Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 232
gh to prevent this, it would then betoo small to work with the low pressures which it is necessarysometimes to use. To meet this difiiculty the starting valve, shownin Fig. 6, is used. In this case we have a double valve; that is, thestem c, fits by a conical face upon the valve, proper, D D; but… … m ■Jiurtinl Frnnklin Institute, Vol. LVl. The Gifiinl Injector. Phite I. ^
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