De Lisle type rifle/carbine - help needed with identification

[Warren]

The sound signature of the DeLisle was certainly different than the Sten Mk.2S and at least we are comparing contemporaries there. The DeLisle did exhibit a much different sound than the Mk.2S but I much preferred the DeLisle. The single shot without the bolt slamming shut was much more to my liking and also the sighting on the DeLislel was FAR superior to the Sten....(my opinion). Sound moderation has developed by leaps and bounds over the years with some of the best kit still coming out of the UK (again my opinion and even though the good Doctor who was in to see you this summer at Warminister claims to be the best) I still find the UK has some of the best kit around out there. Mind you the Madsen K with a can has to be one of the best up until recent years. However; again a much different signature and I don't have the decibel readings, but to the ear it is a different sound that one does not associate with a firearm. Which is best: the apple or the orange???
On what public domain can we find the DeLisle papers ?? or are they just available for public viewing now??

[bigduke6]

On what public domain can we find the DeLisle papers ??

Warren,

You can download his patent, description and 2 small drawings, I have a copy of the full size drawing and with the two small drawings of the striker, and the modified bolt head.

Patent application: No 3756/43 & 7964/43 May 19, 1943 (it should all come under GB 579168 (A) )

[Peter Laidler]

Even using my basic physics with a smattering of Boyles law or just the theory of the dissapation of gas under pressure, it's easy to see that the sound reducing properties of the deLisle were medieval compared with what we have now or can I be cruel, and suggest that they were archaic in their sound reducing qualities even in the early 40's......... The National Physics Labs in Cambridge got to grips with it. In six days they invented heaven and earth and on the seventh, they came up with the Sten silencer........... But I am biased of couurse. IT makes me feel like getting one out to play with it.

And that's even before we get on to the arch genius George Patchett with his method of pressurising the exhaust port.......

Nope........... on reflection, if I wanted something that was really quiet.........., something that sounded like a muffled sheep cough, I'll take the L34. Looks to me like it's an L43 out tomorrow afternoon then!

[Archmoco]

IMG_20190928_203838.jpg Photo by archmoco | Photobucket

IMG_20191021_211235.jpg Photo by archmoco | Photobucket

I was doing some research on a recent purchase and I came across this post appreciate it is very old but though I would add these photos, seems like Sterling Arms did some suppressed conversions.