Abstract: Motor vehicle windscreen wiper comprising a wiper arm driven by a motor driven operating shaft through a transmission device including a lever having one end coupled for rotation with the operating shaft and its opposite end articulated to the wiper arm, and a rocker link pivotally connected to the lever and articulated at its respective ends about an eccentric pin fixed relative to the operating shaft and to the wiper shaft. The transmission device enables the wiping angle covered by the arm to be increased and, in the case of a single arm windscreen wiper, the positioning of this arm horizontally within the limits of the field of wiping.