Publication: Electrical World
New York, NY, United States
In the construction of electric lines nothing is so essentially important as the insulation, for any leakage means so much loss in dollars and cents. High insulation is, therefore, a prime necessity, and much time and thought have been applied by various inventors to the solution of the problem of securing the most perfect results.
Mr. Frederick M. Locke, of Victor, N. Y., has applied his efforts to producing first-class insulating material and devices. The accompanying illustration shows a china insulator which has given excellent results. Its support is a steel pin, so designed and constructed as to give great strength and durability. It is free from tendency to rot, and does not weaken the cross-arm as wooden pins do, on account of the comparatively smaller hole. These insulators can be applied to the under side of cross-arms, when it is desired to increase the number of lines without adding to the number of cross-arms.
The triple petticoat insulator is made of the highest grade of china ware. It is 5-1/4 inches in diameter and 4 inches high, and its insulation has been tested up to as high as 85,000 volts.