Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 34
37. Four and three sheave blocks, with end of ropefixed to top block. Four sheave block fixed, threesheave block movable. P = W W = P X 6. ,. 1 38. Roving of a three and two sheave pair of (^T\ blocks, with a draw block fixed above. P = W ^. W = P X 6.o THE RIECHANICAL POWERS. 25 … 39. Roving of a two and three sheave pair oiblocks, with end of rope fixed to lower block. P = W W = P X c 40. CHINESE WINDLASS.—The sheave and hook rises equal to one-half the difference in the circumference of the barrels for each 1=> turn of the crank. See No. 27 for the power. 41. CHINESE…
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-218-128.webp)
