Steel wheels model Bonagente






In 1898 Italian captain Crispino Bonagente planned and manufactured a type of track with plates (patent n° 13,505, accepted on 29 September 1900), coinciding with an idea patented by the English inventor Richard Edgeworth in 1770, and improved by his compatriot John Richard Barry in 1821. Its original designation was “rotaie a cingolo” (caterpillar tracks rails), and it was formed by a series of metallic plates on oscillating support, mounted on the wheels. They not only enlarged the surface of contact, and avoided their collapse in the ground, but also constituted ramps of march on difficult grounds. When applied to carriages of siege guns they enabled them to travel over uneven soft roads, while being in proper position for firing, so that on arriving near a fortress the gun could fire immediately, such as in the case with field guns. They were applied for the first time on an Italian 149 A gun in 1910, but soon they were copied by other countries. France officially adopted them for its 120 L Mle 1878 De Bange on 12 June 1914 and for its 155 L Mle 1877 De Bange in the autumn of the same year. In Bulgaria the steel wheels model Bonagente were mounted on two 150mm L/30 Krupp heavy guns.