. Ingegnere americano e giornale ferroviario. Una ferrovia del Pacifico. III. Negli articoli precedenti, alle pagine 126 e 161, è stata evidenziata l'applicazione verosimigliera delle parti di locomotiva standard recentlyadottate dalla Canadian Pacific Railway per l'impiego sui tre tipi di motori standard, vale a dire, Pacifico, a dieci ruote e consoli, e una descrizione generale, con dimenzioni, delle classi tipiche di ciascun tipo è stato dato. In adottato che è intercambiabile con le classi M4, D10 e D11 e differisce dai cilindri utilizzati sulle classi Gland G2 solo per l'altezza e il raggio della sella. Thisdesi
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. American engineer and railroad journal . an Pacific Railway. III. In the previous articles, on pages 126 and 161, the verybroad application of the standard locomotive parts recentlyadopted by the Canadian Pacific Railway for use on the threetypes of standard engines, viz., Pacific, ten-wheel and consoli-dation, was pointed out and a general description, with di-mensions, of the typical classes of each type was given. In adopted which is interchangeable with classes M4, D10 andDll and differs from the cylinders used on the classes Gland G2 only in the height and radius of the saddle. Thisdesign is shown in the illustration. Piston valves with inside admission are used and the steamis brought to the valve chamber through a direct passage.It is exhausted at the ends through passages with liberal areaand easy bends, which are separated from the live steampassage by a wide air chamber at all points. This feature isof special importance where superheated steam is used. Thevalve chamber is somewhat longer than the cylinder in order. STANDABD CTLINDEBS—CANADIAN PACIFIC RAILWAY. this and later articles will be shown a number of the moreinteresting details which are common to the standard en-gines as well as, in many cases, to a large number of locomo-tives not considered as standard. In considering these itshould be remembered, as was stated in the first article, thatit was advisable, as far as possible without affecting theirvalue for future work, to retain many old parts which hadbeen satisfactory and could with small change be made toserve on several different classes. Cylinders.—All of the standard engines have 21 by 28-in.simple cylinders with piston valves, and a design has been to allow an almost direct steam port, the extension at eitherend being taken up by the exhaust passage. The casting ismade for use with a %-in. cylinder bushing and has 1%-in.cylinder walls. The arrangement is for a double bar framespanning the cylinder, the top rail being fastened by fou
