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Help me identify 'Iron Knot'. A 'self releasing knot'.
I hope someone here can help me with instructions for a knot.
A few years ago, a guy showed me what he called an 'Iron Knot'. It will hold any weight, even up to the breaking point of the rope, but when the tension is released the knot comes apart. Useful for lowering buckets off a roof for example. When the bucket lands on the ground, the knot falls open and you can pull the rope back up. It was practical and elegantly simple. And I forgot how to make it before I made notes. I'd be grateful for any help so I can stop kicking myself. Best, and thanks, DB. |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Jul 5, 8:21*pm, DantesBeard wrote:
I hope someone here can help me with instructions for a knot. A few years ago, a guy showed me what he called an 'Iron Knot'. It will hold any weight, even up to the breaking point of the rope, but when the tension is released the knot comes apart. Useful for lowering buckets off a roof for example. When the bucket lands on the ground, the knot falls open and you can pull the rope back up. It was practical and elegantly simple. And I forgot how to make it before I made notes. I'd be grateful for any help so I can stop kicking myself. Best, and thanks, DB. You may have seen a half hitch arranged in a certain way, such that its nipped end is placed on the far side of the object. Something like this: http://www.ruckus.org/albums/album26/half_hitch.gif Depending on the rope and the object, it may not spring open and self release when you want. And using such a trick may result in a spilled load. You may also want to look at this hitch: http://www.geocities.com/roo_two/tumblehitch.html |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Jul 6, 9:54 am, wrote:
On Jul 5, 8:21 pm, DantesBeard wrote: I hope someone here can help me with instructions for a knot. A few years ago, a guy showed me what he called an 'Iron Knot'. It will hold any weight, even up to the breaking point of the rope, but when the tension is released the knot comes apart. Useful for lowering buckets off a roof for example. When the bucket lands on the ground, the knot falls open and you can pull the rope back up. It was practical and elegantly simple. And I forgot how to make it before I made notes. I'd be grateful for any help so I can stop kicking myself. Best, and thanks, DB. You may have seen a half hitch arranged in a certain way, such that its nipped end is placed on the far side of the object. Something like this: http://www.ruckus.org/albums/album26/half_hitch.gif Depending on the rope and the object, it may not spring open and self release when you want. And using such a trick may result in a spilled load. You may also want to look at this hitch: http://www.geocities.com/roo_two/tumblehitch.html Thank you for the leads. the Tumblehitch is similar to what I can recall, but you have to draw the opposite end to release it. I think the Iron Knot did have a loop which was nipped or trapped. I think I made a comment at the time that it seemed similar to how I was taught to tie a Bowline with one hand, the 'standing part remaining passive' just like in the Tumblehitch instructions. Thanks again, The search continues... DB |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Jul 7, 5:05*pm, DantesBeard wrote:
On Jul 6, 9:54 am, wrote: On Jul 5, 8:21 pm, DantesBeard wrote: I hope someone here can help me with instructions for a knot. A few years ago, a guy showed me what he called an 'Iron Knot'. It will hold any weight, even up to the breaking point of the rope, but when the tension is released the knot comes apart. Useful for lowering buckets off a roof for example. When the bucket lands on the ground, the knot falls open and you can pull the rope back up. It was practical and elegantly simple. And I forgot how to make it before I made notes. I'd be grateful for any help so I can stop kicking myself. Best, and thanks, DB. You may have seen a half hitch arranged in a certain way, such that its nipped end is placed on the far side of the object. *Something like this: http://www.ruckus.org/albums/album26/half_hitch.gif Depending on the rope and the object, it may not spring open and self release when you want. *And using such a trick may result in a spilled load. You may also want to look at this hitch: http://www.geocities.com/roo_two/tumblehitch.html Thank you for the leads. the Tumblehitch is similar to what I can recall, but you have to draw the opposite end to release it. I think the Iron Knot did have a loop which was nipped or trapped. I think I made a comment at the time that it seemed similar to how I was taught to tie a Bowline with one hand, the 'standing part remaining passive' just like in the Tumblehitch instructions. Thanks again, The search continues... DB- Hide quoted text - - Show quoted text - Since you bring up the Bowline, another knot form that I had in mind was a partial or uncompleted bowline. It is quite unstable, but can be made a little more stable in pliable rope by winding the rabbit up the tree instead of going down the hole. It's related to the bell- ringer's knot discussed he http://www.geocities.com/roo_two/spanloop.html see also: http://www.geocities.com/roo_two/bowline.html (second step) |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Wed, 08 Jul 2009 14:52:57 -0400, F Long
