Whatever it is, its mine, garden art 

The front wheel at one time looks like it was adjustable like a gauge wheel. But the frame is very curious if it was cultivator or what it was. That will make a very interesting garden coffee table

It's a neat whachamacallit if you ask me. Definitely needs to be a garden table of some sort.

I don't know what it is, but I'm sure someone spent countless hours behind it in the hot sun. I think it would be a fitting way to honor them, sitting beside it and drinking coffee.

looks like it could be a sun lounger shape to me