Roll for pressure treating webs of material

Claim 1

In a roll for pressure treating webs of material comprising a stationary core which is surrounded by a rotatable hollow cylinder radially spaced from the core, said roll having between the core and the hollow cylinder, longitudinal seals and end seals which seal off a longitudinal chamber which extends between the core and the hollow cylinder on one side of the roll and is adapted to be filled with a pressure liquid, and discharge means provided in the core for discharging leakage liquid from the remaining space between the core and the hollow cylinder, which space remains between the core and the hollow cylinder on the other side of the roll, the improvement comprising: a strip, which extends longitudinally along the hollow cylinder for the length of said longitudinal chamber and is secured to the core, said strip having a free long edge cooperating with the inner circumferential surface of the hollow cylinder to collect therefrom said leakage liquid in said remaining space and carried by said surface during rotation of said hollow cylinder, said strip extending from the core toward the inner circumference of the hollow cylinder and being arranged in the vicinity of that one of said longitudinal seals toward which when rotating the hollow cylinder runs, said discharge means being positioned to discharge leakage liquid collected by said strip.