Try loosening the flathead screw on the base of your doorknob.
How to fix a mortise door lock.
Loosen the setscrew securing either one of the doorknobs to the square knob shaft.
Loosen the set screw.
Place strips of tape around the exterior and interior patched holes to protect the finish on the door.
Notice the set screw on.
Meet the mortise lock and door knobs.
The knob and or the spindle may.
1 loosen the setscrew on the knob s shank.
If the latch sticks the knob may be screwed on too tight.
If the thumbturn for the deadbolt is causing the bolt to jam and lock you out when it s in the wrong position you may.
If these screws have come loose or stripped out of the wood then the lock itself may be moving within the door causing the looseness.
Remove a knob from the spindle.
Lightly sand the patched areas.
Do the same for the recessed patch on the edge of the door.
How to fix antique mortise door mechanisms 1.
You can tighten a simple interior mortise lockset like the one shown at left as follows.
Soften the paint.
Tighten these back down and use a toothpick in the screw hole if has gotten hollowed out too big to accept the screw.
From there you can either widen the hole both of the wood and metal or you can unscrew the strike and re secure it in the proper position.
2 hold the knob on the other side of the door and turn the loose knob clockwise until it fits snugly.
Cleaning and repairing an antique mortise door lock.
Examine the mortise lock.
Today we are discussing how to remove an entry mortise lock with a thumb latch on the exterior instead of a regular knob.
The easiest fixes are.
3 if this does not help remove the knob.
Then on the faceplate loosen the setscrew opposite the lock cylinder and unscrew the lock cylinder.
By shutting your door you can mark the point on the door frame that latch is coming in contact with.
If you have questions please ask.
This mortise lock set is installed in a 1930 colonial in the boston area.
Most mortise locks are mounted with screws driven through the face plate into the door edge.
The fix a short term fix is to move the strike plate to align better with the stuck door latch.