Lukin, James. [from old catalog] · New York, G. P. Putnam's sons · leaf 101
his escape wheel, with apinion of eight leaves, therefore, we found must turn awheel of sixty teeth, which, with its pinion of eight leaves,must gear into one of sixty-four teeth to carry the minutehand. Then comes the barrel, with its string and weight.The spur wheel not being fixed to the axle,… … Fig. 7.—Clock Train. which turns but once in twelve hours. To enable ouryoung readers more fully to understand the nature of OUR WOODEN CLOCK. 91 this train of clockwork, a sketch is appended here, theteeth being omitted. Teeth, moreover, would be unneces-sary if the sizes of the several wheels and…
Handicraft · Steam-engines
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