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locked breech mechanism
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WhiskeyCharlie
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April 6, 2016 - 3:00 pm
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Hi all,

I wonder if anyone knows what happened to the Locked Breech Revolver patent:

Firearm
US 4807380 A
Abstract
A locked breech mechanism for a firearm having a trigger, cylinder, and hammer and in which the cylinder is adapted to accommodate cartridges such as a bottleneck cartridge. The breech mechanism includes a breech member disposed between the hammer and cylinder in combination with an operating member. The breech operating member is in the form of a yoke member having a rest position in which the breech member is disengaged from a cartridge in the cylinder, and an active position in which the breech member is engaged with and locked against the cartridge.
And do we know who Robert E. Domian the inventor is. Were any prototype guns made?
US4807380-2a.jpg
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Steve
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April 6, 2016 - 6:52 pm
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Is this a Dan Wesson patent, or directly related to Dan Wesson revolvers?

I went to a bookstore and asked the saleswoman "Were is the Self Help Section?" She said if she told me, it would defeat the purpose.

George Carlin

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WhiskeyCharlie
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April 6, 2016 - 7:12 pm
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Yes, to Steve and all interested, from what I can tell the patent was assigned to Dan Wesson Arms, Inc. by the inventor Robert E. Domian.

If you Google US 4807380 A you will see drawings that look to be based on a Dan Wesson revolver.

I thought someone hereabouts would have more info. I'm interested because I have considered a solution to the problem of a bottleneck ctge. in a revolver on my own. In fact I was a little disappointed some years back when I discovered this patent.

I'd like to know if this design worked or not.

My bad, I should have given more background.

Warren

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rwsem
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April 6, 2016 - 8:01 pm
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Bottleneck designs in a revolver aren't new..  and DWs were available in 32.20..  Others include many wildcats by Gary Reeder and of course .357/44 Bain and Davis.  I'm sure there are more but that's off the top of my head.

Technically, the glass is always full; half liquid, half air....

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Steve
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April 6, 2016 - 8:02 pm
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Thanks, I should have researched more closely. I see that Patent info in our archives. There is nothing there to indicate that DW ever did anything with this.

I went to a bookstore and asked the saleswoman "Were is the Self Help Section?" She said if she told me, it would defeat the purpose.

George Carlin

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man of blues
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April 6, 2016 - 8:04 pm
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oops, I didn't look close enough before making my post... I was way off on the description below, sorry.

 

I believe portions of this were worked into early model Colt's..

http://images.fineartamerica.com/images-medium-large-5/1903-colt-revolver-patent-drawing-jon-neidert.jpg

http://images.fineartamerica.com/images-medium-large-5/colt-revolver-patent-art-1881-3---daniel-hagerman.jpg

 

 both are in some way similar, the actuation and retraction of the pulling the pin from the rear of the cylinder differs, but still the protrusion of a pin, from the breach face, locking and allowing the cylinder to pivot upon it, is typical.

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man of blues
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April 6, 2016 - 8:11 pm
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Steve said
Thanks, I should have researched more closely. I see that Patent info in our archives. There is nothing there to indicate that DW ever did anything with this.

oops, I didn't look close enough before making my post... I was way off on the description below, sorry.

 

I believe very early Wesson manufacture utilized this, but way before it was ever noted as a Dan Wesson revolver, interestingly I watched something on Netflix, about inventors last week, and it did take the designs of the first Wesson (Danial) revolvers into a competition and race for patents with Colt.

The story was wrought with severe bogus timelines, and even worse examples, like showing cartridge firearms in place of the arms of the current mfg which were cap and ball.. very annoying to say.

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SCORPIO
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April 7, 2016 - 3:39 pm
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Not sure I fully grasp what is being presented here.  Is this some kind of mechanism to move the cylinder forward towards the forcing cone?  If so, there is a foreign made pistol, can't remember the name, that does this, uses special ammo too.  If not, could somebody please explain to me what this is supposed to do?

Yours in ignorance, SCORPIO

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man of blues
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April 7, 2016 - 4:08 pm
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its the original patent drawing for a system that has a retractable pin, that protrudes into the bore behind the cartridge, that locks the rear of the cylinder from rotating and lateral movement and also forces a bottle necked cartridge to its correct headspacing at the tapered shoulder, as it is being fired simply put, my initial posting was wrong saying it was a rear center pin, sorry, I didn't look close enough before posting, and I was viewing it on a mini tablet screen... my bad.

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SCORPIO
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April 7, 2016 - 4:32 pm
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Anything worth doing is worth doing well.

My father

If a man designed it, and a man built it, then a man can fix it.

My grandfather

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Steve
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April 7, 2016 - 6:40 pm
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SCORPIO said
Not sure I fully grasp what is being presented here.  Is this some kind of mechanism to move the cylinder forward towards the forcing cone?  If so, there is a foreign made pistol, can't remember the name, that does this, uses special ammo too.  If not, could somebody please explain to me what this is supposed to do?

Yours in ignorance, SCORPIO

I think the gun you are referring to is a Nagant revolver. Shot one once and it was the most brutal trigger pull I have ever known.

I went to a bookstore and asked the saleswoman "Were is the Self Help Section?" She said if she told me, it would defeat the purpose.

George Carlin

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SCORPIO
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April 7, 2016 - 7:17 pm
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Anything worth doing is worth doing well.

My father

If a man designed it, and a man built it, then a man can fix it.

My grandfather

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man of blues
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April 7, 2016 - 8:38 pm
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Steve said

SCORPIO said
Not sure I fully grasp what is being presented here.  Is this some kind of mechanism to move the cylinder forward towards the forcing cone?  If so, there is a foreign made pistol, can't remember the name, that does this, uses special ammo too.  If not, could somebody please explain to me what this is supposed to do?

Yours in ignorance, SCORPIO

I think the gun you are referring to is a Nagant revolver. Shot one once and it was the most brutal trigger pull I have ever known.

agreed on x10...

I fired one back around '78-79, that a pal brought/shipped/ I dunno how it came back/  back from Viet Nam, and it was a cutdown but nice and clean piece, and it was adapted with a silencer/suppressor of sorts.. which was crude but effective. It did quiet the thing down when using the specific cartridges made for it, but didn't do much for some of his home made ammo.. I fired 2 cylinders thru it, and said thanx, not my cup o' tea... I have to say the cartridges looked really funky, and I didn't want to shoot it till I watched him shoot it, to make sure it wouldn't blow up..

the cases fully enclosed the slug, and looked like an uncircumcised pecker in the result.. (sorry, but just being descriptive..easy boy's) and it was necked down and the forward end of the case actually entered the forcing cone / lead in on the barrel when it was forced forward.. very interesting thing, but the cases he had looked rough, I'm sure some precision trimming, and careful cartridge work with what we know today, would have been a great thing to have back then.

as weird as it was, now I think he had a nice collectible, even though it had like a 15# trigger pull, on a single action revolver..

he's long since passed, I wonder where/who ended up with it..? he never married.

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