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

Yale door latch, early 20th century.

© Science Museum / Science & Society Picture Library


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.

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