[Trade Journal]
Publication: Western Electrician
Chicago, IL, United States
vol. 9, no. 23, p. 334, col. 2-3
Insulating or Break Knob
The cut shows an insulating or break knob placed on the market by the Hemingray Glass company of Covington, Ky. This device is designed for use in insulating span wires, guy wires and arc lamps, and is also used for a lamp hanger.
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| Insulating or Break Knob. |
