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.
Mark C. Honeywell's Patent for the Heat Generator
By using a pot of mercury and a submerged pipe, this device separated the water in the system from the water in the expansion tank. Honeywell called it the Heat Generator and it allowed open hot water systems to operate under pressure, and at higher temperatures, but still remain safe. This was a major advance in hot-water heating in that it allowed the hot-water people to compete with the steam people, whose prices were usually less. The patent dates to October 22, 1907. Thanks to Gerry Gill for sharing this with us.
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