Insulator Profile:

CD 128 Hemingray CSA
Copyright 2007. All rights reserved.

CD: 128
Manufacturer: Hemingray
Style Number: 22
Trade Name: CSC
Size: 2 5/8" W x 4" H
Weight: 16 oz.
Production Date: 1940 - 1950's
Usage: Telephone (long distance)
"Modern carrier circuits with their higher frequencies need this special insulator developed by Hemingray to meet carrier circuit needs, Its value has been proven by the many miles of telephone carrier circuits in which it is used today."

"It is mounted on a special steel pin, cushioned by a lead sleeve, which screws into the insulator."

"This insulator is well adapted for point transpositions in carrier circuits, with special brackets for supporting the insulators on the cross-arms."

Common Variations:
Colors: Clear
Bases: Smooth or Corrugated
Embossings: (F-Skirt) HEMINGRAY/[Numbers and dots] (R-Skirt) C.S.A.
(F-Skirt) HEMINGRAY/[Numbers and dots] (R-Skirt) C.S.C
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: Light Yellow
Embossings: (F-Skirt) HEMINGRAY/[Numbers and dots] (R-Skirt) C.S.O.
Rare Variations:
Colors:  Lemon, Light Opalescent, Opalescent, White Milk
Embossings: (F-Skirt) HEMINGRAY-CS/O-I logo (R-Skirt) E-14B
(F-Skirt) HEMINGRAY-E.1. (R-Skirt) MADE IN U.S.A. {Inside of skirt is threaded}

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