Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 212
The geering shown above the top of the boring-bar is for hoisting up the boriDg-bar, when the ma-chine is to be used for planing a flat, or tiaming a cylindrical or conical surface. The machine, aaarranged for this purpose, is shown in Fig. 2552.
Mechanical engineering
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