We have several very simple 120+ year old interior mortise locks that we would lock to convert from skelaton key to thumb turn (since they are on bathroom doors!).
I have taken the locks apart and they have very simple internal mechanisms. It seems that I would need to replace the lever that is activated by the skelaton key with one that has a standard square hole in the middle so that I could insert a thumb turn.
I have previously tried adding washers to a skelaton key and putting those behind the faceplate to keep the skelaton key in place, but it doesn't give a good solution.
Anybody know how or whom I might use to do this conversion? (note it is an old locks so I assume it will need some combination of welding or custom fabrication)
The lock itself has a 2 1/2" backset with 2 1/4" between the spindle and the keyhole.
Thanks