U-1947: England
2 7/8" X 4 3/8" (70mm X 107mm)
(under cap) RD No. 520335 // PATENT No. 2959-07 (top of cap)
Picture courtesy Bob Berry |
This is a dryspot insulator where the top unscrews to expose openings inside the skirt to allow a telephone drop wire to pass through the insulator to provide a "dry spot" from rain and decrease leakage loss. The logo is for the Taylor, Tunnicliff & Co. U number assignment from Worldwide Porcelain Insulators 1986 Supplement by Marilyn Albers & Jack Tod.