Undated publicity photo. Style suggests it’s from around 1950 but could be a decade either way.
Category Archives: 1950s
Spirometer, Collins, 1 Liter Animal with Cage, circa 1950
Undated photograph, but likely from around 1950.
Blasius Universal Ergometer, 1955
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 106. Dated as being manufactured in 1955.
Knipping Ergospirometry Apparatus, Model c, circa 1950
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 31. Undated, but probably from around 1950.
Fleisch Metabometer, Diagram, 1955
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 39.
Fleisch Metabograph, Diagram, 1955
From “Methods in pulmonary physiology”, by Bertels H, Bucherl E, Hertz CW, Rodewald G, Schwab M. Translated by Workman JM. Hafner Publishing Co., 1963, page 42.
“Figure 42. is a diagrammatic representation of the construction of the apparatus. A motor (M) drives the pump (31), which sends air int the CO2 abdorbant chamber (42). Freed of CO2, the air passes by way of the tube (33) into (21), then under the valve (19). From here it is led through tubes (22), (17), (14), (15), (30) and returns to the pump (31). During inspiration the bell (9) of the double spirometer sinkes and a corresponding volume of air passes out of (I) through tubes (12) and (14) into the lungs, while the pump removes an equal volume from the chamber (E) through tubes (11), (30). During expiration, the volume of air that leaves the lungs travels by way of (15) and (11) to chamber (E), while the corresponding volume passes into chamber (I) through (17) and (12). This the bell (9) rises. The partitioning septum (10) is pierced by a small opening so that some air is always passing from chamber (I) into chamber (E), preventing accumulation of CO2.
“Volume stabilization is achieved through an electrical contact (7). When contact is broken, oxygen is added to the system by a pump through (26). This establishes the bell in the middle position, and maintains the O2 concentration in the system practically constant. When the bell touches the contact (7), the total volume of the system is 32 liters.
“In the absorption chamber (42) there are rotating discs, over which KOH runs. This arrangement provides the larges possible surface area for CO2 absorption. The KOH is collected in a sump (43), removed hence by a pump (39) and sent back to the distribution chamber (34) by three parallel routes (38), (37) and (36). Recording of CO2 production is based on the measurement of the electrical conductivity of the KOH. Throughout the period of study the conductivity of the KOH is held constant. When the degree of alkalinity of the KOH is reduced by the expired CO2 resulting in reduced conductivity, fresh KOH is added through the side tube (32) until the original conductivity is restored. Thus the CO2 production of the subject under study is determined directly by the amount of fresh KOH that has been added.”
Collins Respirometer, 1952, Advertisement
From a sales brochure for the Collins Respirometer, printed in 1952.
Gas Analyzer, Scholander, circa 1950’s
Although this photo was published in a 1976 textbook, this device is probably from the 1950’s or earlier. Used to measure oxygen and carbon dioxide by an absorption technique. From Medical Instrumentation for Healthcare, by Cromwell L, Arditti M, Weibell FJ, Pfeiffer EA, Steele B, Labok J. Published by Prentice-Hall, 1976. Page 270.
Spirometer, Marsh’s, re-purposed, circa 1950’s
Found on Gajitz.com. Looks like Marsh’s spirometer but sold as a “bust enhancer”. Photo was undated but looks like it came from the 1950’s.
McKesson Metabolor, Model 185, circa 1950’s
Stand-alone metabolic testing system, probably from around 1950. Found on Ebay.