Franklin stove

The Franklin stove is a metal-lined fireplace named after Benjamin Franklin, who invented it in 1742.^[1] It had a hollow baffle near the rear (to transfer more heat from the fire to a room's air) and relied on an "inverted siphon" to draw the fire's hot fumes around the baffle.^[2] It was intended to produce more heat and less smoke than an ordinary open fireplace, but it achieved few sales until it was improved by David Rittenhouse. It is also known as a "circulating stove" or the "Pennsylvania fireplace".

^ L.W. Labaree, W. Bell, W.B. Willcox, et al., eds., The Papers of Benjamin Franklin (New Haven, Connecticut: Yale University Press, 1959–1986), vol. 2, page 419.
^ Samuel Y. Edgerton, Jr., "Supplement: The Franklin Stove" in I. Bernard Cohen, Benjamin Franklin's Science (Cambridge, Massachusetts: Harvard University Press, 1990), pages 204–206.

[1] L.W. Labaree, W. Bell, W.B. Willcox, et al., eds., The Papers of Benjamin Franklin (New Haven, Connecticut: Yale University Press, 1959–1986), vol. 2, page 419.

[2] Samuel Y. Edgerton, Jr., "Supplement: The Franklin Stove" in I. Bernard Cohen, Benjamin Franklin's Science (Cambridge, Massachusetts: Harvard University Press, 1990), pages 204–206.

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