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William B. Purvis (12 August 1838 – 10 August 1914) [1] was an African-American inventor and businessman who received multiple patents in the late 19th-century. His inventions included improvements on paper bags, an updated fountain pen design, improvement to the hand stamp, and a close-conduit electric railway system.
A well-used modern desk-style electric pencil sharpener. The oldest surviving electric pencil sharpener is the Boston Polar Club pencil sharpener, introduced around 1936. [19] Electric pencil sharpeners work on the same principle as manual ones, but one or more flat-bladed or cylindrical cutters are rotated by an electric motor. [16]
Hymen L. Lipman (c. 1817/1823 – November 4, 1893) is credited with registering the first patent for a pencil with an attached eraser on March 30, 1858 (U.S. patent 19,783). Hymen L. Lipman was born March 20, 1817, in either Kingston, Jamaica or in the Bahamas, to English parents.
W.E.B. Du Bois was a sociologist and activist who became the first Black person to earn a doctorate from Harvard University. What did W.E.B. Du Bois accomplish?
During the 1860s, people typically wrote with quill pens and ink even though Dixon introduced graphite pencils in 1829. But the American Civil War created a demand for a dry, clean, portable writing instrument and led to the mass production of pencils. At the time of Dixon's death in 1869, the Joseph Dixon Crucible Company was the largest ...
The first black person on record to have successfully performed pericardium (the sac surrounding the heart) surgery to repair a wound. [191] Williams, Marguerite Thomas: 1895–1991 Geologist: First black person to receive a Ph.D. in Geology Williams, Scott W. 1943– Mathematician [192] Williams, Walter E. 1936–2020 Economist, social scientist
Garrett Augustus Morgan Sr. (March 4, 1877 – July 27, 1963) was an American inventor, businessman, and community leader.His most notable inventions were a type of three-way traffic light, [1] and a protective 'smoke hood' [2] notably used in a 1916 tunnel construction disaster rescue.
By 1911, around age 36, after seven years of low wages as a pencil-sharpener wholesaler, Burroughs began to write fiction. By this time, Emma and he had two children, Joan (1908–1972), and Hulbert (1909–1991). [13] During this period, he had copious spare time and began reading pulp-fiction magazines. In 1929, he recalled thinking that: