User:MichaelFrey/Slider crank
File:Slider Crank with links numbered.svg
File:Rotary engine - animation slower.gif|Rotary engine as an example of the Second inversion
File:Bagger Animation.gif|Excavator
http://nptel.ac.in/courses/Webcourse-contents/IIT-Delhi/Kinematics%20of%20Machine/site/basickinematics/basickinematics07.htm -> Scotch YOke is similary