page_title: Joseph Bramah
section_title: Bramah Locks company
hierarchical_section_title: Joseph Bramah / Bramah Locks company
caption_attribution_description: English: The Crystal Palace from the northeast during the Great Exhibition of 1851.
context_page_description: Joseph Bramah, born Stainborough Lane Farm, Stainborough, Barnsley Yorkshire, was an English inventor and locksmith. He is best known for having invented the hydraulic press. Along with William George Armstrong, he can be considered one of the two fathers of hydraulic engineering.
context_section_description: After attending some lectures on technical aspects of locks, Bramah designed a lock of his own, receiving a patent for it in 1784. In the same year he started the Bramah Locks company at 124 Piccadilly, which is today based in Fitzrovia, London and Romford, Essex.
  The locks produced by his company were famed for their resistance to lock picking and tampering, and the company famously had a "Challenge Lock" displayed in the window of their London shop from 1790 mounted on a board containing the inscription:
  The artist 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 over 16 days.
  The Challenge Lock is in the Science Museum in London. An examination of the lock shows that it has been rebuilt since Hobbs picked it. Originally it had 18 iron slides and 1 central spring; it now has 13 steel slides, each with its own spring.
  Bramah received a second patent for a lock design in 1798.
caption: The Great Exhibition 1851
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