File:The railroad and engineering journal (1887) (14574355289).jpg

Identifier: railroadengineer65newy (find matches)
Title: The railroad and engineering journal
Year: 1887 (1880s)
Authors:
Subjects: Railroad engineering Engineering Railroads
Publisher: New York : M.N. Forney
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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of a conicalform, and the one end B fits into a similarshaped hole in the piston-head. This end of therod is riveted, as shown at c, to hold the piston-head on the rod. Besides the riveting a taperedkey K passes through the boss D, and the rodso as to hold the piston head securely to therod. The other end, A, of the rod fits into thecross-head, as shown in figs. 203-205. A solid cast-iron ring, A R, with grooves ,j^in it, encircles the piston-head. Two othersmaller rings, F F, called packing-rings, areplaced in the grooves ^^. The outside diam-eter of these packing rings is made somewhatlarger than the inside of the cylinder, and theyare then each cut apart transversely, as shownat E, fig. 216. This permits them to be sprungtogether so as to enter the cylinder, and their elasticity thencauses them to expand and fit the cylinder. An inverted plan ♦ For a fuller cxplaDation of the action of a slide-valve the reader is referredto the Authors Catechism of the Locomotive, Second Edition.
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Vol. LXV, No. I.) ENGINEERING JOURNAL. 41 of the packing ring, where it is cut apart, is shown at J. Asmall pin « is aitached 10 the ring A and prevents the ring Ffrom turning. The solid ring R and the two packing rings are held in theirplaces by a plate L L. called a. follower-plate, which is bolted tothe front of the piston-head. ENGINE-FRAME. Figs. A, B, C, D and E represent a cast-iron engine-frame,which should be drawn by the student to a scale of 3 in. = I ft.Fig. A is a side view, B a plan, C a back-end view, D a front-end view, and E a transverse section on the line .-/ B of fig. A.In drawing fig. A the line representing the top and that repre-senting the bottom of the frame should be drawn first. Then lay increasing the fleet in the near future by an addition of foursteamers, two of which will, in all probability, be passengersteamers, elegantly equipped and so arranged that they can beused for freight traffic when the passenger season is over,carrying 3,500 tons of freight

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