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 66
. The second process is rubbing with fine emery, made into a paste with water, in order to removefine scratches. The glass rests on a table, and upon a wet cloth to prevent its sliding. Anotherplate of glass is deposited above it, and the two surfaces are thus rubbed together by suitablemachinery.… … to the movable tables E, which reciprocate in a direction relatively perpendicular to that of thebrushes HH, which reciprocate above and rub upon the glass. The brushes are moved by thegeared mechanism shown. About 10 hours is required to polish about 50 superficial feet of glass. The method of…
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