7 Antique Glass Awning Rings, Handmade RADIO ANTENNA LIGHTNING ROD INSULATOR USA

Description

7 antique Glass Awning Rings, Handmade. None Identical.
These glass rings are often thought to be strain insulators. They were actually used to support awnings where the glass would slide on the metal supporting poles and the metal would attach to the awning. An article from "Radio News" in December 1924 recommends using these inexpensive awning rings for radio strains. This may be why people frequently assume they were intended for that purpose." ...National Insulator Association.
These were dusty and dirty. Cleaned up real nice.
see pics.
Size varies, roughly outer diameter of 2"
.
Not identical. They are all hand made. Each one is unique. They are roughly all the same. Or, very similar.
Pics are of actual item.
These are from an estate sale of an Awning place that closed recently after 65 years in the business.
Thanks for looking,
Location Note: O-01-1. Small drawer