Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 142
nerates MECHANISMS 13d a true straight line. Any set of links whateverwhich makes the product, PjAxPil^ a constant,where Pj is a fixed center, will enable D to traceout a straight line, provided A traces out a circlewhich passes through P^. A second combinationof links satisfying this condition is… … Fig. 214. crossed parallelogram. It is clear that in allpositions of the linkage the lines LN and KM areparallel; and, moreover, the product LNxKM isconstant. The latter statement becomes clear ifNS be drawn parallel to KL, and NT perpendicu-lar to KM; hence, since NS=LK=NM, T is themiddle point of…
Mechanical drawing · Machine design
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