Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 142
f invariable length.Suppose, then, that three points, Pj, A, D (Fig. 215), lying in one line parallel to either LN orKM are taken, so that, in all positions of the me-chanism, the points, Pj, A, D will be collinear.Then, clearly, PjA is a constant proportion of LNand PjD of KM; and consequently,… … Fig. 215. passes through Pj, the point D will trace out atrue straight line, perpendicular to the fixed link It will be noticed that Peaucelliers motion con-tains eight elements, whilst Harts contains onlysix. True straight lines may also be generated byusing higher pairs. Scott-Russell Parallel…
Mechanical drawing · Machine design
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