Here is another Dover publication that boasts to represent 1800 mechanical movements. Needless to say, I just ordered it. I love how affordable the Dover books are!
There is a post on The Proceedings of the Athanasius Kircher Society that has a great round-up of mechanical reference books. Be sure to read the reader comments for all the good sources cited.
Check out 1800 Mechanical Movements, Devices and Appliances (Dover Science Books)