A Bramah customs sealed padlock with
Gottleib's patent improvement, original key, dating from the
patent was granted in 1829 and the records available for research
tell us that several thousand Bramah locks were converted to
worked as a locksmith for the Excise prior to 1829. The Excise
required a lock that was unpickable and tamperproof. Gottleib's
design did both,that is until a revenue officer Thomas Smith,
evolved a foolproof method to pick this lock. Uproar followed
and Gottleib modified his lock and by 1834 the lock defied all
attempts to pick it. Thomas Smith was promoted to a "footwalk"
for his services-a privileged position at this time.