The success story of Paul Maschinenfabrik began in 1925, when Max Paul set up a mechanical workshop in his father's house in Dürmentingen. In 1953, Paul entered the field of prestressed concrete technology. This was followed in 1959 by the first single-wire stressing jack with the then revolutionary two-button operation. By 1965, the company had grown to 120 employees and 4,500 m² of production space. Important innovations at this time included the Tensa SM stressing process (1960) and the Tensa M multi-stressing jack (1970). In the mid-1970s, part of the production was relocated to Riedlingen.