A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 230
the angle2a approaches 180°, and tan a approaches infinity asits limit; the mechanical advantage, therefore, whenthe levers are nearly in a straight line is enormouslygreat, and hence a very great resistance can be over-come. The toggle-joint is seen in the arrangement bywhich the cover of a… … Fig. 144. tudinal section of the machine. The parts show so clearly therelations explained in the preceding article that but little descrip-tion is needed. The power is applied to the wheel E, and as itrevolves the central post alternately rises and falls. This servesto work the levers, or toggles,…
Mechanics
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