Now very few people can be surprised with such useful and necessary invention as the bicycle. It is practically in each house: adult, children's or school, usual or sports, in two - three - or even a four-wheel variation. And only two centuries ago its emergence on city streets could draw attention and excite minds of passersby.
Instruction
1. The palm in the invention of the bicycle allegedly belongs to Leonardo Da Vinci. At one time in network information that in its drawings or in drawings of his pupils the project of the bicycle or scooter was drawn walked. Most likely, this information can be considered an invention, and mostly fashion for attributing to the genius nearly of all inventions.
2. It is authentically known that a predecessor of the bicycle was the scooter or the draisine. The draisine received the name by last name the father inventor – the baron Karl Von Dres. The German professor created the child in 1817, later having patented it as the car for run. It was the first in stories real scooter which reminded the modern bicycle without pedals.
3. In 1818 Denis Johnson improved Drez's invention, having equipped it with sitting with the regulated height. In the late thirties the Scottish smith Kirkpatrick Macmillan added the XIX century to the scooter of a pedal and actually became the inventor of the bicycle in the form in which it can be seen today. However to perfection it was still very far: a back wheel of the bicycle of Macmillan was in one and a half more than the front, chain mechanism was not yet, the frame was wooden, pedals on a front wheel did not turn, and were pushed, and nobody even thought of rubber tires.
4. In 1864 Olivier's brothers together with the engineer-inventor Pierre Micho put production of bicycles on a stream. Micho suggested to make a frame metal, and the back wheel is much less than front. Presumably he also called the advanced design bicycle. Many researchers call the inventor of the bicycle of Pierre Micho. The invention became widespread, along with two-wheeled models also three-wheeled scooters with convenient sitting, large back wheels and to small lobbies began to be used.
5. In 1867 the next changes were made to Dreza-Misho's design – the case became completely metal, wheels with needles were added. And in 1884-1885 the bicycle was equipped with a chain and made wheels of the identical size. In 1886 the bicycle found inflatable rubber tires, and more than ten years later added the brake system to it.