Tag: Girard-Perregaux 1957

  • Girard-Perregaux 1957 – At the Mirror!

    Girard-Perregaux 1957 – At the Mirror!

    In 1957 , Girard – Perregaux presented a solution that managed to enhance the performance of winding rotors by substituting roller-equipped unidirectional clutches for the ratchet wheels which, if compared to traditional solutions still used in automatic timepieces from that time, enabled both the rotor’s unidirectional movement and a longer lasting performance. This solution also…