Franklin stove

Wiktionary

1. n. A metal-lined fireplace with a hollow baffle and a flue acting as an inverted siphon, intended to produce more heat and less smoke than an ordinary open fireplace.

GNU Webster's 1913

1. A kind of open stove introduced by Benjamin Franklin, the peculiar feature of which was that a current of heated air was directly supplied to the room from an air box; -- now applied to other varieties of open stoves.
2. n. See in the Vocabulary.