A dissertation on the construction of locks
Subtitle: containing first, reasons and observations, demonstrating all locks, which depend on fixed wards, to be erroneous in principle, and defective in security. Secondly, a specification of a new and infallible principle, which, possessing all the properties essential to security, will be a certain protection, (as far as a lock is concerned), against thieves of all descriptions.
By: By Joseph Bramah ...
Edition: 2d ed.
Publisher: Printed for the author and sold by J. Taylor
Published: 1815
Place of publication: London
Language: eng
Number of pages: 34
Subjects: Locks and keys.