Insulated Glass for windows THERMOPANE

 Frank Stetson invented the glass insulated unit in 1865 Around In 1934 Charlie Haven invented the double sealed insulated glass unit in. This invention was named Thermopane and changed the landscape of Architecture. The IG unit answered the problems with high heat transfer and condensation with monolithic glass had caused for years. All turn of the century buildings used "SSB" or DSB" These acronyms stood for single, and double strength glass. Single is 2.5mm and double was 3mm.  Glass was drawn in sheets using the Bessemer process.  Up until the 1930s using small size glass was favored in commercial and residential construction.  Large glass would make it unbearably hot in summer and freezing in winter.  would allow for There are many books written on the development of early insulated glass and how requirements, and feasibility led up to the big push and process development by Libby-Owens-Ford (LOF) evolved unit after starting and stopping over 10 years. 

The technology needed to be perfected and substantial edge seal failure rates. IG units were also on the Governments mind as well. IG helped the issue with fog build up from breathing in the new jets. High altitude army bases and outposts, labs in Antartica.  By 1946 LOF built the first Thermopane glass factory in Rossford Ohio. In 1949 The John Hancock building was the first commercial use of Thermopane. The building skin used over 17000 double-glazed Insulated Thermopane glass units.  After the war the production of Thermopane rose for the next several decades. Postwar growth saw competition as new technology processes for IG were invented.