Sangamo Electric Company Type F Wattmeter, circa 1909
Add to SetSummary
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used--and then charge them accordingly. Induction-type wattmeters proved reliable and would become the industry standard, but until 1910 Westinghouse held the patents. Sangamo Electric Company, which had not been granted a license from Westinghouse, produced this mercury-motor alternative.
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used--and then charge them accordingly. Induction-type wattmeters proved reliable and would become the industry standard, but until 1910 Westinghouse held the patents. Sangamo Electric Company, which had not been granted a license from Westinghouse, produced this mercury-motor alternative.
Artifact
Wattmeter
Date Made
circa 1909
Keywords
Location
Not on exhibit to the public.
Object ID
58.95.67
Credit
From the Collections of The Henry Ford. Gift of Edwin M. Parre.
Material
Metal
Glass (Material)
Color
Black (Color)
White (Color)
Dimensions
Height: 8 in
Width: 6 in
Length: 5.5 in
Inscriptions
on plate: SANGAMO INTEGRATING WATTMETER/ ALTERNATING CURRENT TYPE F/ VOLTS 110/ AMPS 5 CYCLES ANY/ SANGAMO ELECTRIC COMPANY SPRINGFIELD, ILLINOIS stamped on bracket: 99897 on readout face: KILOWATT HOURS
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