Sangamo Electric Company Gutmann Type B Wattmeter, 1901-1903
01
Artifact Overview
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.
Artifact Details
Artifact
Wattmeter
Date Made
1901-1903
Creators
Place of Creation
Location
Not on exhibit to the public.
Object ID
00.285.108
Credit
From the Collections of The Henry Ford. Gift of General Electric.
Material
Metal
Glass (Material)
Color
Silver (Color)
Black (Color)
White (Color)
Dimensions
Height: 9 in
Width: 6.5 in
Length: 5 in
Inscriptions
on face:
GUTMANN RECORDING WATTMETER/ VOLTS 100 AMPERES 5 CYCLES 60/ SANGAMO ELECTRIC COMPANY/ SPRINGFIELD, ILLINOIS, U.S.A.
on readout:
SANGAMO ELECTRIC COMPANY/ DIRECT READING/ PATENTED/ JULY 23 95 NOV 15 98 JUNE 11 1901/ SPRINGFIELD, ILLINOIS, U.S.A.
stamped on plaque at bottom:
no. 10886/ IN SHUNT OUT
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