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| Picture No | 11939598 |
| Date | 1896 |
| Description | William Spears Simpson |
| Details |
William Spears Simpson, English inventor of the cycle lever chain, similar to the one cyclist use today, formed by linked triangles with two levels, inner level was driven by the chain-ring and the outer drove the rear cog.
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| Source | Photograph by H. S Mendelssokn in 'St Paul's', 27 June 1896, page 618 |
| Credit | Mary Evans Picture Library |
| Restrictions |
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