THE PNEUMATIC TYRE
Considering the pneumatic tyre was such an important invention, it surprised me how much confusion exists over its invention. This brief summary is my attempt to present various facts relevant to its adoption and eventual everyday use on bicycles. The main points are:-
1839 VULCANIZATION: The process of changing the physical properties of rubber through application of sulphur and heat was first perfected in America by Charles Goodyear.
1846 SOLID RUBBER TYRES: Rubber manufacturer Thomas Hancock, who was conducting similar research in England, met with the same success as Goodyear. The solid tyre was initially was used on carriages and steam-driven vehicles, and subsequently adapted for bicycles.
1845 THOMPSON AERIAL WHEEL: Scottish inventor Robert William Thompson was the actual inventor of the pneumatic tyre, and his earliest patent for it is dated 1845.
1882 THOMAS B. JEFFERY CLINCHER TYRE PATENT: Thomas B. Jeffery was an inventor and bicycle manufacturer who, with his partner, R. Philip Gormully, built and sold Rambler bicycles through his company, Gormully & Jeffery Mfg. Co, in Chicago from 1878 to 1900. His clincher tyre, like the Bartlett clincher tyre, had no wire beads. They held fast to the rim by pressure and the shape of their clincher beads. I’m not sure why the patent date is 1882 yet he did not introduce them to America until 1892. Perhaps the patent was sold to Dunlop?
1888 DUNLOP: J.B. Dunlop invented the inner tube and patented the pneumatic tyre. It was essentially a hosepipe inside an outer rubber tyre with treads. But the patent was reversed two years later because of Thompson’s previous patent.
Dunlop Cycle Co Ltd of Coventry was a separate concern, and this company became the Ariel Cycle Co Ltd around 1897.
Bicycles were made for J.B Dunlop by Edlin & Co of Belfast.
J.B. Dunlop patented a spring-frame bicycle called the Flexible, which was actually built. British patent date was 12th October 1889 and US patent December 1890.
1890 WELCH DETACHABLE WIRE BEAD TYRE: Some means had to be found to fix the tyre securely to the metal rim yet still allow for demounting and remounting it during repairs. First to develop a detachable pneumatic was Charles K. Welch of Tottenham, London, who filed a patent on it in September 1890, just ahead of others working on similar refinements. Unlike the Jeffery or Bartlett clincher tyres, his tyre used the wire-bead design we are more familiar with today. Dunlop promptly bought the patent.
1890 BARTLETT CLINCHER TYRE: William K. Bartlett of North British Rubber Co patented a similar tyre just five weeks later. Mr Bartlett got the jump on competitors merely by broadening an earlier patent application for a detachable non-pneumatic tire to include pneumatic construction as well. The Bartlett Clincher tyre subsequently became the first detachable pneumatic introduced to the market. Dunlop Pneumatic Tyre Co bought the Bartlett patent in 1897.
1891 WOODS TWO-WAY TYRE VALVE: The earliest tyre valves provided for easy inflation but not deflation. So inventor Charles H. Woods developed a valve that facilitated both operations. His two-way valve became standard in Great Britain and elsewhere and remains in use today.
1891 MICHELIN BROTHERS REMOVABLE PNEUMATIC TYRE: Edouard and André Michelin introduced the removable pneumatic tyre, which allowed the rider rather than a mechanic to fix a puncture quickly and efficiently. They used pneumatic tyres on a car for the first time in the 1895 Paris-Bordeaux Race.
1892 G&J AMERICAN BEADED-EDGE TYRE: The beaded-edge tyre made its American debut in 1892, produced by Gormully & Jeffrey.
1892 BROWN & STILLMAN PNEUMATIC TYRE: Alexander T. Brown and George F. Stillman, of Syracuse, N.Y, patented a pneumatic tyre for horseless carriages.
1890/1891 Pneumatic Tyre Safety Bicycle
with Bartlett Clincher Rims & Surviving 30″ PneumaticTyre
attributed to Sparkbrook
30″ Front wheel; 28″ Rear wheel
BELIEVED TO BE THE OLDEST SURVIVING PNEUMATIC TYRE SAFETY BICYCLE
I know the recent history of this bicycle, over the past 30 years. My friend Phil bought and sold this pneumatic tyre safety bicycle in the 1990s. For the past 20 years it was owned by top collector Tim Dawson, who wrote an article about it and its pneumatic tyre. However, neither Tim not its previous owner were able to tie down its manufacturer. Tim fitted a 28″ beaded edge tyre to the 30″ front wheel – he must be a magician, I certainly don’t know how to do that! And it has a matching beaded edge tyre on the 28″ rear wheel. He also made a new leather top for the saddle.
