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 724
with edges constantly kept sharp. The time required to sharpen a worn-out 14-inch bastardfile is about four minutes, or proportionately less if sharpened before being worn entirely out. Smoothfiles require much less time. About 4 horse-power of 60-lb. steam used during four minutes, andone pint per…
Mechanical engineering -- Dictionaries
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