What type of mortice lock is this

[^woody^]

I need to identify what type of lock is needed to achieve this situation.

A modern door with a fashionable long pull handle externally and no lever - just a euro cylinder.

But inside there is a lever!

I can't work out what type of mortice lock it is - as from the outside it suggests just a mortice deadlock and key operated, but on the inside it suggests a mortice sash lock and lever operated!

Outside

Inside

 

[JohnD]

look at the edge of the door. is there a brandname on the fore-end of the lock?

 

[^woody^]

look at the edge of the door. is there a brandname on the fore-end of the lock?

Lol, no I got the photos off the net just to illustrate the situation.

It seems to be a very common thing with contemporary doors, but I can't work out how it works with just a key operated from the outside.

 

[JohnD]

it'll be a deadlocking nightlatch mechanism I expect

there used to be a few lever locks like that, I only know one still marketed, the 3R35. There were some cheaper ones, Union and Wellington did them.

High street banks that still have wooden front doors use that kind of thing.

 

[JohnD]

yes, just goggle "mortice nightlatch"

there seem to be quite a few.

 

[^woody^]

Oh I despair with google sometimes. I've been looking at locks and lock types and for days, and despite putting in certain words and terms to describe what I wanted, Google just tends to throw up the same products and same companies that want to sell me something, and no results from forums or other sources of information.

 

[JohnD]

I still have a 3R35 on my front door.

Also look at "escape locks"

No quite the same thing but can be opened from inside with a knob or handle, but need a key from outside.

 

[CBW]

Yep, looks like a night latch https://www.doorhandlecompany.co.uk...Dk4ZfBOrKOE2dFGMl0d3qdct3B63zUfBoC4O4QAvD_BwE

 

[JohnD]

The listing says "British Standard" but I think that is not true.

 

[CBW]

but I think that is not true.

Why do you think this?

 

[JohnD]

https://www.locksmiths.co.uk/faq/what-are-bs3621-british-standard-locks/