Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 751
Fig. 5.—Sprague motor. … RAILROAD, ELECTRIC. 723 into gears bolted to the axle. The pinions on the armature shaft are, by a very simple andingenious construction, set so that the one is half a tooth in advance of the other. Forhigh speed and heavy work this method is very efficient. In a later type of motors (Fig. 7) the…
Mechanical engineering
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