Patent # 349,788 for insulating knob

[Trade Journal]

Publication: Electrical World

New York, NY, United States
vol. 8, no. 16, p. 196, col. 1

OUR ILLUSTRATED RECORD OF ELECTRICAL PATENTS.

PATENTS DATED SEPT. 28, 1886.

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349,788. Insulator; N. T. Fitch, Chicago, Ill. The invention consists in imbedding a screw or other fastening device within the body of insulating material, so as to form one complete fastening.

 

349,788. INSULATOR.
349,788. Insulator.

 

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Keywords:Knob
Researcher notes: 
Supplemental information: Patent: 349,788
Researcher:Bob Stahr
Date completed:May 10, 2009 by: Bob Stahr;