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A night latch (or night-latch or nightlatch) is a lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. "secure") side of the door by a knob. [1] [2] [3]
This example has two bolts: a sprung latch at the top, and a locking bolt at the bottom. Right: the box keep, installed in the doorjamb. A mortise lock (also spelled mortice lock in British English ) is a lock that requires a pocket—the mortise —to be cut into the edge of the door or piece of furniture into which the lock is to be fitted.
Metal fire-resistance rated door with a lockset consisting of a locking latch bolt operated by lever handle with an escutcheon that encompasses the locking mechanism.. A lockset (alternatively lock set) is the hardware and components that make up the locking or latching mechanism that can usually be found on a door or other hinged object but can also include sliding doors and dividers. [1]
In the United States, rim locks and rim latches are often used on wooden screen doors. A rim lock may also be seen on an antique pantry, pie safe, and other cabinets. Some rim lock and latch sets have a shallower backset than does a modern bored cylindrical lock or mortise lock, allowing their use on doors with narrow rails.
Snib A snib is a device to engage or disengage a lock without the use of a key. In Scottish English or Irish English, the word is sometimes used as a synonym for lock. [10] Spool pin A spool pin is a type of security pin used to prevent picking in a pin tumbler lock.
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Animation of a lever tumbler lock mechanism. A lever tumbler lock is a type of lock that uses a set of levers to prevent the bolt from moving in the lock. [1] In the simplest form of these, lifting the tumbler above a certain height will allow the bolt to slide past.