The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop .. (1896)
Genung, Edward. [from old catalog] · New York [Press of J. B. Savage, Cleveland] · leaf 211
istance A B; or thus: 60x80=4800; now, as the power isnot known we divide 4800 by the distance A B, or 30, thus:4800-^30=160 pounds, or the power at B to just balance aweight of 60 pounds at C. In this example, as the power isgreater than the weight, the pressure at the fulcrum is up-wards, and is… … the fulcrum of the lever, B the valve, 3 from the fulcrum,and D a weight of 40 pounds suspended 25 from the valveor 28 from the fulcrum; the valve is 3 diameter. Required,the steam pressure on the valve to just balance the weight.(The weight of valve and lever is not taken into considera-tion). The…
Machinery
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