Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 365
ened to take up slack ofcord. It is evident that with any cord its ad-hesion, and consequently its driving power,is increased in the direct proportion of thenumber of grooves in each driving sheaveReferring generally to pulleys with angular grooves for round cords of any material, we quote from… … Beliinj Facts and Fiijures. 327 groove is preferred in order to increase the adhesion of tlwhich is thus pinched between the surfaces of the grooveby the primitive tension it receives similar to ordinarybelts. The angle which the two surfaces form with eacliother is made ordinarily 60° A very…
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