A Manual of Marine Engineering: Comprising the Designing, Construction, and Working of Marine Machinery - Couverture rigide
Présentation de l'éditeur
Manual of Marine Engineering was written and first published, there have been many and extensive changes in marine engineering practice, due in great measure, if not entirely, to the supply of mild steel at a low price so low, indeed, that now it is quite as cheap as common iron. In 1880, the triple compound engine was little more than a dream; in fact, there were then many people who believed in, and continued to use, the ordinary expansive engine. The highest boiler pressure used by advanced and enterprising engineers was 100 I bs. per square inch, and few of them had ventured even so far as that. Steel crank-shafts, and other heavy forgings made of steel, were looked upon as luxuries to be indulged in only by theB ritish andF oreign Governments, and wealthy corporations. At the present time ingot steel forgings are common enough, and not very much dearer than iron ones. Engines with three cranks were few and far between, and generally limited to very large compound engines, in which a single low-pressure cylinder would have been abnormally large. To-day, most of the ships recently built have engines with three cranks, and even tug boats and other small steamers are generally fitted with threecrank triple engines, while larger vessels not infrequently have four-crank triple and quadruple engines. In 1880, the torpedo boat, with its machinery, was looked upon as a toy, possibly useful enough in warfare, but not fit to stand the rough usage of everyday work; but the torpedo boat designer was really the pioneer to show the path that the marine engineer was to tread on his way to produce high-speed steamers of all kinds and of every size, from the huge cruiser to the small Channel passenger steamer.
(Typographical errors above are due to OCR software and don't occur in the book.)
About the Publisher
Forgotten Books is a publisher of historical writings, such as: Philosophy, Classics, Science, Religion,
Présentation de l'éditeur
A Manual of Marine Engineering - Comprising the Designing, Construction, and Working of Marine Machinery. Thirteenth Edition is an unchanged, high-quality reprint of the original edition of 1896. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.
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