My 97 year old uncle got a shirt sleeve caught on a PTO splined shaft on the back of a "B" John Deere back in 1935. Luckily for him grandma was able to cut his shirt sleeve free, but, not before he broke a bone in his arm about an inch and a half above the wrist. Grandma took him into the house and got it as straight as she could and used two wooden spoons and a dishtowel to stabilize the break until it healed up. Thankfully the PTO was disengage quickly when it happened. The bone healed with a bit of a kink in it, but was fully functional and it wasn't bad enough to keep him out of the Army in WWII. Farming has always seemed like the most dangerous job in America to me. I cant imagine cutting off my own leg. I hope he had a full flask with him before he started.