File:Cassier's magazine (1911) (14760233971).jpg

Identifier: cassiersmagaz401911newy (find matches)
Title: Cassier's magazine
Year: 1891 (1890s)
Authors:
Subjects: Engineering
Publisher: New York Cassier Magazine Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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cted in two rings,the first being parallel, while the sec-ond is slightly tapered. Although locomotives of the 4-4-2type and with four compound cylin-ders have, to some extent, gone outof favour in American practice inconsequence of the employment oflarger engines, generally non-com-pound, there is still a good deal ofwork for engines of the Atlantictype for dealing with requirementsthat would now be reckoned as of amore ordinary or moderate character;and the locomotive illustrated in Fig.9 is a good example of the latestpractice for such requirements. Thedesign in question also comprises anumber of features of interest. The engine is a four-cylinder, bal-anced Vauclain compound, all cylin-ders driving the leading coupledwheels, and piston valves operated bythe Walschaert valve gear are em-ployed. The arrangement of the mo-tion is unusual, for it will be noticedthat, while the crosshead links arearranged in the ordinary manner, thecurved link is placed well back, and CASSIERS MAGAZINE
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FIG. 10. EXPRESS LOCOMOTIVE, PRUSSIAN STATE RAILWAYS. BERLIN ENGINEERING COMPANY is operated from the return crank bya rod extending backward instead offorward, as usual. The firebox is steel, stayed on theJacobs-Shupert system, and oil fuelis used. The smokebox contains aSanta Fe reheater. The steam pipefrom the dome is carried outside theboiler and divides to each high-press-ure cylinder. The exhaust fromthese cylinders passes to the reheaterand thence to the low-pressure cylin-ders. The 4-6-0 wheel type is still in verygeneral use, and in many quartersconstitutes the principal express classfor heavy traffic. On the GreatWestern Railway of England are, forexample, engines having four high-pressure cylinders, a Swindon super-heater, a taper or conical boiler, ahuge Belpaire firebox, and the highsteam pressure of 225 pounds persquare inch, and have to conductwhat are probably the most remark-able train services in the world. The

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