Thanks to Frank "Steamhead" Wilsey for finding and sharing these pages from Heating By Steam and Water: A Practical Treatise on House Heating, published in 1907. He tells us, "This is the earliest orifice system, patented sometime prior to 1901 by Frederic Tudor. Also known as the French or German system since it was popular there. We've seen four of these in Baltimore." And thanks to Gerry Gill for providing us with Mr. Tudor's patents.
This booklet from 1905 showcases how American Radiator Company's radiators could become decorative pieces in a home. It highlights the "beauty in modern radiators" of tha...
American Radiator Company manufactured their Colonial Wall Radiators around 1905. The document attached below is an excerpt from The Ideal Fitter (1905) that states "The ...
Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.