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Title: A hydraulic assist for a manual skyline lock
Author: Biller, Cleveland J.;
Source: Research Note NE-247. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 2p.
Publication Series: Research Note (RN)
Description: A hydraulic locking mechanism was designed to replace the manual skyline lock on a small standing skyline with gravity carriage. It improved the efficiency of the operation by reducing setup and takedown times and reduced the hazard to the crew.
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Biller, Cleveland J. 1977. A hydraulic assist for a manual skyline lock. Research Note NE-247. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 2p.
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