Self-Closing Device 4 : A mechanism that ensures that a door or other closure, when opened, will return to the closed position. See also: Automatic Closing Device, Self-Closing, Self-Closing Door
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}