PAT'D / NOV. 23rd 1886
Picture Courtesy Bob Berry
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Picture Courtesy Bob Berry
CD 187: USA
Picture Courtesy Bob Berry |
Picture Courtesy Bob Berry |
This CD is known as a "Brown Pony" and is designed to the Robert Brown patent in 1886 to allow a double ended pin through the cross arm to mount an insulator on top and one underneath as a transposition or to double the wire density.
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