| 摘要 |
In a device for acting on webs of material which includes at least one roll, which comprises a revolving hollow cylinder constituting the working roll circumference, a crosshead going through the cylinder with spacing on all sides, and against which the hollow cylinder is braced by means of a fluid pressure medium contained in its interior between the crosshead and the inside of the hollow cylinder in at least one chamber, force members which operate in the action plane of the roll and engage the ends of the crosshead protruding from the hollow cylinder, or corresponding points of a counter roll, and a control for holding the forces exerted by the fluid pressure medium on the one hand and by the force members on the other hand substantially in equilibrium, force measuring cells are inserted between the force members and the ends of the crosshead or the corresponding points of a counter roll, respectively, which cells substantially transmit the entire exerted force, and means provided for feeding the signal of said cells to the control, so as to result in more accurate control.
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