O-E Vapor System Manual
This manual was created by O-E Specialty Manufacturing Co. and outlines how to install the "O-E" Perfect System, which is a Vapor Vacuum heating system.
Eggleston Relief Device for Hot Water System Patent
This device, patented in 1905, is similar to the Honeywell Heat Generator. Thanks to Gerry Gill for finding and sharing it. Gerry points out that Lewis Eeggleston went on to become a heating engineer/inventor with numerous patents for both the American Radiator Company and the Detroit Lubricator Company.
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