Abstract: For use in energized high voltage pole line maintenance work, a vertical mast carrying a temporary crossarm is adjustably attached to an adapter sleeve mounted in lieu of one of the buckets of a dual-bucket truck on the self-leveling cross shaft, so that the axis of the sleeve is always vertically disposed. The mast is slidingly received and movable lengthwise within the adapter sleeve. The lineman in the bucket first maneuvers the boom carrying the bucket and the temporary crossarm to a desired position usually adjacent to the pole, under the high voltage line conductor(s). He then, by power means, raises the mast carrying the temporary crossarm, thereby lifting the conductor(s) above the pole top. In so lifting the mast, each of the line conductors drops into a receiving bracket on the temporary crossarm and is automatically locked therein. A quick disconnect for releasing the crossarm from the mast is provided controlled by a lineman on the ground.

Abstract: A device for cleaning the surface of aerial conductors comprises a rotary brush having a circumferential groove, a fluid- powered motor for driving the brush rotationally, and a J-hook hanger guide one end of which is secured to the power drive housing and the other end of which is adapted to be hooked over the cable. The hanger guide is so shaped and aligned relative to the rotary brush that when the hanger guide is hooked over and supported on the conductor, the conductor is engaged by the brush bristles within the circumferential groove of the rotary brush. The assembly device is mounted at one end of a hot stick which is manipulated by a single lineman to slide the power-driven brush along the conductor in a first direction to clean one-half of the peripheral surface of the conductor. Then the device is turned through 180.degree. and slid along the conductor in the opposite direction to clean the other half of the peripheral surface.