Pencil Austrian inventor Joseph Hartmut. He was February 20, 1752 was born, his father was a carpenter Austria Aspen Poen. Hartmut in Vienna (Vienna) learn the mason craft, and later became the architect, who had founded a brick.
Poor quality pen was used to write, he was determined to invent a new pen. He wanted an idea: the clay and graphite powder were mixed together to make the shape of the cartridge, the fire burning, so you can draw on paper traces.
He joined an appropriate proportion of clay graphite powder, making pencil a certain hardness. In 1792, he founded his own pencil factory in Vienna, until today, this pencil pencil factory still in production.