File:Railway and locomotive engineering - a practical journal of railway motive power and rolling stock (1908) (14760673072).jpg

Identifier: railwaylocomotiv21newy (find matches)
Title: Railway and locomotive engineering : a practical journal of railway motive power and rolling stock
Year: 1901 (1900s)
Authors:
Subjects: Railroads Locomotives
Publisher: New York : A. Sinclair Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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ge power of the engine, as is commonin England, and over there they thereforedo not use large ports, and open themonly about 34 of their width for inletof steam at full travel. In America,where it pays better to develop the great- tool making purposes. It contains 36per cent, of nickel and is noted for itscoefficient of expansion. Thisi.iakes it eminently suitable material forpendulum rods and for other purposeswhere it is important to maintain aneven length in extremes of tempera-ture. It might be suitable for metallicpacking, but would be expensive. Itwould be a valuable experiment to seeGuillaume steel tried for gland packingand steam users might be willing topay a high price if it proves efficient anddurable. ELECTRICITY FOR HOUSE-HEATING? (24) R. Wilson, Cleveland, O.,writes: During the cold of this winter I have ridden considerably onstreet cars that were heated by elec-tricity, and they were kept very com-fortable in spite of the doors having tobe opened frequently. To me elec-
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HEAVY CLASS M CONSOLIDATION ENGINES ON THE NORFOLK est possible haulage at the sacrifice ofsome fuel, it is common to use largerports, to insure free exhaust and the valveover-travels probably J4 to V% ins. at fulltravel, when admitting steam. Thus for-merly, an 18 in. cylinder would have portsprobably 16 ins. X il/s ins., while laterpractice would give 17 ins. X ij^ ins. ormore. In cross compound locomotives it iscommon to make the high pressure portsvery large to increase the cylinder clear-ance, and thus reduce the compression,and for the same reason the inside ofthe valve is given clearance. The low-pressure ports are made large to enablethe attenuated steam to get out, and thisvalve is also given clearance inside to pro-vide time for exit of steam. GUILLAUME NICKEL STEEL. (23) Holder, Jersey City, writes: Ihave heard extraordinary claims madefor Guillaume steel, but I never learnedwhat it is good for. Is it a new formof self hardening tool steel?—A. Wedo not think Guillaume ste

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