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- Westinghouse Type A Polyphase Wattmeter, 1903-1906 - In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Paul McGahan, a Westinghouse electrical engineer created a practical polyphase wattmeter in 1899 to measure electric power usage. This design was adopted by other companies and remained a standard well into the mid-1900s.
- 1903-1906
- Collections - Artifact
Westinghouse Type A Polyphase Wattmeter, 1903-1906
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Paul McGahan, a Westinghouse electrical engineer created a practical polyphase wattmeter in 1899 to measure electric power usage. This design was adopted by other companies and remained a standard well into the mid-1900s.
- Electric Iron, 1909-1929 -
- 1909-1929
- Collections - Artifact
Electric Iron, 1909-1929
- Emerson Series HH Meston Fan Motor, circa 1893 -
- circa 1893
- Collections - Artifact
Emerson Series HH Meston Fan Motor, circa 1893
- Westinghouse Round Type Wattmeter, 1902 - 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.
- 1902
- Collections - Artifact
Westinghouse Round Type Wattmeter, 1902
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.
- Westinghouse Tungsten Lamp, 1908 -
- 1908
- Collections - Artifact
Westinghouse Tungsten Lamp, 1908
- 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.
- Westinghouse Type C Switchboard Wattmeter, 1906-1911 -
- 1906-1911
- Collections - Artifact
Westinghouse Type C Switchboard Wattmeter, 1906-1911
- Westinghouse Ground Detector, circa 1900 -
- circa 1900
- Collections - Artifact
Westinghouse Ground Detector, circa 1900
- Westinghouse Vibrating Rectifier, 1910-1920 -
- 1910-1920
- Collections - Artifact
Westinghouse Vibrating Rectifier, 1910-1920
- Duncan Model E Wattmeter, 1925-1930 - In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used--and then charge them accordingly. Thomas Duncan developed wattmeters for several companies before starting his own meter manufacturing business in 1901. Duncan came out with the Model E in 1908 and produce it over the next several decades.
- 1925-1930
- Collections - Artifact
Duncan Model E Wattmeter, 1925-1930
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used--and then charge them accordingly. Thomas Duncan developed wattmeters for several companies before starting his own meter manufacturing business in 1901. Duncan came out with the Model E in 1908 and produce it over the next several decades.