Jacob Perkins

Jacob Perkins

male, deceased (1849)
1d black, postage stamp, uniflowsteamengine, physics, Goldsmith, patent…steam engine, uniflow engine
Jacob Perkins (9 July 1766 - 30 July 1849) was an American inventor, mechanical engineer and physicist born in Newburyport, Massachusetts, and was...
Johann Stumpf

Johann Stumpf

male
uniflowsteamengine, Charlottenburg, steam engine, German, Charlottenberg Technical College, engineer
Johann Stumpf of the Charlottenburg Technical College in Berlin is best known for popularising the uniflow steam engine, in the years around 1909,...