[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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