The desire for individual flight in light aircraft became a reality in 1920 with Mignet’s Pou du Ciel, Dormoy’s Flying Bathtub in 1924, and so on.
But it was really in the mid-1970s that motorized ultralights took off.
During the previous decade, the idea of a single-seat helicopter without a cabin was born, and toy manufacturers miniaturized it to the delight of children.
Niedermeier in Germany
Ca. 1955, lithographed tinplate, wind-up mechanism, rolls on the ground, rotor turns, 7 x 15 cm
Haji in Japan
1955 – 1960, lithographed tinplate, friction mechanism, rolls on the ground, rotor turns, 7.5 x 21 cm