The TIRVIT is also sold under the trademark EASYPULL
® in North America.
Principle of Tirvit:
The Tirvit consists of a guide frame to which a lever is hinged, operating
alternately two self gripping jaws which hold the wire rope.
Each movement of the lever moves the jaws in
opposite directions on the frame. One jaw pulls the cable or wire rope
whilst the other moves freely in the other direction to grip it in its turn
when the operation of the lever is reversed.
Main applications:
Electricity and telephone:
Tensioning electrical conductors, telephone lines and long span lines.
Agriculture and forestry:
Tensioning netting, fencing stays and fruit support wires (e.g. vines).
Pulling out stakes, uprooting stumps, bushes etc. together with certain
light handling operations.
Accessories:
For certain operations, it is sometimes useful to employ a separate
self-gripping jaw fitting with a shackle.
Options: The TIRVIT F3 can be supplied fitted with an incorporated load indicator to allow the operator to check the pulling effort.
Specification (conversions from metric to U.S. measurements are approximate):
| Model | Pulling capacity | Wire rope dia. | Weight | |||
| kg | lbs | mm | ins | kg | lbs | |
| F2 | 400 | 880 | from 5 to 8 | 0.2 to 0.31 | 4 | 8.8 |
| F3 | 600 | 1320 | from 7 to 15 | 0.2 to 0.59 | 5.2 | 11.5 |
| F4 | 800 | 1760 | from 14 to 18 | 0.55 to 0.70 | 6.2 | 13.7 |
| TIROPE | 500 | 1100 | 12.5 | 0.50 | 4.2 | 9.3 |
