| 摘要 |
In a web feed section comprising a bottom feed roll, a top feed roll, and actuator means for adjusting the contact pressure between said rolls, the improvement wherein the actuator means includes a compression spring operatively connected with the top roll through a lever to transmit its force to the top roll, a disk cam for adjusting the initial stress in the spring, and levers for uncoupling the spring from the top roll when a roll is to be replaced.
|
