| Topic: |
Science > Physics |
| User: |
"Gordon" |
| Date: |
22 Jan 2008 10:14:39 AM |
| Object: |
Rope knot |
I recently watched a man in a lift bucket remove tree limbs that
had broken in an ice storm. He was removing some very large limbs
that were hanging, partially broken, over a neighbor's house.
He maneuvered his lift bucket into position and tied a rope to
the limb in two places, then swung his lift bucket over to the
fracture area and used a chain saw to cut the limb free.
He then operated the lift bucket such as to raise the severed
limb, then move it horizontally out over an empty space in the
yard. Then he did something that I couldn't figure out. Somehow
he caused the two ropes that were supporting the severed limb to
untie themselves at the point where they were tied to the limb.
The limb then fell to the ground and the man then returned his
lift bucket to cut off another limb.
How did he manage to untie these two ropes without being closer
than about 15 feet from the knot? These two ropes were tied to
the limb such as to form an inverted V with the two ends tied to
the limb, several feet apart and the center of the V secured to
the lift bucket.
The only thing I can figure out is that he used some form of
mental telepathy to cause the two rope ends to untie themselves
simultaneously and let the limb drop. ;-) There has to be a
better explanation.
.
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| User: "Vince Morgan vinharAtHereoptusnet.com.au" |
|
| Title: Re: Rope knot |
22 Jan 2008 09:59:21 PM |
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"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com...
The only thing I can figure out is that he used some form of
mental telepathy to cause the two rope ends to untie themselves
simultaneously and let the limb drop. ;-) There has to be a
better explanation.
As a boy I used to wonder at persons doing things that seemed to defy what I
thought could not be done. I'd spend days, weeks or years wondering
sometimes. Over time I gradually developed a method that has proven
invaluable. It requires cooperation, which isn't always forthcoming, but
usually it works very well.
Find the guy and ask him.
And, if I had written this post myself, I'd come back and tell everyone what
I'd just learned.
Regards,
Vince
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| User: "Gordon" |
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| Title: Re: Rope knot |
23 Jan 2008 08:34:46 AM |
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On Wed, 23 Jan 2008 13:59:21 +1000, "Vince Morgan"
<vinharAtHereoptusnet.com.au> wrote:
"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com...
The only thing I can figure out is that he used some form of
mental telepathy to cause the two rope ends to untie themselves
simultaneously and let the limb drop. ;-) There has to be a
better explanation.
As a boy I used to wonder at persons doing things that seemed to defy what I
thought could not be done. I'd spend days, weeks or years wondering
sometimes. Over time I gradually developed a method that has proven
invaluable. It requires cooperation, which isn't always forthcoming, but
usually it works very well.
Find the guy and ask him.
And, if I had written this post myself, I'd come back and tell everyone what
I'd just learned.
Regards,
Vince
Good points, Vince, but the limb removal crew left the area as
soon as the job was finished and I have no idea where to find
them.
Gordon
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| User: "Androcles" |
|
| Title: Re: Rope knot |
22 Jan 2008 01:43:19 PM |
|
|
"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com...
|I recently watched a man in a lift bucket remove tree limbs that
| had broken in an ice storm. He was removing some very large limbs
| that were hanging, partially broken, over a neighbor's house.
|
| He maneuvered his lift bucket into position and tied a rope to
| the limb in two places, then swung his lift bucket over to the
| fracture area and used a chain saw to cut the limb free.
|
| He then operated the lift bucket such as to raise the severed
| limb, then move it horizontally out over an empty space in the
| yard. Then he did something that I couldn't figure out. Somehow
| he caused the two ropes that were supporting the severed limb to
| untie themselves at the point where they were tied to the limb.
| The limb then fell to the ground and the man then returned his
| lift bucket to cut off another limb.
|
| How did he manage to untie these two ropes without being closer
| than about 15 feet from the knot? These two ropes were tied to
| the limb such as to form an inverted V with the two ends tied to
| the limb, several feet apart and the center of the V secured to
| the lift bucket.
|
| The only thing I can figure out is that he used some form of
| mental telepathy to cause the two rope ends to untie themselves
| simultaneously and let the limb drop. ;-) There has to be a
| better explanation.
You never learned to tie shoe laces?
http://www.troop7.org/Knots/Bow.html
http://www.fieggen.com/shoelace/betterbowknot.htm
.
