Z. C. Robbins insulator patent #8,419

[Trade Journal]

Publication: Scientific American

New York, NY, United States
vol. 7, no. 6, p. 46, col. 1


LIST OF PATENT CLAIMS

Issued from the United States Patent Office.

For the week ending October 14, 1851.

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To Z. C. Robbins, of Washington D.C., for improvement in insulators for telegraph wires.

I claim my improved insulating supporter for telegraph wires, composed of the supporting and protecting cover, the winged tube, the wire holder, and the insulating segments (two) arranged and combined with each other, substantially in the manner described.

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Keywords:Z. C. Robbins
Researcher notes:Found searching http://cdl.library.cornell.edu/moa/
Supplemental information: Patent: 8,419
Researcher:Elton Gish
Date completed:January 14, 2006 by: Bob Berry;