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   1976 >> June  

Message to readers about contents for this month....

  

   

Porcelain Insulator News

   by Jack H. Tod

   

Dear Jack:                             

I found this interesting porcelain insulator in an antique shop here in New England and could not find a U- number for it.                           

...                    [more]


   

Questions Answered by N. R. Woodward

   Author of The Glass Insulator in America and originator of C.D. #'s (Consolidated Design Numbers)

   

Jim Woods, Collinsville, Illinois, writes: 

Here is a photo showing two early Hemingray insulators. The one on the right is a CD 133.4 with Patent Dec. 19,1871 on the front and 3 on the back dome. The one on the left, I assume, is a CD 134, with Patent Dec. 19,1871 in very large ...                    [more]

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