Identifier: londonencyclopae13curt (find matches)
Title: A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams
Year: 1829 (1820s)
Authors: Curtis, Thomas, fl. 1820
Subjects: Encyclopedias and dictionaries Aeronautics
Publisher: London : Thomas Tegg
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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j:on^on..rii/-/i^h.;/ /j- f/,.>/,/■! 7,/_</,7,(.rVf<rp,ffb /t< J S1iiu-v.sch\;V LINEN. 5 wheel, as it touches it at one part, and at the op-posite side of the ring projects nearly tliree-c;uar-ters of an inch. This ruig of wire gives motionto an upright lever, about fifteen inches long andmoving on a centre at three inches from its lowerextremity, where it has a pin fixed in it and rest-ing against the oblique ring of wjre ; therefore,when the wheel turns round, it communicatesa small motion to the lever in consequence of itsobliquity to tlie plane in which it revolves. Theupper end of the lever is connected to an hori-zontal sliding-bar situated beneath the spindle,and having an upright piece of brass, whichworks in the notch of apully formed in the endsof the bobbin, and drives the bobbin backwardsand forwards upon the spindle, according as theoblique ring of wire forces the pm at the lowerend of the lever in or out, when tlie wheel movesround. To reglondonencyclopae13curt

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