Lamp bulb, incandescent

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Ingenium, 1992.0645.001
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OBJECT TYPE: TANTALUM/VACUUM/110V/STRAIGHT/SCREW
DATE: 1906
ARTIFACT NUMBER: 1992.0645.001

MANUFACTURER: PACKARD LAMP CO.
MODEL: Unknown
LOCATION: Unknown

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: TANTALUM FILAMENT/ GLASS BULB & STEM/ PLATINUM LEADS THROUGH SEAL/ METAL (BRASS?) BASE/ PORCELAIN INSULATION/ FIBER LEADS SEPARATOR/ COPPER LEADS

Dimensions

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

Length: 18.2 cm
Width: 7.8 cm
Height: N/A
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: PACKARD
Country: Unknown
State/Province: Unknown
City: Unknown

Context

Country: Unknown
State/Province: Unknown
Period: Unknown
Canada: Unknown
Function: LIGHTING/ GENERAL/ CLEAR
Technical: TANTALUM DUCTILE ENOUGH TO BE DRAWN INTO WIRE/ ON AC TANTALUM CRYSTALLISED & BROKE, HAD A LONGER LIFE ON DC/ INITIAL EFFICIENCY OF 5 LPW, AVERAGE OVER LIFETIME OF 4.5 LPW/ TANTALUM FILAMENT HAD LOW SPECIFIC RESISTANCE SO MUST BE LONGER & THINNER THAN CARBON FILAMENT
Area Notes: Unknown

Details

Markings: ONCE WHITE, NOW BROWN, RECTANGULAR SHAPED PAPER STICKER ON BULB WITH BLACK PRINTING READS: 'PACKARD TANTALUM 110V'/ STAMPED INTO BASE SKIRT IS 'PAT. OCT. 15. 1907'/ STAMPED INTO PORCELAIN BASE INSULATION VISIBLE THROUGH BULB IS: '70E'
Missing: N/A
Finish: CLEAR GLASS BULB, BUTTON & STEM/ BRASS COLOURED BASE WITHSKIRT/ BLACK CONTACT RING/ WHITE RING BELOW BASE SKIRT/ WHITE LEADS SEPARATOR/RECTANGULAR PAPER STICKER, BLACK ON BROWN, ON BASE
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

PACKARD LAMP CO., Lamp bulb, incandescent, circa 1906, Artifact no. 1992.0645, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.0645.001/

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