I Love Tires, Too!

Last week, I mentioned John Boyd Dunlop, the inventor of the pneumatic tire.  It is, without a doubt, the single most important innovation in the history of cycling--and one of the most important in the history of technology.  

Supposedly, he invented it to appease his son, who complained about the harsh ride of the tricycle he'd just received for his birthday.  

If that story is true, let's hope the son's reaction is something like this:

This "Mac" Is Almost 200 Years Old. Would We Have Gore-Tex Without It?

If someone were to ask you which countries contributed the most to the development of the bicycle, which would you name?

I'd bet that most of you would name one or more of the following:

• England
• France
• Italy
• Japan
• United States.

Any or all would be valid choices.  A case could also be made for Germany:  like the US, it played significant roles in the early history as well as the current development of the bicycle, although there was a "gap" of a few decades.

One country that played an inordinately large role in the early development of the bicycle is Scotland.  Now, some of you may argue that it's part of the UK and therefore the Scots are British.  But, as much as I love the English and things English (Hey, I teach their literature!), I see the Scots as an independent people who have had a history and culture distinct from their neighbors.  If I don't understand that, well, I've had no business teaching Macbeth.

The single most important technological development in the history of cycling--indeed, one of the most important technological developments in history, period--came from the hands of a Scottish veterinary surgeon who practiced in Northern Ireland. 

There is still a company that bears his name.  These days, it's best known for tennis equipment and tires for motorcycles, cars and trucks.

And, yes, it made bicycle tires until the 1960s.  In fact, their clinchers were regarded as the best available and were original equipment on many quality bikes, including Raleighs.  Owners of Raleigh three-speed got very, very creative in extending the life of their tires because they couldn't be replaced with anything that wore as well.  Likewise, owners of Raleigh sport bikes like the Lenton did whatever they could to keep their original Dunlop tires rolling, because the only way to match, or exceed, their performance was to use tubular ("sew-up") tires.  Dunlop also made a steel rim, the lightest of its time, to use with the tire.

John Boyd Dunlop's invention--the pneumatic, or air-filled, tire-- essentially completed the modern bicycle which, arguably, was created by John Kemp Starley a couple of years earlier when he created a machine with two equal-sized wheels driven by sprockets and a chain.  Starley's bike was, essentially, the final major stage in the evolution of the pedal driven bicycle, which was invented by Kirkpatrick Macmillan, another Scotsman. (With a name like that, what else could he be?)

As I said in an earlier post, it's difficult to overstate the importance of the pneumatic tire.  Without it, bicycles would still be slower and less versatile than horses.  So would motorcycles, automobiles and trucks.  And modern aircraft could not take off or land.

Even if no other Scotsman invented anything to improve the bicycle, or the bicycling experience, I think Scotland could lay claim to being one of the most important countries in the development of cycling.  However, I am going to mention another Scotsman who created something that, like pedals and pneumatic tires, made it possible to ride a bicycle under a greater range of conditions.  Some might even argue that his invention made Dunlop's work possible.

One way in which the invention I'm about to mention is different from pedaled bicycles or pneumatic tires is that it wasn't developed specifically for bicycles.  In fact, he probably never rode anything we would describe as a bicycle.  For that matter, he might not have ever seen one.

You are all familiar with his name and the invention that bears it, even though most of you probably have never owned one--or, at least not a "real" one.  There is only one factory in the whole world that makes the "authentic" version.  Still, it has influenced many, many other products in its genre--and items far beyond the scope of said genre.

As I mentioned, it helped to make, if indirectly, Dunlop's tire possible.  And what did that tire--and just about every tire made since--consist of?  Rubber and fabric.  Remember, the original Dunlop tire didn't have a bead:  It was rather like a modern sew-up (tubular) tire.

So what else is made from rubber and cloth?  A certain raincoat:  the Mackintosh.  Its inventor, Charles Macintosh, was born 250 years ago today.


Charles Macintosh was a self-taught Scottish chemist who originally worked on new ways of making dyes.  He succeeded at that, but neither that nor anything else he did would immortalize him in the way his coat--and, most important, the fabric he created for it--would.

He found a way to sandwich a layer of liquid rubber between two layers of cloth.  The key was in mixing naphtha into the rubber compound, which gave it enough liquid viscosity to spread between the layers of cloth but allowed the rubber to remain supple when it dried. 

Mackintosh coats became an instant success:  Everyone from police officers and firefighters to Arctic explorers wore them.  As a result, they became very fashionable and were, perhaps, one of the first unisex pieces of outerwear.

An early Mackintosh:  The Granddaddy of Gore Tex?

But the most important result of Macintosh's work is that he created what was, in essence, the world's first waterproof fabric.  Other attempts had been made to create waterproof jackets and coats:  They either were too stiff to wear or were, well, not exactly waterproof.  The main drawbacks to early Mackintoshes were their stiffness (though they were still more supple than other raingear), smell and tendency to melt in hot weather. All of these problems were solved by Macintosh and later chemists--and with the vulcanization of rubber.

If you have a Gore Tex jacket, the way it was made was, really, not so different from how Mackintoshes have been made for nearly two centuries.  The Gore Tex membrane is bonded between layers of fabric. And, just as the original Mackintosh (made in a factory in Manchester, England) is taped at the seams, so is any Gore Tex garment that can claim to be waterproof.  Of course, Gore Tex overcomes the other drawback of the Mackintosh, or any other rubberized garment:  Its lack of breathability.

So, I think it's safe to say that the "Mack" did as much to make cycling an activity that can be done in adverse weather conditions as another "Mac" did--at least in the eyes of its fans--to make personal computing easier and more versatile.

