From jump to flight
Since his first successful flight in 1891, Otto Lilienthal is gripped by flying, almost like an addiction. Until his fatal crash in 1896, he uses every summer for his flight experiments. In the Berlin countryside, he searches for the best heights to jump from, eventually building a "flying mountain" by himself and constructing flying machines, which he continues to modify and refine.
In September 1893 Lilienthal applies for a patent. In the patent specification, he describes a flying machine that is to "serve for the exercise of free flight for humans and is to allow both gliding flight without moving wings and flapping flight with moving wings". His patent also gives him the hope of earning money from the sale of his aircrafts. His goal is to establish flying as a sport and thus popularize it: "Hundreds of young, strong people would own such affordable gliders, and would try to outperform each other in the art of gliding". He promotes this goal also through public flight experiments in front of audiences and the press. The pictures of renowned photographers such as Ottomar Anschütz and Alex Krajewsky go around the world.