Electrose H-T suspension

HIGH-TENSION TRANSMISSION LINE INSULATION.

A patent recently issued to Mr. Louis Steinberger, of Brooklyn, N. Y., covers a system of insulation for high-potential electric conductors to be used for various purposes, such as energy transmission lines, and for guy wires or cables employed as stays for towers or poles, masts and other supports used in wireless telegraphy and telephony, as well as in regular commercial work. It represents a marked departure in the development of insulator systems.

High-Tension Insulation.

The system comprehends a series of insulators, of a so-called thimble type and a series of other insulators of a rod type, the thimble-type insulators being alternated with the rod-type insulators, and together therewith forming a flexible chain of parts which may be extended indefinitely. The under surface of the thimble-type insulators will remain at all times comparatively dry; each thimble-type insulator acts like an umbrella, covering the upper end of the rod-type insulator below it, and connected therewith, thereby keeping it dry under the most unfavorable conditions (as, for instance, when all of the insulators are subjected to the action of a driving rain), hence the group of insulators must always afford adequate insulation for all practical purposes. The insulator will practically prevent leakage and undesirable grounding of the circuit either from conductors or from supporting structures for the same.

The various parts of the insulator may be detached and replaced by other parts, and the total number of parts may be increased or diminished at will after the original structure is built, this feature being especially important in instances where, after the installation of a conductor, the voltage is to be increased. The voltage may be increased to any desired extent, the various mechanical parts which are employed being of comparatively small size, light weight and low cost. Not the least important feature of the insulator equipment is the flexibility of the chain of units; the structure as a whole, when in operation, is under spring tension, thereby insuring more or less resiliency, so that the complete structure is relieved in all of its parts, as well as in its entirety, from the effects of sudden and abrupt accidental strains usually so destructive to mechanism of this kind.

The arrangement proposed by the inventor is shown in the accompanying illustration, taken from a patent granted to Mr. Steinberger on Feb. 15, 1910.