A Cleverly Designed Automatic Candle Extinguisher From 1841
Rescue and Restore demonstrated how a cleverly designed automatic candle extinguisher from 1841 works to snuff out a candle before it burns away.
When the candle burns down to a desired level the jaws spring shut and extinguish the flame.
They also showed how a similar Swedish candle saver works to extinguish a candle using a different type of design.
“Candle saver” device that automatically stops a candle from burning itself down.
via Boing Boing