1. REVERSE ENGINEERING THE HINGE ON GLASSES By Thomas
Crowley
2. GLASSES HINGE I am going to explain how the hinge to a pair
of glasses works. purpose of hinge is to allow the arms and ear
pieces of frame to fold, allowing it to be more compact The purpose
of glasses to allow people see clearly (whether in sunlight or
prescription)
3. POWER MODELSource 1st Action 2nd Action Hand/Fingers Opens
the hinge Close hinge Spring Snaps hinge to full Snaps hinge to
full open position closed position Human/Automated Human open/close
Spring keeps that the hinge way
4. HOW IT WORKS Temple of glasses open/close. Hinge snaps
temple closed with small added force Hinge snaps temple opened with
small added force
5. ASSEMBLED
6. UNASSEMBLED
7. ACTION
8. RESEARCH Internet Found out its a Spring-loaded hinge No
additional info
9. HISTORY Idea from Assyrians, used clear crystal to magnify
objects 700 B.C. Romans used glass jars with water Salvino DArmate
of Florence, Italy made first wearable glasses in 1284 A.D.
Nicholas of Kues, Germany made the first near-sighted lenses in
1604 Benjamin Franklin made Bi-focal glasses in 1784