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 234
between the back end of themiddle spring and the lower rail of the frame, the blockremoved from the top of the middle driving box, theback driver run off the wedge, the middle driver run ona wedge, and the block removed from the top of the backdriving box (Plate 102). After running down the mid-dle… … PLATE 102. frame, the middle driver run off the wedge and theback driver run on a wedge, which relieves the weightfrom the spring rigging. The back end of the backequalizer should then be chained up or a block placedin the safety hanger 2, or blocking placed betweenthe back end of the middle spring…
Locomotives
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