Keyless Bakelite Lamp Sockets are a vintage design used on lamps of the early 20th century. Bakelite is an early form of plastic, produced from a synthetic chemical resin. Threaded metal hickey is detachable. Wire attaches to bottom of socket. Keyless design requires separate cord or wall switch.*
Before making any changes to electrical fixtures and/or lamps:
Disconnect plug/wire from the electrical source.
Turning lamp off will not protect you from electric shock.
If you are unsure how to safely proceed contact a licensed electrician.