High voltage Fred Locke glass insulator

High Voltage Glass Insulator.

While porcelain insulators are very largely used for high pressure electrical transmission lines, glass insulators have by no means cast aside.

The illustration (Fig. 1) represents the patent triple petticoat glass insulator, made by Mr. Fred. M. Locke, Victor, N. Y., for pressures of 20,000 volts. This insulator is 5-1/2 inches in diameter and 4-1/2 inches high. Mr. Locke reports that he has just finished over 30,000 of these insulators for power transmission lines in California, carrying potentials as high as 17,500 volts.

Figs. 1, 2 and 3.

Fig. 2 shows the steel pin with porcelain base, also manufactured by Mr. Locke, and Fig. 3 represents a four-pin upright side bracket, with indestructible pins, for attachment to the sides of buildings or similar places. The steel pin with porcelain base is designed for high voltage and other work.