Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 425
fastened with a set-eerew, can easily be shifted on the arm H, as may be found requisite. Therefore,when the wheels E E are kept in their present position by means of the lever J H, it is evident that aweight of 20 lbs. acting upon the pulleys A A at P, will balance another of the same weight at N,…
Mechanical engineering · Mechanics · Engineering
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