A Rosling breathing valve. From The Department of Scientific and Industrial Research, Advisory Council, Second Report of the Mine Rescue Apparatus Committee, Published by His Majesty’s Stationary Office, 1920, page 31.
Tag Archives: Rosling
Rosling Valve, 1922
The Rosling valve was originally patented in England prior to World War I and was used in mining and gas masks. This drawing is from Cecil Rosling’s American patent application. The valve had low resistance and unlike many valves of the time, the rubber diaphragms themselves provided the spring action. The Rosling valve was used extensively in physiological research from the 1920’s to the 1950’s.