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Rubber pin-type insulator, ca. 1930

Contributed by Maine Historical Society

Rubber pin-type insulator, ca. 1930

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Rubber insulators were a common replacement for glass pin-type insulators on telephone lines between 1930 and 1980.

In some areas, the glass insulators had proved tempting targets for thrown rocks or gunfire.

Insulators are needed on electric lines to prevent the electricity from "leaking" out of the wire.

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Other Information

  • Title: Rubber pin-type insulator, ca. 1930
  • Creator: Continental Rubber Works
  • Creation Date: circa 1930
  • Subject Date: circa 1930
  • Media: Rubber
  • Local Code: 204.090.4864
  • Collection: Central Maine Power Company collection
  • Object Type: Physical Object

For more information about this item, contact:

Maine Historical Society
485 Congress Street, Portland, ME 04101
(207) 774-1822 x219

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LC Subject Headings

Central Maine Power Company
Electrical apparatus

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