Abstract: A mobile boom vehicle includes a boom assembly that supports and shifts equipment and personnel over a bridge. The boom assembly is coupled to the top of a frame that is sized to operate entirely within the width of a sidewalk. The mobile boom vehicle can, therefore, operate on a sidewalk bridge without obstructing bridge vehicular traffic. Outriggers are coupled to the frame and are capable of extending either over the top of a guardrail or horizontally from the top of the frame. A drive wheel is centered behind the rear end of the frame and lifts part of the frame off the bridge before moving the frame along the bridge. A pair of detachable guide wheels are extendable down below the frame at various distances for holding the mobile boom vehicle in a level position when the frame extends over the edge of a sidewalk. Two mobile boom vehicles can be located on an opposite sides of the bridge for support a basket that spans underneath the bridge.

Abstract: An aerial cable installation method uses a series of large-diameter capstan winches, placed at intermediate access points along a conduit lashed to a strand stretched between a series of poles, to pull a long run of cable through the conduit. Each capstan winch is suspended at an access opening in the cable adjoining a pole from the strand and from the pole. The capstan winch has alignment arms for supporting opposite portions of the conduit in tangential alignment with capstan wheel and guiding the cable on and off the wheel without overlapping. The conduit includes a slidable sleeve which encloses the cable within the access opening after cable is capstanned into the conduit. The slidable sleeve may be fixedly connected to the main conduit at one end but remains slidable at the opposite end to permit movement including expansion and contraction of the cable in the conduit.

Abstract: A fiber optic cable pulling method uses a series of large-diameter capstan winches placed at intermediate access points along the conduit through which multiple runs of fiber optic cable is to be pulled. Each capstan winch simultaneously pulls a portion of each of the cables through a segment of the conduit at a substantially uniform velocity and tension. The capstan wheel of each winch is sized frictionally to engage the cables without exceeding its minimum bending radius. The cables simultaneously wind around each capstan wheel. The winches are independently controlled to maintain pulling tension on each portion of the cable below a predetermined tension which, if exceeded, could damage the fiber optics in the cable. The capstan winches are spaced sufficiently close together to pull a portion of the cables in parallel through each conduit segment of a tension ordinarily less than the maximum tension provided by the capstan winches.

Abstract: A fiber optic cable pulling method and apparatus includes a series of large-diameter capstan winches placed at intermediate access points along the conduit through which the fiber optic cable is to be pulled. Each capstan winch pulls a portion of the cable through a segment of the conduit at a substantially uniform velocity. The capstan wheel of each winch is sized frictionally to engage the cable without exceeding its minimum bending radius. The winches are independently controlled by controllers which limit the rate of hydraulic fluid and its pressure flowing to the hydraulically powered winch, and thereby maintain pulling tension on each portion of the cable below a predetermined tension, if exceeded, which could damage the fiber optics in the cable. The capstan winches are spaced sufficiently close together so that the pulling tension necessary to pull a portion of cable through each conduit segment is ordinarily less than the tension provided by the capstan winches.

Abstract: A fiber optic cable pulling method and apparatus includes a series of large-diameter capstan winches placed at intermediate access points along the conduit through which the fiber optic cable is to be pulled. Each capstan winch pulls a portion of the cable through a segment of the conduit at a substantially uniform velocity. The capstan wheel of each winch is sized frictionally to engage the cable without exceeding its minimum bending radius. The winches are independently controlled by controllers which limit the rate of hydraulic fluid and its pressure flowing to the hydraulically powered winch, and thereby maintain pulling tension on each portion of the cable below a predetermined tension, if exceeded, which could damage the fiber optics in the cable. The capstan winches are spaced sufficiently close together so that the pulling tension necessary to pull a portion of cable through each conduit segment is ordinarily less than the tension provided by the capstan winches.

Abstract: A fiber optic cable pulling method includes a series of large-diameter capstan winches placed at intermediate access points along the conduit through which the fiber optic cable is to be pulled. Each capstan winch pulls a portion of the cable through a segment of the conduit at a substantially uniform velocity. The capstan wheel of each winch is sized frictionally to engage the cable without exceeding its minimum bending radius. The winches are independently controlled by controllers which limit the rate of hydraulic fluid and its pressure flowing to the hydraulically powered winch, and thereby maintain pulling tension on each portion of the cable below a predetermined tension, if exceeded, which could damage the fiber optics in the cable. The capstan winches are spaced sufficiently close together so that the pulling tension necessary to pull a portion of cable through each conduit segment is ordinarily less than the tension provided by the capstan winches.