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Listed under forestry in our local (New Zealand) online trading site here



Described as follows:

professional porta wrap
a must tool for dropping branches an chog [sic] from trees safely
all stainless construction with 3 inch tube

Does anyone know what this is, how it is used and why I would need/want one?
 

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Thanks Dave, you're absolutely right. We've entered the interesting world of the arborist! and if I believe what I read, there seems to be a lot of innovation in this field.
I love that this is just a clever rigging device which works on friction and gravity. I found a source for it here in NZ @ a company called treetools

The website comes with a pdf instruction booklet

Here is their description:

"Used for lowering heavy branches or logs, the stainless Port-a-Wrap III is a friction device that enables a single person to control loads many times their own weight. By taking wraps with the rigging line around the Port-a-Wrap, friction is applied to the rope; the more wraps taken, the more friction applied. Compared to the traditional method of taking wraps around the trunk of the tree, the Port-a-Wrap provides more consistent friction that doesn't vary from one tree to the next, can be tied off to allow the worker to let go and walk away from the rope, can be combined with a fiddle block to hoist branches, and does not damage the tree."

Oh, dear, what's a fiddle block…
 

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This works on the same principal as a capstan winch except the drum isn't spinning.

I worked on mineral exploration drills, & the capstan was used on a drive hammer for

pounding down casings.
 

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Discussion Starter · #7 ·
Dick - thanks for that - so that's how a capstan winch works!

Craig - Cant hooks are really useful ( so would horses). I personally prefer the peavey, which is the same idea but it has a pointy end which prevents damage to the log ( not a huge issue when the bark is on, but when log building, the log is usually peeled)

I'm partial to the peavey partly because I already have one which I built myself:
 
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