9 Aug 1859 American Nathan Eames received a patent for the world’s first escalator, which he called “revolving stairs”. But his idea did not spread, no working model has not been built, and the inventor died and did in 1860. And 33 years later another American, Jesse Reno, received a patent for a more advanced idea of the escalator. In 1884, the device appeared in one of the parks in new York, but don’t use sake, but for fun, that is as an attraction. However, it was not so much the escalator in its modern sense, how many blades are moving under the slope of 25 degrees.
Escalator-ride to Reno in new York
More like a modern escalator, the prototype was patented by George Wheeler, whose patent was acquired by the Charles Seeberger. He, in turn, soon began to work in Otis, where he built the first escalator. Since then, their popularity has grown steadily. First, they can be found mainly in large shops from different countries; from 1911 — in the London underground. In the USSR, the escalators came only with the advent of the subway. Due to the high cost of foreign machines, it was decided to develop and adjust their production, with what Soviet engineers successfully managed.
9 Aug 1898 year, Rudolf Diesel received a patent for the internal combustion engine in which a combustible mixture is ignited in consequence of the high compression, not spark.
Born in the family of a bookbinder, Rudolf Diesel he was of the same excellent results. In 1880 he graduated from the Munich Higher technical school with the best results in its history.
Rudolf Diesel
To build the engine with self-ignition of the mixture from the compression was preceded by years of hard work. In 1890, the year Rudolf Diesel has put forward the theory itself of creating such a power unit, and in 1893 received a patent for the first device and built a prototype. However, in that year, the experiments were not successful.
The Engine Of Rudolf Diesel
By 1897, the inventor was able to assemble a workable model “diesel” engine of 20 horsepower. He had only one cylinder, duty cycle which consisted of four cycles. Design height was three meters and a weight of five tons. The efficiency of the power plant twice the corresponding figure of the marine steam turbine (26% vs 12%), therefore, the invention was immediately interested Industrialists from different countries. Later Rudolf Diesel didn’t just sell a license to use his creation but also built a factory to self-production.