Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 386
ht between it and the lathe of the loom. is the device whereby the yarn is allowed to unwindfrom the warp-beam at such a rate as shallbe required by the weaving process. Thisrate depends upon the rate of the picks, thesizes of the warp- and weft-threads, andthe compactness with which the material… … 2956. the rate of surface motion of the warp-beam depend upon the tension of the yarn ; and the rate ofrevolution of the beam to secure equal speed of let-off will become rapid as the bulk of yarn dimin-ishes upon the roller. Let-offs may be either positive orfrictional. In the first case they…
Mechanical engineering -- Dictionaries
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