Interested in finding out the historical development of the vacuum coffee pot?

I found a webpage title The Historical Development of the Vacuum Coffee Pot. The site has detail explanation about coffee especially the vacuum coffee pot. There are also some pictures or drawings of the early design of vacuum coffee pot. Examples of vacuum coffee pot are Palmer’s 1786 patented coffee urn with spirit lamp, hot water jacket, and dual spigots, Petsch and Buynitzky’s 1868 coffee making apparatus, 1934 Silex patent drawing for an electric stove for vacuum coffee brewer and many more. There are lots of readings if you’re really interested in the topic of vacuum coffee pot. As for me, the drawings of the vacuum coffee pot are good enough for me. I’ll leave the reading part for you.