Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 437
Fig. 2950 and 295 1 show two pair of rollers for forming the astragal, to which the upper and lowerplates of the chimney of a locomotive arc riveted; the rollers B1 B2 are used in the order the draw-ings an Fig. a pair of rollers for forming the base mould, and Fig. 29-19 for forming the body of…
Mechanical engineering
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