I have a dearborn cultivator, but it doesn't look like a spring tooth. It has V shaped shovels, some are full and some are half V's. There is a culter in the middle to keep it steady. Never used it. Got it from a friend by doing a small backhoe job.
My neighbor has a Massey with a 6 ft tiller. He always does my garden, however he is getting old and not in great health. He broke up one place I'm re-seeding. Still have to work over the ground a time or two to get rid of the roots.
I have another place 20 miles from his big tiller that I've disked up. I want to get rid of the roots from the weeds before I seed.