Boilers and Furnaces Considered in Their Relations Steam Engineering (Classic Reprint)

High-P ressure Steam Boilers (1880), and which is now out of print. Many requests have come to me from time to time to revise that book and bring it up to date. But twenty years is a long interval. Boiler pressures were much lower then than now. Wrought iron was the material then employed in boiler construction, now it is rarely met with. The conditions having wholly changed, the problem of revision is impracticable. The first book must be set aside as a thing of the past and the subject taken up anew, with special reference to the exacting conditions which obtain at this time in both design and performance. This book differs somewhat from the former one in being essentially one of constructive detail, in the preparation of which I have endeavored to present, by means of well-chosen illustrations, the latest and best practice in steam-boiler design. Mild steel as a material for steam boilers has practically displaced wrought iron. In its physical qualities it leaves scarcely anything to be desired. Tensile tests of mild steel plates, possessing those chemical properties which have given the best physical results, are allotted a considerable space in this book. They are made to cover as wide a range as seems necessary for ordinary stationary boiler work, or sufficiently so for the preparation of any specifications requiring plates not less than one-fourth inch, and not more than three-fourths inch thick. Riveted joints have always been of first importance in boiler construction. The numerous records of tests of purely experimental joints, or those not used in boiler-making, as well as those made to the actual working dimensions usually employed when riveting together plates of the various thicknesses, given inC hapter III., are mainly upon specimens prepared by direction of theB ureau of Steam Engineering of theN avy Department. These experimental tests were
(Typographical errors above are due to OCR software and don't occur in the book.)