Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 340
umaticblow-off cock. Fig. 1 shows a sideand sectional view ofthis cock, which will be seen to consist of two checkvalves (A within the shell of the boiler and /> without),and a piston operated upon by air and released by aspring. Fig. 2 gives a view of the boiler head in thecab of a locomotive,… … Fig. 1. Mcintosh Pneumatic Blow-Off Cock. (Sectional View.) 332 LOCOMOTIVE APPLIANCES. piston, as it appears in the engraving, Fig. 1, it actsagainst the piston, which shoves both check valvesopen and holds them open against the pressure in the
Locomotives
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