Insulator Profile:

CD 113 Hemingray-12
Copyright 2007. All rights reserved.

CD: 113
Manufacturer: Hemingray
Style Number: 12
Trade Name: Double Groove Pony
Size: 2 3/8" W x 3 5/8" H
Weight: 11 oz.
Production Date: Late 1890's - 1950's
Usage: Telephone (exchange)
"Telephone exchange line construction requires frequent drop lines to residences and a two-groove insulator (one groove for the line, and one groove for the drop wire) is needed."

"This insulator was developed to meet this need for a double-grooved pony-type insulator"

Common Variations:
Colors: Hemingray Blue, Aqua, and Clear
Bases: Round or Sharp drip points
Embossings: (F-Skirt) HEMINGRAY/No 12 (R-Skirt) PATENT/MAY 2 1893
(F-Skirt) HEMINGRAY (R-Skirt) No 12
(F-Skirt) HEMINGRAY/MADE IN U.S.A. (R-Skirt) No 12
(F-Skirt) HEMINGRAY-12 (R-Skirt) MADE IN U.S.A.
(Numbers and dots may appear below the embossing on either or both the front and the back)
If your insulator has "numbers and dots" on it, you can find out more about them
by reading this information about dating your insulator.
Uncommon Variations:
Colors: Milky Aqua, Jade Green, Emerald Green, Purples
Embossings: (F-Skirt) HEMINGRAY/No 9 {Note No 9} (R-Skirt) PATENT/MAY 2 1893
Various blotted out embossings and spelling errors

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