Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 407
es is usually about y^ of the diameter of the boiler above its centre;tubes arranged in vertical rows, with distance between tubes ^ of their diam- 390 MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. eter. By keeping the average distance the same, but making them fartherapart at the top row, say -|-… … Fig. 918. The following table is from Barr, showing the greatest number of tubeswhich should be put in a given head, no tube to come nearer to the shell than2 for boilers of small diameter, 2^ for medium, and 3 for the larger series: Diameters of Number of Tubes (outside diameter). bodies inside,…
Mechanical drawing
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