This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 Excerpt: ...in the staying Dr. E. Alban, following John Stevens, was probably the first to ennunciate the principle: "So construct the boiler that its explosion may not be dangerous." The High-Pressure Steam-Engine, 1847, p. 70. f Jour. Franklin Institute, Vil. 3; p. 415. X Ibid, p. 412. Reports on Steam Boiler?, H. R., 1832, p. ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 Excerpt: ...in the staying Dr. E. Alban, following John Stevens, was probably the first to ennunciate the principle: "So construct the boiler that its explosion may not be dangerous." The High-Pressure Steam-Engine, 1847, p. 70. f Jour. Franklin Institute, Vil. 3; p. 415. X Ibid, p. 412. Reports on Steam Boiler?, H. R., 1832, p. 188. of such boilers as require bracing; in the insertion of the heads of plain cylindrical boilers; in the attachment of drums and the arrangement of man-holes and handholes, and, less frequently, in the selection of the proper thickness and quality of iron for the shells and flues. Such defects as these are the most serious possible; they are not only serious in themselves, and at the start, but are of a kind which is commonly very certain to be exaggerated and rendered continually more dangerous with age. A thin shell grows constantly thinner, a weak stay or brace weaker, and an unstayed head more likely to yield every day; while a flue originally too thin is all the time overstrained, not simply by the steam-pressure, but also by the action of the relatively stronger parts around it. The most minute study of every detail, and the most careful calculation of the strength of every part, with an allowance of an ample factor of safety, are the essentials to safety in design. Faulty design in bracing is illustrated by an explosion which took place in New York City, January 15 th, 1881, by which, fortunately, however, no loss of life was caused. A dome-head, proportioned and braced as shown in the next figure, was blown out, and tore up a side-walk under which the boiler was set, doing no other damage. The case was reported on by Mr. Rose, substantially as follows: "The dome-crown, tearing around the edge, at A, also tore ac...
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