Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 61
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… … 148. TORSION DYNAMOMETER.—To a driving shaft E is attachedat C a helical spring. To the otherend of the spring is attached a trans-mission pulley A and a small pulleyQi, moving freely on the shaft E. AtQ2 another small pulley is fixed to shaft E. The tension of trans-mission displaces the relative…
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-472-294.webp)