DeWitz v. Northern States Power Co.

In 1940 a gas heater was installed in the home of plaintiff and her husband. Until 1947 defendant furnished manufactured or coal gas to the heater. In that year defendant undertook to make certain changes in the heater so as to adapt it for use of propane or liquid petroleum gas. The change in the DeWitz home was made on July 22, 1947.

The heater was equipped with certain controls, safety devices, a pilot burner, and a main burner. When operating properly there was a constant small flame at the jet of the pilot burner. The flow of gas to the main burner was controlled by a thermostat which…