Two-part pinless insulator patent applied for by American Insulator Company

American Insulator.

The American Insulator company of Anderson, Ind., has applied for a patent on a new insulator and insulating system for outside line work. The insulator is composed of two parts, exactly alike, corrugated on the outer surface, with an opening lengthwise through the center for line and tie wires. This opening is elliptical in the middle portion of insulator and just large enough to admit the two wires, lying parallel and against each other, but flaring and bell-shaped at the ends and large enough to allow the tie wire to be coiled around the line wire. The lugs on the flat side of each part of the insulator fit snugly in the corresponding recesses of the other, thus holding the two parts firmly in position. The groove around the outside of the insulator in its middle portion is engaged by an ordinary wire nail in such a way as to hold the insulator in its place in the crossarm. A "pinless cross-arm" is used with this insulator. Compared with the usual pins and insulators, this system is said to be better electrically, freer from induction and atmospheric influence on the currents, simpler and more cheaply built, more easily maintained, and of much longer life. In the cut the insulator, partly cut away, is shown complete with tie and line wires.

American Insulator.