The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 171
the upper chord is arched, as in Fig. 6 J, a sufficient weightwill cause tlie braces D, D, to describe an arc upwards, re-presented by c d. Pig. 6 b. When tlic cliord c e becomes PRACTICAL MECHANICS. 167 straight, the arc will then be described downwards, asshown in Fig. & a. As an illustration…
Mechanics, Applied
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