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Ingenium, 1992.2490.001
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OBJECT TYPE
canopy/tumbler/quick make & break
DATE
1950
ARTIFACT NUMBER
1992.2490.001
MANUFACTURER
Cutler-Hammer
MODEL
AN/3021-1B
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
bakelite casing/ metal switch handle & parts with synthetic? insert in tip

Dimensions

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

Length
2.9 cm
Width
1.6 cm
Height
5.6 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
Cutler Hammer
Country
United States of America
State/Province
Unknown
City
Unknown

Context

Country
North America
State/Province
Unknown
Period
mid 20th century
Canada
An American made 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, specifically in a small motor.
Technical
The tumbler switch was one of the most characteristic British contributions to wiring installation practice. Coming into regular use around 1890, it showed a radical departure from the influence of the gas tap. In quick make & break switches, a dolly & contacts were connected by a spring which changed its direction as the dolly moved over top dead centre, usually with an initial positive drive (Ref. 3).
Area Notes
Unknown

Details

Markings
incised lettering on metal plate reads"CH [LOGO]" & MADE IN U.S.A.", "AN/ 3021-1B", "ON OFF ON"
Missing
appears complete
Finish
black casing/ metallic parts
Decoration
N/A

CITE THIS OBJECT

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

Cutler-Hammer, Switch, circa 1950, Artifact no. 1992.2490, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2490.001/

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