Cam shaft timing adjustment device

Apparatus comprising:

• a shaft having an axis of rotation and an end face in a plane perpendicular to the axis of rotation;
• a cylindrical mounting stub extending from the end face in axial alignment with the axis of rotation;
• a circular sprocket carried on the mounting stub with the mounting stub extending axially into the sprocket;
• a first pin extending from said end face parallel to the axis of rotation at a location radially outwardly thereof, said first pin extending through an enlarged opening in the sprocket;
• an adjusting plate engaged with the sprocket on the side of the sprocket opposite the end face, the adjusting plate positively engaged with the first pin with at least one second pin extending between the adjusting plate and the sprocket parallel to the axis of rotation but at a radial location different than the first pin, the adjusting plate being pivotal about the first Din to produce driven movement of the sprocket on the mounting stub such that angular adjustment of the adjusting plate about the axis of the first pin produces angular adjustment of the sprocket relative to the axis of rotation of the shaft;
• and,
• connecting means for releasably clamping the sprocket and the adjusting plate in desired positions of angular adjustment.