. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . tain-ing a speed of 65 miles an hour. Theyare being placed in service on the newCascade electrification of the road knownas the Othello-Seattle-Tacoma electriczone. November, 1919 RAILWAY AND LOCOMOTIVE ENGINEERING 333 Details of Parts of the Pacific Type Locomotive as ShownIn Our New Chart, No. 12 I. Crosshead, Guides, Piston and of parts which we are describing are guide and the one illustrated herewith. Piston stated in an announcement in regardto our new chart of a Pacific Locomot
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . tain-ing a speed of 65 miles an hour. Theyare being placed in service on the newCascade electrification of the road knownas the Othello-Seattle-Tacoma electriczone. November, 1919 RAILWAY AND LOCOMOTIVE ENGINEERING 333 Details of Parts of the Pacific Type Locomotive as ShownIn Our New Chart, No. 12 I. Crosshead, Guides, Piston and of parts which we are describing are guide and the one illustrated herewith. Piston stated in an announcement in regardto our new chart of a Pacific Locomotive,we begin the series of articles with a de-tailed description of the main reciprocat- mainly those of the Class K 4 S of thePennsylvania railroad, and many of theessential details of that type of enginehave been used in the chart without anychange whatever. Among these are the The elevation of the guide yoke and crosssection of the guides shows how this isaccomplished. There are three guides inall, one at the top and two at the bottom,he upper guide has a full bearing sur- Bl/C/rL£ PLAT£ re£. GUIDES, GUIDE YOKE AND CROSS SECTION OF THE GUIDES. iiig parts of the locomotive, the partsfrom which the locomotive receives itsmotion. As is well known, there are avariety of forms in which these parts arein service, and necessarily so, because therequirements of the service of the differ-ent types of locomotives are variable,from the lightest type of narrow gaugelocomotive, and lighter types of switchers,to the heavier types of Mallets and otherhigh-powered locomotives. It will be ob-served in the accompanying descriptionthat there is a degree of lightness in theparts which is largely the resuU of amarked improvement in the quality ofsteel and other metals. This is the resultof long and successful experiments, andfrom recent developments it may be safelysaid that the end is not yet. In selecting the Pacific type of locomo-tive, it may be safely stated that it pre-sents in a marked
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