Yesterday I was called to nursing home where the controlled medicine Cabinet key was jammed half way round. The Cabinet needed to be opened quickly so the residents could have their medicine at the right time. I opened the Cabinet, removed the lock to find a small section of spring had broke away and was stopping the cylinder from working. I made some enquires about a new lock but the cabinet was to old and the lock was obselete. I informed the customer and they are going to have a new cabinet