Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 705
orm are made with hollow half-round bits; but it is much better they should be angular, likethe ends of Fig. 1759, as then they serve equally well for round bars, or for square bars held upon theiropposite angles. Tongs that are made long, and swelled open behind, as in Fig. 1759, are veryexcellent… … Fig. 1761 represents tongs much used amongst the cutlers; they are called crook-bit tongs; theirjaws overhang the side, so as to allow the bar of iron or steel to pass down beside the rivet, and thenib at the end prevents the rod from being displaced by the jar of hammering. Fig. 1762. or the…
Mechanical engineering
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