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Ingenium, 1992.2444.001
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OBJECT TYPE: turn/rotary
DATE: 1940
ARTIFACT NUMBER: 1992.2444.001

MANUFACTURER: Diamond H
MODEL: 322-1
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: brass shell/ porcelain base & switch handle/ paper insulation/ metal parts

Dimensions

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

Length: N/A
Width: 8.6 cm
Height: 8.2 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: mid 20th century
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; this example was a heater switch to regulate heat.
Technical: An example of a rotary switch, turned in one direction to give on-off-on-off alternately (Ref. 3). 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: incised logo consisting of "H" within diamond on underside/ raise lettering on underside reads "MADE IN U.S.A.", "G 322-1" & "M LR"/ black stamped "13/ 1-26" on underside/ incised white lettering on shell reads "25A. 125 V./ 15 A. 250 V." & "OFF LOW MED FULL
Missing: complete
Finish: metallic shell/ partially glazed white base & glazed white handle
Decoration: N/A

CITE THIS OBJECT

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

Diamond H, Switch, circa 1940, Artifact no. 1992.2444, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1992.2444.001/

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