Rim lock

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 required. Most older locks were large, some as big as 40 cm by 25 cm. Most rimlocks used today on exterior doors in the British Isles are night latches.

References

Phillips, Bill (2005). The Complete Book of Locks and Locksmithing. McGraw Hill Professional. ISBN 9780071588966.

Locks, locksmithing & lock picking
Topics	Key control Key relevance Lockout-tagout Master keying Rekeying
Components and hardware	Bitting Interchangeable core Key blank Key code Keyhole Key retainer Lockrod Lockset Bored cylindrical lock Mortise lock Rim lock Single-point locking Three-point locking
Key types	Berlin key Car key Transponder key Skeleton key Smart key
Mechanical locks	Warded lock Pin tumbler lock Cylinder lock Disc tumbler lock Lever tumbler lock Magnetic-coded lock Magnetic keyed lock Padlock Combination lock Rotary combination lock Time-delay combination locks Time lock Tubular pin tumbler lock Wafer tumbler lock
Electronic locks	Electromagnetic lock Electronic lock Electric strike Magnetic-coded lock Keycard lock
Specific lock types	Bicycle lock Bramah lock Chamber lock Chubb detector lock Child safety lock Dead bolt Keycard lock Kensington Security Slot Luggage lock Power door locks Protector lock The Club TSA lock
Lock picking	Lock bumping Locksport Slim Jim Snap gun
Related	Glossary of locksmithing terms Bolt cutter Door chain Exit control lock Famous locksmiths Interlock (engineering) Keychain Key (engineering) Lock manufacturers Lock puzzle Two-man rule
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