Quoted message said:Although the true believers on wreck.bike don't believe that tying
(and soldering) spokes was invented by John Starley to prevent spokes
from causing an endo by flailing around on high wheelers, the
motorcycle folks know otherwise. To make up for that, Triumph made
spoked wheels with spoke elbows unsupported for more than two
diameters from the flange. These are classic spoke breakers, like the
ones DT once made with longer elbows for easier spoke insertion.
http://www.triumphrat.net/twins-technical-talk/75065-broken-spoke.html
Jobst Brandt
Dear Jobst,
The only contemporary sources that I can find _never_ mention tying
and soldering to restrain broken spokes.
They talk about tying and soldering to strengthen the wheel. The more
plausible claim was that tying and soldering effectively created a
much bigger hub flange, while weirder claims were put forward about
restraining sideways movements.
They also talk about reducing rattle. Long spokes on highwheelers do
rattle if crossed.
It would be strange if early inventors wanted to tie and solder spokes
to restrain them when they broke. A spoke that broke at the elbow was
already well-restrained by the crossing--anyone who's ever had to bend
and wiggle a broken-elbow spoke out of a 3x lacing knows that.
And a two-foot long spoke that breaks at the rim (a much rarer
failure) is still restrained by being woven through the other spokes
and will not be restrained much better by tying and soldering down
next to the hub.
In other words, tying and soldering wouldn't do much to restrain
already interlaced spokes when they broke. But even if it's a dumb
idea, someone might have tried it in good faith--Starley or someone
else might have tried it and the useless idea might have caught on.
Here's the earliest patent that I've seen with tying and soldering.
The explanation sounds like nonsense, but Palmer claims that he ties
and solders for strength:
"The crossing parts of the spokes k l may be connected with wire bound
round the crossing parts and soldered. By arranging and connecting the
spokes in the manner described a direct tensile strain is put on each
spoke without any oblique strain."
http://www.google.com/patents?id=r9ZuAAAAEBAJ&pg=PA1&dq=359809
Here's another earlypatent, in which Latta uses special clips
_without_ soldering for connecting spokes:
http://www.google.com/patents?id=oChZAAAAEBAJ&pg=PA62&dq=377900
Frustratingly, Latta doesn't explain why the hell he connects his
spokes.
Here's a patent by Warwick for a "double-sleeve" (44 in the diagrams)
that joins the spokes (43 in the diagram) where they cross on a
highwheeler:
"For the purpose of increasing the strength of a wheel, either front
or rear, by holding the spokes 43 in line, the double sleeve 44 is
provided . . ."
http://www.google.com/patents?id=ZndnAAAAEBAJ&pg=PA20&dq=384946
Like Latta, Warwick was a prolific and successful early inventor,
working for a bicycle company. Neither Latta nor Warwick mention
restraining broken spokes when they insist on lashing spokes together.
Here's Peter Gendron, another famous early inventor (Gendron Bicycle
Company), explaining that tying and soldering prevented rattling:
"The advantage of this improvement [Gendron put spokes into the hub in
some odd way] consists in thereby accomplishing the result of causing
the two spokes at their point of crossing to bind each other . . .
[yes, they all wrote like this] . . . the tension of the spokes being
sufficient to completely effect this result, so that the spokes will
not rattle when the wheel is in motion. The same object is
accomplished with the present construction of wheel by winding or
tying the spokes at their point of crossing with small wire; but in
practice this is very annoying in different ways--as, for instance, in
cleaning the wheels or in replacing the spokes."
http://www.google.com/patents?id=NIdaAAAAEBAJ&pg=PP1&dq=434146#PPP2,M1
Of course, Latta, Warwick, and Gendron could all have been unaware of
some early theory about restraining broken spokes.
But until someone finds an earlier reference to restraining broken
spokes, there's nothing but belief to support the theory that this was
the original purpose of tying and soldering. So far, all the
references are to strengthening wheels and stopping rattles.
In other words, you're the "true believer"--you keep telling us that
you vaguely remember reading somewhere that Starley tied and soldered
spokes to restrain them when they broke.
Let us know if you ever find the reference.
I keep looking, but so far I haven't found _anything_ about _anyone_
who said that he lashed spokes together for safety.
But I keep finding clear contemporary explanations that spokes were
tied and soldered for strength (probably wrong, but that was the
theory) and to stop rattling (it worked).
Here are a few more previously mentioned references.
In "Collecting & Restoring Antique Bicycles," G. Donald Adams writes
on page 61 about how the 1887 New Light Mail Roadster differed from an
1882 Columbia in various ways, one of which was:
"Tangent spokes were used and were tied where they crossed to prvent
rattles."
***
In 1898, the author of "The Modern Bicycle and its accessories"
mentions the pros and cons of tying and soldering as strength and
explained that solderless clips might be better than heating the
spokes. But he never mentions restraining spokes as the reason:
"The majority of them [tangent-spoke wheel makers] tie their spokes to
each other where they cross. There are a great many of the makers who
do not tie them at all, there being some difference of opinion as to
the benefit derived from this treatment."
"Those in favor of tying spokes say that tying two or more [!] spokes
together at the crossing some distance above the hub shortens the
leverage from the rim and practically gives the wheel an additional
hub; that they are also stiffer against side or lateral strain, and
that the only good tangent spoke is one that is tied at the crossing
with its mates. Those who are opposed to tying spokes say that tying
them together makes them too rigid and inflexible [!], and that the
process of wiring them and soldering them together has a tendency to
crystallize the spokes at this point owing to the heat required to
solder them. This part of the argument, however, has been met by by
not wiring and soldering the spokes at the crossing, but by pinching
on them at this point a metal clamp such as is used on the Humber
wheel. The opponents of tying the spokes assert that the very
stiffness and rigidness which the wheel possesses when the spokes are
tied has a tendency to also crystallize them at the hub flanges as
well as cause them to break [!]."
http://books.google.com/books?id=1CRyfR7JclIC&printsec=titlepage#PPA69,M1
Cheers,
Carl Fogel