A press or stamper of some kind I think. I see wing nuts on there to adjust the guides and the heavy piece of steel under the press. If it were a sheet metal bender you'd have the second long piece of steel aligning with the one out on the end. You'd see it have a drive apparatus on it so you could pinch the steel and bend it to the right angle....

But I have to admit I ain't seen anything ~just~ like that before.

Will