A Franklin stove

The Franklin stove (named after its inventor, Benjamin Franklin) is a metal-lined fireplace with baffles in the rear to improve the airflow, providing more heat and less smoke than an ordinary open fireplace. It is also known as the circulating stove. Although in current usage the term "stove" implies a closed firebox, the front of a Franklin stove is open to the room. From [1], a National Park Service web page. ... From [1], a National Park Service web page. ... Benjamin Franklin (January 17 [O.S. January 6] 1706 – April 17, 1790) was one of the most well known Founding Fathers of the United States. ... A natural gas fireplace with a burning fire. ... Look up Baffle in Wiktionary, the free dictionary. ...

While Franklin is often credited with its invention, some historians believe the circulating stove was actually invented 70 years prior to Franklin's experimentation with stoves. The metallurgy at the time, however, required that it be made of cast iron, which cracked when fired. This caused smoke to pass through the cracks and into the room: as a result, the original inventors did not patent or sell their device. Franklin designed a similar stove with more advanced metallurgy and was successful in making it work—at some point in 1742, according to his own account. Metallurgy is a domain of materials science and of materials engineering that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their mixtures, which are called alloys. ... A patent is a set of exclusive rights granted by a state to a patentee (the inventor or assignee) for a fixed period of time in exchange for the regulated, public disclosure of certain details of a device, method, process or composition of matter (substance) (known as an invention) which...

In Franklin's original design the opening to the flue (behind the baffles) was in the floor of the stove, requiring the hot exhaust gases to flow downward before going up the chimney. However, others soon improved the design and Franklin himself made a much improved version with better fume extraction and a provision for the use of coal, sometime in the 1770s. A flue is a pipe or channel for conveying exhaust gases from a fireplace, furnace, boiler, or generator. ...

Franklin placed the design in the public domain, as he did with all of his other inventions, and refused offers by others to obtain patents for him. He clearly indicated in his writings his preference in such matters: "... as we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously." The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...

Tales of the origins of the stove mention Franklin's desire to attain a greater degree of domestic comfort, fireplaces having then too many inconveniences. Historians note that, at the time, Philadelphia, where Franklin lived, was probably one of the biggest cities in North America and that wood was becoming scarce and costly, given the ever rising demand and the fairly poor transportation systems. His stove was described by his contemporaries as giving off twice the amount of heat as a normal fireplace for a third of the wood consumed. This article is becoming very long. ... World map showing North America A satellite composite image of North America. ...

The stove became very popular and gradually replaced open fireplaces. To this day, most American fireplaces are box-shaped, similar to the Franklin stove. The exception is the Rumford fireplace, developed by Benjamin Thompson. The Rumford fireplace is a tall, shallow fireplace designed by Count Rumford, born Benjamin Thompson in Woburn, Massachusetts, an Anglo-American physicist who was known for his investigations of heat. ... Benjamin Thompson. ...