Who Invented The Vacuum Pump . McGaffey called his machine a wood and canvas contraption the Whirlwind. Self-Priming centrifugal pumps were invented in 1935.
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After his death in 1986 the following references were found. One of the first companies to market a self-priming centrifugal pump was American Marsh in 1938. Four years later he conducted his famous Magdeburg hemispheres experiment showing that teams of horses could not separate two hemispheres from which the air had been evacuated.
After his death in 1986 the following references were found.
One of the first companies to market a self-priming centrifugal pump was American Marsh in 1938. In 1879 Thomas Alva Edison 1847 1931 began using vacuum technology to help produce his first lamps. Otto von Guericke invented the first vacuum pump. It was a crude pump with joints kept airtight by water immersion.
