06/19/2026
2026 is the 250th anniversary of the United States of America. Over the next 250 days we will be highlighting historic people, places or things from around Walworth County.
Up next is John L. Chaney.
If your hobby was glassmaking and you worked for a thermometer company, observed the manufacturing process, and thought of a better, faster system, what would you do?
John Chaney devised a machine that could seal glass tubes better and faster. When he pitched his idea to the company, they were not interested. So he opened his own shop, perfected his machine, and eventually sold his invention to the Springfield, Ohio company he had been working for.
During World War II, the US armed forces contacted Chaney, now living in Lake Geneva, to research impurities in the glass components of explosives that were detonating unexpectedly. He hired local people, opened a shop in the old city garage on Main Street, and began producing higher-quality glass for the government.
In 1943, Chaney founded the Chaney Instrument Co. After the war, the company shifted its focus to making small glass tube thermometers for commercial use.
In 1958 the World’s Largest Glass Tube Thermometer was erected in downtown Lake Geneva outside company headquarters in recognition of their success.
Chaney Instrument Co. is still going strong under the Primex Family of Companies and remains headquartered in Lake Geneva.
Walworth@250: #171
Feel free to share.