history : bicycle : internal hub : epicyclic gearing : sun

from wikipedia : The first patent for a compact epicyclic hub gear was granted in 1895. This was a 2-speed but was not commercially successful. In 1896 William Reilly of Salford, England patented a broadly similar 2-speed hub which went into production in 1898 as ‘The Hub’. It was a great success, remaining in production…