| 摘要 |
<p>Bundle block having plurality of axially aligned sheaves for simultaneously stringing two or more conductors, with means for receiving a pilot or pulling line from a helicopter and guiding it over the outside conductor sheave or sheaves and onto the center or pulling line sheave and a guard assembly for preventing further axial inward movement of the pilot or pulling line onto the conductor sheave or sheaves mounted inwardly of the center or pulling line sheave.</p> |
