Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,404 pages of information and 233,863 images on early companies, their products and the people who designed and built them.


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1903 Granted patent for the world's first liquid ring vacuum pump.

1906 A smaller Elmo vacuum pump was used in Germany's first vacuum cleaner.

1926 Siemens-Schuckert Co offered the Elmo self-priming pump

At some point was acquired by Siemens

1963 Introduced the first side channel blower which revolutionized the vacuum and pressure market.

2000 Siemens spun-off its liquid ring pumps and compressor business as elmo vacuum technology.

2002 Nash Engineering merged with elmo Vacuum Technology, which brought together both liquid ring vacuum pump technologies to become the world's largest manufacturer of liquid ring pumps and compressors, Nash elmo.

See Also


Sources of Information

  • [1] Gardner Denver website