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“A combination of wheels and axles, as shown, is called a train. The wheel in a train to which motion is imparted from a wheel on another shaft by such means as a belt or gearing, is called the driven wheel or follower; the hweel that imparts the motion is called the driver.” —Hallock 1905


V. I. Hallock I.C.S. Refrence Library (Scranton: International Textbook Company, 1905) 7:26


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