From the advertising section of Thorax, June 1958, page III.
Category Archives: Advertisement
Lung Developer, 1903
Little Gem Lung Tester, 1903
Spirometer, Monaghan M403, 1974, Advertisement
Spirometer, Simplex, 1901, Advertisement
Spirometer, Marsh’s, 1882
Spirometer, Marsh’s, 1889
From: Catalogue of Sharp & Smith, Importers, Manufacturers, Wholesale and Retail Dealers in Surgical Instruments, Printed by Blakely Printing Company, 1889, Page 529.
Advertisement from: The Homoeopathic Guide, Published by Munson & Co., 1881. Fronticepiece.
To use Marsh’s spirometer the subject exhaled into the balloon. A measuring tape attached to the balloon measured the circumferance and therefore the volume exhaled. A criticism from elsewhere was that the balloons broke frequently and that it required 20 mm Hg of pressure “before any test of the expired breath can be recorded”.
Spirometer, Narragansett Machine Co., 1916
From: Catalogue of Gymnastic Equipment, Narraganasett Machine Company, 1916, page 152.
“The wet spirometer is generally admitted to be the only device for measuring lung capacity that will continue to record accurately. There is no rubber reservoir to leak or harden and crack in two or three years; an air cylinder immersed in water never leaks or wears out. The air cylinder is made of sheet zinc, and as it is made on an arbor they are exactly the same size and capacity, and record accurately their cubic contents. This cylinder is carefully balanced by weights that run in the tubes at the sides. The side tubes are polished brass and one of them is graduated to measure the height, and consequently the volume contained in the cylinder. One side of the tube is graduated to cubic inches, the other to cubic decimeters. The stopper at the left lets the air out of the cylinder for it to descend, and that at the right has has been replaced by a valve to let the water out of the tank. All parts except the brass tubes are finished in white. It has a capacity of 400 cubic inches or 6.5 cubic decimeters (liters).
A convenient shelf is made to hold the spirometer when no other support is available.
No. 595. Wet Spirometer. Weight 25 pounds. Packed for shipment.”