Customizing Chain and/or Belts

Hey guys,

One of the potential designs for our team this season would involve mounting a claw type thing onto a chain or belt to create something similar to the lift mechanisms on those ball roller coasters. I’ll try to find a picture, but if you know what i’m talking about, good.

EDIT: I found a video: It would be similar to this, but inverted.

Does anyone know how difficult it would be to mount something to a chain like that? Any help is appreciated.