Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Cable lashing
Patent
1994-11-07
1996-06-11
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Cable lashing
E21C 2916
Patent
active
055248691
ABSTRACT:
An overflash jig for pulling a cable along a support line via a tow rope such that when the tow rope is slack, the overlash jig does not retreat along the support line thereby slacking the cable. The jig includes a body having a pair of side plates and a pair of rollers rotatably mounted therebetween for engaging the support line. The overlash jig also includes fixed and movable brake shoes for frictionally engaging the support line and a coil spring for urging the movable brake shoe toward the support line. A plurality of pulleys interact with a rope attached to the tow rope to compress the coil spring when tension is applied to the rope. As the spring is depressed, the movable brake shoe moves away from the support line, and the overlash jig may be pulled along the support line. The tow rope may also be detached from the pulleys and attached to the body to apply tension to the cable while the overlash jig is maneuvered around an obstacle, such as a utility pole. Inasmuch as the support line is trapped between the fixed brake shoe, movable brake shoe, and side plates, the movable brake shoe is completely removed from the overlash jig to permit the overlash jig to be removed from the support line.
REFERENCES:
patent: 2613257 (1952-10-01), Wollet
patent: 3134575 (1964-05-01), Walter
patent: 3596878 (1971-08-01), Parsen
patent: 3672636 (1972-06-01), Parsen
patent: 3861650 (1975-01-01), Jackson
patent: 5040771 (1991-08-01), Spell
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