Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 192
epacking strips preventing the steam from entering PISTON VALVES AND BALANCED VALVES iS^ this space, and the small hole X, communicating withthe exhaust cavity in the valve, relieves space R fromany possible accumulation of pressure. The four packing strips consist of two longer ones,which are… … Figure 88 is placed which holds these strips in position againstthe balance plate when steam is shut off. In operation these different sections maintain a steam-tight contact, by a direct steam pressure, with thebalance plate and with the inner surfaces of thegrooves provided to receive them, the…
Locomotives
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