Western Electric Transmitting Tube, Type 270-A, Used at Radio Station WWJ, Detroit, Michigan, circa 1935
01
Artifact Overview
Vacuum tubes appear in older radios, televisions, amplifiers, computers, and other electronic devices. Their function: to amplify or transmit electronic signals. Typical tubes are sealed glass bulbs evacuated of gas, allowing electron flow to be influenced by an interior cathode, plate and grid. Perfected in 1906, the vacuum tube was the genesis of a communications revolution.
Artifact Details
Artifact
Vacuum tube
Date Made
circa 1935
Place of Creation
Location
Not on exhibit to the public.
Object ID
90.0.85.600
Credit
From the Collections of The Henry Ford.
Material
Canvas
Glass (Material)
Iron alloy
Porcelain (Material)
Wood (Plant material)
Dimensions
Height: 24 in
Width: 10.5 in
Length: 10.5 in
Inscriptions
vacuum tube:
Western Electric
Made in U.S.A.
1459
shipping label:
Western Electric
Reg. U.S. Pat. Off.
270-A Vacuum Tube
Made in U.S.A.
[patent information]
1307510 . . . 1809099
shipping label:
Graybar Elec. Co., Inc.
55 W. Canfield
Detroit, Mich.
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