Insulator Profile - CD 122: Hemingray-16, Hemingray-17

Insulator Profile: HEMINGRAY-16 & 17
Copyright © 2007. All rights reserved.	CD:	122
	Manufacturer:	Hemingray
	Style Number:	16 & 17
	Trade Name:	Long Distance & Toll Line
	Size:	2 3/4" W x 3 7/8" H
	Weight:	15 oz.
	Production Date:	1920's - 1960's
	Usage:	Telephone (long distance)
	"In the early days of the telephone, single petticoat insulators were standard for toll line construction. The Hemingray No. 16, with a single petticoat is still widely used for lines of medium length." "The No. 16 has about the longest leakage path possible for a single petticoat type on a standard pin. It has a square wire groove." "The No. 17 is exactly similar to the No. 16 except it has a somewhat wider groove for larger wire."

Common Variations:
Colors:	Hemingray Blue, Aqua, and Clear
Bases:	Smooth, Corrugated, Round or Sharp drip points
Embossings:	(F-Skirt) HEMINGRAY-16 (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:	7-up Green, Clear/Blue Two Tone
Embossings:	(F-Skirt) HEMINGRAY-16 (R-Skirt) [Numbers] (F-Skirt) HEMINGRAY-16 (R-Skirt) [Numbers and dots]/MADE IN U.S.A. Various blotted out embossings and spelling errors

Rare Variations:
Colors:	Light Opalescent, Opalescent, White Milk