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Electric Machinery Company (EM)
History
For over 100 years, Electric Machinery Company (EM)
has earned its reputation for designing, manufacturing, and servicing
large, custom-engineered electrical motors and generators in the U.S.
and worldwide. We serve oil and gas refinery, chemical, utility, general
industrial, pulp and paper, and municipal markets. EM has earned a reputation
for design innovation by developing the:
- First High-Starting-Torque Synchronous Motor
- First Solid-State Brushless Excitation System
- First Vertical, Self-Contained Hydrogenerator
- First Automatic Starting System for Synchronous Motors
- First 2-Pole Induction Motor Design to Operate
- Below its First Critical Speed
EM pioneered its
Duraguard™ insulation system in the
early 1970's. Today, EM's
Duraguard™ process, using epoxy resin tape
and vacuum/pressure impregnation (VPI), is recognized as the benchmark
of the industry.
| Timeline |
| 1891 |
Electric Machinery founded as a service shop. |
| 1897 |
Electric Machinery Manufacturing Company began
manufacturing. |
| 1944 |
Worthington Machinery Corporation purchased Electric Machinery
Manufacturing Company from Silas McClure, private owner, and
EM became wholly-owned subsidiary of Worthington. |
| 1967 |
Worthington and Studebaker merged and became
Studebaker-Worthington, Incorporated. |
| 1970 |
Turbodyne Corporation formed consisting of Electric Machinery
Manufacturing Company and Worthington Turbine International. |
| 1971 |
Turbodyne Corporation had three major operations
- EM, Worthington Steam Turbine, and Turbodyne Gas Turbines. |
| 1978 |
Turbodyne Gas Turbine plant in St. Cloud, MN, sold to Brown
Boveri Corporation and Turbodyne Corporation remaining Operations
continued as part of Studebaker-Worthington. |
| 1979 |
McGraw-Edison Company acquired Studebaker-Worthington,
Incorporated. |
| 1980 |
Electric Machinery aligned with Power Systems Division of
McGraw-Edison Company. |
| 1983 |
Electric Machinery aligned with Service Division
of McGraw-Edison Company. |
| 1984 |
EM & Turbodyne were acquired by Dresser Industries, Inc. |
| 1987 |
EM & Turbodyne were included in merger by Dresser
Industries, Inc. and Ingersol-Rand forming a partnership, Dresser-Rand
Company. |
| 1997 |
EM became the Motor & Generator Division of Dresser-Rand. |
| 1999 |
Ideal Electric Holding Company purchased EM
and the Electric Machinery Company was reborn. |
| 2007 |
Converteam Group purchased Electric Machinery Company |
| 2011 |
Converteam Group purchased by General
Electric (GE) |
| 2011 |
WEG purchased Electric Machinery Company from GE |
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