Suspension insulators

Issues in developing a taxonomy for suspensions
A proposed numbering system

Hardware

Cap designs

• Straight side ball and socket (1910)
• Peaked ball and socket
• Modern ball and socket
• Clevis
• Spider (Jeffrey-Dewitt)
• Riveted strap
• Hook and eye

Hewlett links
Arcing rings and horns
Yokes

Styles

Hewlett styles   1   2   3   4   5      6   7         8     9
    "Hog liver"   10
    English Hewlett   11
    German Hewlett   12 13
Fog styles
Smooth bottom
Spiral grooves
Glass suspensions
Modern styles
Compositions