File:Forest and stream (1886) (14758903236).jpg

Identifier: ForeststreamXXVIA (find matches)
Title: Forest and stream
Year: 1873 (1870s)
Authors:
Subjects: Periodicals Hunting Fishing Outdoor life Sports
Publisher: New York, N.Y. : (Forest and Stream Publishing Co.)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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passes the condenser and is carried by the feed water into theboilers where with the ordinary scale it forms a deposit which issuch a poor conductor of heat that a thickness of one-sixteenth ofan inch will sometimes cause over-beating. Of course where over-heating of the plate cakes place, the higher the pressure of steamthe more likely is the plate to suffer partial collapse or bulging. Ifattention be given to this point, and care be taken to regulate thefeed and the deusitv of the water in the boiler, no difficulty may beanticipated. In she rt. &e we have already said, with proper care theboilers may be worked on the longest sea voyages without the slight-est trouble. ..... ». It is probable that within a measurable period of time the quadru-ple expansion engine will receive more attention than has yet beengiven to it. With quadruple expansion, steam of higher pressurethan that generally used for triple expansion is utilized in the manner March 18, 1886 ) FOREST AND STREAM, 166
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SAIL PLAN OF SMALL CRUISER MERMAID.1 we have described, and although the saving in the consumption offuel over tbe triple expansion type i3 not so great as tbe saving-ofthe triple expansion over the ordinary compound engine, still, assmall economies are becoming more and more important, the advan-tage will probably be sufficient to lead to the use of the quadrupleexpansion engine, at least in ships intended for long voyages, whereeconomy of fuel is especially of importance. During the past year as many as eighteen sets of triple exoansionengines have been manufactured on the Clyde alone, and manyothers have been turned out on the east coast. Tbe largest set yetfitted to a merchant ship is of 7,000 indicated horse power, and is onboard the North German Lloyds President Meyer. During last-year the old Cunard steamers Parthian and Batavia were refittedwith triple expansion engines, and this example is one which theinterests of shipowners should prompt them to follow when the ma-chinery o

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