# US 5,702,045 A · Roll for the pressure treatment of cloth webs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,702,045 A - Document ID: US5702045A - Status: Granted - Kind: A - Application number: 08/505,873 - Filed: 1995-07-24 - Granted: 1997-12-30 - Earliest claimed: 1994-11-08 - Assignees: Ramisch Kleinewefers GmbH - Inventors: Wolfgang Tschirner - Web page: https://patentgrep.com/patent/US5702045A ## CPC - F16C 13/028: {with a plurality of supports along the length of the roll mantle, e.g. hydraulic jacks} - D21G 1/022: {the means using fluid pressure} - F16C 13/02: Bearings - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - D21G: CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES (winders or rewinders for finished products, means for adjustment of wrinkles or lateral extensions B65H) ## Abstract A roll for the pressure treatment of cloth webs comprising: a stationary beam, a shell mounted for rotation relatively to the beam, support elements for equalizing roll shell deflection, and a biasing system so acting on the support elements that the same apply a radial force to the shell, is characterised in that a clamping formation consisting of a number of adjacent conical rings which extend in the direction of the roll beam and of a number of clamping rings which are disposed between the conical rings and which are adjacent the shell is provided, is mounted axially and can be acted on by an axial force which is so deflected in the clamping formation that the same applies a radial force to the shell. ## Claims ### Claim 1 A roll for the pressure treatment of cloth webs comprising: support means for supporting a shell; clamping means for rotatably securing said shell on said support means wherein said clamping means has a plurality of adjacent conically shaped rings which are rotatably mounted around said support means and at least one clamping ring interposed between said conically shaped rings and an inner surface of said shell; a force applying assembly for providing a compressive force parallel to a longitudinal axis of said support means and against at least said at least one clamping ring to urge said at least one said clamping ring into contact with said inner surface of said shell; and biasing means for providing a radial force along portions of said shell. ### Claim 2 (depends on 1) The roll assembly according to claims 1, wherein each clamping ring disposed in or near a center-plane of said shell extending perpendicularly to an axis of said shell is displaceable with less force than said clamping rings positioned at or near an outer edge of said shell. ### Claim 3 (depends on 2) The roll assembly according to claim 2, wherein each said clamping ring inward from said outer edge of said shell is displaceable with progressively less force. ### Claim 4 (depends on 1) The roll assembly according to claim 1, wherein each clamping ring is displaceable with a differing amount of force. ### Claim 5 (depends on 1) The roll assembly according to claim 1, wherein said clamping rings are displaceable with substantially equal amounts of force. ### Claim 6 (depends on 1) The roll assembly according to claim 1, wherein said clamping rings have different sliding characteristics. ### Claim 7 (depends on 1) The roll assembly according to claim 1, wherein said clamping rings have a first and a second inner surface and an outer surface. ### Claim 8 (depends on 7) The roll assembly according to claim 7, wherein said first and second inner surfaces have an angle of inclination with respect to said outer surface. ### Claim 9 (depends on 8) The roll assembly according to claim 8, wherein said angle of inclination of said clamping rings is between 10.degree. and 30.degree.. ### Claim 10 (depends on 8) The roll assembly according to claim 8, wherein said angle of inclination for each said clamping ring on or near a center-plane of said shell extending perpendicularly to the axis of said shell is less than said angle of inclination of said clamping rings positioned at or near an outer edge of said shell. ### Claim 11 (depends on 1) The roll assembly according to claim 1, wherein said at least one clamping ring comprises: a plurality of segments defining a substantially circular ring and spring means positioned about the perimeter of said circular ring for retaining said segments. ### Claim 12 (depends on 11) The roll assembly according to claim 11, wherein said spring means for said clamping rings located in or near a center-plane of said shell extending perpendicularly to the axis of said shell applies less force on said segments than said spring means on said clamping rings positioned at or near an outer edge of said shell. ### Claim 13 (depends on 11) The roll assembly according to claim 11, wherein said spring means for each clamping ring comprises substantially identical springs. ### Claim 14 (depends on 13) The roll assembly according to claim 13, wherein said spring means for said clamping rings located in or near a center-plane of said shell extending perpendicularly to the axis of said shell comprises fewer springs than said spring means on said clamping rings positioned at or near an outer edge of said shell. ### Claim 15 (depends on 1) The roll assembly according to claim 1, wherein said biasing means provides an axial force on at least a portion of said clamping means. ### Claim 16 (depends on 1) The roll assembly according to claim 1, wherein said force applying assembly comprises a piston guided in a cylinder. ### Claim 17 (depends on 16) The roll assembly according to claim 16, wherein said force applying assembly further comprises an axial cylinder roller bearing. ### Claim 18 (depends on 1) The roll assembly according to claim 1, wherein said clamping means form an outer bearing tube for mounting said shell. ### Claim 19 (depends on 1) The roll assembly according to claim 1, wherein said clamping rings are heat-insulating. ### Claim 20 (depends on 19) The roll assembly according to claim 19, wherein said clamping rings comprise a material selected from the group consisting of ceramic, plastic and compound insulants. ### Claim 21 (depends on 1) The roll assembly according to claim 1, wherein said shell has at least one channel extending parallel to its axis for conveying a heating or a cooling medium. ### Claim 22 (depends on 1) The roll assembly according to claim 1, further comprising insulating means for thermally insulating said shell from said support means wherein said insulating means is telescopic. ### Claim 23 (depends on 1) The roll assembly according to claim 1, wherein said assembly further comprises an oil circuit for lubrication and a thermal control system. ### Claim 24 (depends on 1) The roll assembly according to claim 1, wherein said biasing means comprises an oil circuit. ### Claim 25 A method for changing a shell of a roll comprising the steps of: providing a roll comprising: support means for supporting a shell; clamping means for rotatably securing said shell on said support means wherein said clamping means has a plurality of adjacent conically shaped rings which are rotatably mounted around said support means and at least one clamping ring interposed between said conically shaped rings and an inner surface of said shell; a force applying assembly for providing a compressive force parallel to a longitudinal axis of said support means and against at least said at least one clamping means to urge said at least one said clamping ring into contact with said inner surface of said shell; and biasing means for providing a radial force along portions of said shell; releasing said clamping means; removing said shell from said support means; drawing a second said shell onto said support means; and energizing said force applying assembly means to compress said clamping means directing at least one of said clamping rings to outwardly expand and engage said inner surface of said shell. ### Claim 26 (depends on 25) The method according to claim 25, further comprising the step of: equalizing heat-induced changes in said shell by causing said biasing means to provide an axial movement of at least one conical ring responsive to said heat-induced change.