Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 94
s. This valve isshown at U, Fig. 6, and on a larger scale by Figs. 32 THROTTLE AND DRY PIPE 87 and 33, which give a sectional view aiid a plan of thethrottle pipe, valve, and throttle lever. The valve V, Fig. 32, is a double poppet valve, hav-ing two circular disks D and E, which cover two… … Figure 33 ciameter, the top one being slightly larger. The steampressure in the boiler acts upon the top of disk D andupon the bottom of disk E. If the two disks wereexactly the same in diameter the valve would be bal-anced, but this is not desirable, as there might thujs bea possibility of its…
Locomotives
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