Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 388
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… … \^ ^^ ^^ K^ Fig. 848. h and the interior at a are both tight, the valve is balanced under any pressure,except as to its own weight; s is the valve-stem, and the hole r is for a bolt tofasten the valve-seat to the casting of the steam-chest. The scale is -J full size.Fig. 848 is another form of…
Mechanical drawing
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