Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 60
147. FRICTION MACHINE, for testing^ the friction of wheels at various speeds andloads. The adjustable circular balance holdsthe wheels or vehicle in place. The pounds- tension on the scale multiplied by the periph-eral velocity in feet per minute gives the foot-pound draft or friction. so…
Mechanical movements
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