From a Collins sales brochure printed in 1949.
Category Archives: 1940s
Ear Oximeter, 1942
Early ear oximeter used for altitude research. From Popular Science Magazine, May 1942. “How flyers are redesigned. Air Surgeons groom men for survival at high altitude”, pages 118-119.
Douglas Bag, 1942, Altitude Research
Douglas bag used to measure oxygen consumption in altitude research. From Popular Science Magazine, May 1942. “How flyers are redesigned. Air Surgeons groom men for survival at high altitude”, page 117.
Douglas Bag, 1942, Altitude Research
Douglas bag used to measure oxygen consumption in altitude research. From Popular Science Magazine, May 1942. “How flyers are redesigned. Air Surgeons groom men for survival at high altitude”, page 116.
Douglas Bag, 1942, Altitude Research
Douglas bag used to measure oxygen consumption in altitude research. From Popular Science Magazine, May 1942. “How flyers are redesigned. Air Surgeons groom men for survival at high altitude”, page 116.
Spirometer, 1945
Found on Senzon’s Philosophy of Chiropractic website which references a 1945 Clinic Magazine as the source. Photo of a spirometer in the B J Palmer Rehabilitation Clinic in Davenport, Iowa. Appears to be a Hutchinson spirometer similar to those made by Narragansett Machine Company and others.
Spirometer, Boulitte, Benedict-style, circa 1945
Spirometer, Kifa, Krogh-type, circa 1940
Found on the Steno Museum Collections website. It’s description (translated from Danish by Google): “Vippespirometeret is of the type which August Krogh constructed in the early 1900s. This vippespirometer was purchased and used by the Department of Physiology, University of Aarhus in 1970. Here it was used in studies in climate chambers for the determination of “closing volume” that is the volume of the lung, wherein the first airway collapse during exhalation, and a measure of the airway condition. The spirometer was used for the first Danish published study using this method.” Size 81x36x40cm. Dated by the museum as manufactured by Kifa, Stockholm, Sweden in 1940 although this date may be in error. I suspect but cannot be sure that the electrical wiring is for a water heater in order to keep the spirometer at body temperature.
Spirometer, Kifa, Krogh-type, circa 1940
Found on the Steno Museum Collections website. It’s description (translated from Danish by Google): “Vippespirometeret is of the type which August Krogh constructed in the early 1900s. This vippespirometer was purchased and used by the Department of Physiology, University of Aarhus in 1970. Here it was used in studies in climate chambers for the determination of “closing volume” that is the volume of the lung, wherein the first airway collapse during exhalation, and a measure of the airway condition. The spirometer was used for the first Danish published study using this method.” Size 81x36x40cm. Dated by the museum as manufactured by Kifa, Stockholm, Sweden in 1940 although this date may be in error. I suspect but cannot be sure that the electrical wiring is for a water heater in order to keep the spirometer at body temperature.
Spirometer, Benedict-Roth-Collins, 1945, diagram
From Bioenergetics and Grown by Samuel Brody, Published by Reinhold Publishing, NY, 1945. Chapter 12, page 314. Found on the website BeefEfficiency.org.