Bought this unloader (hay trolley and hooks) at an auction yesterday. Kind of always wanted one, but prices were always too high for me. This one also came with the hooks which are very rare including the chains and the attaching mechanism/tripping mechanism. It is locked up in various places (rusted, not patina) but is undamaged (hope I'm successful in that area). Usually the wheels are what is damaged. In the olden days this trolley ran on a track in the top of a barn that had a 4 to 6 foot overhang at one end and a large door----the track ran out to the end of the overhang. The hooks were dropped down and attached to a load of loose hay and hoisted up to the door and then pulled back into the barn and tripped. Will post as I progress on this project.