Perfex Series 155 Magic Dial Thermostat
Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.
Anti-Corrosion Device Patent (1949)
Here is a circa-1949 patent for an anti-corrosion device in water heaters. Thanks to Joe Szakacs for sharing this with us.
Categories
Leave a comment
Comments by Vanilla
Related Posts
The American Society of Heating and Ventilating Engineers Guide (1929) - Hot Water Heating Systems and Piping
This chapter on hot water heating systems and piping was prepared by Professor F.E. Giesecke (Director of Texas Engineering Experiment Station in TX) for the The American...
Jarecki Radiators (1890)
Here are ratings for the Erie radiator from Jarecki Mfg Co Ltd. They were based in Erie, PA and their radiators appeared in issues of Domestic Engineering in the 1890s.