Belgian Patent # 399,082 - Balilla

Belgian Patent # 399,082 - Galli main image

This is a tantalising patent. It describes a rather thoroughly thought-out derailling fork mechanism to be used in combination with a chain tensioning arm - which is not described.

The inventor is Giovanni Galli of Torino - the founder of the Balilla and Galli brands, and the year is 1933 - which is very early for this kind of thing! It certainly looks at least as sophisticated as anything that Campagnolo or Vittoria had to offer at the time. Ah - what might have been!