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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 28

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 28
a aXb_ W X ^ b ~~Y = w P X ^ X (^^ + ^0 _ bXbWxbXb a X {a + b ) The differential weight of lever arms must be adjusted to theproper factor for accurate computation. THE MECHANICAL POWERS. 21 … 19. Revolving Lever, first order. W= P X gb V = W Xba p 20. Revolving Lever, second order. W= P X {a^b) bP =^ xba-\-b 21. Revolving Lever, third order. W^P X b a-\-b P = W X (^ + ^)

Mechanical movements

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