I found this
http://www.archive.org/stream/turningmechanica04holtuoft#page/52/mode/2up
Is not suitable for bow?
You know a better way?
The images aren’t good : the re-tucking, as shown,
will just UNtuck the twist-married part, so far as I
can make out --but one gets the general idea.
I’m not at all familiar with the “gut” material. This
sort of splice, however, might be employed with
laid rope, and I’d expect it to do well, but with
more than the single tuck! Perhaps the parts
of “twist-marrying” (i.e., opening one strand to
wrap around the other (my impromptu term))
should be longer, too.
–dl*
I can remember the material from my childhood - it was never made from cats (as far as I can remember it was usually sheep’s intestines) and it was quite stiff being used by my grandfather for fishing line.
Do you mean a violin bow?.On a violin bow would splicing not affect the performance?
Barry
This splice has been used extensively on Polypropylene laid rope to make chokers for ‘whole tree’ (length) timber extraction (skyline, highlead and ground skidding) albeit with two tucks each end and the second tuck must be under a different strand to the first, leaving the two ends protruding. I wouldn’t recommend it for critical situations though.
Do you mean a violin bow?.On a violin bow would splicing not affect the performance?Barry
Bow for the lathe:
http://www.archive.org/stream/turningmechanica04holtuoft#page/20/mode/2up
http://www.archive.org/stream/turningmechanica04holtuoft#page/25/mode/1up
http://www.archive.org/stream/turningmechanica04holtuoft#page/26/mode/1up
Wlodzimierz
I presume that you mean that this splicing technique has
been used to make eyes for choker slings? --and of it, not the
twist-marrying of strands, but just the tucked-strand part
(–just two tucks, not three?).
There was an accident report discussed on this topic
–unless I’m mistaken-- on this forum some years back,
with Roy : a hoisted load of lumber came down with
tragic results, IIRC. It led me to think about something
simple to boost security, such as tossing in a turn.
–dl*
I presume that you mean that this splicing technique has been used to make eyes for choker slings?
Chokers are made in many guises, not all are slings.
Mostly for small slings, like climbers sewn webbing slings but made from rope, incorporated into the sling would be a spring steel clip that was clipped on to the tagline of the wire rope. These would be for ‘tip first’ extraction which would be preferable because most of the weight would be on the ground due to the taper on trees.They are the lightest type of choker which is a plus for the chokerman who has to negotiate over felled trees and tons of brash to do his job.The recommendation for these slings was a minimum of two tucks, but in practice three were used.
If there were large numbers of ‘butt first’ trees due to the prevailing winds and/or terrain the chokerman would make some eye chokers from rope where three tucks were recommended (four were often used) but most of the chokers would be either chain with grab hooks or wire incorporating sliders with a keyhole to take a toggle at the end of a chain.
At no point should the chokerman be in danger of a choker failure as he is in charge of the whole operation via radio comms, nothing will happen until he is safe. Chokers failing however is a major PITA because of having to retrieve the timber where it failed, hence more tucks than recommended.
On down times chokermen would resort to splicing conventionally because a conventional splice does not snag on brash or poorly sned trees.
Again I do not recommend this type of splice, it is easy and fast, big deal.
For metal turning.
The lathe would have been powered by a fiddle bow, the catgut string
of which would have been wrapped around the single brass pulley on the spindle.
http://www.data-wales.co.uk/sylvester_samuel.htm
For wood turning.
Leather belt
http://www.youtube.com/watch?v=J75VrPj-U6M&feature=related
Cord
http://www.youtube.com/watch?v=wnv0DAR_gWA&feature=related
Ah, my mistake/presumption! --i.e., that the choker was
of an eye-ended sling (eyes on each end), loaded single-stand,
one eye forming the choke, the other connected to for lifting.
So, an endless / loop / circular sling, ends joined, to close.
(But there still is no “twist-marry” part; this would be
interesting to try in laid rope.)
Again I do not recommend this type of splice, it [b]is[/b] easy and fast, big deal.
!? But this is a rather particular orientation of so-tucked
ends, which I’ve not seen before. Rather, what I expect
is the back’n’forth tucking shown in my attached photo
of lobster-pot snood (gangion) to the long line, in what
I’ll call a “near groundline hitch” --“near”, because
rather than the finishing tuck of tail through initial turn
of the SPart around the object, the tuck goes down into
the lay of the object-rope (and is tucked one more time).
–dl*
Ah, my mistake/presumption! --i.e., that the choker was of an eye-ended sling (eyes on each end), loaded single-stand, one eye forming the choke, the other connected to for lifting.
Whether it was webbing or rope, this would be called a Strop in the UK. Slings are endless.
!!? My (older) OED doesn’t suggest this.
And otherwise, I find direction to “strap”,
and at best a definition simply saying that ends are joined.
ONE thing that might capture all the senses --joined ends,
eyes at ends of structure, and relative width–,
is the structure sometimes seen where a loop of rope
with ends joined will be oriented as a severely eliptical
shape and bound in the middle such that at each end
there are, effectively, eyes! The doubled material presents
width.
(I recall, but in a quick search, didn’t find, what I thought
was in Ashely showing loose material being bound together
to form (IIRC) a “strop” --though that term isn’t in ABOK’s
Index (!).)
Interesting.
Thanks,
–dl*
I think Dan you mean a “selvagee strop” made by placing 2 nails in a plank of wood and looping some thin line around them many times. A quick search in Google threw this up: http://www.thedump.scoutscan.com/RopeSplicing.pdf by Percy Blandford (1st Guild President and still around at 99 - possibly 100 by now). The relevant page is 32 (of 33).
I think that the words strop and strap are interchangeable - the leather strap used to polish the edge on a cutthroat razor is called a “strop” and the verb “to strop” means to polish said razor (my father was a barber and used one regularly - a lot safer than a “safety razor” as you’re a LOT more careful!).
Barry
!!? My (older) OED doesn't suggest this. And otherwise, I find direction to "strap", and at best a definition simply saying that ends are joined.ONE thing that might capture all the senses --joined ends,
eyes at ends of structure, and relative width–,
is the structure sometimes seen where a loop of rope
with ends joined will be oriented as a severely eliptical
shape and bound in the middle such that at each end
there are, effectively, eyes! The doubled material presents
width.(I recall, but in a quick search, didn’t find, what I thought
was in Ashely showing loose material being bound together
to form (IIRC) a “strop” --though that term isn’t in ABOK’s
Index (!).)
Made me think of helping a Lampy (Lamptrimmer. Originally just that in the days of oil lamps, petty officer below Bosun often in charge of cordage and rigging) once to repair rope stropped blocks. We started off making grommets which are just small slings after all, and fitting them on the blocks before seizing the grommet which transforms it to a strop.
Very similar to this
http://www.duckworksmagazine.com/02/articles/woodenblocks/woodenblocks.htm
Edit
The correct term for grommet is apparently a “grommet strop” ( Lampy never told me that ) according to Boy’s Manual Of Seamanship And Gunnery
http://www.pbenyon.plus.com/B_S_M/Contents.html
Mentioned here about half way down, also mentions Salvagee or Warped Strop amongst others.
http://www.pbenyon.plus.com/B_S_M/Third_Instruction.html
Very interesting stuff.
Thank you for the information.
It is important to the aesthetics of the node.
Struktor