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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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