Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 670
Fig. 275. First Graduating Position. Graduating Positions. (Figs 275 and 276.) Thesepositions give a gradtial reduction of brake pipe pres-sure for service applications. In Fig. 275 ports M are … Fig. 276. Last Graduating Position. blanked and communication from the main reservoir tothe brake pipe is cut off. The straight air ports E andV are also blanked, as well as ports O and W, which arecut off just before the handle reaches the First Gradual- 642 LOCOMOTIA^E ENGINEERING ing Notch.…
Locomotives
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