Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 348
1405. TELESCOPIC HYDRAULIC ELEVATOR.—The several piston cylinders take a proportional lift bytheir differential areas and balanced pressure areas in eachcompartment. ^ *^- . ^-. =^ 1406. TRAVELLER HOIST, show.ing the principles of the balanced coun-ter pull and the traverse tackle. MILL AND FACTORY…
Mechanical movements
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