Is this a new knot?

[vandervis]

Hi all,

A friend of mine came up with this knot (see attached jpegs) and he was wondering if it is an existing one or if he came up with a new knot. According to him you can tie it to a pole or rope and tighten it with one hand and undo it easily with one hand again.
If it is already existing can anyone tell me it?s name?

Thanks

[[Inkanyezi] gone]

No, it is not new, although its exact match might be more difficult to find, it is a variation of the Camel Hitch, ABoK #1741, and also the arborist knot #481 and #1744, and its principle is also applied in the Prusik. It is common to see these knots with a different turn, some extra turns or finished with a half hitch either direction, one of them resembling the cow hitch. It is a common application of general knowledge of the behavior of rope and slings.

[Dan_Lehman]

What Inkanyezi stated -- +1 .

Your friend's closure to the triple turns making the grip might work
better than those of the Camel Hitch, in which the turns are in the
same direction as the gripping ones.  (The Prusik [<- note spelling]
hitch is a little peculiar, in having two gripping coils -- one of which
is like that of the hitch presented here, and the other wraps in the
opposite direction (both in handedness and loading); in use,
the wrapping-away coil will extend and have some effect on the
wrapping-towards (load) coil, pushing it towards the load and
so slightly frustrating its gripping, until the first coil holds.

--dl*
====

[[Inkanyezi] gone]

The "Camel Hitch" is an expansion of the Rolling Hitch, and there are numerous variations on the theme.

http://en.wikipedia.org/wiki/Rolling_hitch