Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 134
move the acorn check nut (K) above thespring bolt (F); then holding with a wrench the hex-agonal top (B) of the valve, with another wrench turnthe nut (<•/) downward to increase, and upward toreduce the pressure, until the valve opens at thedesired point as indicated by the steam gauge. Tomodify… … Fio. 6. Mcaxlv Muffled Locomotive Pop Safety Valve. 126 LOCOMOTIVE APPLIANCES. inserted into the small opening (A7) near the screwbolt, turn the ring (L) downward for diminishing, andupward for increasing the loss. CROSBY LOCOMOTIVE POP VALVES. Fig. 7 shows in section a Crosby plain popsafety…
Locomotives
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