The Great Exhibition in London in 1851.

History From Slate. “My name is Chubb, that makes the Patent Locks; Look on my works, ye burglars, and despair.”

"They were drawn by a curious invitation: “To witness an attempt to open a lock throwing three bolts, and having six tumblers, affixed to the iron door of a strong room.” The men gathered around the door to a vault, once the repository of records for the South-Eastern Railway. At their center was an unassuming figure, an American named Alfred C. Hobbs, clad in waistcoat and collar. At 11:35 a.m., Hobbs produced a few small tools from his pocket—“a description of which, for obvious reasons, we fear to give” a correspondent for the Times wrote—and turned his attention to the vault’s lock. His heavy brows knitted, Hobbs’ hands flitted about the lock with a faint metallic scratching...."