I'm converting one of the rooms in my 1840 house into an office. The thing is I have 5 kids and need to be able to lock the door so I can have some level of quiet. I also don't want the kids tinkering around in there when I'm not there. (Sharp tools and stuff)
The kicker is I want it to a lock that can be opened on both sides given a key or code. The door is only about 1-1.25 inch thick of solid wood with only an iron latch.
I've been googling and have not found anything that fits the bill. I think I'm looking for a sliding bolt style lock that can be opened from either side. I'm open to other ideas too if they fit the need.
Best Answer
Why not consider a rim lock. This is a surface mounted lock and door latch that was typical in 19th century houses.
It is mounted on the inside surface and requires only two small holes drilled through the door - one for the knob spindle and one for the key.
There are old ones around, but you can find reproductions that work the same way.
Images and links are illustrative only, not an endorsement of goods or sources