Roll for the pressure treatment of cloth webs

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.