Just another example of a
true Zeppelin-like knot, a rope-made hinge where the two main bights of the two links are not hooked the one to the other, but connected through their tail pair, which play the role of the pivot.
A slightly different dressing of the same knot, is shown in the fourth picture. A great advantage of the Zeppelin bend, is that the "pivot" remains almost perpendicular to the axis of the loading - therefore it confronts
shear forces mainly rather than oblique friction forces. When this beneficial orientation is compromised, and the pair of the tails is not at a right angle to the pair of the standing ends ( like it happens in the bend shown in this post), the "pivot" has to withstand stronger friction forces, and function as a "wedge" - just as it happens to most other bends.
I publish it to show, just another time, what is the main characteristic of the genuine Zeppelin knot, the Zeppelin bend - and what the
fake, so-called "Zeppelin loop" does not have... while the loops presented in (1) do . However, I have seen that it has recently became something of an easy ( and cheap !
) fashion, for people that have not been able to understand what a Zeppelin-like knot is, to advocate this fake / so-called "Zeppelin loop" here and there in the Web, in poorly written "so-called articles" like this lamentable one :
http://en.wikipedia.org/wiki/Zeppelin_loop ( Notice that, in this ONE SINGLE LINE "ARTICLE", there is only ONE SINGLE REFERENCE - a truly
notable contribution to the case of the so-called "Zeppelin-loop", indeed !
1.
http://igkt.net/sm/index.php?topic=4095.0