One possibility is "rim lock": [http://www.houseofantiquehardware.com/rim-lock?GCID=S14464x015&KEYWORD=surface%20rim%20lock%20door&partner=gpc&gclid=CjwKCAjwj8bPBRBiEiwASlFLFU57JxhVyrMSMlhMBuwbm-KN8X2DjRJy7f9Usgd3gXgwEQH8lNINThoCLNQQAvD_BwE][1] [1]: http://www.houseofantiquehardware.com/rim-lock?GCID=S14464x015&KEYWORD=surface%20rim%20lock%20door&partner=gpc&gclid=CjwKCAjwj8bPBRBiEiwASlFLFU57JxhVyrMSMlhMBuwbm-KN8X2DjRJy7f9Usgd3gXgwEQH8lNINThoCLNQQAvD_BwE