![]() However his patent claim states "I do not claim as my invention a tumbler composed of two disks, one working within the other, such not being my invention.", but there is no reference to prior art of this type of lock. ![]() Joseph Loch was said to have invented the modern combination lock for Tiffany's Jewelers in New York City, and from the 1870s to the early 1900s made many more improvements in the designs and functions of such locks. Treat in 1869 describe themselves as improvements, suggesting that such mechanisms were already in use. US Patents regarding combination padlocks by J.B. ![]() Gerolamo Cardano later described a combination lock in the 16th century. 1200) also made combination locks, two of which are kept in Copenhagen and Boston Museums. In 1206, the Muslim engineer Al-Jazari documented a combination lock in his book al-Ilm Wal-Amal al-Nafi Fi Sina'at al-Hiyal ( The Book of Knowledge of Ingenious Mechanical Devices). Attached to a small box, it featured several dials instead of keyholes. The earliest known combination lock was excavated in a Roman period tomb on the Kerameikos, Athens.
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