A Brief History of Gears - July/August 1999
The article "A Brief History of Gears" appeared in the July/August 1999 issue of Gear Technology.
No one is quite sure when gears were invented. It's universally agreed, however, that they've been transmitting motion in one form or another for quite a long time.
The article "A Brief History of Gears" should appear in the box below, but if you do not see it, you can download it here.