| 摘要 |
A method and apparatus for controlling web tension in a sheet or web of paper stock being removed from a supply roll of paper stock. The method utilizes a relatively low range constant braking pressure on a rotatably mounted roll of paper stock. The method also includes compensating for variations in operating conditions while maintaining such constant uniform braking force on the paper stock roll. An apparatus which includes brake means having a rotor and caliper mounted brake pads engageable with the rotor and actuated by a compressed air-liquid system to maintain constant braking pressure.
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