Tower press is blunter to crush olives than human methods with feet or hands or with the help of instruments like clogs or maces. Caused in the beginning of the olive culture the use of big stones that applied pressure on the olives or paste to make this ones to release all the oil that they had inside. In the following image we can see a drawing with the parts that form the tower press.
Tower press, uses human strength to move the machinery that crushes the olives.
Source: Pieralisi España S.L