Lewis Self-Binding insulator

The Lewis Self-Binding Insulator.

We illustrate herewith the Lewis self-binding, high resistance insulator, which dispenses entirely with the use of the ordinary binding wire, and can be applied instantly to the line wire witout any tools whatever, whether it be on curves, against walls, under bridges, on roofs, or in any of the difficult positions often met with.

Fig. 1. The Lewis Patent Self-Binding, High-Resistance Insulators

Fig. 1 shows the insulator as ordinarily used. As will be seen, the insulator terminates on the top in a conical screw. There is a "clip" which goes three-quarters around the insulator, with turn-up ends, through which the line wire passes. As the insulator is screwed down upon the pin, the clip and line wire, following the conical thread, go down until they reach the position shown in the cut, where both are firmly held, nor can they be detached without unscrewing the insulator from the pin, in which case they come off as easily as they went on. for all ordinary purposes the hold on the line wire, which becomes slightly bent around a portion of the insulator, is ample, but if, in special cases, a stronger grip is needed, it may be secured by the use of an additional tie wire, as shown in Fig. 2.

Fig. 2. The Lewis Patent Self-Binding, High-Resistance Insulators

If desired, the clip may be dispensed with entirely, and an ordinary tie-wire used. In this case the line wire may be disconnected from the insulator by simply turning the latter round, and a new one put in without cutting the tie wire.