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| User: "Gordon" |
|
| Title: Re: Rope knot |
22 Jan 2008 02:43:26 PM |
|
|
On Tue, 22 Jan 2008 19:43:19 GMT, "Androcles"
<Engineer@hogwarts.physics_d> wrote:
"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com...
|I recently watched a man in a lift bucket remove tree limbs that
| had broken in an ice storm. He was removing some very large limbs
| that were hanging, partially broken, over a neighbor's house.
|
| He maneuvered his lift bucket into position and tied a rope to
| the limb in two places, then swung his lift bucket over to the
| fracture area and used a chain saw to cut the limb free.
|
| He then operated the lift bucket such as to raise the severed
| limb, then move it horizontally out over an empty space in the
| yard. Then he did something that I couldn't figure out. Somehow
| he caused the two ropes that were supporting the severed limb to
| untie themselves at the point where they were tied to the limb.
| The limb then fell to the ground and the man then returned his
| lift bucket to cut off another limb.
|
| How did he manage to untie these two ropes without being closer
| than about 15 feet from the knot? These two ropes were tied to
| the limb such as to form an inverted V with the two ends tied to
| the limb, several feet apart and the center of the V secured to
| the lift bucket.
|
| The only thing I can figure out is that he used some form of
| mental telepathy to cause the two rope ends to untie themselves
| simultaneously and let the limb drop. ;-) There has to be a
| better explanation.
You never learned to tie shoe laces?
http://www.troop7.org/Knots/Bow.html
http://www.fieggen.com/shoelace/betterbowknot.htm
Yeah, my mother taught me how to tie my shoes by the time I was
about 3 years old, but by then my arms were long enough to reach
my feet. I could put both hands to work tying and untying my
shoes.
When this tree trimmer fellow united the ropes that were carrying
the severed limb, he wasn't within 15 feet of the knots that held
the rope secured around the severed tree limb. His arms weren't
anywhere near that long!
There were two ropes, each tied to the limb in separate places
that were about 15 feet apart. What ever he did, caused both
knots to come untied simultaneously, allowing the tree limb to
free-fall to the ground.. He didn't have to lower his lift bucket
to the ground after dropping the lime, and retrieve his ropes.
.
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| User: "Androcles" |
|
| Title: Re: Rope knot |
22 Jan 2008 03:07:40 PM |
|
|
"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:58kcp3l1birholbf6ibl0h0mkurfcersvo@4ax.com...
| On Tue, 22 Jan 2008 19:43:19 GMT, "Androcles"
| <Engineer@hogwarts.physics_d> wrote:
|
| >
| >"Gordon" <gordonlr@DELETEswbell.net> wrote in message
| >news:j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com...
| >|I recently watched a man in a lift bucket remove tree limbs that
| >| had broken in an ice storm. He was removing some very large limbs
| >| that were hanging, partially broken, over a neighbor's house.
| >|
| >| He maneuvered his lift bucket into position and tied a rope to
| >| the limb in two places, then swung his lift bucket over to the
| >| fracture area and used a chain saw to cut the limb free.
| >|
| >| He then operated the lift bucket such as to raise the severed
| >| limb, then move it horizontally out over an empty space in the
| >| yard. Then he did something that I couldn't figure out. Somehow
| >| he caused the two ropes that were supporting the severed limb to
| >| untie themselves at the point where they were tied to the limb.
| >| The limb then fell to the ground and the man then returned his
| >| lift bucket to cut off another limb.
| >|
| >| How did he manage to untie these two ropes without being closer
| >| than about 15 feet from the knot? These two ropes were tied to
| >| the limb such as to form an inverted V with the two ends tied to
| >| the limb, several feet apart and the center of the V secured to
| >| the lift bucket.
| >|
| >| The only thing I can figure out is that he used some form of
| >| mental telepathy to cause the two rope ends to untie themselves
| >| simultaneously and let the limb drop. ;-) There has to be a
| >| better explanation.
| >
| >You never learned to tie shoe laces?
| > http://www.troop7.org/Knots/Bow.html
| > http://www.fieggen.com/shoelace/betterbowknot.htm
| >
| Yeah, my mother taught me how to tie my shoes by the time I was
| about 3 years old, but by then my arms were long enough to reach
| my feet. I could put both hands to work tying and untying my
| shoes.
