Spanish Patent # 153,083 - Zeus

Spanish Patent 153,083 - Zeus main image

This is the earliest derailleur patent that I have been able to find that is attributed to Nicholás Arregui Gallastegui, the founder of Zeus. The clear, precise, technical drawings show a cleanly executed copy of a late 1930s Simplex Champion du Monde.

It fits with my overall picture of Zeus as a company that was big on no-fuss technical quality but a bit light on game-changing originality.