[Trade Journal]
Publication: Western Electrician
Chicago, IL, United States
vol. 38, no. 23, p. 486, col. 3
ILLUSTRATED ELECTRICAL PATENT RECORD.
Issued (United States Patent Office) May 29, 1906.
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| No. 822,211. — Insulator |
822,211. Insulator. Fred M. Locke, Victor, N. Y. Application filed June 23, 1906.
A bell-shape porcelain center piece gradually increases in diameter from top to bottom and has a central threaded aperture extending upwardly from its lower face, the upper end of the center piece being substantially flat and parallel with its lower end face. A porcelain cap rests upon the flat upper end of the center piece. (See cut.)
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