Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 144
to move along this curved path, the point Awill describe a straight line. This method is adopted in the Taborindicator illustrated in Fig. 138. The pantograph has, as before,one link missing. It Vfill be noticed that this mechanism hasonly three links and four pin joints, in addition to the roller… … Fia. 139. accuracy with which the pencil traces out its straight line dependsupon the motion of the piston rod; in other words, the pencil is notconstrained to move in a straight line independently of the pistonrod. Under these conditions, the simplest mechanism to employ isthe pantograph, as in…
Machinery, Kinematics of
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