Episode 3 of 3

1818 Locksmith Convict Test

When
1818
Where
Portsmouth Docks
Part of
Jeremiah Chubb patents the Chubb detector lock

A locksmith convict on a prison hulk in Portsmouth Docks failed to pick the Chubb lock, proving its security against unauthorized access.

A locksmith who was a convict aboard a prison hulk in Portsmouth Docks was given the Chubb lock. He was promised a free pardon from the government and £100 from Jeremiah Chubb if he could pick the lock. The locksmith failed, demonstrating the lock's effectiveness.

Sources

  1. Chubb detector lock Wikipedia, revision of 2025-07-04

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.