Key rack

from Wikipedia, the free encyclopedia
Key rack with a variety of different keys and other items.
Hotel key board with one room key and one outside door key per guest room, the mechanical system prevents both keys from being removed at the same time.

A key board (occasionally also: key board ) is a blackboard mostly made of wood , plastic or metal . For the clear storage of keys (or other objects) it contains one or more rows of hooks or just nails or screws  (picture) on which the keys can be hung.

In addition to the clear arrangement, which makes it easier to find a specific key, another advantage is that it can be seen at a glance whether all keys are present or whether some are missing or in use.

If, unlike with the key holder, keys are not kept open but, for example, in a lockable box, then one speaks of a key box or a key depot .

Key room

Such large keyboards are often located in a separately secured key room , here in the former NATO bunker of the Northern Army Group in Cannerberg in the Netherlands (near Maastricht ).

Factory halls or bunker systems , and also large warships , often have a mostly separately secured room , called a key room , in which the individual keys required for the system are centrally stored and safely guarded . Access to the key room is usually subject to strict controls and is only permitted to a limited group of people who must have the appropriate access authorization .

railroad

Under simple operational conditions, a key board can be used in train stations to secure train journeys . To do this, the dispatcher must check whether all the keys required for the route are on the key board before authorizing a train journey. Key racks therefore represent a non-technical form of key dependency. Special holders on the key racks ensure that only the right key can be hung in the right place. Furthermore, the areas behind the keys are marked in red so that a missing key can be recognized immediately. Since there is no technical signal dependency on keyboards , key works were developed to compensate for this disadvantage.

Web links

Commons : key board  - collection of pictures, videos and audio files

Individual evidence

  1. ↑ Explanation in the dictionary on the key holder
  2. ↑ Victor von Röll : Switch locking devices . In: Encyclopedia of Railways . tape 10 , 1912 ( zeno.org ).
  3. ^ Ulrich Maschek: Securing rail traffic . 3. revised u. exp. Edition Springer Vieweg, Dresden 2015, ISBN 978-3-658-10757-4 .