Years ago, the only way to get power was from a dangling ceiling socket - there were few, if any wall outlets. So if you wanted to iron clothes or listen to an AC powered radio, you needed one of those "screw-plug" adapters.
They also have adapters shaped like a "Y" so you can have a bulb and adapter together, or 2 bulbs.
I remember my in-laws house where each room had only a single green twisted cord hanging down form the ceiling.
|