File:American engineer and railroad journal (1893) (14735759126).jpg

Identifier: americanengineer67newy (find matches)
Title: American engineer and railroad journal
Year: 1893 (1890s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York : M.N. Forney
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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tly tight andfully equal to a copper fire-l>ox ; others are only moderately so.These latter have not been built with snflicient care. It isimporlant to establish this point in order that these defects maynot be attiibuted to ihe use of steel. The slightest defect iiiconstniclion should be avoided with Ihe utmostcare. It may be slated as the essential results of Ihe investigationswhich have been made thus far, that no firebox plate afterthe short service to which it has been sub jecled h.is sprungin the .slightest, and that the steel taken froni different worksfjr locomotive fire-boxes has given essentially the .same results.What the life of tiicse sleel fire-boxes will be, and whelherthey will compare favorably wilh copjier fire boxes, time alonecan tell. Therefore for Ihe next year it is desirable that Iheboilers which have been built sh(iuld be carefully comparedin their performances with those having copper fire-boxes, inorder to gather further experience as rapidly aS possible.
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iJi-i■ b:o a? s BiO pa zo >, 09t)OP < z2 a Q o; Ed o eq Id Vol. LXVII, No. lo) AND RAILROAD JOURNAL. 487 It is more than probable, however, that the steel tube sheetswill prove themselves superior to tliose of copper. Tliey donot stretch so reudily, and the tubes can be made far tighter.The copper tube sheets up to this lime have shown man) indi-cations of a very short life, and lately several have been re-moved on account of the defects in the upper flanging and thetearing out of the upper stay-bolts, in consequence of consid-eral)le stretching, so that they had to be replaced after two orthree years ; and one is almost tempted to revert to the oldmethod of the use of crown bars, which is slill extensiveljused in Englanil, or to cousider some other method of stayingwhich acts equally well. On the other hanil. the steel fire-boxes at the bottom of theside sheets and liencath the grates have developed a markedtendency to rust, which can only be explai

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