Networks of Wind Energy Enthusiasts and the Development of the “Danish Concept” - Wind Power for the World: The Rise of Modern Wind Energy - page 122

The introduction of electricity-generation systems in the
late 19th century along with increased use of electric appliances
for the home and the workplace likely stimulated a number of
independent attempts to convert windmills for use as electricity
generators. However, none of these attempts in the Unites States
were as large in scale, both in size and generation output, as that
of inventor Charles Brush's who built his 12 kW “wind dynamo”
in Cleveland, Ohio in 1888. The machine included a 60 ft. (18 m)
tower with a wind rose rotor configuration of 56 ft (17 m) in diameter
with 144 wooden blades. The DC electric generator designed
specifically for the wind turbine was capable of providing 12 kW
of power at a full load of 500 rpm. Word of Brush's dynamo spread
across the country and even received coverage in the magazine
Scientific American .

Figure 5.5

“Mr Brush's Windmill Dynamo” published in Scientific

American (20.12.1890, 63, p. 54).