OCR Text |
Show Automatic Oxygen Oygen " { MasksUnlike \ Masks l\Iasks l Iasks MasksUnhl - Unllke Unlike Unhl > .e e . all other o oxygen xygen masks maskswhich maskswhich which must be regulated by the thewearer thewearer thewearer wearer the latest type now being be- be bemg be being - - ing mg made for United Umted States mlh mile mlhtary miletary milltary tary airmen works automatically automaticallyand and eliminates a great deal ofworry ofworry of ofworry worry and guesswork , , says CollIer Col lIer her hers s sAt sAt At all altitudes up to 38 000 feetIt feetit feet it supplies the flier with the propermIXture propermixture proper mixture of air all ' and oxygen the theflow theflow theflow flow of both being regulated by byvalves byvalves byvalves valves which in turn are controlled con1 conI con controlled I trolled by atmospheric atmosphenc pressure |