Geared Heart, Hand Crank Edition

eared hearts fascinate me (perhaps because I was born on Valentines day?). I'm unsure as to who created the first one (sorry for being unable to credit the original creator) as I was unaware that geared hearts had been around for a while. For example, I found this 2008 video of a paper hand cranked geared heart http://www.youtube.com/watch?v=70dKZjP4NOo and was intrigued. Inspired by the paper hand cranked geared heart video, and emmett's brilliant geared heart design, yet having too little tim