Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 93
cal portion T, Fig.6, called the throttle pipe, and which is within the 86 LOCOMOTIVE ENGINEERING dome, is made of cast iron. At the top end of thispipe, near the top of the dome, the throttle U, Fig. 6,for controlling the steam, is usually located, althoughnot always, as it is sometimes placed in… … Figure 32 smaller in size. The principal objection to this typeof throttle valve for a locomotive was that the pressureof the steam upon it when closed made it very difficultto open the throttle gradually, or to regulate or adjustit while open—two very important points in the opera-tion of a…
Locomotives
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