Description
The principle may be described as ‘hand-to-hand’, like a sailor pulling on a rope. While one hand pulls the other changes position to pull in turn. The two hands represent the 2 jaws of the TIRFOR. They grip the wire rope without damaging it, and alternately pull it forward during the operation and hold it during reverse operation. The effort is transferred to the jaws by two levers, one for forward operation and the other for reverse operation. The load is held securely at all times.
