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You can also find animations for many of the movements here: http://507movements.com/

Also Cornell's KMODDL, I suppose start here:

http://kmoddl.library.cornell.edu/resources.php

Thanks for the link. I've had both 507 Mechanical Movements and 1800 Mechanical Movements for quite some time now. This seems like a great reference for mechanisms.

It would be nice to see animations of Leonardo Da Vinci's many mechanical systems as well.

Cool site. I would love see an animation of number 30! :)

It's also freely available on https://archive.org/search.php?query=Five%20Hundred%20and%20... ;-)

Is it really a "hack"?

Friend of my parents is building this

http://000fff.org/watches/523223_10150679399796150_150139365...