The mechanical fan originated on the roof. In 1829, an American named James Byron was inspired by the structure of a clock and invented a mechanical fan that could be fixed on the ceiling and driven by a clockwork. The cool breeze brought by the rotating blades of this fan makes people feel happy, but it is troublesome to climb up a ladder to wind up the clockwork.
In 1872, a Frenchman named Joseph developed a mechanical fan that was started by a clockwork turbine and driven by a gear chain device. This fan was much more refined and easier to use than the mechanical fan invented by Byron.
In 1880, the American Shule installed the blades directly on the electric motor for the first time, and then connected the power supply. The blades rotated rapidly and cool breeze blew in. This was the world's first electric fan.