This is a lock with a plate that is screwed into the door jamb. It has hinges on one side and a small metal piece that is then supposed to swing over in front of the door when it is closed. It is then supposed to prevent the door from being opened inward.
I’ve followed the directions but it doesn’t work. The metal piece swings over as it is supposed to, but it doesn’t catch. When I try to open the door the metal piece is pushed aside by the door. There is a little tiny screw I’m supposed to insert “to allow quick emergency door opening,” but I don’t understand how it relates to the operation of the lock.
I hope this description is clear enough. Any help appreciated!