A new type of insulator for high-tension transmission lines

Link Insulators. Suspension and Strain Type. The transmission of large amounts of power over long distances has reached such proportions that the voltage necessary to transmit this energy makes the problem of line insulation difficult. The so-called “pin” type of insulator has been enlarged to meet the greater demands until it has approached, if not already passed, the limits of good construction. Mr. Buck has given this matter a great deal of study in his high-potential transmission work, and being dissatisfied with the mechanical features of a pin insulator, has devised a method of line construction involving the use of “suspension” and “strain” insulators. The suspension insulators support the line from above, hanging vertically beneath the cross-arm (or other point of suspension). The strain insulators are used at turns and at intervals of say, every mile, to support and “anchor” the line, also as pull-off insulators on curves and to dead-end lines.