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Sidelock
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Sidelock
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We've had lots of threads regarding sleeving. Pete Mikalajunas, Raimey and Toby Barclay have provided much of the information.
Unfortunately some of the images and links have been lost to time and the photobucket fiasco.
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=224372
Toby's very helpful images here are gone
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=177741

Here is one I saved

[Linked Image from photos.smugmug.com]

Toby states here that sleeving started in the 50s, but I have not found by whom, nor who first used the term "sleeving" in reference to shotgun barrels
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=561115

Another helpful thread
https://www.sportingshooter.co.uk/f...-demibloc-and-monobloc-barrels-1-4766158

The process appears to have originated with Henri Pieper's "Diana Breech" patent of August 23, 1881

[Linked Image from photos.smugmug.com]

The tubes were inserted from the REAR of the breech; Forest & Stream 1882

[Linked Image from photos.smugmug.com]

Leaving a significant step from the breech to the barrels

[Linked Image from photos.smugmug.com]

[Linked Image from photos.smugmug.com]

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Sidelock
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The "Modified Diana" is buried in Pieper's Gun Lock Patent of Dec. 20, 1892 No. 488,366
https://patents.google.com/patent/US488366A/en

" I adopt the following method of securing (the barrels). I form the cartridge chambers for breech loading in the solid steel block, into the front end of which the barrels are screwed so that their bores coincide with their respective chambers" and are brazed or soldered.

[Linked Image from photos.smugmug.com]

Leaving no step; steel breech and "Washington" tubes

[Linked Image from photos.smugmug.com]

The 1895 Montgomery Ward catalog

[Linked Image from photos.smugmug.com]

1897 Sears

[Linked Image from photos.smugmug.com]

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Sidelock
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An unfortunately undated Beretta catalog page showing step and non-step techniques

[Linked Image from photos.smugmug.com]

A 1922 Beretta Brevetto

[Linked Image from photos.smugmug.com]

Modern Beretta O/U in which the tubes have separated from the monobloc

[Linked Image from photos.smugmug.com]

Most Italian makers use the technique. The 2013 Benelli Patent US20130174462 A1 slides the smaller tube from the breech into the barrels

[Linked Image from photos.smugmug.com]

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Sidelock
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This is Researcher's J. Stevens Arms & Tool Catalog No. 52 c. 1906 showing the "Demibloc"

[Linked Image from photos.smugmug.com]

I assume this is the same technique used on the later N.R. Davis and Crescent-Davis guns?

[Linked Image from photos.smugmug.com]

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Sidelock
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So the question is who modified the Pieper technique specifically for replacing barrels using the original breech section?

I couldn't find an online copy of the 1954 Rules of Proof but possibly someone could see if the sleeving rules are contained therein?

And a sleeve job that was apparently inexpertly performed; 1891 10g GHE sleeved to 12g and restored...for awhile wink

[Linked Image from photos.smugmug.com]

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There was quite a good thread sometime back in the DIY forum that several very knowledgeable forum members posted on detailing the methods they used for the process. I believe Gunman, Gunmaker and Dennis Potter all posted in that thread.

I do rembering reading who first developed the technique for the British trade but whe the man was and where I read it I cannot recall.


http://www.bertramandco.com/

ACGG Professional metalsmith, firearms import services.
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Sidelock
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Ooopsiie=bye bye 10 bore Parker- bye bye


When The Man In Black Comes Around- Rev: 6-8
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I think 12 bore at the time of the unpleasantries

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Sidelock
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A good friend sleeved a good number of Parkers in the early 50's. His name was Bob Perscha and he is long gone. I believe that the Le fever brothers in NY did very good work at that time.

Bill

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In this thread Sleeving, Salopian said the inventor was "The very reason sleeving came into existance at all was because people didn't want to pay a lot. I was fortunate to know Mr. Christian Ashthorpe who is believed to be the inventor of sleeving, who sleeved a Mr. Herbert Sandals Purdey in 1948/49 for �15 which was about two weeks wages then. Interestingly enough Purdey moved hell and high water to stop barrels from being sleeved, but eventually they got Christian to sleeve guns for them."

Ken

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