Press roll with wedge clamp for the press jacket edges

A press roll for a wet press having a counter roll to form a press with a long nip for paper or board machines, said press roll comprising two end walls each having an inner surface and an outer surface, a tubular, flexible, liquid-impervious jacket secured at its edge portions by means of an attachment means to peripheral portions of the end walls;

• stationary support members for supporting the end walls, said end walls including bearing means for permitting rotation of the jacket and the end walls in relation to the stationary support members about an axis of rotation;
• and a press shoe forming with the counter roll a pressing zone having said long nip, said jacket upon rotation being moved through the pressing zone in sliding contact with the press shoe, said attachment means for securing an edge portion of the jacket to the end wall comprising a circular clamping member including a wedge body, and a circular groove that is spaced radially inwardly from an outer circumferential surface of said end wall or that is bordered by the outer circumferential surface of the end wall and by an outer ring which is secured to said end wall, said groove opening from the inner surface of said end wall to receive the edge portion of said jacket and wedge body, said groove and wedge body being provided with cooperating wedge-forming surfaces, and said clamping member including means for forcing said wedge body into the groove and retaining it therein in order to clamp said edge portion of the jacket within said groove by means of wedge action, against said end wall.