(N.B.:  I have composed this, and everything else on this blog and my other, on PCs, mainly out of habit.)
 

Bicycles And The Eiffel Tower

On this date in 1889, the Eiffel Tower opened to the public.

Probably no other manmade structure in the world has served as a backdrop for as many bicycles and cyclists as that most iconic of buildings.  Made to serve as the entrance of that year's Exposition, it was, ironically, slated to be torn down once the fair ended.  And many criticis couldn't wait:  They complained that it interrupted the Paris skyline.



There are a number of reasons why la Tour and two wheels are so linked in people's imaginations.  One, of course, is that cycling, almost from its very beginnings, has been a seemingly inextricable part of French culture.  Another is that the tower is so associated with romance, like people and couples wending and sashaying along rues diffuse eclaires, in the City of Light and in les pays.

Also, it's difficult to separate the history of bicycles themselves from that of the Eiffel Tower.  When its construction began in 1887, the "safety bicycle", with a chain-driven rear wheel and a front of equal size or smaller, had been on the market a couple of years.  With it, ridership grew by leaps and bounds--and, for the first time, significant numbers of women were riding--because, as its name indicates, it was safer to ride than the high-wheelers that had mainly been toys for strong young men.  And, in 1888, while the la Tour was going up, John Boyd Dunlop introduced his pneumatic tire, which would further improve the rideabilty of bicycles.



Now, I am neither an engineer nor a scientist, so take what I'm about to say for what it's worth.  I think that another parallel between the development of two-wheelers and the tower is that both taught subsequent inventors and researchers much about the possibilities of metal construction.  Contrary to what most people believe (as I did, until I learned otherwise!), the Eiffel Tower and most bicycles of the time were not made of steel.  Although steel had been around for milennia, methods for making it in large quantities had only recently been developed.  Thus, it was expensive and nobody really knew how to use it in construction.

Thus, the Tower and bikes were made of iron--wrought in the case of the former and cast for bikes.  Monsieur Eiffel's team figured out that the structure they conceived would be best built by placing them at angles to each other.  Around the same time, bicycle frames were evolving into something like the shapes so familiar to us today, as different bike-builders experimented with different placements of, and ways of joining, frame members.

As heavy as wrought iron is, it's still much lighter than stone, the most popular material for large structures at that time, and for centuries before.  And the cast iron used for bicycles (which were sometimes made by blacksmiths) was sturdier than the wood that had been used to make bikes.  While iron bikes were heavier, they paved the road (so to speak) for steel bikes, which could be made much lighter because the fact that the material is stronger means that less of it can be used to achieve the necessary strength.

Of course, the work of Eiffel's team made the creation of other large metal structures, just as the new safety bicycle opened up other possiblities in bicycle (as well as other vehicular) design and construction.  That meant that, while the Eiffel Tower was the world's tallest manmade structure on the day it opened, it would hold that distinction for 41 years, until the Chrysler Building was completed in 1930.  Likewise, the construction methods developed for iron bikes, along with pneumatic tires, made it possible to develop, not only better bicycles, but also automobiles and aircraft.

So, if you find yourself thinking about the Eiffel Towers and bicycles together, just remember that they are linked, not only in romantic images, but also in history and technology.

Knowing that, it seems fitting that the Bikeffel Tower was built in Breckenridge, Colorado from recycled bike parts:

Another Celt Blazes A New Path For Cycling--And Everyone

Now, on the day after St. Patrick's Day, I'm going to talk about another Celtic person in the world of cycling.

Unlike Sean Kelly, this person was from Scotland but lived in Ulster (a.k.a. Northern Ireland).  Another difference is that this person I'm about to mention never won any Tour jerseys or classics.  In fact, as far as I know, he never raced at all.  

But we should all be grateful to this person, who invented something that not only revolutionized (in every sense of the word) cycling, but the whole world. 

That last clue may have tipped you off.  Yes, this person's invention had to do with the wheel.  No, he didn't invent the wheel:  That came a few millenia earlier.  But what he did made the wheel--and the bicycle--versatile in ways no one could have previously imagined.

What's just as interesting is that this person not only was not a racer, he wasn't an engineer or a technical person.  In fact, he was a veterinary surgeon at the time he invented the thing I'm going to mention.

Early pneumatic tire.  From Dave's Vintage Bicycles

That thing was...the pneumatic tire.  Without it, bicycles are no faster than horse-drawn carriages--and wouldn't be able to traverse some of the terrain our bovine friends have trod for milennia. Ditto for automobiles:  They would have been all but useless, especially given the road conditions of around the time the gasoline-powered engine was invented.  And aircraft, at least as we know them, could not take off or land.

John Boyd Dunlop

 The man in question is John Boyd Dunlop.  As the story goes, his young son was prescribed cycling as a cure for a heavy cold.  Given the relative cost of bikes at that time, it took a pretty fair amount of audacity to complain that his tricycle--with hard rubber tires on iron wheels-- was uncomfortable.

No one knows exactly how Dunlop pere came up with the idea of bonding canvas together with liquid rubber to make an inflatable tube.  But he did and in 1888 he patented the idea--and, in the process used the word "pneumatic" for the first time.  

A local firm, W. Edlin and company, agreed to make casings for the new tubes and the following year, a well-known cyclist, Willie Hume, used the new tires to win a race at Cherryvale.  A paper manufacturer who was one of the spectators would buy Dunlop's patents a few years later.  By that time, he had moved to Dublin, where he manufactured bicycle frames in collaboration with a local firm, Bowden and Gillies.