Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 56
146. TRACTION RECORD-ING DYNAMOMETER.—The _^^ draft-pull compresses -qjr^ the elliptic-shapedsprings, moving theindex hand D, whichcarries a pencil at its opposite end K. A paper ribbon is drawnunder the pencil and wound on a drum, driven by clockwork, mak-ing a continual record, to be measured by… … 147. FRICTION MACHINE, for testingfs the friction of wheels at various speeds andloads. The adjustable circular balance holdsthe wheels or vehicle in place. The poundstension 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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