The somewhat erratic Wag- o- Matic

I am not too good at mechanisms for automata, so after years of wondering how to wag the tail of a dog by turning a handle I decided on this simple solution. In the 1950's when I was growing up, the o-matic suffix seemed to be applied to a host of machines and devices, Wash-o-matic, Dry-o-matic, Wipe-o-matic. Take a look at the Verse-o-matic and Dog-o-matic

I see from a Google search it is still used a lot, not so much for machines but to make high-tech processes and software seem friendlier. I am going to revive my only other automata the Spratomatic using this simpler technique.