Josef Pav