Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 31
^ 15. Bell Crank or Angular Lever,second order. Same Notation as No. 12. 16. Bell Crank or Angular Lever,third order. WX 0+( a X cosine of angle ) = P on ^P 17. Compound Lever, first order J, ay^a W P X ^ X rt-Jyjy ^P h X b W XbX // — - P a X (I ~ … = W, w 18. Compound Lever, first and second orders. a axb_ W~T^ b ~-P P X ^ X (^+ //)_ bXb ~ WxbX baX {a + b) The differential weight of lever arms must be adjusted to theproper factor for accurate computation.
Mechanical movements
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