Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 231
Fig. 416, … Fig. 417. MECHANICS. 215 watts parallel motion. Watts parallel motion is shown in Fig. 416, theobject of this motion being to obtain a rectilinear mo-tion of the piston-rod and air-pump rod under thevarying angularity of the beam. In the figure the line C D indicates the centre ofthe beam; from the…
Mechanical drawing
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