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820,548
ders when the bottle is in an upright position,. a valve comprising a disk having a convex lower surface corresponding to the concave surface of the contracted portion and also 5 having a guide-stem pendent therefrom, said disk being provided around its edge with an outwardly-projecting guide and stop--flange which operates within the annular groove, and a series of lugs projecting upwardly from io the guide and stop--flange to engage with the
upper side of the before-=mentioned annular groove and holding the valve spaced there- from when the bottle is inverted. In testimony whereof I affix my signature in presence of two witnesses. JOSEPH BURKE. [L. s.] Witnesses: F. S. BUHLER, CHASE. C. ZIRJACKS.