Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 387
Fig. 846. Fig. 847. MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. 373 of this kind, and Fig. 847 a plan of the loAver seat a, with the valve-guides ^ ^in section. There are two seats, a and h, and two faces on the valve corre-sponding to them. The balance depends upon the relative diameters of…
Mechanical drawing
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