The third of 3 mechanisms doing the same thing, but using different solutions.
All of them have a 1:1 relation between input/output, but while input is continuous, output changes with time.
This one uses a bevel gears planetary (differential type) combined with a woobling axle mechanism. The speeds add/subtract, resulting in an intermittent movement.
Modeled with Solidworks 2015.
Rendered with Simlab Composer 6 Mechanical Edition.
Video at https://youtu.be/2g_yteUrj2o.