B67-641 COOPER'S BARREL HEAD BRACE. Brace with 10" sweep affixed to a 13-1/2" long beam that can be adjusted to cut out circles of up to 20" in diameter. There's a spike to hold it centered, and two wedged cutters, one present and one missing. There's also a wooden peg attached by a piece of twine that may have been used for layout purposes. The beam is secured by a handforged ram's head wingnut. There's a large chip out of the head, and a old split repaired with a metal strap, but otherwise in good clean condition. The brace was accompanied by a copy of Dryden's 7/7/68 patent for a "boring machine" but the tool is unmarked and doesn't really resemble the patent description. From the collection of Jim and Christa Schoenky. Good 200-400