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2. Bored cylindrical lock - Wikipedia

   en.wikipedia.org/wiki/Bored_cylindrical_lock

   The modern bored cylindrical lock was invented by the German-born engineer Walter Schlage [4] in 1923 [5], as an innovation on a patent filed in 1920 [6] for a lock whose installation required a face bore and surface rabbet, simplifying door preparation compared to a traditional mortise lock.

3. Tubular pin tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Tubular_pin_tumbler_lock

   A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.

4. Pin tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Pin_tumbler_lock

   Euro profile locks, an example of a cylinder lock. These are commonly found on uPVC doors and commercial buildings where re-keying doors is common. Commonly pin tumbler locks are found in a cylinder that can be easily unscrewed by a locksmith to facilitate rekeying. The first main advantage to a cylinder lock, also known as a profile cylinder ...

5. Schlage - Wikipedia

   en.wikipedia.org/wiki/Schlage

   Schlage (/ ʃ l eɪ ɡ / SHLAYG) [1] [2] is an American lock manufacturer founded in 1920 by Walter Schlage. Schlage was headquartered in San Francisco from its inception until it relocated to Colorado Springs, Colorado, in 1997. Schlage also produces high-security key and cylinder lines Primus, Everest, and Everest Primus XP.

6. Glossary of locksmithing terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_locksmithing_terms

   The plug is the part of a cylinder lock which is designed to turn when a key is inserted. Plug follower A plug follower is a device used in the assembly and disassembly of locks; it is a solid cylinder that is used to push the plug out of the lock, while preventing the springs and driver pins from moving. [8] Relocking device in a safe ...

7. Mortise lock - Wikipedia

   en.wikipedia.org/wiki/Mortise_lock

   In most parts of the world, mortise locks are found on older buildings constructed before the advent of bored cylindrical locks, but they have recently become more common in commercial and upmarket residential construction in the United States. [citation needed] The design is widely used in domestic properties of all vintages in Europe.