1847
Start of production of railroad equipment.
Since the previously manufactured rolls are practically indestructible, demand for them - over the long term - decreases. However, the expansion of the railroads opens up virtually unlimited possibilities for durable cast steel. This triggers the company's first surge of growth. Supplies include axles and springs and in particular the seamless tires developed in 1852/53 by Alfred Krupp - sole proprietor of the company since 1848 - which are able to withstand the increasing running speeds without fracturing. In 1875 Alfred Krupp uses three superimposed tires as his trademark which goes on to become famous throughout the world.