Today in History – February 18, 1901 – First vacuum cleaner patented by Hubert Cecil Booth, an English structural engineer. This design had the disadvantage that it had no way to collect the dust and never became a commercial success. In 1907, James Spangler, a janitor working in Canton, Ohio, was not aware of this [...]

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Today in History – February 13, 1959 – the first Barbie doll goes on sale. Barbie’s inventor, Ruth Handler, was inspired by seeing that her daughter, Barbie, and her girl friends enjoyed playing with adult female dolls, but most dolls at the time were baby dolls. Handler created 3D models of dolls that she thought [...]

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Today in History – February 2, 1897 – Ice cream scoop patented by Alfred L. Cralle, the first African-American in Pittsburgh to receive a patent. His patent became the model for ice cream scoops in households soon after and the basis for many scoops today. Cralle was born in Lunenberg County, Virginia on September 4, [...]

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Today in History – February 1, 1972 – First scientific hand-held calculator, the HP-35, introduced for $395. I was an undergraduate in engineering when the HP-35 was released. I couldn’t afford to buy one and stuck with my slide rule. But the next year, I gave in and bought the next model, the HP-45 and [...]

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Today in History – December 13, 1928 – Today is Clip-on Tie Day. That’s right, but I couldn’t find out who invented it. Does anyone know. This fine fashion accessory often gets a bad wrap. People belittle it as the tie for people that don’t know how to tie a tie themselves. If you are [...]

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