Impressive!

A nice bit of machinery, a nice bit of rust, best wallowed in LARGE.
What is it, or rather, what was it in its functional days? Some kind of press, I think, but what for? It's just outside the farm shop at the Welsh Venison Centre at Bwlch (a wonderful name - however you pronounce it, correctly or incorrectly, it sounds rude!), but I don't think it was used for deer.