Publication: Western Electrician
Chicago, IL, United States
ILLUSTRATED ELECTRICAL PATENT RECORD.
Issued (United States Patent Office) May 29, 1906.
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.)
|Supplemental information:||Patent: 822,211|
|Date completed:||March 21, 2009 by: Bob Stahr;|