Cable pulling system
View Patent ↗The cable pulling system includes a jet loop for pulling cable through a cable tray in a structure, such as a building. The jet loop is physically coupled to a bracket, which is clamped to the cable tray. The bracket uses clamp wing nuts matched to threaded clamp bolts to compressively hold upward-extending portions of the U-shaped members of the cable tray between clamp plates and downward-extending portions of either end of the bracket. The clamp plates and the downward-extending portions of either end of the bracket have matching pairs of indentations whose center axes and edges align with one another and with the uppermost two wires on either side of the cable tray. The jet loop can be moved in either of two opposite directions and is removably coupled to a cable or bundle of cables to pull the cables through the cable tray.
1. A cable pulling system for pulling cable through a cable tray, comprising:
a plurality of elongate brackets, each of the brackets having downward extending portions at opposite ends adapted for physically coupling the bracket to the cable tray, wherein each of the brackets comprises a central portion having a length dimensioned and configured for extending across an open top of the cable tray;
a jet loop supported by the plurality of brackets, the jet loop being rotatable and adapted for having the cable attached thereto, the cable being pulled through the tray by rotation of the jet loop;
an eyelet bolt attached to each of the brackets, the jet loop passing through the eyes of the eyelet bolts, wherein the eyelet bolts are fastened to the central portion of each of the brackets so that the eyes of the eyelet bolts extend down into the tray, whereby the jet loop is suspended from the brackets;
a plurality of clamp plates corresponding in number to the downward extending portions of the brackets, each of the downward extending portions having one of the clamp plates corresponding therewith, the clamp plates and the downward extending portions of the brackets having opposing faces having complementary indentations formed therein adapted for receiving wires forming sides of the cable tray therein;
a plurality of fasteners clamping the clamp plates and the downward extending portion of said brackets together on opposite sides of the cable tray;
a horizontal roller extending between the downward extending portions of one of said brackets, the roller having a hollow central shaft; and
a bolt extending through the hollow shaft and through opposing pairs of said clamp plates and the downward extending portion of said brackets, the bolt being selectively fastened thereto, the horizontal roller easing transition of the cable through elevation changes in the cable tray.
2. The cable pulling system according to claim 1 , wherein the central portion of said bracket has a plurality of spaced apart apertures defined therein adapted for receiving said eyebolts, whereby said jet loop may be selectively positioned across the width of the cable tray.
3. The cable pulling system according to claim 2 , further comprising:
a vertical roller having a hollow central shaft;
a roller plate adapted for placement under the cable tray; and
a bolt extending through the roller plate, the hollow shaft, and one of the apertures in the central portion of one of said brackets, the bolt being selectively fastened thereto, the vertical roller easing transition of the cable through curves in the cable tray.
4. The cable pulling system according to claim 1 , wherein the central portion of each said bracket comprises a female end defining an elongated track and a male end having an elongated blade slidable in the track, the female end having an elongated slot defined therein and the male end having spaced apart apertures defined therein alignable with the elongated slot, said eyelet bolts being extendable through the elongated slot and one of the apertures in the male end in order to adjust the length of said brackets to the width of the cable tray when said eyelet bolts are fastened to the central portion of said brackets.
5. The cable pulling system according to claim 1 , wherein the jet loop is made from paracord.
6. A cable pulling system for pulling cable, comprising:
a cable tray having a wire frame defining a bottom and opposing sides extending from the bottom, the opposing sides defining a width of the cable tray;
a plurality of elongate brackets, each of the brackets having downward extending portions at opposite ends adapted for physically coupling the bracket to the cable tray; and
a jet loop supported by the plurality of brackets, the jet loop being rotatable and adapted for having the cable attached thereto, the cable being pulled through the tray by rotation of the jet loop.
7. The cable pulling system according to claim 6 , further comprising an eyelet bolt attached to each of the brackets, the jet loop passing through the eyes of the eyelet bolts.
8. The cable pulling system according to claim 7 , wherein each said bracket comprises a central portion having a length dimensioned and configured for extending across an open top of the cable tray, said eyelet bolts being fastened to the central portion of each said bracket so that the eyes of the eyelet bolts extend down into the tray, whereby said jet loop is suspended from said brackets.
9. The cable pulling system according to claim 8 , further comprising:
a plurality of clamp plates corresponding in number to the downward extending portions of said brackets, each of the downward extending portions having one of the clamp plates corresponding therewith, the clamp plates and the downward extending portions of said brackets having opposing faces having complementary indentations formed therein for receiving the wires forming sides of the cable tray therein; and
a plurality of fasteners clamping the clamp plates and the downward extending portion of said brackets together on opposite sides of the cable tray.
10. The cable pulling system according to claim 9 , further comprising:
a horizontal roller extending between the downward extending portions of one of said brackets, the roller having a hollow central shaft; and
a bolt extending through the hollow shaft and through opposing pairs of said clamp plates and the downward extending portion of said brackets, the bolt being selectively fastened thereto, the horizontal roller easing transition of the cable through elevation changes in the cable tray.
11. The cable pulling system according to claim 8 , wherein the central portion of said bracket has a plurality of spaced apart apertures defined therein adapted for receiving said eyebolts, whereby said jet loop may be selectively positioned across the width of the cable tray.
12. The cable pulling system according to claim 2 , further comprising:
a vertical roller having a hollow central shaft;
a roller plate placed under the cable tray; and
a bolt extending through the roller plate, the hollow shaft, and one of the apertures in the central portion of one of said brackets, the bolt being selectively fastened thereto, the vertical roller easing transition of the cable through curves in the cable tray.
13. The cable pulling system according to claim 8 , wherein the central portion of each said bracket comprises a female end defining an elongated track and a male end having an elongated blade slidable in the track, the female end having an elongated slot defined therein and the male end having spaced apart apertures defined therein alignable with the elongated slot, said eyelet bolts being extendable through the elongated slot and one of the apertures in the male end in order to adjust the length of said brackets to the width of the cable tray when said eyelet bolts are fastened to the central portion of said brackets.
14. The cable pulling system according to claim 6 , wherein the jet loop is made from paracord.
15. A cable pulling system for pulling cable through a cable tray, comprising:
a plurality of elongate brackets, each of the brackets having downward extending portions at opposite ends adapted for physically coupling the bracket to the cable tray, wherein each of the brackets comprises a central portion having a length dimensioned and configured for extending across an open top of the cable tray, further wherein the central portion of each of the brackets has a plurality of spaced apart apertures defined therein;
a jet loop supported by the plurality of brackets, the jet loop being rotatable and adapted for having the cable attached thereto, the cable being pulled through the tray by rotation of the jet loop;
an eyelet bolt attached to each of the brackets, the jet loop passing through the eyes of the eyelet bolts, wherein the eyelet bolts are fastened to the central portion of each of the brackets so that the eyes of the eyelet bolts extend down into the tray, whereby the jet loop is suspended from the brackets and is selectively positioned across the width of the cable tray.