Crafts periods. Dating from 1607 to the 1920’s (over three hundred years), these locks in various forms were widely used.
There are many resources to replace these mechanisms when they fail; however, I have found that finding suitable parts that actually fit is difficult. To be honest, these mechanisms are fairly simple and repair can be done by just about anyone with a modest
level of skill.
Removal: Removal of the mortise lock from the door is easy. Simply remove the two screws on the faceplate holding the mechanism in place.
Disassembly: The first step in the process is to find the machine screw that holds the cover plate in position and remove it. I am sure that there may be manufacturers that may have used a different (2, 3 or more screws) configuration, but I have never seen them differ from this:
actions should be taken. The most common reasons these mechanisms fail:
- PAINT, PAINT, and did I mention PAINT? More often than not, at some point in
history, someone painted over the mortise lock rendering it unusable. A simple cleaning of the parts in paint stripper and mineral spirits usually does the trick.
- Broken springs. Suitable replacements can usually be found at a hardware store or
online dealers abound.
Remove the springs first. In my example, there are three. Once the springs are removed
the rest of the parts pretty much fall out so be careful. When you remove, the parts make sure to lay them out so you can remember how they go back.
Reassembly is reverse of removal. Just be sure the leaf type retainer springs are placed exactly where they should be.