Bacon & Thomas
Transmission mechanism for music box ornament
 A transmission mechanism for music box ornament, including a rotary wheel rotated by the eproducer of a conventional wind-up music box mechanism and having an eccentric rod, a locating block fixedly mounted within a base plate within which the wind-up music box mechanism is mounted, a follower plate supported on the eccentric rod and vertically 10 reciprocated by it along a downward rod on the locating block, and a tappet rod inserted through a hole on the locating block and driven by the follower plate to reciprocate an ornament. 
Yu-Kai
Chen