Abstract
AN air mask which will provide the rock driller, painteror chemical worker_with fresh air and protect him from poisonous gases, smoke and dust is described in a recent reportby Science Service, of Washington, D.C. The mask is literally a film or curtain of air completely covering the user's face but leaving the eyes, nose and mouth free. When it is intended for use as the conventional gas mask, the new maskis a shield similar to an eye shade and worn on the forehead. The visor of the shield contains an air chamber, provided with numerous outwardly slanting openings at its lower edge. When air under pressure is forced into the chamber, streams of air issue outwardly and downwards from the openings, and form a transparent air screen or curtain completely covering the face but at some distance from it. With this air film for protection, the user could pass through dust, smoke, gas or paint fumes without any of them coming in contact with his face. The inventor also claims that there would be no trouble in breathing, the air curtain furnishing a continual supply of fresh air.
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Air Mask to Protect Workers. Nature 137, 697 (1936). https://doi.org/10.1038/137697a0
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DOI: https://doi.org/10.1038/137697a0