IGKT – New Knot Investigation
Hello,
my name is Ettore Bergadano and I would like to ask the IGKT community for help in identifying and evaluating a knot that I have been using and studying for some time.
The knot has a one-way locking behaviour: the rope can slide relatively freely in one direction, while movement in the opposite direction causes the structure to tighten and lock.
I first documented this knot on 5 June 2006. I have now prepared a technical note and a demonstration video and deposited them on Zenodo in order to create a permanent, dated and citable record.
Zenodo DOI: 10.5281/zenodo.22809188
At this stage I do not want to claim that the knot is necessarily new or that no equivalent structure has previously existed. I would particularly appreciate the knowledge of IGKT members in determining whether the same knot, or a substantially equivalent structure, has already been documented.
I would be very interested to know:
Is this knot already known under another name?
Is there an equivalent or closely related knot in the Ashley Book of Knots or another historical source?
Are there publications or examples predating my documentation?
How would you classify this knot structurally and functionally?
The Zenodo record contains a PDF with the description and photographs, together with a video showing how the knot works.
Any references, comparisons or comments would be very welcome.
Thank you,
Ettore Bergadano
Greetings Mr 'Ettore.bergadano',
Your presentation is a 'hitch' - specifically, a 'Slide and Grip Hitch'.
All hitches form around a 'host' - in your case, the 'host' is the parent rope + the carabiner (although the rope is the principal host).
There are many slide and grip hitches discovered and used by tree climbing arborists.
Note that you could also use sewn accessory cord (sometimes referred to as a 'bound loop'). Once you have figured out the optimal number of turns/wraps made around the 'host' - you could purchase the correct length sewn cord.
There would be an 'optimal' configuration for a particular host rope diameter (relative to the hitching cord diameter).
I haven't seen this particular geometric form, but you need to be patient while people check - which could take some time...
Example of a sewn bound loop (sling)
?! There's no accommodation for the curving
of the wraps of this hitch by a sewn sling.
Alas, I didn't copy the knot image until now;
I'll give it a try maybe in some couple-few
combinations. (I have been playing around
with friction hitches, and one using a 'biner,
coincidentally.)
Thanks.
(-;
Yes, that's true; whether using a tied cord or a sewn sling, you need to keep the knot or the stitching away from the carabiner. So, I believe it works with a sewn loop sling, but with a cord like the one shown in the picture, you have to insert the loop section near the stitching last. But I heve not tryied it
I have tyied, and is possible also with the sewn bound loop (sling) show in the picture.
