Butterworth on dating
Granville Woods prevented railway accidents and saved countless lives by inventing the train telegraph (patented in 1887), which allowed communication to and from moving trains? The earliest patents for train telegraphs go back to at least 1873.Lucius Phelps was the first inventor in the field to attract widespread notice, and the telegrams he exchanged on the New York, New Haven & Hartford railroad in January 1885 were hailed in the Feb.Unfortunately, some of the errors and exaggerations have acquired an illusion of credibility by repetition in mainstream outlets, especially during Black History Month (see examples for the traffic light and ironing board). The first known traffic signal appeared in London in 1868 near the Houses of Parliament.When myths go unchallenged for too long, they begin to eclipse the truth. Although this page does not cover every dubious invention claim floating around out there, it should at least serve as a warning never to take any such claim for granted. Designed by JP Knight, it featured two semaphore arms and two gas lamps.Further development of truck refrigeration was more a process of gradual evolution than radical change. Many of the 361 patents he accumulated during his career were for air brake variations and improvements, including his first "automatic" version in 1872 (US #124404). In 1911 he published the formulae that became the scientific basis for air conditioning design, and four years later formed the Carrier Engineering Corporation to develop and manufacture AC systems. Of the hundreds of inventors granted patents for early airship designs and modifications, few succeeded in building or flying their craft.There doesn't appear to be any record of a "Pickering Airship" ever getting off the ground.Evidence of modern peanut butter comes from US patent #306727 issued to Marcellus Gilmore Edson of Montreal, Quebec in 1884, for a process of milling roasted peanuts between heated surfaces until the peanuts reached "a fluid or semi-fluid state." As the product cooled, it set into what Edson described as "a consistency like that of butter, lard, or ointment." In 1890, George A. Louis, manufactured peanut butter and sold it out of barrels. Carver's work to improve regional farming practices was not of pioneering scientific importance and had little demonstrable impact.
New York City traffic towers began flashing three-color signals also in 1920. Research by Barry Mackintosh, who served as bureau historian for the National Park Service (which manages the G. Carver National Monument), demonstrated the following: Most of Carver's peanut and sweet potato creations were either unoriginal, impractical, or of uncertain effectiveness.
Elijah Mc Coy revolutionized industry in 1872 by inventing the first device to automatically oil machinery? The phrase "Real Mc Coy" arose to distinguish Elijah's inventions from cheap imitations? The oil cup, which automatically delivers a steady trickle of lubricant to machine parts while the machine is running, predates Mc Coy's career; a description of one appears in the May 6, 1848 issue of Scientific American. Robertson of the US army preserved blood in a citrate-glucose solution and stored it in cooled containers for later transfusion. By the mid-1930s the Russians had set up a national network of facilities for the collection, typing, and storage of blood.
The automatic "displacement lubricator" for steam engines was developed in 1860 by John Ramsbottom of England, and notably improved in 1862 by James Roscoe of the same country. Bernard Fantus, influenced by the Russian program, established the first hospital blood bank in the United States at Chicago's Cook County Hospital in 1937.
Since many of the authors have little interest in the history of technology outside of advertising black contributions to it, their stories tend to be fraught with misunderstandings, wishful thinking, or fanciful embellishments with no historical basis.
The lack of historical perspective leads to extravagant overestimations of originality and importance: sometimes a slightly modified version of a pre-existing piece of technology is mistaken for the first invention of its type; sometimes a patent or innovation with little or no lasting value is portrayed as a major advance, even if there's no real evidence it was ever used.Black Invention Myths Return to Home Page Perhaps you've heard the claims: Were it not for the genius and energy of African-American inventors, we might find ourselves in a world without traffic lights, peanut butter, blood banks, light bulb filaments, and a vast number of other things we now take for granted but could hardly imagine life without.