Peaucellier-Lipkin linkage - GIF

[Hoosiersmoker]

It looks more like they're transferring a linear motion (no matter how it's achieved) to a perpendicular linear motion. The method here seems to start with an eccentric wheel trapped between two blocks (not exactly a locomotive motion?) to create the horizontal motion then the linkages that follow to create the vertical linear motion. Or am I missing something? The "wheel" actuation is pretty typical, so nothing new there, it's the following pantograph type linkages, with two fixed points running off of a gear and rack, that transfer the first horizontal linear motion to the perpendicular linear motion. This apparently 3d printed version has a lot of play in it that an actual application would not allow.