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  2. Door handle - Wikipedia

    en.wikipedia.org/wiki/Door_handle

    This is an accepted version of this page This is the latest accepted revision, reviewed on 16 February 2025. Device to open or close door Various examples of door handles throughout history A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including: exterior doors of residential and commercial buildings, internal doors ...

  3. Night latch - Wikipedia

    en.wikipedia.org/wiki/Night_latch

    Historically, such locks were intended for use at night-time, hence the name. [5] The keyless egress that they offer is a valuable fire safety measure, but may be a security risk if breaking a glass panel (usually in the door) or a nearby small window allows an intruder to reach the knob inside and open the door from the outside.

  4. Rim lock - Wikipedia

    en.wikipedia.org/wiki/Rim_lock

    An antique rim lock installed on a door. A rim lock is a locking device that attaches to the surface of a door. [1] It is the oldest type of lock used in the United Kingdom and Ireland. It is of a basic design using (usually) a single lever and a sliding bolt. Wards can be used for additional security. They are not used where high security is ...

  5. Locking pliers - Wikipedia

    en.wikipedia.org/wiki/Locking_pliers

    Locking pliers remain clamped to an object without requiring continuous pressure on the handles based on the "over-center" principle. After being properly adjusted using a threaded screw, the pliers are brought to bear by cam action. In the process of being closed on an object the mechanism passes through a point of maximum tightest clamping ...

  6. Bitting (key) - Wikipedia

    en.wikipedia.org/wiki/Bitting_(Key)

    Bitting is the depth of key cuts on a cylinder key for a pin tumbler lock, often expressed as a number. Bitting also refers to the combination of key cuts on a bit key for a warded lock or lever tumbler lock. The exact geometry of modern keys is usually described by a code system. [1]

  7. Pin tumbler lock - Wikipedia

    en.wikipedia.org/wiki/Pin_tumbler_lock

    The goal once having created the hole is to reach with mole grips deep past any sacrificial lines of an inferior euro cylinder lock. The weak point of any euro lock is the centre screw hole which essentially holds the lock in place but also above this centre screw hole is the euro locks cam switch which is the switch that locks and unlocks the ...