Fred Locke's M-2998.

INSULATOR FOR HIGH-VOLTAGE TRANSMISSION

With the rise in transmission line voltage insulation problems have been introduced of no mean proportions in long-distance power transmission engineering, and to meet these new conditions there has been worked out special types of pole-line insulators. An illustration of this class is shown herewith. It comprises the latest type of these insulators, and is placed alongside a standard glass telegraph insulator for the purpose of showing their relative size. The former is 14 ins. across the hood, 11% ins. high and weighs 18 lbs. The manufacturer, Fred. M. Locke, of Victor, N. Y., says that the insulator is made of a special mixture of clay, and that it will withstand a test voltage of 160,000 and a working voltage of 80,000.