113,288. Wallace, C. F., and Tiernan, M. F. Nov. 14, 1916. Gas meters.-In an apparatus for dissolving gases in liquids, such as for making a solution of chlorine for purifying water, gas is fed from a cylinder to the inlet 30 of an absorption vessel 22 and into a bell 34 immersed in the water in which the gas is to be dissolved, and is delivered intermittently in measured quantities into the water by an inverted siphon 36 fitted in the bell. The water initially in the bell is pressed down by the gas until it falls beneath the bend 42 of the siphon and then rushes back and expels the gas from the bell until it closes the inlet 42a of the siphon, the gas leaving the bell by the outlet 38. The vessel 22 and the bell are of glass to render the operation visible for counting the discharges.
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