Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 10
edicates it to his fellowcraftsmen, the engineers of America. Calvin F. Swingle. L. The Boiler Stationary boilers may be divided into four differentclasses. The first and most simple type, and the one fromwhich the others have gradually evolved, is the plain cylin-der boiler in which the heated… … Fig. 1 RETURN TUBULAR BOILER—SHOWING SETTING Next comes the flue cylindrical boiler, which is somewhatlarger in diameter than the former, generally 40 in. diam-eter and 20 to 30 ft. long, with two large flues 12 to 14 in.diameter extending through it. The return tubular boiler, Steam Engineering
