Pat'd 1870 AJ Nellis Pittsburg PA Morsetto per fascio fienile per puleggia fieno o sollevamento n.2

Patent issued to Seymour Rogers of Pittsburgh on March 1, 1870. M ade by A. J. Nellis & Co., Pittsburgh, PA. The two spikes in the jaws grab onto the sides of an overhead beam. They then dig into the beam as weight is hung on the downward-pointing single hook.

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