French Patent # 848,081 - Simplex

French Patent 848,081 - Simplex main image

This is curious - it appears to describe a system using a helical groove and peg that is extremely similar to that that had been used by Cyclo for many years before 1938. I am also unaware of Simplex ever using anything like this system.

Perhaps it was a spoiling patent, designed to mess with Cyclo’s business - or perhaps there is some devilishly clever and original detail here that I am missing.