. Locomotive engineering : a practical journal of railway motive power and rolling stock . ular vari-able exhaust in smokebox, so that the en-gine in the heaviest service is practicallynoiseless. As stated, the engine is- of the two-cylinder compound type, the high-pres- ferential seams are double-riveted. Theworking pressure of the boiler is l8opounds per square inch. The extreme valve travel is Sj^ inches;low-pressure steam port is 20 x ij4; highpressure, i8xij4. Richardson balancedvalves are employed, and United Statesmetallic packing for rods: The driving-wheel centers are steeled cast iro
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