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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 ]
The furnace was a center of colonial iron making and is associated with the introduction of the Franklin Stove, and the retreat of George Washington's army following its defeat at the Battle of Brandywine, where they came for musket repairs. Nathanael Greene's company and Washington were both recorded encamping here. [4] [5] [6]
Franklin's friend Kinnersley traveled throughout the eastern United States in the 1750s demonstrating man-made "lightning" on model thunder houses to show a how an iron rod placed into the ground would protect a wooden structure. He explained that lightning followed the same principles as the sparks from Franklin's electrostatic machine.
Benjamin Franklin visited the factory, [16] leaving works and is said to have left a design for a stove called 'Dr Franklin's stove or the Philadelphia stove'. The company produced pig iron throughout the 19th century, together with cast-iron products such as balustrades, fire grates, and the Carron bathtub.
A portrait of Franklin c. 1746–1750, [Note 3] by Robert Feke widely believed to be the earliest known painting of Franklin [69] [70] Join, or Die, a 1754 political cartoon by Franklin, urged the colonies to join the Seven Years' War in the French and Indian War; the cartoon was later resurrected, serving as an iconic symbol in support of the ...
Woods–Evertz Stove Company Historic District, also known as General Wesco Stove Company, is a historic industrial complex and national historic district located at Springfield, Greene County, Missouri. The district encompasses six contributing buildings associated with a large cast iron stove manufacturer.
Franklin stove, originally invented by Benjamin Franklin, is a more efficient type of wood-burning fireplace. It was finicky and never caught on, but many stoves continue to be referred to as "Franklin" stoves. Carl Johan Cronstedt is reported to have increased efficiency of wood-burning stoves by a factor of eight in the mid-18th century.
Electric Motor Chronology Selected Patents 1905, Alfred Zehden German, a feasible linear induction motor described in patent form for driving trains or lifts. U.S. patent 782,312: 1935, Hermann Kemper: German, built a working linear induction motor 1945–1949, Eric Laithwaite: British, first full-size working model of linear induction motor