Lamp bulb, discharge & flask
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1992.1753.001
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- OBJECT TYPE
- SODIUM/LOW-PRESSURE/TUBE/4-PIN
- DATE
- 1939
- ARTIFACT NUMBER
- 1992.1753.001
- MANUFACTURER
- General Electric
- MODEL
- NA 9
- LOCATION
- 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
- .1-.2 GLASS, METAL & ASBESTOS PTS/.1 ALSO HAS A PROBABLY SYNTHETIC BASE WITH FIBRE TAPE AROUND IT
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 41.5 cm
- Width
- 8.2 cm
- Height
- 8.2 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Lighting Technology
- Category
- Lamp bulbs
- Sub-Category
- N/A
Manufacturer
- AKA
- General Electric
- Country
- United States of America
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- SODIUM LAMPS 1ST USED FOR STREET LIGHTING 1934 IN N.AMERICA/ HIGH-PRESSURE SODIUM LAMPS INTRO. IN 1964
- Canada
-
TYPE OF LAMP USED IN CANADA FOR STREET LIGHTING/ 1ST INSTALLATION OF SODIUM STREET LIGHTING IN CANADA (AS IN U.S.) TOOK PLACE IN 1934 - Function
-
LIGHTING/ SPECIAL/ OUTDOOR/ USED FOR STREET LIGHTING - THE VACUUM FLASK (.2) IS USED WITH THE LAMP TO MAINTAIN A SUFFICIENT TEMPERATURE FOR THE OPTIMUM OPERATION OF THE LAMP & TO PROVIDE A MORE UNIFORM LIGHT OUTPUT & WATTAGE UNDER THE WIDE VARIETIES OF TEMPERATURE & WIND VELOCITY ENCOUNTERED IN OUTDOOR OPERATION. - Technical
-
SODIUM VAPOUR LAMPS DIDN'T BECOME PRACTICAL UNTIL A GLASS WAS DEVELOPED WHICH WAS NOT AFFECTED BY SODIUM DEPOSITS/ LOW-PRESSURE SODIUM DISCHARGE GENERATES BARELY ENOUGH HEAT TO KEEP LAMP AT BEST WORKING TEMP. SO LAMP ENCASED IN 2-3 WALLED VACUUM FLASK/ A.1955 SINGLE EVACUATED BULB USED, COATED WITH HEAT REFLECTING MATERIAL - Area Notes
-
Unknown
Details
- Markings
- .1 STAMPED ON BULB 'MADE IN U.S.A./ GE [LOGO]/ SODIUM VAPOUR LAMP/ NA 9'/.2 'GE [LOGO]/ 71-G/ U.S. PAT. 1984426/ 2042148 2056648/ 2116710/ MADE IN U.S.A.'/ HANDWRITTEN HYDRO# ON BOTH.1 &.2 '1034'
- Missing
- N/A
- Finish
- .1 TRANSPARENT, SLIGHTLY CLOUDY BULB, IRREGULAR WHITE DEPOSITS ON INSIDE OF GLASS, SILVERTONE & BRASSTONE PTS, BLACK BASE/.2 TRANSPARENT, COLOURLESS GLASS, COPPER COLOUR WIRE INSIDE, SILVERTONE COLLAR
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
General Electric, Lamp bulb, discharge & flask, circa 1939, Artifact no. 1992.1753, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.1753.001/
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