Insulator Patents, 1880-1960 by Jack H. Tod 130 pages, 11" x 8 1/2", single volume (1986) (out of print) Reprinted by Elton Gish in 1995

This book is for both glass and porcelain collectors! It contains 695 different patents, each with the patent number, issue date, inventor(s), and a sketch of the insulator drawing. This book is great for research or just very interesting reading. Some patents include:

• The "Cutter" (both glass & Porcelain) CD 1038
• The CD 204 Fred Locke Transposition
• The CD 194.5/195.5 Pyrex Transposition
• The CD 110.5 and CD 110.6 National screw-top's
• The U-928 Boch patent porcelain
• The CD 283 "Provo" Hemingray Insulator
• The CD 143 Withycombe insulator

And many many others you may recognize, and many oddities you probably won't! This book is great for the advanced collector, or anyone wanting to dig deeper into insulator history and development.

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Last updated January 1, 2010