Farmer and Batchelder insulator patent

[Trade Journal]

Publication: Scientific American

New York, NY, United States
vol. 14, no. 3, p. 18, col. 2

Patent Claims


Issued from the United States Patent Office



[Reported officially for the Scientific American.]

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TELEGRAPH INSULATORS - M. G. Farmer, of Salem, Mass., and J. M. Batchelder, of Cambridge, Mass. : We claim the iron wire supporter or hook in combination with a screw insulator made of hard india-rubber, and attached to the hook or shank, in the manner described.


Keywords:Batchelder : Farmer
Researcher notes: 
Supplemental information: Patent: 21,492
Researcher:Bob Stahr
Date completed:February 1, 2010 by: David Wiecek;