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 237
middle spring (Plate 105).If this could not be done, as would be the case if asingle spring hanger were used, the back driver shouldbe run on a wedge and a block placed on the middledriving box. The back driver should then be runoff the wedge, the middle driver run on a wedge anda block placed on…
Locomotives
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