wrote: On Wed, 8 Jul 2009 06:51:54 -0700 (PDT), wrote: On Jul 7, 5:05*pm, DantesBeard wrote: On Jul 6, 9:54 am, wrote: On Jul 5, 8:21 pm, DantesBeard wrote: I hope someone here can help me with instructions for a knot. A few years ago, a guy showed me what he called an 'Iron Knot'. It will hold any weight, even up to the breaking point of the rope, but when the tension is released the knot comes apart. Useful for lowering buckets off a roof for example. When the bucket lands on the ground, the knot falls open and you can pull the rope back up. It was practical and elegantly simple. And I forgot how to make it before I made notes. I'd be grateful for any help so I can stop kicking myself. Best, and thanks, DB. You may have seen a half hitch arranged in a certain way, such that its nipped end is placed on the far side of the object. *Something like this: http://www.ruckus.org/albums/album26/half_hitch.gif Depending on the rope and the object, it may not spring open and self release when you want. *And using such a trick may result in a spilled load. You may also want to look at this hitch: http://www.geocities.com/roo_two/tumblehitch.html Thank you for the leads. the Tumblehitch is similar to what I can recall, but you have to draw the opposite end to release it. I think the Iron Knot did have a loop which was nipped or trapped. I think I made a comment at the time that it seemed similar to how I was taught to tie a Bowline with one hand, the 'standing part remaining passive' just like in the Tumblehitch instructions. Thanks again, The search continues... DB- Hide quoted text - - Show quoted text - Since you bring up the Bowline, another knot form that I had in mind was a partial or uncompleted bowline. It is quite unstable, but can be made a little more stable in pliable rope by winding the rabbit up the tree instead of going down the hole. It's related to the bell- ringer's knot discussed he http://www.geocities.com/roo_two/spanloop.html see also: http://www.geocities.com/roo_two/bowline.html (second step) Hmn, earlier post came untied. Have you considered the Awning Hitch? |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Jul 8, 1:43*pm, F Long wrote:
Hmn, earlier post came untied. Have you considered the Awning Hitch?- Hide quoted text - Could you post an image link or a description so as there is no confusion about your candidate for a knot that can be released from afar when not under tension? |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Wed, 8 Jul 2009 13:55:08 -0700 (PDT),
wrote: On Jul 8, 1:43*pm, F Long wrote: Hmn, earlier post came untied. Have you considered the Awning Hitch?- Hide quoted text - Could you post an image link or a description so as there is no confusion about your candidate for a knot that can be released from afar when not under tension? ABOK 83 |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Jul 9, 12:24*pm, F Long wrote:
ABOK 83 Perhaps it'd work better in old frictive rope, but in modern rope, I have trouble making ABOK 83 hold anything more than insignificant loads. |
Help me identify 'Iron Knot'. A 'self releasing knot'.
On Jul 8, 9:51*am, wrote:
Since you bring up the Bowline, another knot form that I had in mind was a partial or uncompleted bowline. *It is quite unstable, but can be made a little more stable in pliable rope by winding the rabbit up the tree instead of going down the hole. * It's related to the bell- ringer's knot discussed he I think that this is on the right track, although it would be nice to somehow nail the origin of this "Iron Knot". There is some variance to how well the Bellringer's knot can perform. One way to I think improve both the knot's holding AND releasing, and get some better wear resistance to boot, is to make a fixed eyeknot in the end of the line, and to size this so that its double strands will be what bear the load, and its bight-end will be what is nipped by that Bowlinesque turn -- the twin tension on the bight will better resist capsizing forces of the nip, and should maybe also better help spring apart and better free themselves with some helpful rope shaking. The pre-tied eyeknot just makes this twin-loaded bight possible, vs. trying some other way of involving multiple strands in the nipping turn. Maybe works best if minimal bight-end is brought through the nip (set & load carefully). I just tried playing around with some other constructs, and there seemed an annoying risk that the release wouldn't go as hoped, and one would end up with a simple but at least some-force-sustaining knot in the rope when one wanted it to come free. (easily freed by a groundman) (Heck, using 3/4" manila, hoisting 62.5# of wgt.s, I ended up loosening an Overhand eyeknot in this system before I shook free the nip !! HUH?!) --dl* ==== |
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