Ah, but did she teach you how to untie them as well?
| When this tree trimmer fellow united the ropes that were carrying
| the severed limb, he wasn't within 15 feet of the knots that held
| the rope secured around the severed tree limb. His arms weren't
| anywhere near that long!
|
| There were two ropes, each tied to the limb in separate places
| that were about 15 feet apart. What ever he did, caused both
| knots to come untied simultaneously, allowing the tree limb to
| free-fall to the ground.. He didn't have to lower his lift bucket
| to the ground after dropping the lime, and retrieve his ropes.
Yeah, magic.
He did manage to reach the knots when he tied them. Leaving a 15'
long loose end is not that hard unless you have short shoe laces.
When I leave a long loose end I sometimes step on it with the other
foot and my shoe becomes untied. Perhaps that's why shoe laces
are made to be just long enough and ropes have 15' long loose
ends. That tree surgeon went to university and learned physics
to do that.
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| User: "Uncle Al" |
|
| Title: Re: Rope knot |
22 Jan 2008 06:31:34 PM |
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|
Gordon wrote:
On Tue, 22 Jan 2008 19:43:19 GMT, "Androcles"
<Engineer@hogwarts.physics_d> wrote:
"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com...
[snip]
When this tree trimmer fellow united the ropes that were carrying
the severed limb, he wasn't within 15 feet of the knots that held
the rope secured around the severed tree limb. His arms weren't
anywhere near that long!
There were two ropes, each tied to the limb in separate places
that were about 15 feet apart. What ever he did, caused both
knots to come untied simultaneously, allowing the tree limb to
free-fall to the ground.. He didn't have to lower his lift bucket
to the ground after dropping the lime, and retrieve his ropes.
A sheepshank or a chain knot unties itself when triggered.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2
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| User: "Benj" |
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| Title: Re: Rope knot |
22 Jan 2008 07:23:09 PM |
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|
On Jan 22, 7:31 pm, Uncle Al <Uncle...@hate.spam.net> wrote:
A sheepshank or a chain knot unties itself when triggered.
ROCKSTARS! Is there anything they don't know?
Homer Simpson
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| User: "Sylvain Croussette" |
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| Title: Re: Rope knot |
23 Jan 2008 10:07:27 AM |
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On 22 jan, 15:43, Gordon <gordo...@DELETEswbell.net> wrote:
....
When this tree trimmer fellow united the ropes that were carrying
the severed limb, he wasn't within 15 feet of the knots that held
the rope secured around the severed tree limb. His arms weren't
anywhere near that long!
There were two ropes, each tied to the limb in separate places
that were about 15 feet apart. What ever he did, caused both
knots to come untied simultaneously, allowing the tree limb to
free-fall to the ground.. He didn't have to lower his lift bucket
to the ground after dropping the lime, and retrieve his ropes.
Many knots can be finisned into a "slipped" version. You should know
how to make a slip knot already, start with an overhand knot but
instead of passing the running end completely through, you pass a
"bight", ie a loop. Then to untie the knot you pull on this end.
So in your example I don't know which knot was used exactly, maybe
something like a clove hitch, it's good to tie to round things:
http://www.folsoms.net/knots/animations/dspgif.cgi?gifname='anich.gif'&title=Clove%20Hitch
But instead of passing the running end completely through as I said
you pass a bight. The standing end will support the weight of the
falling limb, and to release the limb you pull on the running end. Of
course the knot may have tightened under the weight you may have to
jerk the rope up and down a little but I see no great
difficulty, you don't have to be Einstein to do this.
.
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| User: "tadchem" |
|
| Title: Re: Rope knot |
23 Jan 2008 11:08:37 AM |
|
|
On Jan 23, 11:07 am, Sylvain Croussette <sylvaincrousset...@yahoo.ca>
wrote:
On 22 jan, 15:43, Gordon <gordo...@DELETEswbell.net> wrote:
...
When this tree trimmer fellow united the ropes that were carrying
the severed limb, he wasn't within 15 feet of the knots that held
the rope secured around the severed tree limb. His arms weren't
anywhere near that long!
There were two ropes, each tied to the limb in separate places
that were about 15 feet apart. What ever he did, caused both
knots to come untied simultaneously, allowing the tree limb to
free-fall to the ground.. He didn't have to lower his lift bucket
to the ground after dropping the lime, and retrieve his ropes.
