| 摘要 |
An improvement is described in strip stock feeders of the type in which a coiled metal strip is uncoiled and advanced by pressure rollers. The invention concerns a hydraulic drive system for the rollers in which a hydraulic motor is powered by a hydraulic pump via a conduit system. This system includes two parallel flow paths which permit different amounts of fluid to pass through the motor, thereby operating the motor at different speeds. Controllable valves determined which paths the fluid follows or stop all fluid flow through the system thereby stopping the motor.
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