  
A Day & Newall Parautoptic bank lock that was imported prior to the Hobbs manufactured units. Its of the original design before the protector patent and the spring loaded wiper was added.
Lock: case size 203mm wide x 159mm high. 6 lever. Key: 102mm.
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A Hobbs Paututoptic Bank Lock. Note that false notches have been done away with and a anti-pressure device added as well as a spring loaded wiper to defeat Linus Yale Jr.'s method of reading lever bellies.
Lock: case size: 203mm wide x 158mm high. 6 lever. Serial number 600 also dated 1863. Key: 135mm
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The Parautoptic Lock
Alfred C Hobbs came to England in 1851 as the representative of Day & Newall, the American company that manufactured the Parautoptic bank lock.
Hobbs quickly gained a reputation of picking his competitors locks, whilst at about the same time the company of Day & Newell failed. He quickly formed his own company and started to manufacture locks capitalising on his new but enviable reputation. |
