Plate, switch

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OBJECT TYPE: single/tumbler/flush
DATE: 1919
ARTIFACT NUMBER: 1992.2741.001

MANUFACTURER: Crabtree
MODEL: 7209 3007
LOCATION: England

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: porcelain

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: N/A
Thickness: 1.2 cm
Weight: N/A
Diameter: 5.7 cm
Volume: N/A

Lexicon

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

Manufacturer

AKA: Crabtree
Country: England
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Unknown
Period: 1919+
Canada: An example of a switch cover of a type used in Canada. Part of a large and varied collection of over 7500 electrical items acquired and documented by Ontario Hydro in the1960s. The collection was thought to be the largest and most comprehensive of its kind in Canada and was donated to the National Museum of Science and Technology in 1992.
Function: Cover for tumbler switch mechanism.
Technical: John Ashworth Crabtree started his career as an apprentice with Verity's and later was works manager for J.H. Tucker and Co. Ltd. In 1919 he started his own business, J.A. Crabtree and Co. Ltd., and quickly showed that he possessed a high degree of commercial ability in addition to a remarkable gift for designing small and intricate mechanisms. His initial resources were too small to enable him to launch a full range of wiring accessories. His approach was to specialise in tumbler switches which commanded attention because of their quality (Ref. 2)
Area Notes: Unknown

Details

Markings: raised lettering on inside reads "CRABTREE" AND "7209/3007"
Missing: complete
Finish: glazed white porcelain
Decoration: N/A

CITE THIS OBJECT

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

Crabtree, Plate, switch, after 1919, Artifact no. 1992.2741, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1992.2741.001/

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