Description
The type A-14 demand oxygen mask was based on designs by Dr. Arthur H. Bulbulian of the Mayo Clinic Aero Medical Unit (his patent was applied for on July 1, 1943 and approved on June 6, 1944). Dr. Bulbulian and his colleagues, Dr. Walter M. Boothby and Dr. W. Randolph Lovelace II, had previously designed a nasal oxygen mask in the late 1930s. Known as the “B.L.B.”, (the designer’s initials, which also appear on the face mask of the A-14) it became the Army Air Corp’s type B-7 mask. In development since late 1941, the A-14 mask was manufactured by the Ohio Chemical and Manufacturing Company starting in the spring of 1943 and functioned as a component of the low pressure diluter-demand oxygen system that was adopted for use in all Army Air Force aircraft by the end of 1942.
This A-14A was a development of the original A-14, with some slight modifications. It was used in aircraft that did not require pressure-demand breathing (limit was 30,000 feet). This meant it could be used with the P-series flight helmets into the 1960s.
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