A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 370
ed stay-bolts. Forextremely high pressures, boilers composed only of tubeswere used. Dr. Ernst Alban described the boiler alreadyreferred to, and its construction and operation, and statedthat he had experimented with pressures as high as 1,000pounds to the square inch. The Harrison steam-boiler,… … Fio. 111.—Harrisons Sectional Boiler. and fitted together with faced joints. Long bolts, extend-ing from end to end of each row, bind the spheres together.(See Fig. 111.) An example of another modern type in extensive use isgiven in Fig. 112, a semi-sectional boiler, which consists ofa series of…
Steam-engines
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