A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 242
througha distance equal to the circumference of the axle,%7zr (= 1i). But the ratio of the distances throughwhich the toothed wheels will turn is the inverse ratio oftheir number of teeth; that is, if the smaller wheel has20 and the larger 40 teeth, the former will revolve twice /40\ T (—), while… … Fig. 164. the final equation of Art. 210 applies. Severa* series ortrains of toothed wTheels are employed in derricks 224 STATICS. [213. and cranes for raising very large weights. One of these,with three pairs of toothed wheels, is represented inFig. 155. The relation of the power to the weight…
Mechanics
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