This is Edmund Hodgkinson’s third and final patent relating to his Gradient derailleur system. In 1904 Edmund Hodgkinson sold his patents to the Terrot bicycle manufacturing company based in Dijon in France.

• Publisher: UK Intellectual Property Office
• Inventor: Edmund Hugh Hodgkinson
• Country: UK
• Date: UK application filed March 1899
• Derailleur brands: Gradient
• Derailleurs: Gradient