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Unjamming old interior 'chub'/mortice lock

418 Views 5 Replies 3 Participants Last post by  Brickcell
Hi there,
So the house I moved into is relatively old and has old style locks for the bedrooms and bathrooms. Some of the locks have been painted over presumably to prevent kids locking themselves into rooms.

The key and keyhole area seems to be fine but it's the lock area itself that won't budge. I've scraped off the paint on one of the locks but only get about half a millimetre - a millimetre range of motion from it when I try to turn the key. Just wondering what the best way to go about this is. I've limited tools as I've just moved in so I've have been scraping away at the perimeter of the chub lock itself in hope it will remove anything blocking it from extruding.

I'll include a picture link below if possible to give you an idea of what I'm working with. Any help would be greatly appreciated.
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Clean out the slot in the heads of those screws and remove them.
Run a utility knife around the outside edges of the metal plate.
Remove the knobs and the whole shaft the knobs the shafts attached to.
Have the end of the door facing you and insert a sturdy screwdriver through the hole the shaft was in and grab the handle and the shaft of the screwdriver and give it a strong sharp pull toward you.
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