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2. Schlage - Wikipedia

   en.wikipedia.org/wiki/Schlage

   However, Schlage's key invention was the bored cylindrical lock, which evolved through several iterations, including a 1917 filing for a mortise mechanism which locked when the knob was tilted, [5] one in April 1920 for a lock requiring one hole and a surface rabbet rather than a complex mortise pocket, [6] and another the same year in October ...

3. Interchangeable core - Wikipedia

   en.wikipedia.org/wiki/Interchangeable_core

   The electronic lock core is the same as the mechanical lock core, which can be directly modified into the existing mechanical lock. Different from the mechanical lock core, the electronic lock core integrates a miniature electronic single-chip microcomputer , there is no mechanical keyhole, and only three metal contacts are retained. [ 4 ]

4. 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 [3] in 1923 [4], as an innovation on a patent filed in 1920 [5] for a lock whose installation required a face bore and surface rabbet, simplifying door preparation compared to a traditional mortise lock.

5. Walter Schlage - Wikipedia

   en.wikipedia.org/wiki/Walter_Schlage

   The Schlage Lock Company was incorporated with a starting capital of $30. [7] In the same year, he applied for a patent for a lock that could be drilled into a door with only two holes. [ 3 ] [ 8 ] This new cylindrical lock had a single plate, serving as both escutcheon and striker plate, wrapping around the door's edge.

6. Does your car key have a twin? - AOL

   www.aol.com/news/2015-07-07-does-your-car-key...

   In fact, often a store will keep several locks on the shelf with identical keys for the convenience of customers who want multiple locks opened by the same key. Locksmith Brandt said rekeying the ...

7. Mortise lock - Wikipedia

   en.wikipedia.org/wiki/Mortise_lock

   The term "warded lock" refers to the lock mechanism, while the term "mortise lock" refers to the bolt location. Warded locks contain a series of static obstructions, or wards, within the lock box; only a key with cutouts to match the obstructions will be able to turn freely in the lock and open the latch. [4]