Dunkerley, Stanley, 1870- · London, New York [etc.] Longmans, Green · leaf 137
nt C traces out a curve exactly similar tothat traced out by A, whatever the shape of that curve may be.This follows from the fact that the ratio of the radii from the fixedpoint 0 to the loci of C and A is always constant and -equal to OC ,, , . , , DC jyj, that is to say, to =r=. In Pig. 128, if… … Fio. 129.. Fio. 130. The pantograph mechanism is employed to determine thesection of steel rails, tyres, and similar bodies, and in engravingmachines, beam engines, indicators, etc. A few applications willbe noticed in detail. § 89. Determination of the Section of Rails, etc.—A…
Machinery, Kinematics of
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