Cycling

Despite being a sport and, more generally, a popular activity around the globe, the invention of the bicycle is extremely modern, taking the form of the primitive celerifere, invented by Count Mede de Sivrac in 1790, which had not nor shall steering chain, but only advancement thrust.

By improving the draisine Von Drais, in 1839 Kirkpatric Mac Millan, Scottish farrier, fits a system of pedals and subsequently Michaux in 1855 engages the same on the wheel front hub (about three meters) in diameter, building an iron frame and inserting a skid on the rear brake.  This version of the bicycle began to take hold in Europe, so much so that the first organized bike rides, but had only a promotional purpose, and therefore are not considered sporting.

Several improvements are made over the years to rudimentary bikes up to the most models similar to those of our day:

•1869 – steel frame and forks, wheel coverings rubber

•1875 – front wheel of 1.5 m in diameter

•1877 – invention of multipliers gears

•1883 – use of a tangential ray system

•1888 – introduction of the tire invented by Dunlop 

•1897 – first freewheel

•1898 – it is inserted in the back-pedal brake.

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Autore:

Samuele Bicchieri, Desirèe Panarello

Classe:

4B Liceo Scientifico – Istituto Minutoli Messina -Sez. Quasimodo

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My trip in Malta gave me very good feelings! First of all, the school environment was very nice, and the teachers were.  very gentle and

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