| 摘要 |
An attachment for single strand and multi-strand stringing blocks used during the stringing of high tension electrical wires between electrical suspension towers. Since electrical towers are not all disposed in a linear array an angled pull has a tendency to cause a lead cable to jump out of a groove in a pulley sheave on the stringing block. When in a first position roller guides on a stringing block attachment engage the lead cable and prevent it from sliding out of the groove in the pulley sheave. In a second position the rollers are retracted so they will not engage the conductor wire which follows immediately behind the lead cable. Support arms for the rollers are rotatably attached to the framework of the attachment which is mounted on the carriage of the stringing block.
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