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 (1871)
Armengaud, Charles A., 1813-1893, Armengaud, Charles, 1813-1893, [from old catalog] joint author, Amouroux, Jules, [from old catalog] joint author, Johnson, William, 1823-1864. [from old catalog] · Philadelphia, H. C. Baird · leaf 178
ttedto the runner by aRijne, made on the balance principle.The top of the si)in-dlo is sphericallyshaped, as at o, be-ing passed throughthe collar disc, p,and fitted into aspherical recess inthe under side of tlioRyne, q, connectedto the stone, A. Inthis way, as the con-nection l)e(\veen thespindle… … 168 THE PRACTICAL DRAUGHTSMANS scale. A is the base plate, and b the lower running stone, drivenfrom above by the main spindle, i, which passes down through thecentre of the adjustable tubes of the feed-hopper, and terminatesin a convex foot. This foot rests in a concavity in the top ofthe disc…
Mechanical drawing
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