Methods of machine shop work : for apprentices and students in technical and trade schools (1914)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York : McGraw-Hill · leaf 197
endwise motion andhave tools fixed to them, the work traveUng lengthwise of thebar; (c) those in which both work and bar are fixed as regardsendwise motion, the tool being mounted in a traveling headwhich is fed lengthwise of the bar by means of a screw. An application of a bar of the… … Fig. 166.—Boring bar for lai)cr holes. bearings, one of which is bolted to one end of the casting andthe others to cross beams as clearly shown, the drive beingthrough a worm gear and an electric motor belted to the wormshaft. Such bars and their attachments naturally take a greatvariety of forms…
Machine-shop practice
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