Category: Education/Science >> Science and Technology
Problem description:
I want to use it now!
Analysis:
In 1770, Edgeworth invented a "railway or artificial road capable of running any carriage and moving together with the carriage" and obtained a patent in the UK. . His method was to connect several wooden slats into a circular chain and move them continuously in a certain way so that one or several slats were always in contact with the ground. His purpose was to spread the weight of the carriage over a wider surface when using narrow wheels, so that the carriage could travel on rough or soft ground. However, the Edgeworth design remained on the drawing board.
American inventor Battelle obtained a patent for a crawler track in 1888. In 1904, Holt also obtained a patent for a very practical crawler track invention, and put it into mass production in 1906. The rear wheels of the original steam tractor were replaced with crawler tracks, and the Holden crawler tractor appeared. This was the first tractor converted into a tank.
In 1904, the British company Hornsby and Sands had successfully trial-produced a much more complex design by David Roberts. It features lubricated bolts connecting the various separate links. In 1907, the first gasoline-powered crawler tractor ran on such tracks and was demonstrated to the War Department. However, as military enthusiasm waned, Hornsby sold their patent to Holt in 1912.