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Ingenium, 1992.2497.001
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OBJECT TYPE
push-button/double/flush
DATE
1912
ARTIFACT NUMBER
1992.2497.001
MANUFACTURER
Unknown
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
porcelain cup/ synthetic push-buttons, one with steel inlay/ brass plate/ metal parts

Dimensions

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

Length
11.4 cm
Width
7.0 cm
Height
5.5 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

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

Manufacturer

AKA
Unknown
Country
Unknown
State/Province
Unknown
City
Unknown

Context

Country
North America
State/Province
Unknown
Period
Unknown
Canada
A switch 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 make or break a connection in an electrical circuit.
Technical
The first patent for a push-button switch was granted to Ediswan in 1895. The single push-button switch had the disadvantage of not indicating if the switch is open or closed & has seldom been used. The two button arrangement, however, was free from this defect & enjoyed great popularity in America until the late 1920s (Ref. 2).
Area Notes
Unknown

Details

Markings
incised lettering on button reads "ESC"/ incised lettering on metal fasteners reads "10A./ 125V.", "5A./ 250V."& "UND. LAB./ INSP."/ raised lettering on underside of cup reads "PAT JULY 16/ NOV 5 1912/ PAT APPLD/ FOR"/
Missing
appears complete
Finish
unglazed white porcelain/ gold coloured metal/ black buttons
Decoration
N/A

CITE THIS OBJECT

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

Unknown Manufacturer, Switch, after 1912, Artifact no. 1992.2497, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2497.001/

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