The masterpieces of the Centennial International Exhibition\ : illustrated (1876)
Centennial Exhibition (1876 : Philadelphia, Pa.), Shinn, Earl, 1838-1886, Smith, Walter, 1836-1886, Wilson, Joseph M · Philadelphia : Gebbie & Barrie · leaf 497
llow, admitting bolts of any desired length, and the dies revolve and open, allowing the bolt, which is held in the jaws of the carriage, to be withdrawn instantaneously without stopping and reversing. The dies are rigidly fixed in a solid unyielding metal ring, thus insuring perfect accuracy in… … Fig. 2. — Bolt-Cutting and Nut-Tapping Machine : Putnam Machine Co. temper, by simply grinding their cutting-faces on an ordinary grindstone. Right- or left-hand screws can be cut, and the diameter of the threads may be made larger or smaller by means of an adjusting index. The die-head allows…
Centennial Exhibition (1876 : Philadelphia, Pa.) · Centennial Exhibition · Art · Decorative arts · Machinery
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