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- Sangamo Electric Company Gutmann Type B Wattmeter, 1901-1903 - In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Ludwig Gutmann, one of several inventive electrical engineers who designed meters to calculate power usage, developed this induction-type wattmeter for Sangamo Electric Company. U.S. production of this meter stopped after courts ruled that it infringed on existing patents held by Westinghouse.
- 1901-1903
- Collections - Artifact
Sangamo Electric Company Gutmann Type B Wattmeter, 1901-1903
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Ludwig Gutmann, one of several inventive electrical engineers who designed meters to calculate power usage, developed this induction-type wattmeter for Sangamo Electric Company. U.S. production of this meter stopped after courts ruled that it infringed on existing patents held by Westinghouse.
- Emerson Series HH Meston Fan Motor, circa 1893 -
- circa 1893
- Collections - Artifact
Emerson Series HH Meston Fan Motor, circa 1893
- Queen & Company Resistance Unit, 1893-1912 -
- 1893-1912
- Collections - Artifact
Queen & Company Resistance Unit, 1893-1912
- General Electric Type IP-5 Prepayment Wattmeter, 1916-1926 -
- 1916-1926
- Collections - Artifact
General Electric Type IP-5 Prepayment Wattmeter, 1916-1926
- Fort Wayne Type K Wattmeter, circa 1903 - In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Inventive electrical engineers developed various methods to measure electric power. Induction meters that employed magnetic fields to rotate a disc or cylinder to register energy usage would become the standard. Continued improvements made these wattmeters more compact and reliable.
- circa 1903
- Collections - Artifact
Fort Wayne Type K Wattmeter, circa 1903
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Inventive electrical engineers developed various methods to measure electric power. Induction meters that employed magnetic fields to rotate a disc or cylinder to register energy usage would become the standard. Continued improvements made these wattmeters more compact and reliable.
- Edison General Electric Company Dynamo, circa 1890 -
- circa 1890
- Collections - Artifact
Edison General Electric Company Dynamo, circa 1890
- Weston Voltmeter, 1900-1910 -
- 1900-1910
- Collections - Artifact
Weston Voltmeter, 1900-1910
- U.S. Electric Lighting Company Dynamo, circa 1880 -
- circa 1880
- Collections - Artifact
U.S. Electric Lighting Company Dynamo, circa 1880
- Westinghouse Type A Circuit Breaker, circa 1904 - In the late 1800s, as companies began producing electricity to light cities, run streetcars, and power factories, homes and offices, new apparatus was needed to safely deliver and use electricity. Excess current in a circuit could damage electric lines and equipment. Circuit breakers protected electrical circuits by automatically interrupting the power flow during an event overload.
- circa 1904
- Collections - Artifact
Westinghouse Type A Circuit Breaker, circa 1904
In the late 1800s, as companies began producing electricity to light cities, run streetcars, and power factories, homes and offices, new apparatus was needed to safely deliver and use electricity. Excess current in a circuit could damage electric lines and equipment. Circuit breakers protected electrical circuits by automatically interrupting the power flow during an event overload.
- C. & C. Electric Company Motor, 1890-1893 -
- 1890-1893
- Collections - Artifact
C. & C. Electric Company Motor, 1890-1893