The Simplex

[Grassy]

riverrun hopefully can come thru

Let's see if I can help. First of all, I searched for the patent number:

Pictures are from the bay and it is of British manufacture, pat no. 12224/12.

Turns out, that patent is for a "Drying chamber".
I looked closer at the pictures and the patent number is actually 11224/12.
Or as Britsh patents from that area are now numbered GB191211224

And here it is:

https://razors.click/patents/GB191211224/

Loeb and Twigg, the inventors, also invented the "Maws Ajusta" razor at about the same time (see Waits)

http://razors.click/patents/GB191203936/

WOW! Thanks for looking that up, that is some great information and much appreciated.
So when looking up a British patent the last number is the year and needs to be in full preceded by GB, that is useful knowledge . And check you have the number written down right (doh) I think I took that from the ebay add but I should have checked, sorry.

The patent seems to be suggesting an improvement over a clamped unmentionable razor like a Gillette and ignoring razors like the Gem Junior which already used stops and a spring at the back on a thin blade. The cap is not necessary to the design.
Anyway thanks again for the really helpful information. 

Thanks Intersting, might be a lead. Although it is a German company it could have been British made. I'm thinking it probably took a wedge although many early flat blade razors also came with a stropper. 
I'll have to Google some more.

The patent is clear: the razor takes thin blades. The slot in the stropper is too narrow for wedge blades as well. I bet a modern GEM blade should do the trick.

That would be the icing on the cake if I could just pop an unmodified Gem straight in!

P.S. if any new members have not seen the razors.click site you should take a look as there is a lot of great information. I particularly like the ASR timeline but there is much more