Many knots can be finisned into a "slipped" version. You should know
how to make a slip knot already, start with an overhand knot but
instead of passing the running end completely through, you pass a
"bight", ie a loop. Then to untie the knot you pull on this end.
So in your example I don't know which knot was used exactly, maybe
something like a clove hitch, it's good to tie to round things:
http://www.folsoms.net/knots/animations/dspgif.cgi?gifname='anich.gif...
But instead of passing the running end completely through as I said
you pass a bight. The standing end will support the weight of the
falling limb, and to release the limb you pull on the running end. Of
course the knot may have tightened under the weight you may have to
jerk the rope up and down a little but I see no great
difficulty, you don't have to be Einstein to do this.
I would use a Constrictor Knot - it's less likely to slip or roll:
http://www.animatedknots.com/constrictor/index.php?LogoImage=LogoGrog.jpg&Website=www.animatedknots.com
You are right, though. Finishing with a bight can convert most simple
knots into slip knots. The classic shoelace tie is a square (or
granny) knot finished with a double bight.
It is a continual source of amusement to me to watch technophiles (and
technology addicts) marvelling at simple applications of ingenuity to
develop low-tech solutions to problems. One of my favorites is
watching people wondering how the ancient Egyptians built the Pyramids
with limestone blocks which fit perfectly together and which show no
tool marks or damage from being moved:
http://news.softpedia.com/news/Scientists-Prove-the-Pyramids-Were-Cast-of-Cement-55105.shtml
The Romans evidently stole their "innovation" of concrete from the
Egyptians, who had mastered it millenia before the Fall of Troy or the
founding of Rome.
Tom Davidson
Richmond, VA
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| User: "" |
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| Title: Re: Rope knot |
23 Jan 2008 07:58:07 AM |
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|
In article <j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com>,
Gordon <gordonlr@DELETEswbell.net> wrote:
I recently watched a man in a lift bucket remove tree limbs that
had broken in an ice storm. He was removing some very large limbs
that were hanging, partially broken, over a neighbor's house.
I just bought a Book of Knots at Barnes and Noble. It was on
their bargain table and I paid $1.66. It is so kewl. My next
task is to learn how to tie all 200 knots. Another thing the
book does is explain why you would choose to use each knot.
He maneuvered his lift bucket into position and tied a rope to
the limb in two places, then swung his lift bucket over to the
fracture area and used a chain saw to cut the limb free.
ARen't those guys amazing? I watched one a month ago transfer
wires from one pole to an adjacent pole and he also made the
wire higher on the pole.
/BAH
<SNIP>
.
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| User: "Gordon" |
|
| Title: Re: Rope knot |
23 Jan 2008 08:40:28 AM |
|
|
On Wed, 23 Jan 08 13:58:07 GMT, wrote:
In article <j25cp31e869nkc9ut7a4o5ie5qd6c67cd8@4ax.com>,
Gordon <gordonlr@DELETEswbell.net> wrote:
I recently watched a man in a lift bucket remove tree limbs that
had broken in an ice storm. He was removing some very large limbs
that were hanging, partially broken, over a neighbor's house.
I just bought a Book of Knots at Barnes and Noble. It was on
their bargain table and I paid $1.66. It is so kewl. My next
task is to learn how to tie all 200 knots. Another thing the
book does is explain why you would choose to use each knot.
He maneuvered his lift bucket into position and tied a rope to
the limb in two places, then swung his lift bucket over to the
fracture area and used a chain saw to cut the limb free.
ARen't those guys amazing? I watched one a month ago transfer
wires from one pole to an adjacent pole and he also made the
wire higher on the pole.
/BAH
<SNIP>
Yes, those tree trimmers and line repairmen do some amazing
things from the confines of their lift buckets, but I'm sure they
don't defy any of the basic laws of physics. Their work would
probably seem quite mundane if we just understood it all.
It's probably somewhat like a cowboy roping a calf...looks quite
complex, but once you've practiced it a bit it is really easy.
But, even as a cowboy kid, back on the ranch, I was never able to
release the calf without dismounting and walking to the calf's
head to remove the rope. It surely would be handy to release the
calf like these tree trimmers released those limbs.
Gordon
.
