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.
G.M. Davis Air Valve Patent (1889)
On June 11, 1889, the G.M. Davis Regulator Company of Chicago, Illinois patented the Victor No. 2, an automatic air vent for steam radiators. It worked by the expansion of a composition element. It would be years before the industry produced a truly reliable air vent that didn't squirt water all over the curtains but this was a nice start. Nowadays, we take air vents for granted but they did not arrive easily.
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