Kirkman, Marshall Monroe, 1842-1921 · New York, Chicago, The World Railway Publishing Company · leaf 459
441 LOCOMOTIVE APPLIANCES. bar has strong, heavy teeth operated by a pinion, which in turn is operated by a wheel mounted on the same shaft with it. The wheel is operated by a lever and pinion. This mechanism gives the advantage of a fine-toothed bar for power without the weakness of fine teeth, as… … Fig. 5. draulic jacks, each differing from Joyce Geared Loco- the others in no essential feature; motive Jack. hence it will suffice to illustrate but one or two designs. The principle upon which the hydraulic jack works is that of a pump. The lowering is done by a move- ment of the handle…
Railroads · Transportation
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