Device for preventing the unscrewing and the loss of screws which serve for the pivoting and fixing of the sides of spectacles to their frame

摘要

The invention relates to a device enabling the screws of spectacles to be fixed without risk of unscrewing and loss. According to a preferred embodiment, the length of the lower lug of the side 2 or of the tenon of the frame is extended, and in this extra thickness is housed a grub screw which serves to fix the screw-pin 1 of the pivot. The device according to the invention is intended to prevent the screws of spectacles from unscrewing and being lost. <IMAGE>