Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 212
The force is exerted in the … Fig. 391. Fig. 389. Fig. 390. determined by the perpendiculars a h and & c let fall from the fulcrum on the directions of the forces. The toggle-joint (Fig. 391) is much used for presses. direction of the arrow at C, and the effective force is to separate the plates A and B. The action is as…
Mechanical drawing
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