Yale door latch, early 20th century.

Yale door latch, early 20th century.
3 3 c m
40cm
actual image size: 32cm x 25cm

Description

The yale lock was invented by Linus Yale Jr between 1860 and 1868. His cylinder lock used pin-tumblers similar to those used in ancient Egyptian locks. The flat key is inserted and its serrated upper edge raises each pin to the correct height so that the inner cylinder can be turned.

© Science Museum / Science & Society Picture Library

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