Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 135
r ones, shown a.t IT Gr E, Plate II, Fig. 9, and at IF 1,Fig. 8, are made of iron covered with leather, and are held againstthe lower set by means of weights, so that the pressure on the rovingand tension on the yarn is uniform, and may be adjusted for anypressure desired. The lower rolls, shown at… … Journal of the Franklin Institute, Vol. CI.
Science · Technology · Meteorology · Patents
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