Key, telegraph
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1978.0494.001
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- OBJECT TYPE
- OPEN CIRCUIT
- DATE
- 1935–1945
- ARTIFACT NUMBER
- 1978.0494.001
- MANUFACTURER
- TELEGRAPH APPARATUS CO.
- MODEL
- Unknown
- LOCATION
- Chicago, Illinois, United States of America
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- STEEL/ EBONITE/ METAL/ PLASTIC
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 30.6 cm
- Width
- 20.4 cm
- Height
- 9.5 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Telegraphy
- Sub-Category
- N/A
Manufacturer
- AKA
- TELEGRAPH
- Country
- United States of America
- State/Province
- Illinois
- City
- Chicago
Context
- Country
- North America
- State/Province
- Unknown
- Period
- C 1935 TO 1965
- Canada
-
Unknown - Function
-
A DEVICE FOR OPENING OR CLOSING AN ELECTRIC CIRCUIT TO TRANSMIT TELEGRAPH OR WIRELESS SIGNALS - Technical
-
.2: DESIGN CHANGE, TO BETTER FACILITATE THE OPERATOR, RESULTING IN GREATER SPEED. - Area Notes
-
Unknown
Details
- Markings
- .2: INCISED MANUFACTURER'S PLATE: 'TELEGRAPH APPARATUS CO./ NOT INC./CHICAGO, ILL. U.S.A. [LIGHTENING BOLT LOGO] TAC' PARTIALLY ENCLOSED IN A CIRCLE/ RESISTOR ON.2: 'AEROVOX/ MADE IN CANADA' IN RAISED LETTERING/ '.005' RAISED ON RESISTOR ATTACHED TO BASE/ RIGHT FRONT CONNECTION NUMBERED: '7 6 4 2'ON ONE SIDE & 'THORDARSON/ 20C62' ON THE OTHER/ INCISED BACK CONNECTION: 'K27J688-5/ 5MFD/ 600VDC-N10S/ INCISED ON PLUG: 'AMPHENOL UG-203/11/CPH-49482'.
- Missing
- From CA of 09/23/1996 by Kevin Machan: Undetermined
- Finish
- .2: NICKEL PLATED
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
TELEGRAPH APPARATUS CO., Key, telegraph, circa 1935–1945, Artifact no. 1978.0494, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1978.0494.001/
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