electric insulator
Datelate 19th-mid 20th Century
Inventory Number2007-1-0166
ClassificationInsulator
Subject
Maker
American
?
Cultural Region
Dimensions10 × 7.3 × 6.2 cm (3 15/16 × 2 7/8 × 2 7/16 in.)
Material
DescriptionA pin-type, unibody insulator of translucent blue glass, oval-shaped at the top. The top has a wide saddle-shaped cable groove, a semicircular groove on either side of the insulator and a generally cylindrical, rounded base with a straight-sided skirt. Inside, the insulator is threaded.
Signedunsigned
FunctionInsulators like this one are used to suspend bare wires that transmit electricity at very high voltages. They are made of materials that do not conduct electricity even at extreme voltages.
