Inverse Time Element
Henry B. Cutter’s company started in Philadelphia in 1888. In 1928 it took the name I-T-E Circuit Breaker Company. I-T-E stands for “Inverse Time Element,” a breaker trip idea: the bigger the overload, the faster it trips.
Source: IEEE Power Engineering Society history: the I-T-E Circuit Breaker Company (PDF via Baldwin Park)
BullDog and Pushmatic
In 1902 brothers Harrison and Leon Frank founded the Mutual Electric and Machine Co. in Wheeling, West Virginia, and named their switches BullDog. They moved to Detroit by 1915 and renamed the company BullDog Electric Products. By 1950 BullDog was making Pushmatic push-button breakers, and in 1954 it became a division of I-T-E.
Source: Peak of Ohio: Logan County History, BullDog Electric
Mergers
I-T-E merged with Imperial Eastman in 1968 to form I-T-E Imperial. In 1976 Gould took control, and the business ran under the Gould name.
Source: Peak of Ohio: Logan County History, BullDog Electric
To Siemens
In 1983 Gould’s electrical distribution and control business went to Siemens-Allis, a Siemens and Allis-Chalmers venture, and Siemens later owned it outright.
Sources: The New York Times: Siemens-Allis adds Gould unit (Feb. 1, 1983) Maritime Reporter (July 1985): elected president of Siemens-Allis Peak of Ohio: Logan County History, BullDog Electric
This is a history, not an endorsement. IES isn’t affiliated with I-T-E and BullDog, and its name and product names are trademarks of their owners. We use plain text, not logos.