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| | History of Locks |
 | | They were, lock and key, in all their parts made of wood; of which material, he believed, were others which had been found in Egyptian Catacombs, thus making the Egyptian so like the Faroese in structure and appearance, that it would not be easy to distinguish one from the other. |
 | | To keep the dead bolt of these early locks in the locked or unlocked position, a spring was commonly fitted or, alternatively, a single acting tumbler which was no more than a simple catch or hook, without any security value, to be lifted by the key as it was turned. |
 | | From the Barron and Chubb locks, which demonstrated the protective values of their double acting detainers, whether tumblers or levers, it was a logical process to develop a lever lock in its simplest form, that is to say, without detectors or other additional feature. |
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