French Patent # 768,793 - Super Rapid

French Patent 768,793 - Super Rapid main image

This patent was granted to Alfred Ondet and Louis Valat in 1934. I believe that Établissement Louis Valat manufactured the Super Rapid range of derailleurs and that they launched their first model in 1935. This patent could have formed the basis for the design of that model.

It is a strange contraption with, amongst other things, a sliding plate that is a bit similar to that of the 1935 BGA Velectrik.