Socket

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OBJECT TYPE
screw/switched/threaded catch
DATE
1920
ARTIFACT NUMBER
1992.2571.001
MANUFACTURER
General Electric Co.
MODEL
Unknown
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
brass shell/ copper/ synthetic switch handle

Dimensions

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

Length
N/A
Width
N/A
Height
6.9 cm
Thickness
N/A
Weight
N/A
Diameter
6.3 cm
Volume
N/A

Lexicon

Group
Energy-electric
Category
User site
Sub-Category
N/A

Manufacturer

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

Context

Country
North America
State/Province
Unknown
Period
circa 1920+
Canada
An example of an American made socket of a type used in Canada. Part of a large & varied collection of over 7500 electrical items acquired & documented by Ontario Hydro in the 1960s. The collection was thought to be the largest & most comprehensive of its kind in Canada & was donated to the National Museum of Science & Technology in 1992.
Function
An electrical wiring device used to support & connect to electricity a lamp or other electrical device, specifically a pilot light.
Technical
An example of a threaded catch socket of circa 1920. 1890 to 1899 was a period during which the details of wiring devices which had appeared in the previous decade were improved. Keys were added to lamp sockets & receptacles. Where the lamp switch was controlled by the wall or base switch, the socket could remain keyless; otherwise the light switch had to be incorporated within the socket utilizing as its switching mechanism the key, pull-chain or push-button. Besides the Edison screw socket & receptacle, other methods of supporting lamps appeared including the Thomson-Houston, the Westinghouse & the bayonet types (Ref. 3). A simple arrangement which did not require the service of a mechanic to change a lamp was a necessity for commercial production of electric lamp sockets. In 1880 Edison introduced the screw cap which still bears his name (Ref. 2). Edison had the idea for a light socket while screwing the cap on a kerosene can. It has the advantage of firmly seating the bulb without having to snap, pull or otherwise jar the lamp and its delicate filament. There were rival lamps before 1900, each with its own base, but Edison's base had 70% of the market in the early 1900s (Ref. 4).
Area Notes
Unknown

Details

Markings
incised lettering on shell reads "250W-250V/ G.E. CO.-U.S.A."
Missing
appears complete
Finish
metal, brass, copper/ synthetic
Decoration
N/A

CITE THIS OBJECT

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

General Electric Co., Socket, circa 1920, Artifact no. 1992.2571, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2571.001/

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