Knots/Loop knots/Adjustable grip hitch
|Adjustable grip hitch|
|Names||Adjustable grip hitch, Adjustable hitch|
|Typical use||Keeping a rope under tension|
The adjustable grip hitch is a simple and useful friction hitch which may easily be shifted up and down the rope while slack. It will hold fast when loaded, but slip when shock loaded until tension is relieved enough for it to again hold fast.
This knot is also called "Adjustable Loop" 
- Knots & Ropework, The Ultimate Encyclodpedia of; by Geoffrey Budworth, ISBN 1-84309-138-0