Thor valve grinding machine

I was told that the chunk that holds the valve is supposed to spin while the grinder is running. This one doesn't. Also the handle that is on the front of the machine, on the far left (picture in first post) doesn't move freely. I don't know what it is supposed to do, maybe that one is to engage the chuck(?)

It's an old machine, I THINK it could be made to work again, but she's been sittin for many many years. I just don't want to misrepresent it; it's really of no use to me, other than possibly salvaging the electric motor off of it. And that is the only thing I can guarantee on the tool.