Appleton's cyclopædia of drawing, designed as a textbook for the mechanic, architect, engineer, and surveyor (1866)
Worthen, William Ezra, 1819-1897, [from old catalog] ed, Appleton, firm, publishers, New York. (1866. D. Appleton & co.) [from old catalog] · New York, D. Appleton and company · leaf 155
, these Avill meet R T inthe same point T (fig. 215). Similarly in the funicular curve or catenary (fig. 216), if we draw tan-gents at the points of suspension A and B, these, being in the direction of 118 MECHANICS. the forces sustaining the curve at these points, will meet when producedin the… … M T the tension at B. Such a curved line is more liable to ruptm-e,therefore, at the upper point of suspension, and in construction, when pos-sible, should be of greater dimensions. If a polygon of rods be reversed, that is, placed upright instead of sus-fended^ the position in which it will stand…
