Dynamo Crank

What does seem Gramme Dynamo?

I've searched Gramme Dynamo automatic image from Yahoo and Google, but every search I gives two results. One of them looks like a wooden frame with a crank, while the other is more bulky and has a cylinder in the center. Which of these images is (Zenobe) gram Dynamo? I think it's the one with the cylinder in the center, it was showcased in a museum website. That is, unless there are two versions of the dynamo Gramme.

go with the first option UR; I think there is only one

Dynamo Crank

Dynamo Crank