A horse drawn disc. Operator would sit on the seat at the rear and manage the discs via the handles and at the same time would control the team. Equipment like this required a lot of physical strength to raise and lower the discs and control the team. Maybe more hands would have made the practice easier.
When I was in my teens I worked for a man, Frank Long. His equipment was a combination of horse drawn and tractor drawn. He cultivated with a horse drawn cultivator. He had modified the tongue on a horse drawn mowing machine to fit a tractor. He would drive the tractor I would ride the mower and operate it by raising and lowering the cutting bar. The mower was powered by the iron wheels turning and causing the cutting blade to go back and forth via a pitman arm to cut the hay. We then raked the hay with a dump rack pulled by the tractor and me running the dump rack. Hay was hauled by a trailer or a slip pulled behind the tractor. Of course the hay was loaded by hand.