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Again, the term refers to the lock mechanism, so a lock can be both a mortise lock and a lever tumbler lock. In the modern lever tumbler lock, the key moves a series of levers that allow the bolt to move in the door. [5] Pin tumbler lock, commonly used for mortise locks in the US. The next major innovation to mortise lock mechanisms came in 1865.
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The RussLock (953L) debuted in 2000. This pattern features a liner lock and a gimped lever for convenient one-hand opening. The RussLock was inspired by the Jack Knife (028), a pattern that has been retired for over 40 years. It was designed by the late Case master knifemaker Tommy Hart, who named it after William Russell (Russ) Case.
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 ...
The lock housing is the part of the lock that does not move when the lock is opened. It is responsible for transferring the action of the key to the bolt. [7] Master pin In a pin tumbler lock, a master pin is an optional, usually short, disk-like pin placed between the top and bottom pins. Its purpose is to allow two differently-cut keys to ...
Keys for some types of warded locks often have a characteristic symmetrical shape. The one on the right is a skeleton key. A warded lock (also called a ward lock) is a type of lock that uses a set of obstructions, or wards, to prevent the lock from opening unless the correct key is inserted. The correct key has notches or slots corresponding to ...
In such cases, other options are better. Some articles, such as Halley's Comet, have a naming or pronunciation section that covers pronunciation explicitly. In other cases the pronunciation is given in the lead, but in a second dedicated sentence, leaving the first sentence unencumbered to define the term. [example needed]