Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 641
that the moving point will describe a circular arc, ofwhich the line joining E F is the radius. This moving radius E F willsweep over a sector, of which the arc is the base, and the radii in theinitial and final positions the lateral boundaries. In the mean time theroller D will turn by friction on…
Machinery · Scientific apparatus and instruments
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