Sandhurst, Phillip T, Mueller, A. M. J · Philadelphia ; and Chicago : P.W. Ziegler · leaf 454
THE GREAT EXHIBITION, 1876 . 418 on which they revolve, and the pressure is resisted by anti-friction bowls, which also act as drivers, thus dispensing with guides … COAL CUTTING MACHINE, FIGS. 2 AND 3. By F. Hurd Gr Co. and slides. The cutters are put in or taken out of cut by a swivel-nut and screw acting on the lever or radial arm in which they revolve, or by a pinion and quadrant. They are made of
Centennial Exhibition (1876 : Philadelphia, Pa.) · Decorative arts · Arts · Machinery · Arts, Modern
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