| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform easily and completely the deburrings of the bolt inserting through holes drilled in the clevis portion of a jumper socket, by forming respectively square outside and circular inside portions in each of two bolt inserting through holes drilled in the clevis portion for holding in a sandwiching way an aluminum clamp therein. SOLUTION: A wire is anchored by a clamp (S), and then, a previously inserted aluminum clamp 2 is displaced to be joined in a pressing way to the wire. The aluminum clamp 2 is held in a sandwiching way by the clevis portion of a jumper socket 1 to be fastened to the clevis portion by a through bolt 3. The bolt 3 has a square portion adjacently to a spherical head portion 3a. The square portion of the bolt 3 is engaged with a square outside portion 1a of each of two bolt inserting circular through holes drilled in the clevis portion to prevent the bolt 3 from rotating accompanied by the rotation of a nut 4 when it is driven. Thereby, the deburrings of the bolt inserting through holes drilled in the clevis portion of the jumper socket 1 can be performed easily and safely.</p> |
