This Day in Geek History: June 14
1648
Margaret Jones is hanged in Boston for witchcraft in the first such execution for the Massachusetts colony.
1822
Charles Babbage announces his invention of a small mechanical difference engine able to carry out complex operations at a rate of about twelve calculations a minute mechanically in a paper entitled, “Note on the application of machinery to the computation of astronomical and mathematical tables,” which he reads to the Royal Astronomical Society in London, England. In 1823, he will begin constructing an industrial strength calculator, which he will be abandon in 1834 due to a series technical and bureaucratic problems.
1834
The first US patent for a practical underwater diving suit is issued to Leonard Norcross of Dixfield, Maine. Calling it a “Diving Armor,” he designed the airtight leather outfit with a brass helmet connected via a rubber hose to an air bellows pump on a boat. To reduce buoyancy, the feet of the suit are weighted with lead shot. In May 1834, one month earlier, he tested the diving suit in the Webb River. Norcross will later name his son Submarinus in honor of the achievement. The first truly effective diving suit with a pump is attributed to Englishman Augustus Siebe, in 1829.
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