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 (1829)
Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 429
he ends of smallpoints, called guides, which are opposite theneedles ; and these guides are fixed on two bars,each of which lias half the guides fastened in it,that is, one guide is fast in one bar, and the nextin the other, and so on alternately of the whole.Each of the guides presents a tliread… … L A C E R T A. 403 frame. The next time, the alteniate guides areshifted emlvvays, so as to apply tlicmselves toother needles than those they were opposite be-fore. This crosses the thread, so as to makea net: but the quantity which is shifted endwaysis altered every time, by means of the…
Encyclopedias and dictionaries · Aeronautics
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