1.Previous
3.Next

who can make an instrument that will pick or open this lock shall receive 200 guineas the moment it is produced.The challenge stood for over 67 years until, at the Great Exhibition of 1851, the American locksmith Alfred Charles Hobbs was able to open the lock and, following some argument about the circumstances under which he had opened it, was awarded the prize. Hobbs' attempt required some 51 hours, spread

1.Previous
3.Next