i assume these to be one of deeley's patents, but cannot find enough information to clearly identify. can you tell me?

https://www.gunsinternational.com/guns-f...un_id=101417091

best regards, and hoping everyone remains safe and bored...
tom

The seller is a good and knowledgeable fellow. I'd bet he can tell you the ejector system.

That's a beauty. Interesting how the side plates are inlet. I like it very much.

Baker system I believe.

SKB is right. The Baker coil sprung ejectors. They were generally used on guns of lesser quality but I have just started work on a 1927 pair of Greener 16b FH50's and they use the Baker ejectors.
Totaly reliable until they're not, if you get my meaning! However very simple mechanism and easy to regulate if a little agricultural.
One thing to understand in that they really, really didn't understand the design parameters of coil springs, most C19th coil springs are poorly specified and quite liable to breakage or settling.
I will always remember trying to order some coil springs from a very experienced spring manufacturer for a Holland & Robinson ejector system. His simple comment 'they won't last long' confirmed by my observations before and since!

The Boswell I asked about has Baker ejectors. The gun is 119 years old and the ejectors still function fine.
I believe they lost popularity because the "boxes" are expensive to make and because Southgate ejectors are simpler and the v springs gave "crisper" ejection. The Brits love v springs.

I have a Greener with Baker ejectors that function perfectly at near 100 years old.

thanks to SKB and Toby...baker's was correct. a quick search pulled up a 2019 VGJ article by james reynolds, in which he goes thru several likely problem areas and gives his analysis of the design.

my question was based on my I. Hollis & sons 12 gauge, which has this type ejectors. it's a WR actioned gun, and i had supposed the deeley system would be the most likely usage. both ejectors work separately, but not always in tandem. reynold's article gives useful trouble shooting suggestions for that possibility.

https://www.vintageguns.co.uk/magazine/the-baker-ejector

Toby, I have a Greener Monarch Imperial 70 Guinea gun with those ejectors.

There is nothing intrinsically wrong with Baker's ejectors. They were fitted to loads of guns and worked just fine for the expected life of the gun but they do have several weak points of potential high wear as the Vintage Guns article explains.
All other ejector systems share this problem but it is a matter of degree.
If the Baker system is beautifully made, hardened and fitted (and not messed with), it may provide excellent service but the Perkes/Deeley has proved more reliable and the 'Southgate'/H&H AB even more so.
To illustrate, the worst 'Southgate' ejectors (in terms of finishing) I have ever dealt with have been cheap AYA boxlocks. However they are almost indestructible and continue to blind people in the clay stand queue long after the rest of the gun is a health risk!