Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives (1916)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co., pub. for Sears, Roebuck & co. · leaf 702
Fig. 284. Fig. 285. Each regulating head has a vent port C, and to avoidany unnecessary waste of air, one of these heads shouldbe plugged with screw PG 33. The cut-out cock shownin Fig. 285 is used with the B2S equipment, between theregulating and supply portions. When this cock is closedthe supply…
Locomotives
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