Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules (1908)
National correspondence school of railroading, Chicago. [from old catalog] · [Chicago] · leaf 103
7 rS PLATE 20.WATER GLASS GAUGE-COCKS AND GLASS WATER-GLASS GAUGE. 93 clogged or stopped up, can sometimes be cleaned whilethe boiler is under steam. If the lower cock should be-come clogged, close the upper cock and open the blow-offcock, if one is attached. If not, remove the bottom nuton the…
Locomotives
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