Jacobs three-bladed windmill

The Jacobs three-bladed windmill, developed by Marcellus and Joe Jacobs, was a significant advancement in early wind-powered electricity generation. These turbines were designed to provide power to remote farms that lacked access to conventional electricity, offering a more cost-effective solution than gasoline generators. The design was based on earlier water pump mills, but the Jacobs brothers ingeniously replaced the blades with airplane propellers, creating a more efficient system.

The Jacobs Wind Electric Company was founded in 1927, and between then and 1957, they sold over 30,000 units. These wind turbines were widely used throughout the 1930s and 1940s, with hundreds of thousands of similar systems operating across the country. The Jacobs three-bladed windmill, in particular, was popular between 1930 and 1960 and could generate about one kilowatt of power at a wind speed of 6.25 meters per second.12