Trimble Patent Insulator

THE TRIMBLE INSULATOR

This neat and simple insulator which is now being manufactured by the Trimble Patent Insulator Company, of 311 West Baltimore street, Baltimore, is the invention of W. D. Trimble, formerly of the Wenstrom Company, of Baltimore. It consists of a metal skeleton with holders and slots in the ends designed for holding the insulators proper, which are made of porcelain in two similar parts with a boss on each half.

The Trimble Insulator.

The holder or skeleton has a stationery screw in the centre for fixing to the ceiling or wall. To adjust the insulator one simply presses the screw into the ceiling using the holder as a lever. The two halves of the insulating block are then placed around the wire, slipped into place in the holder and given a half turn to secure them against displacement. No tie wires are, therefore, necessary. The device will be readily understood by reference to the accompanying illustration.