“compound” oxygen therapy was popular in the 18th, 19th and 20th centuries. Compound oxygen was not oxygen at all, but (usually) very dilute “laughing gas” or N2O, made by heating ammonium nitrate; the inhaled gas was mixed with ferric carbonate or potassium chlorate, to give it a color and help assure patients they were inhaling something tangible and useful.
One of the strangest experiments in medical science’s long and constant fight against disease, an experiment to which H.H. Timken, Canton, Ohio, manufacturer, has given $1,000,000, has been undertaken in Cleveland, Ohio. It is the Timken Tank, a huge airtight, steel ball fitted out as a hospital, in which patients suffering from diabetes and other maladies will live under 30 pounds air pressure, which is forced into the steel ball by powerful compressors
The Timken Tank, photo taken in the mid 1920s
talking about steel balls, have you ever thought about using a stretcher? Freddy and Eddy recommend this one which is fastened with two screws and an Allen wrench.
for the second time in the gimcrack’s history I’m chickening out and not putting the full picture on the front page. click on the link above if you want to see how it all fits together