![]() Purvis invented the pocket fountain pen, with its own ink reservoir that consistently fed ink to the pen’s point. Murray patented 8 inventions of agricultural implements. Ferrell obtained 12 patents for improvements in valves for steam engines. ![]() JACKSON invented a heat apparatus, a gas burner, an electrotyper’s furnace, a steam boiler, a trolley wheel controller, a tank signal, and a hydrocarbon burner system. Davidson invented a mechanical tabulator or adding machine Robert A. AB Albert invented a cotton-picking machine. JH and SL Dickinson were granted 12 patents for mechanical appliances used in player piano machinery. The Enslaved Joe Anderson assisted McCormick in developing the harvesting machine. ![]() Here and there a USA bondsman, in trying to overcome the drudgery of slavery, became an inventor. Last Updated on Maby Paulette Brown-Hinds
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