[Trade Journal] Publication: Western Electrician Chicago, IL, United States |
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ILLUSTRATED ELECTRICAL PATENT RECORD. Issued (United States Patent Office) December 17, 1901. · ·
689,218. Electrical Insulator. Albert F. Parks, Brooklyn, N. Y., assignor to Lewis B. Stillwell, New York, N. Y. Application filed April 8, 1901. A support for the insulator consists of a threaded pin of wood or other soft material and receives the insulator upon one end. An enlargement is provided upon the pin against which a portion of the insulator abuts, and a metallic socket receives the other end of the pin (See cut.) · · |