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Overview
A safe is a secure lockable box used for securing valuable objects against theft or damage. A safe is usually a hollow cuboid or cylinder, with one face removable or hinged to form a door. The body and door are usually cast from a metal such as steel.
Specifications for safes include some or all of the following parameters:
- Burglar-resistance
- Fire-resistance
- Environmental resistance (e.g. to water or dust)
- Type of lock (e.g. combination, key, time lock, electronic locking)
- Location (e.g. wall safe, floor safe)
In 1835, Charles and Jeremiah Chubb took out their first patent for a burglar-resisting safe, although it is possible that safes were made by the firm before this date as the company Chubb Safes began designing safes and locks in 1818. www.chubbsafes.com
Opening a safe without access to the key or knowledge of the combination is known as safe-cracking. This is a popular theme in heist films.
A diversion safe or hidden safe is a safe that is made from an otherwise ordinary object such as a book, a candle, a can, or even a wall outlet plug. Valuables are placed in these hidden safes, which are themselves placed inconspicuously (for example, a book would be placed on a book shelf).
Classifications of Safes
Safes are rated into three classifications, as defined by the Underwriters Laboratories, or the UL. The rates determine how fire-resistant a safe is.
- Class C -- Protects paper documents for up to 1 hour at temperatures up to 1700°F
- Class B -- Protects paper documents for up to 2 hours at temperatures up to 1850°F
- Class A -- Protects paper documents for up to 4 hours at 2000°F
For most residential fires, a Class B or C safe is fine for protecting irreplaceable papers.[1]
Further reading
- LOCKS, SAFES, AND SECURITY: An International Police Reference, published by Charles Thomas Publishers, Springfield, Illinois, United States. (2000) ISBN 0398070792 (See http://www.security.org/ for more details).
See also
References
- ^ "Buying a Safe", Home Security Information, July 16, 2006.
1 Information on this page is attributed to Wikipedia, the free encyclopedia