Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 701
way through from the one side whilst the work lies upon the anvil, so that when turnedover, the cooling effect of the punch may serve to show the place where the tool must be again ap-plied for the completion of the hole ; the little bit or burr is then driven out, either through the squarehole in… … Fig. 17S8 shows the ordinary mode of making the square nuts for bolts. A flat bar is first nicked onthe sides with the chisel, then punched, and the rough nuts, if small, are separated and strung upon theend of the poker, (a slight round rod bent up at the end,) for the convenience of managing them…
Mechanical engineering · Mechanics · Engineering
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