Vacuum tube

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Ingenium, 1969.1264.001
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OBJECT TYPE: DOUBLE GAP/COLD CATHODE
DATE: 1951
ARTIFACT NUMBER: 1969.1264.001

MANUFACTURER: Western Electric Co.
MODEL: 313C
LOCATION: United States of America

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: GLASS/ SYNTHETIC/ METAL

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 8.2 cm
Width: 2.9 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Vacuum Tubes
Category: Telephone
Sub-Category: N/A

Manufacturer

AKA: Western Electric
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: Unknown
State/Province: Unknown
Period: 1930'S TO 1950'S
Canada: Unknown
Function: USED IN TELEPHONE SWITCHING SYSTEMS TO SWITCH ON RELAYS/ SUITED TO CONTROL CIRCUITS SUCH AS TRIGGERING, COUNTING OR SWITCHING, VISUAL INDICATORS/ THE LARGEST USE IN THE 1930'S WAS FOR SELECTIVE RINGING IN MULTI-PARTY TELEPHONES
Technical: USED A GLOW DISCHARGE FOR CONDUCTION OF CURRENT/ HAD 'CALORIZED' CATHODES, I.E., A THIN NON-CONDUCTING LAYER OF ALUMINUM OXIDE ON ONE SIDE OF NICKEL SHEET/ VERY POPULAR TUBE IN THE TELEPHONE INDUSTRY
Area Notes: Unknown

Details

Markings: PRINTED ON TOP OF BULB: 'WESTERN ELECTRIC MADE IN U.S.A. 113/ 313C'
Missing: N/A
Finish: BLACK INTERNAL COATING ON GLASS (SEE COMMENTS)/ BLACK BASE/ YELLOW PRINTING
Decoration: N/A

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Western Electric Co., Vacuum tube, 1951, Artifact no. 1969.1264, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1969.1264.001/

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