Washington - Baltimore Telegraph Line

Historic Insulator

[Trade Journal]

Publication: Electrical World

New York, NY, United States
vol. XXXII, no. 24, p. 632, col. 1

Wires, Wiring, and Conduits.

HISTORIC INSULATOR. - "Elect. Eng'ing.," Nov. - An illustration of what is thought to be probably the oldest specimen in existence of that type of insulator which is used in places where the permanent fastening of the wire is not desirable; it is the form used originally on the Washington - Baltimore line, and was obtained from one of the first lines built in Wisconsin, in 1848.

Keywords:	Glass Block : First Insulator : CD 1000
Researcher notes:	There is no illustration with this article, however the article it references pictured a CD 1000 glass block.
Supplemental information:	Article: 10086
Researcher:	Glenn Drummond
Date completed:	December 23, 2004 by: Glenn Drummond;