| 摘要 |
<p>PURPOSE:To prevent a jumper, a bird's nest-building material and the bird itself from grounding by mounting an insulation rod-shaped body and an insula tion cover to an upper part of the middle of the jumper wire. CONSTITUTION:A cylindrical insulation cover 3 is engaged to and inserted into the surrounding of an insulation static rod-shaped body 2 loosely so that it can be rotated freely and then clamps 6 and 7 for holding the jumper wire are mounted to insulators 4 and 5 which are provided at both edges of the insulation static rod-shaped body 2. When it is mounted to the upper part of the middle part of the jumper wire 10, a wire, etc. A which hangs down to contact only the peripheral surface of the cylindrical insulation cover 3 and does not contact the inside jumper wire 10 since there is the cylindrical insulation cover 3 at the upper part of the middle part of the jumper wire 10 positioned at the lower part even if the wire, etc., A of the nest-building material which is kept by a bird B, etc., in its mouth when perking on a steal tower arm 20, thus preventing grounding. Also, it can be used for any location regardless of the shape of the jumper wire 10, thus reinforcing the effect of the jumper wire 10.</p> |
