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 171
erence in contraction andexpansion, but also for wear; yet the plug is not sorigid as to knock a cylinder head out before relievingthe water from the cylinder, and yet it is absolutelyadjusted to the diameter of the casing at all times, andis held there and allowed to get no larger during itswork… … PISTON VALVES AND BALANCED VALVES 171 Fig. yj further illustrates the construction of this valve, giving end and sectional views of the different parts. A common defect of snap ring piston valves is that the steam pressure gets under the rings, and (expands them against the casing with the full…
Locomotives
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