United States Patents Related to Insulators Listed by Inventor
 
 

Inventor	Patent Number & Date	Description	Notes
Barbour, Wellington of Bar Harbour, Maine	Letters Patent 592,505 granted October 26, 1897	An insulator with a flange on the side that will hold an elastic covering designed to withstand projectiles. The wire groove has a metal lining to prevent the tie wire from cutting into the elastic covering.