. The Street railway journal . rability of having apparatus installed according to a layoutadapted to the greatest possible percentage of the total num-ber of cars maintained. ♦-♦-» — NEW TYPE OF INSULATORS FOR HIGH TENSIONRAILWAYS The through run between Dayton and Toledo over theDayton & Troy, Western Ohio and Toledo Urban & Inter-urban lines has proved so successful that the companies haveunited in an agreement to purchase ten new cars at once tobe used exclusively in this service. The Vereinigte Isolatorenwerke Actiengesellschaft, of Ber-lin-Pankow, Germany, whose pioneer work in high-tens
. The Street railway journal . rability of having apparatus installed according to a layoutadapted to the greatest possible percentage of the total num-ber of cars maintained. ♦-♦-» — NEW TYPE OF INSULATORS FOR HIGH TENSIONRAILWAYS The through run between Dayton and Toledo over theDayton & Troy, Western Ohio and Toledo Urban & Inter-urban lines has proved so successful that the companies haveunited in an agreement to purchase ten new cars at once tobe used exclusively in this service. The Vereinigte Isolatorenwerke Actiengesellschaft, of Ber-lin-Pankow, Germany, whose pioneer work in high-tensoninsulation was described in the Aug. 11, 1906, issue of thispaper, has just brought out a line of insulators for high-potential railway service. They are made under the Klein-steuber patents. The metal cap in these insulators is distinctfrom the bell which is made of insulating material and ismolded into a threaded ring which screws into the cap. Thisgives a long distance between the cap and the insulated bolt. Streit FIG. 1.—STRAIGHT LINE HANGER and reduces surface leakage. Between the head of the in-sulator bolt and the metal cap there is a disc of insulatingmaterial. The lower end of the bolt varies in form accordingto the type of suspension adopted for the wire. Fig. i showsan insulator used on tangents, and Fig. 2 one for curves. Theinsulation of the trolley wire from the line insulator suspen-sion is really double, first, because the insulator bolt is moldedin insulating material, and second, because the bolt is aLsosurrounded by a housing of insulating material. During a dry test of the insulator shown in Fig. i, no arcbetween the trolley wire and suspension took place until
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
