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Company Profile

Davenport motor
Photo courtesy of Smithsonian Institute
HEROLD & MIELENZ, INC. didn't invent the first electric motor, but our great, great, great grandfather did! The Mielenz family is a direct descendant of Thomas Davenport, credited with inventing the first commercially successful electric motor in 1834.

A blacksmith in Brandon, Vermont, Davenport began experimenting with electromagnets in 1831 and by 1834 he had constructed his first electric motor, pictured above. Operated by battery, Davenport used his electric motor to propel a small car around a circular track, the first recorded instance of an electric railroad.

Davenport later established a workshop in New York City and began a publication on electromagnetism and mechanics printed on a press powered by the electric motor he invented.


Since 1945 we have worked closely with OEM'S, industrial plants, and processing companies, solving their drive and motor problems and servicing their equipment needs.


Each Herold & Mielenz, Inc. employee is a qualified technician, educated in his field, experienced through years of work in the industry and dedicated to making each product application and project a product of true craftsmanship.

It is our understanding of customer needs, attention to detail and our reputation of standing behind our work that has made Herold & Mielenz, Inc. the strong force that it is in the field today.

When you need electric motor drive expertise coupled with integrity, call Herold & Mielenz, Inc.

  Herold & Mielenz, Inc.
Call us toll free! 800-422-7493

3531 51st Avenue
Sacramento , CA 95823
916-422-7493
Fax: 916-422-7689
info@heroldmielenz.com

4221 Brew Master Drive
Suite 16
Ceres , CA 95307
209-537-7300
Fax: 209-537-7333
info@heroldmielenz.com