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 37
o o o o o o <t o o o o b o o < i o o o o oo 009 O O O O o o o o <i 0000 00000 o 000 0000* 0000 FIG. 9. … supports extending from the crown-bars to the outsideshell of the boiler (Q, Fig. 8). The most objectionable feature to the use of crown-bars is the difficulty in keeping them clean, due to thefact that mud collects between the crown-sheet andbars, thus endangering the crown-sheet by overheat-ing.…
Locomotives
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