Forum: Pre Industrial Revolution Locks
Moderator: Awaiting/TBA |The lockmaking scene changed late in the 18th century when the Industrial Revolution got under way and locking principles started to be explored. This forum therefore is for the many and varied interesting locks before 1778 where the fixed ward or spring barbs were the means of security.
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Never seen a mappins patent with only 4 guards. Odd. It's chicken and egg, I find that the key will not want to go in until it's already cut as the sharp edge on the blank does not move easily...
Is it a Mappin