Annual report of the Commissioner of Patents (1837)
United States. Patent Office · [Washington, D.C.] : Patent Office · leaf 1156
c. No. 140. For grinding paints and liquid substances. 1147 The mill should run to the right, and make from one hundred and fiftyto two hundred revolutions per minute. The belt passes from the back ofthe mill, running over the front part of the pulley, leaving the front of themill clear : the… … Bogarduss eccentrc mill, for grinding liquid substances. ? 1148 Doc. No. 140. may be used for that purpose, or the under plate may be taken out, (this Isdone in a moment by lowering the screw,) and the reservoir filled with oil.Holes are made in the screw for the purpose of putting in a wrench,…
United States. Patent Office · Patents · Agriculture
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