Night Latch Locks.

Description

A night latch (or night-latch or nightlatch) is a lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. “secure”) side of the door by a knob.

Night latches are usually rim locks and are available as deadlocking (automatically locks once shut) and non-deadlocking versions.

Historically, such locks were intended for use at night-time, hence the name. 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.

What is a Night Latch (commonly referred to as a “Yale Lock”)

A Night Latch (Yale Lock) is a lock commonly found on home front doors; they are mounted to doors that open inwards and mounted to the inner surface of the door.  When the door is closed the night latch automatically latches the door shut.  

The door can be kept from latching closed by keeping the door ‘on the latch’, a phrase you may have heard of.

Night Latches are very simple security they are very easy to use, open the door with a key and shut the door behind you.