- Item 74827 - Pin-type electrical insulator, ca. 1897
- Contributed by Maine Historical Society
- Item 74827
- 3948px x 4200px - 13.2"w x 14.0"h @ 300dpi | Need a larger size?
- *Credit line must read: Collections of Maine Historical Society
This insulator, a type made in late 1896 and early 1897 by the Imperial Porcelain Works of Trenton, New Jersey, was used in the Sanford area.Show Details
It was an early porcelain insulator and proved so popular that the plant could not keep up with the demand and quality suffered.
By the 20th century, however, porcelain replaced glass as the most common insulator material.