Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 125
out a truestraight line perpendicular to the fixed link P1P2. It will be noticed that Peaucelliers motion contains eisrht elements, whilst Harts con-tains only six. True straightlines may also be generatedby using higher pairs (§68). § 82. Scott-Russell Paral-lel Motion. — If, instead ofgenerating… … Fio. 115. slider crank chain shown in Fig. 115, there are two blocks connected by a link of invariable length—the blocks sliding in twoperpendicular slots—so that the mechanism consists of two turning GEOMETRICAL PROPERTIES. 5
Machinery, Kinematics of
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