York2023-40 SHINGLING BRACKET. Seymour Patent. Patented in 1875 by William Seymour of Gloversville, NY, and designed to attach scaffolding to roofs for use in shingling. It's a weird looking gimmick, 5" long and made of japanned cast iron with the patent date cast into the body. We'll let you read the patent to figure out how it's supposed to work. Fine 80-150