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Ingenium, 1992.2514.001
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OBJECT TYPE
push-button/double/flush
DATE
1920
ARTIFACT NUMBER
1992.2514.001
MANUFACTURER
Diamond H
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
porcelain cup/ brass plate/ hard rubber buttons, one with mother-of-pearl? inlay/ 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
7.0 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
Diamond
Country
United States of America
State/Province
Unknown
City
Unknown

Context

Country
North America
State/Province
Unknown
Period
circa 1920+
Canada
An American made switch of a type used in Canadian households. 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 (Ref. 2). A similar switch was sold by Canadian General Electric in its 1920-1921 catalogue (Ref. 5). Diamond H, previously named the Hart Mfg. Co., was a company formed by American Waldo Hart in 1890. The first push-button switch made by Hart & Co. appeared in 1899. By 1915 Diamond had become part of Hart & Hegeman (Ref. 1).
Area Notes
Unknown

Details

Markings
raised lettering on push button reads "DIAMOND H/ SWITCH" with "H" logo/ incised lettering on metal fasteners reads "H [Diamond H logo]", "10A./220V."
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:

Diamond H, Switch, circa 1920, Artifact no. 1992.2514, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2514.001/

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