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John Cadman
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A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
A62B21/00—Devices for producing oxygen from chemical substances for respiratory apparatus
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Solid-Sorbent Or Filter-Aiding Compositions
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Abstract
12,454. Cadman, J. May 20. Respirators. - An absorbent material for removing carbonic acid gas in breathing-apparatus consists of a porous vehicle such as coke or charcoal, which, by immersion in molten alkali such as caustic soda, has acquired a coating or film thereof. Calcium chloride or other cooling-material may be added to the alkali to prevent heating of the air.
GB191412454D1914-05-201914-05-20An Improved Absorbent Medium for Carbonic Acid Gas.
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