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2. Lever tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Lever_tumbler_lock

   The Chubb detector lock is a variation of the lever lock which was designed to detect and prevent picking attempts. Lever locks can be drilled, but usually a template or stencil is required to mark the drilling point, as the lock mechanism is commonly mortised into the door and so it is harder to determine the point at which to drill.

3. Rekeying - Wikipedia

   en.wikipedia.org/wiki/Rekeying

   Locks are usually re keyed to build master-key systems, make a set of locks share a common key, or to eliminate compromised keys. [2] [3] [4] Sometimes worn pins are replaced with new pins if the old pins become too short to reach the shear-line. [5] The shear-line is the thin line shared by the lock plug and its cylindrical housing. If a pin ...

4. Master keying - Wikipedia

   en.wikipedia.org/wiki/Master_keying

   The differences are in the locks the key will operate. These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the change key), which cannot operate any of the others in the set, and the master key, which operates all the locks in the set. [1] Locks that have master keys have a second set ...

5. Glossary of locksmithing terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_locksmithing_terms

   In pin tumbler locks, the series of key cuts on a key causes the pins to line up at the shear line or gate so the lock will open. In warded locks, the key cuts bypass the wards so the key can push or pull the bolt. [6] Key pin In a pin tumbler lock, the key pin is in contact with the key. It has varying lengths, corresponding to the key's ...

6. Best Lock Corporation - Wikipedia

   en.wikipedia.org/wiki/Best_Lock_Corporation

   In addition to its associated commercial and architectural primary hardware components - such as locksets, padlocks, specialty locks and accessories [2] - Best Access is primarily known for its "small format" interchangeable cores, which were introduced under Frank Best's direction in the 1960s as a replacement for the removable core keying configuration that he had first developed in 1919.

7. Chubb detector lock - Wikipedia

   en.wikipedia.org/wiki/Chubb_detector_lock

   A Chubb detector lock is a lever tumbler lock with an integral security feature, a re-locking device, which frustrates unauthorised access attempts and indicates to the lock's owner that it has been interfered with. When someone tries to pick the lock or to open it using the wrong key, the lock is designed to jam in a locked state until ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Locksmithing - Wikipedia

   en.wikipedia.org/wiki/Locksmithing

   Harry Soref founded the Master Lock Company in 1921 and patented an improved padlock in 1924 with a patent lock casing constructed out of laminated steel. Linus Yale Sr. invented a pin tumbler lock in 1848. Linus Yale Jr. improved upon his father's lock in 1861, using a smaller, flat key with serrated edges that is the basis of modern pin ...