The drawings show Allen head pivot bolts and the new adjustment screw positions, but the old grub-screw cable clamp.

• Publisher: US Patent and Trademark Office
• Inventor: Lucien Juy
• Country: USA
• Date: US application filed December 1965, French application filed December 1964
• Derailleur brands: Simplex
• Derailleurs: Simplex Prestige (537)