The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing. (1857)
Armengaud, aîné (Jacques-Eugène), 1810-1891, Armengaud, Charles A., 1813-1893, Amouroux, Jules, Johnson, William, 1823-1864 · New York : Stringer & Townsend · leaf 26
tre, and i b the radius of the smaller arc, IB K, which, together \\dth the arc, h e, 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 wHcli is jointed at c, to aslider on the horizontal bar, d, whDst the opposite end is similarlyjointed to the crank arm, e, revolving on the fixed centre, f, onthe bar. By altering the length of…
Mechanical drawing
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