Tim wrote to me about it 5 years ago, saying: “The rims are Bartlett Clincher Rims, exactly correct pattern as per the 1890 patent Number 16,783. It was patented in USA in 1891, Number 448,793. This tyre was manufactured by the North British Rubber Co of Edinburgh. It was the FIRST type of tyre to be easily detachable from the rim, and the first serious competitor for Dunlop.” Its age is known to be pre-1892 because… “In 1892 these tyres were fitted with completely rubber inner tubes, rather than this earlier tube with canvas liner… which comes with this bicycle. The tube has a canvas liner impregnated with rubber, and a large one-way only valve. The canvas prevented the tyre being over-inflated and popping off the rim. Tyre, tube and huge one-way valve are complete although the rubber is hard.”
Unfortunately its early history is unkown. It has a lot of similarities with the Sparkbrook illustrated in their 1893 catalogue (below), though obviously by 1893 that company had progressed to ball socket steering rather than the open steering on the earlier machine featured here. We may never find conclusive proof of the maker of this wonderfully preserved bicycle, but it is of serious historic interest and worthy of a museum exhibit. Because, as well as having survived in such complete and original unrestored condition its other attribute is that it retains its original 30 inch pneumatic front tyre, though it is not suitable for fitting to the wheel. I’ve photographed it separately.
Below, you can see the front and rear Bartlett Clincher Rims, with their unique style of valve seat.
ORIGINAL BARTLETT 30″ PNEUMATIC TYRE
NORTH BRITISH RUBBER CO
William Erskine Bartlett was born at Granby, Hampshire, Mass., USA in 1830. He emigrated to Scotland around 1870.
According to the London Gazette of 27 September, 1870: “…William Erskine Bartlett, of Edinburgh, North Britain, Assistant Manager to the North British Rubber Company, has given the like notice in respect of the invention of “improvements in the construction of elastic tyres for carriage wheels.”
In 1890, as general manager of the North Bitish Rubber Co, he patented a “clincher tyre’ (below) by broadening an earlier patent application for a detachable non-pneumatic tire to include pneumatic construction.”
In 1891, the Bartlett Clincher tyre, produced at Castle Mills, Edinburgh, became the first detachable pneumatic introduced to the British market.
Having purchased the Westwood rim patents as well as other pneumatic tyre patents, the Dunlop Pneumatic Tyre Co bought the Bartlett patent in 1897.
The North British Rubber Co was renamed Uniroyal in 1966.
1893 SPARKBROOK CATALOGUE EXTRACTS
SPARKBROOK MFG Co LTD
Much Park St, Coventry
Originally established as the National Arms & Ammunition Co in Birmingham in 1872, the company had some early success in obtaining government contracts, producing Snider carbines and Martini rifles for Ordnance contacts as well as some Colonial and European orders. The company ran into financial difficulties and was liquidated in 1883. In 1886 the Government purchased the defunct factory on Montgomery Street, in Sparkbrook, Birmingham. This factory became known R.S.A.F. Sparkbrook. Complete rifle production began around 1889 with the Lee-Metford rifle, quickly followed by the Lee-Enfield rifle and the Mk I SMLE rifle. In 1906 RSAF Sparkbrook was sold to BSA. As the plant was less than a mile from BSA’s Small Heath plant, the facility was used for general engineering work, rather than small arms production, although a few SMLE Mk I* rifles were produced there in 1906 (marked BSA SPARKBROOK). At the outbreak of the Great War it was producing small tools, car bodies and parts for the BSA 13.9HP motor cars.
The Sparkbrook Manufacturing Co was established in 1883 (the same year that National Arms & Ammunition Co was liquidated) and a move made to Much Park St, Coventry, then in 1889 to Paynes Lane, Coventry. In 1898 it also had showrooms at 14 Holborn Viaduct (where S.H. Stevens was the manager), as well as at 133 Hammersmith Rd and 26-28 Shaftesbury Ave, London.
1862 NORTH BRITISH RUBBER Co ADVERTISEMENT