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Locks and Security News: your weekly locks and security industry newsletter
24th May 2023 Issue no. 657

Your industry news - first


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Who Inspires Who?

* Detainer.jpgThis article is another in a series of 'tasters' from sister-publication Locks & Security Magazine.

By Brian Morland - Curator of 'The History of Locks' Museum.

Everybody knows the Chubb Security Range lock, the 3G110, sometimes also known as the Castle Security Range. Some long standing locksmiths will also know that it was Bill Stanton, whilst with Chubb's R&D department, who developed and patented the lock on behalf of his firm.

The inspiration, to Bill, for this lock was made by the German firm Kromer and called the Se-Kro mortice lock. The lock failed to establish for Kromer. Bill had seen this lock on one of his many trips to the Kromer factory and felt he could not only improve the design but also improve the security. This he did and the lock is known as the 'Chubb Security Range.'


To further increase the key differing whilst at the same time improving master key systems, the open ended Detainer in figure 6 is used. This is the type of 'lever' incorporated in certain security range locks. You can read more about this is April's edition of Locks and Security Magazine, available on line, on your phone and by subscription.


20th April 2016

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