Hi Richard
Thank you for the insights regarding the naming of the Hobbs Company.
The information caught my attention as I have a number of Hobbs’ prison locks (about six) in my collection. I have often wondered at the difference in the naming on the lovely plaques attached to two of them (see the accompanying photos).
One lock is marked ‘Hobbs & Co.’ The other is marked ‘Hobbs Hart & Co.’
What I am attempting to do here is use the information surrounding the various names of the Hobbs company to roughly date my locks.
Information sourced from the late Jim Evas’ excellent website (A Gazetteer of Lock and Key Makers) states that:
1: “The company started in 1851 and was formally registered as Hobbs and Co. in 1852.”
2: “But by 1855 it had become Hobbs, Ashley and Company.”
3: “Hobbs had stipulated that his name should always head the Company so it became Hobbs, Hart and Co. in 1860.”
Based on this, does that mean that my blue lock, labelled only Hobbs & Co, must have been made somewhere between 1852 (when the Company was registered as Hobbs and Co) and 1855 (by which time the Company had changed to Hobbs, Ashley and Company)?
With regard to the black lock, marked ‘Hobbs Hart & Co,’ would it be correct that it must date after 1860 (at which point the company became Hobbs Hart & Co, and remained so until its absorption into Chubb in the mid 1950s)?
Any insights from veterans of the trade would be most appreciated.
For me, the locks themselves are only part of the story. It is the history of them, their provenance and development that makes them what they are (to me, at least).
If any other members care to chime in, please do. And if anyone has literature on prison locks, particularly these Hobbs ones, I’d love to see it.
I have several original Hobbs catalogues I’m happy to scan and upload (if that is permissible - Brian, your views???)

