Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 182
diarr etrical face, or it would soon cease todeserve its appellation of half-round bit: some indeed give it about one-thirtieth more of the circum-ference. It is generally made very slightly smaller behind, to lessen the friction; and the angle, notintended to cut, is a little blunted half-way… … The rose-bit, Fig. 560, is also very much used for light finishing cuts, in brass, iron, and steel; theextremity is cylindrical or in the smallest degree less behind, and the end is cut into teeth like acountersink; the rose-bit, when it has plenty of oil, and but very little to remove, will be…
Mechanical engineering · Mechanics · Engineering
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