1831 this was still a very imperfect instrument. It was not until the invention of the turn around Cultivator-edged instrument that won the Hearts of the farmers at a rapidly. It fits for all types of soil, is, depending on lighter or heavy machinery are available with 5, 7, 9, 11 or 13 teeth built, and loosens the soil up to 40 cm depth, without the to bring dead soil to the surface.