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2. Glossary of locksmithing terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_locksmithing_terms

   A strike plate is a metal plate affixed to a doorjamb with a hole or holes for the bolt of the door. When the door is closed, the bolt extends into the hole in the strike plate and holds the door closed. The strike plate protects the jamb against friction from the bolt and increases security in the case of a jamb made of a softer material (such ...

3. Electric strike - Wikipedia

   en.wikipedia.org/wiki/Electric_strike

   In this configuration, applying electric current to the strike will cause it to lock. It operates the same as a magnetic lock would. If there is a power failure, the door opens merely by being pushed or pulled. A new trend is a strike that is quickly field-installation reversible from fail safe to fail secure (and back again if needed).

4. Firing pin - Wikipedia

   en.wikipedia.org/wiki/Firing_pin

   In firearms terminology, a striker (or striker mechanism) derives the impact force to strike the primer from a spring acting directly upon the firing pin – similar to a crossbow, where the striker (firing pin) is like the crossbow bolt (arrow). A striker mechanism is very common in bolt-action firearms but not to the exclusion of hammer ...

5. Latch - Wikipedia

   en.wikipedia.org/wiki/Latch

   A deadlocking latch bolt (deadlatch) is an elaboration on the latch bolt which includes a guardbolt to prevent "shimming" or "jimmying" of the latch bolt. When the door is closed, the latch bolt and guardbolt are retracted together, and the door closes normally, with the latch bolt entering the strike plate. The strike plate, however, holds the ...

6. Crash bar - Wikipedia

   en.wikipedia.org/wiki/Crash_bar

   A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.

7. Dorman Long - Wikipedia

   en.wikipedia.org/wiki/Dorman_Long

   The Dorman Long tower was built from 1955 to 1956 as a coking plant for steel production. [15] The tower was an early example of brutalist architecture . [ 41 ] It was scheduled to be demolished in 2021 due its poor state of repair [ 23 ] and granted Grade II listed status, in an emergency listing by Historic England on 10 September 2021. [ 15 ]