Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 71
Fig. 24erie city water tube boiler nace and proportionate increase of grate surface, whilethe length of the grate may be made such as to give thedesired ratio of grate to heating surface. 68 Steam Engineering The tubes are so spaced that any one of them may becut out, removed and replaced without… … any other. The entire boiler is suspended^ as the engrav-ings show, from the upper drum, giving perfect flexibility Erie City Water Tube Boiler 59 and freedom to adjust itself to varying conditions of tem-perature and stress. The sufficiency of the expanded tube
