Tumble hitch

Tumble hitch
Names	Tumble hitch, a better Highwayman's hitch, Bank Robbers Knot, Getaway hitch or Quick-release knot
Category	Hitch
Related	Highwayman's hitch, Mooring hitch
Releasing	Non-jamming
Typical use	Quick-release, draw loop hitch
Caveat	potentially unstable

The tumble hitch is a quick-release draw loop knot used for temporarily securing a rope such that it can be released easily and cleanly. The hitch can be untied with a tug of the working end, even when under tension. The tumble hitch can be tied in the middle of a rope, and so the working end does not need to be passed around the anchor when tying or releasing.

The Notable Knot Index recommends the tumble hitch as a more stable hitch than the highwayman's hitch. It is a similar hitch, but less prone to capsizing because the standing part remains passive and the locking is done by two successive bights of the working part being pushed into the previous bight thus locking it.

Usually two locking turns (as in the pictures here) suffice for a knot secure enough for most purposes, but more may be added as needed. The way the working part wraps the standing part can also vary to offer higher levels of strength. Several variations of the tumble hitch exist:

Tying sequence for one variant of the tumble hitch:

Place bight 1 over a beam

Cross the working part over the standing part, under beam, up through bight 1

Pass the working part around the hitch, and up through bight 2

Tighten by pulling standing part

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Wikipedia