Facing page: A small portion of the wide variety porcelain Westinghouse insulators 


Above: Circa 1878-1885 view along the Pennsylvania Railroad mainline in central Pennsylvania. Note the use of what is likely a threadless type on the ridge pin, three crossarms with Brooks rams horns, and four pintypes on the bottom crossarm, all replaced by the mid 1910’s with “modern” glass and porcelain pintypes.


September 2018 49


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