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Feb 24, 1219
First Documented Windmills
They believe the first documented windmills were made in china in 1219 AD. By the chineses statesman Yehlu Chhu-Tshai. -
Mar 4, 1219
Vertical Axis Windmills
Vertical-axis windmills were also used in China, which is often claimed as their birthplace. While the belief that the windmill was invented in China more than 2000 years ago is widespread and may be accurate, the earliest actual documentation of a Chinese windmill was in 1219 A.D. -
Feb 24, 1390
The re-design
As early as 1930, the dutch went out to refine the tower mill design. The dutch essentially made it a 3 story tower. One for grinding grain, removing chaff, and storing grain. -
Mar 4, 1390
Introduction to steel blades
As early as 1390, the Dutch set out to refine the tower mill design, which had appeared somewhat earlier along the Mediterranean Sea -
Expansion of windmills
Between 1850 and 1970, over six million mostly small (1 horsepower or less) mechanical output wind machines were installed in the U.S. alone. -
First Electrical Output Wind Machine
In 1891, the Dane Poul La Cour developed the first electrical output wind machine to incorporate the aerodynamic design principles used in the best European tower mills -
Usage of tower mills decrease
While continuing well into the 19th century, the use of large tower mills declined with the increased use of steam engines. The next spurt of wind power development occurred many thousands of miles to the west. -
First successful multiblade windmill
In the late 19th century, the successful "American" multi-blade windmill design was used in the first large windmill to generate electricity. -
Aerodynamic Brakes
Some models also featured aerodynamic brakes, spoilers, and flaps. (which was operating with two of its buddies pumping water about one meter up from one irrigation pond to another in the Netherlands in 1994) -
First Windmills
The first windmills were used to pump water.
