Railroad Entity: It is stamped N & W at the top, indicating it was manufactured specifically for the Norfolk and Western Railway.Patent Information: The text stamped below the railroad name reads PAT. 2040482. This represents a famous padlock mechanism patented by Andrew T. Hagerty for The Adlake Company on May 12, 1936.Dating: Because it utilizes the 1936 patent, these robust steel locks were actively produced and used across various rail lines from the late 1930s through the mid-20th century.
