Vacuum tube
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Ingenium,
1969.0848.001
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- OBJECT TYPE
- DETECTOR/AMPLIFIER/OSCILLATOR
- DATE
- 1918–1920
- ARTIFACT NUMBER
- 1969.0848.001
- MANUFACTURER
- MOORHEAD LABORATORIES
- MODEL
- A
- LOCATION
- San Francisco, California, United States of America
More Information
General Information
- Serial #
- 105611
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- TUNGSTEN FILAMENT/ NICKEL WIRE GRID/ SHEET NICKEL PLATE/ BRASS BASE COVER/ GLASS ENVELOPE/ SYNTHETIC BASE
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 10.0 cm
- Width
- 4.4 cm
- Height
- N/A
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Vacuum Tubes
- Category
- Receiving
- Sub-Category
- N/A
Manufacturer
- AKA
- MOORHEAD
- Country
- United States of America
- State/Province
- California
- City
- San Francisco
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- Unknown
- Canada
-
Unknown - Function
-
TO DETECT, AMPLIFY & OSCILLATE RADIO WAVES IN A RECEIVER - Technical
-
EARLY TRIODE TUBE/ AN EXAMPLE TO SHOW HISTORY OF PROBLEMS WITH PATENT INFRINGEMENTS IN U.S. & ATTEMPTS TO DEAL WITH THIS PROBLEM [SEE: 'SAGA OF THE VACUUM TUBE'] - Area Notes
-
Unknown
Details
- Markings
- ETCHED ON GLASS: 'MOORHEAD LABORATORIES/ SAN FRANCISCO/ 105611/ PATENTED NOVEMBER 7, 1905/ SOLD ONLY FOR AMATEUR/ AND EXPERIMENTAL USE'/ STAMPED IN BASE COVER: 'MARCONI [ON DRAWING OF EARTH]/ TRADE MARK/ FLEMING PATENT NO. 863684/ DE FOREST AUDION/ US PATENT NOS. 841387-879532/ SOLD ONLY FOR AMATEUR/ AND EXPERIMENTAL USE'
- Missing
- From CA of 02/05/1998 by Pat Montero: No - Complete
- Finish
- UNCOLOURED GLASS ENVELOPE/ UNFINISHED METAL
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
MOORHEAD LABORATORIES, Vacuum tube, between 1918–1920, Artifact no. 1969.0848, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1969.0848.001/
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