. The science of railways . jFtq. 102. CLASSES OF COMPOUND LOCOMOTIVES. 173. JPiaJOJ. The arrangement of cylinders is quite varied,as shown b}^ the several skeleton cuts. Theremay be two cylinders, one high-pressure and one low-pressure, as outlined inFigs. 101, 102 and 108; onehigh and two low-pressure,as in Figs. 104 and 105; twohigh-pressure and one lowinto which they both ex-haust, as in Fig. 106; twohigh, each exhausting in-dependently into a low-pressure cylinder on thesame side of the engine,shown in Figs. 107,108, 109and 110; or two high ex-hausting into a common receiver from whichbot
. The science of railways . jFtq. 102. CLASSES OF COMPOUND LOCOMOTIVES. 173. JPiaJOJ. The arrangement of cylinders is quite varied,as shown b}^ the several skeleton cuts. Theremay be two cylinders, one high-pressure and one low-pressure, as outlined inFigs. 101, 102 and 108; onehigh and two low-pressure,as in Figs. 104 and 105; twohigh-pressure and one lowinto which they both ex-haust, as in Fig. 106; twohigh, each exhausting in-dependently into a low-pressure cylinder on thesame side of the engine,shown in Figs. 107,108, 109and 110; or two high ex-hausting into a common receiver from whichboth low-pressure cylinders draw their supply, asin Figs. Ill and 112. Aside from the varied ar-rangement of cylinders,many of the Europeandesigns employ threeand four cranks and useno side rods. SomeFrench constructions,retaining the use of siderods, employ for thehigh-pressure cylinderstwo inside cranks onone driving axle at anangle with the low-pressure cranks on asecond driving axle, the angle between the cranks
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