Blake knot

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Blake knot
Blake knot
Type Clamping knot
application Ascent and descent on the climbing rope
Ashley No.
English Blake's hitch
List of nodes

The Blake knot is a clamping knot that is used in rope-assisted tree climbing . Although it clamps securely, it is often secured with a stopper knot .

history

Heinz Prohaska first presented the knot in 1981. He called it a "tucked coil hitch", which is basically a variant of Clifford Ashley's # 1470 with multiple windings. In 1990 he described it again in the cave climbing magazine Nylon Highway . Separately, Jason Blake introduced the knot to the tree climbing world in 1994 in a letter to Arborist World magazine . The knot was henceforth spread among experts as Blake's hitch and became known under this name.

application

The knot can be used to ascend and descend the climbing rope.

In action climbing , the Blake knot is sometimes also used to stretch banners and the like. The loose end is passed through an eyelet and the knot is then wrapped around the first part of the rope. In this way it is easier to retighten than z. B. with the butterfly knot .

Knot

The left-hand Blake knot

Wrap the loose end around the climbing rope three and a half to six and a half times. Then run the end under the first two turns of the climbing rope and pull it out between the second and third turns. Make a stopper knot on the end and tighten it close to the windings.

In practice, it is helpful to wrap your thumb in the first two turns so that you can later thread the end more easily.

If the knot does not hold securely because of a slippery climbing rope, another wrap should be added. The end is still wedged under the last two wraps. If the "winding rope" does not hold well because it is z. B. is too rigid, add another winding and pinch the end underneath. This creates more “contact surface”, which the suspension rope can clamp better.

Alternatives

Grab handle " Blocker " according to ABoK # 505
  • The Prusik sling is used when climbing .
  • The Stopperstek is used with a rope strand in seafaring .
  • The FB tape clamp knot is also used with a tape sling .
  • The cross clamp knot is rarely used.
  • If the carabiner is to serve as a handle, a "blocker" must be wrapped around the rope with an accessory cord. The carabiner is only carried out on the first and last eye.

Web links

supporting documents

  1. ↑ Nylon Highway . No. 30 , 1990, pp. 3 ( caves.org [PDF; 1.5 MB ; accessed on October 16, 2015]).
  2. ↑ Blake's Hitch. In: Animated Knots by Grog. Retrieved October 16, 2015 .
  3. ↑ Mark Adams: Son of a Hitch: A Genealogy of Arborists' Climbing Hitches . In: Arborist News . April 2005 ( treebuzz.com [PDF; 2.4 MB ; accessed on October 16, 2015]).