Sullivan's Vacuum Regulator (1949)

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Thanks to Bob Polizzi for finding not only photos of T.J. Sullivan's vacuum regulator in place, but also its patent, which explains the entire operation of a device that did a many things. 

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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. 

 

Published on 04/22/2024 4:07 PM
Posted in Heating Museum