The practical draughtsman's book of industrial design and machinist's and engineer's companion : forming a complete course of mechanical, engineering and architectural drawing (1866)
Armengaud, M. (Jacques Eugène), 1810-1891, Armengaud, M. (Charles), 1813-1893, Amouroux, M. (Jules), Johnson, William, 1823-1846 · Philadelphia : H.C. Baird · leaf 26
ntre, and i b the radius of the smaller arc, I b k, which, together with the arc, h k, described with the centre,l, and radius, l d, equal to h c, form the lower portion of therequired figure; the lines, g h, l k, which pass through therespective centres, also cut the arcs in the points of… … The pencil is at a, in an adjustable holder, capable of slidingalong the connecting-rod, b, one end of which is jointed at c, to aslider on the horizontal bar, D, whilst the opposite end is similarlyjointed to the crank arm, e, revolving on the fixed centre, f, onthe bar. By altering the length of…