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| User: "Vince Morgan vinharAtHereoptusnet.com.au" |
|
| Title: Re: Rope knot |
23 Jan 2008 04:17:30 PM |
|
|
"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:q4kep3902mdk58rrbho1u3ourmv84b7bak@4ax.com...
On Wed, 23 Jan 08 13:58:07 GMT, wrote:
It's probably somewhat like a cowboy roping a calf...looks quite
complex, but once you've practiced it a bit it is really easy.
But, even as a cowboy kid, back on the ranch, I was never able to
release the calf without dismounting and walking to the calf's
head to remove the rope. It surely would be handy to release the
calf like these tree trimmers released those limbs.
But, wouldn't the drop damage the calf???
:)
.
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| User: "Gordon" |
|
| Title: Re: Rope knot |
23 Jan 2008 06:46:50 PM |
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On Thu, 24 Jan 2008 08:17:30 +1000, "Vince Morgan"
<vinharAtHereoptusnet.com.au> wrote:
"Gordon" <gordonlr@DELETEswbell.net> wrote in message
news:q4kep3902mdk58rrbho1u3ourmv84b7bak@4ax.com...
On Wed, 23 Jan 08 13:58:07 GMT, wrote:
It's probably somewhat like a cowboy roping a calf...looks quite
complex, but once you've practiced it a bit it is really easy.
But, even as a cowboy kid, back on the ranch, I was never able to
release the calf without dismounting and walking to the calf's
head to remove the rope. It surely would be handy to release the
calf like these tree trimmers released those limbs.
But, wouldn't the drop damage the calf???
:)
I'm sure it would if the calf were dropped as far as these limbs
were being dropped. ;-)
The limbs were being released about 10 feet above the ground
while the man in the bucket was about 20 feet above the ground.
The man in the bucket then returned to remove another limb.
I still can't figure out how those ropes running from the lift
bucket to the tree limb, a distance of several feet, were
released from the tree limb by the guy in the lift bucket.
.
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| User: "Dwib" |
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| Title: Re: Rope knot |
22 Jan 2008 12:38:47 PM |
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On Jan 22, 10:14=A0am, Gordon <gordo...@DELETEswbell.net> wrote:
The only thing I can figure out is that he used some form of
mental telepathy to cause the two rope ends to untie themselves
simultaneously and let the limb drop. =A0;-) There has to be a
better explanation.
I believe Elven rope has been known to untie itself. At least Sam's
rope did it.
Dwib
.
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| User: "" |
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| Title: Re: Rope knot |
23 Jan 2008 10:22:19 PM |
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On Jan 22, 11:14=A0am, Gordon <gordo...@DELETEswbell.net> wrote:
I recently watched a man in a lift bucket remove tree limbs that
had broken in an ice storm. He was removing some very large limbs
that were hanging, partially broken, over a neighbor's house.
He maneuvered his lift bucket into position and tied a rope to
the limb in two places, then swung his lift bucket over to the
fracture area and used a chain saw to cut the limb free.
He then operated the lift bucket such as to raise the severed
limb, then move it horizontally out over an empty space in the
yard. Then he did something that I couldn't figure out. Somehow
he caused the two ropes that were supporting the severed limb to
untie themselves at the point where they were tied to the limb.
The limb then fell to the ground and the man then returned his
lift bucket to cut off another limb.
How did he manage to untie these two ropes without being closer
than about 15 feet from the knot? These two ropes were tied to
the limb such as to form an inverted V with the two ends tied to
the limb, several feet apart and the center of the V secured to
the lift bucket.
The only thing I can figure out is that he used some form of
mental telepathy to cause the two rope ends to untie themselves
simultaneously and let the limb drop. =A0;-) There has to be a
better explanation.
I've seen the same thing done by the tree guys.
They employ something that horse owners call a "quick release knot".
You release it by pulling on one of the two lines.
It's more or less half of the bow knot that you tie on your shoes
everyday. One line hold the tension, while the other line when pulled
releases the knot.
Boaters sometimes use the same knot to attach their boats to a dock,
because you can release it so quickly by simply pulling on a line.
Very handy when your're alone on your boat.
Harry C.
.
