Jackscrew
- Noun
A jack in which a screw is used for lifting, or exerting pressure. See Illust. of 2d Jack, n., 5.
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Jackscrew
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Raising of Chicago
Chicago. Streets, sidewalks, and buildings were physically raised on jackscrews. The work was funded by private property owners and public funds.
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Square thread form
such as leadscrews and jackscrews. It gets its name from the square cross-section of the thread. It is the lowest
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Rhodes 27
, with provision for up to two additional pipe berths in the main cabin.
* Rhodes 27 number 10, Jackstraw. Cruising off the Maine coast in 1975.