Agricultural engineering; by Davidson Jay Brownlee
Author:Davidson, Jay Brownlee. [from old catalog]
Language: eng
Format: epub
Tags: Agricultural engineering
Publisher: St. Paul, Minn., Webb publishing co.
Published: 1913-03-25T05:00:00+00:00
AGRICULTURAL ENGINEERING
frame under which the load is driven; the lifting is done with either ropes or chains running over pulleys above and back to a windlass below. The overhead type is the simpler of the two, but is a little inconvenient to move. Ropes are cheaper than chains, but are less durable.
Nearly all of the various devices known for heavy lifting are used with fairly good success, such as the worm gear, the screw and nut, the hydraulic lift, the rack and pinion, and the windlass. The worm gear with windlass is one of the most
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