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| User: "Gordon" |
|
| Title: Re: Rope knot |
24 Jan 2008 09:56:31 AM |
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|
On Wed, 23 Jan 2008 20:22:19 -0800 (PST), "hhc314@yahoo.com"
<hhc314@yahoo.com> wrote:
On Jan 22, 11:14 am, Gordon <gordo...@DELETEswbell.net> wrote:
(snip)
I've seen the same thing done by the tree guys.
They employ something that horse owners call a "quick release knot".
You release it by pulling on one of the two lines.
It's more or less half of the bow knot that you tie on your shoes
everyday. One line hold the tension, while the other line when pulled
releases the knot.
Boaters sometimes use the same knot to attach their boats to a dock,
because you can release it so quickly by simply pulling on a line.
Very handy when your're alone on your boat.
Harry C.
This is getting very close. I could not make out a dual line, as
would be required by the method you describe, but maybe it was
there, laying very close to the main support rope. All it would
take is a small chord to pull the release knot, then maybe this
small chord is designed to break at the place where it is tied to
the large rope, thus permitting the untied larger rope to unwrap
from around the limb, allowing the limb to fall free without
having to draw the release chord full length around the limb as
it fell. Gordon
.
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| User: "tadchem" |
|
| Title: Re: Rope knot |
24 Jan 2008 05:25:54 PM |
|
|
On Jan 24, 10:56 am, Gordon <gordo...@DELETEswbell.net> wrote:
On Wed, 23 Jan 2008 20:22:19 -0800 (PST), "hhc...@yahoo.com"
<hhc...@yahoo.com> wrote:
On Jan 22, 11:14 am, Gordon <gordo...@DELETEswbell.net> wrote:
(snip)
I've seen the same thing done by the tree guys.
They employ something that horse owners call a "quick release knot".
You release it by pulling on one of the two lines.
It's more or less half of the bow knot that you tie on your shoes
everyday. One line hold the tension, while the other line when pulled
releases the knot.
Boaters sometimes use the same knot to attach their boats to a dock,
because you can release it so quickly by simply pulling on a line.
Very handy when your're alone on your boat.
Harry C.
This is getting very close. I could not make out a dual line, as
would be required by the method you describe, but maybe it was
there, laying very close to the main support rope. All it would
take is a small chord to pull the release knot, then maybe this
small chord is designed to break at the place where it is tied to
the large rope, thus permitting the untied larger rope to unwrap
from around the limb, allowing the limb to fall free without
having to draw the release chord full length around the limb as
it fell. Gordon
Play A, C, and E together and you have an "A minor" chord. A small
chord, but maybe large enough to do the job?
;-)
Tom Davidson
Richmond, VA
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| User: "Gordon" |
|
| Title: Re: Rope knot |
24 Jan 2008 06:06:14 PM |
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On Thu, 24 Jan 2008 15:25:54 -0800 (PST), tadchem
<tadchem@comcast.net> wrote:
On Jan 24, 10:56 am, Gordon <gordo...@DELETEswbell.net> wrote:
On Wed, 23 Jan 2008 20:22:19 -0800 (PST), "hhc...@yahoo.com"
<hhc...@yahoo.com> wrote:
On Jan 22, 11:14 am, Gordon <gordo...@DELETEswbell.net> wrote:
(snip)
I've seen the same thing done by the tree guys.
They employ something that horse owners call a "quick release knot".
You release it by pulling on one of the two lines.
It's more or less half of the bow knot that you tie on your shoes
everyday. One line hold the tension, while the other line when pulled
releases the knot.
Boaters sometimes use the same knot to attach their boats to a dock,
because you can release it so quickly by simply pulling on a line.
Very handy when your're alone on your boat.
Harry C.
This is getting very close. I could not make out a dual line, as
would be required by the method you describe, but maybe it was
there, laying very close to the main support rope. All it would
take is a small chord to pull the release knot, then maybe this
small chord is designed to break at the place where it is tied to
the large rope, thus permitting the untied larger rope to unwrap
from around the limb, allowing the limb to fall free without
having to draw the release chord full length around the limb as
it fell. Gordon
Play A, C, and E together and you have an "A minor" chord. A small
chord, but maybe large enough to do the job?
;-)
Tom Davidson
Richmond, VA
The diesel engines on their trucks and the lift hydraulic systems
seemed to be producing something closer to a "Cmaj13" Chord - C,
E, G, B, D, F#, A
Gordon
.
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