Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 179
ral forms of the cutting parts of drills, we will proceed to explainthe modes in which they are put in action by hand-power, beginning with those for the smallest diame-ters, and proceeding gradually to the largest. Methods of Working Brills by Hand-power.—The smallest holes are those required in… … up in the form shown at large in Fig. 522 ; —^ lastly, it is hardened in the candle. The re ,srse end of the instrument is made into ^ a conical point, and is also hardened; near this end is attached a little brass sheave for the line of the drill-bow, which, in watchmaking, is sometimes a fine…
Mechanical engineering
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