Appleton's dictionary of machines, mechanics, engine-work, and engineering . The geering shown above the top of the boring-bar is for hoisting up the boring-bar, when the ma-cnine is to be used for planing a flat, or turning a cylindrical or conical surface. The machine, aaarranged for this purpose, is shown in Fig. 2552. 2555,. 2557.

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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861