Ball Lifting Machine Using Wooden Offset Cams

Here's a neat mechanism that lift balls up an incline. Offset cams lift the balls in sequence as they advance up the steps. When it reaches the top, the ball shoots down a slide so it can start again.

The same technique is used by this dragon automaton and a similar kinetic sculpture. It's nice to see just the mechanism in detail in this video.

Found via the always cool MAKE Blog.