国立アメリカ歴史博物館のインスタグラム(amhistorymuseum) - 1月9日 20時01分

2018 resolution: Save some cash, maybe by saving on our utility bills? We'll keep an eagle eye on our thermostats. In the early 20th century, most Americans heated their homes with manually operated furnaces down in the basement, where they'd have to stoke the coal. Albert Butz's "damper-flapper" system was patented in 1886 and allowed home owner to set the thermostat to a certain temperature. That would would open a damper to the furnace, increasing the fire and heating the house.
Later innovations allowed for the thermostats to use gas lines, incorporate electricity, turn on at a set time, include heating and cooling in one mechanism. Today, they even connect to the internet.

From left to right: Williams Oil-O-Matic Thermostat made in Illinois in the 1930s, Penn Electric Switch Company Thermostat made in Iowa in the 1930s, and the Time-O-Stat 8-Day Thermostat by the Time-O-Stat Controls Corporation of Elkhart, Indiana, around 1932.
#MoneySaving #UtilityBills #HistoryResolution #NewYearsResolution #2018Goals #Innovation

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