A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 98
RN TYPE. 73 discarded beam. The wheel was supported on A-frames,resembling somewhat the gallows-frames still used withthe beam-engines of American river-boats. The sills carry-ing the two As supported the cylinder. The injection-cis-tern was supported above the great pulley-wheel. Thevalve-gearing… … Fio. 23.—Smeatons Portablfi-Engtae Boiler, 1765. placed the regulator, or throttle-valve*. The boiler (Fig.23) was- shaped like a large tea-kettle, and contained afire-box, B, or internal furnace, of which the sides weremade of cast-iron. The fire-door, C, was placed on oneside and opposite the…
Steam-engines
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