The Bell Wheel

I am crazy about this thing! The Bell Wheel is on display at the Museum of Jurassic Technology in Culver City Ca.
Had I arrived earlier I could have spent hours in the room with this wheel of tinkling bells . A better video would be nice
but you sort of get the idea.
This is link better describing it's meaning .
http://www.mjt.org/exhibits/bellwheel.htm

http://www.youtube.com/watch?v=PvCJ2eZjoCk&feature=related
http://www.youtube.com/watch?v=SEz46q4JiD0