An early S&W Competitor

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This isn't a Smith & Wesson, but I hope you all will tolerate its presence here because this gun was an early competitor to S&W's tip-up models. It was produced in the last couple of years of the Civil War, and then went out of production after patent violation claims were enforced against it.

S&W was operating under an agreement with Rollin White, who held the patent for a bored-through cylinder that could accept unitary cartridges. In an attempt to evade the White patents, several firearms were designed with different cartridge case designs and different cylinder loading approaches. This gun is a cup-fire revolver that was loaded from the front; empties were ejected to the front after firing. You did not need to remove the cylinder to reload, though you would obviously have to take it apart to clean it after firing black powder cartridges.

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The empty slot on the right side held an L-shaped steel piece with a knob handle that operated like a miniature bolt to push fired shells out the front of the cylinder.

This particular revolver is branded as an Eagle Arms Co. product. Other guns on this pattern were identified as Plant guns from New Haven Connecticut. I guess there was a K shortage when this barrel mark was created:

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The cartridges were rimmed in front to sit solidly in the cylinder, and the projectiles sat completely inside the cartridge case, like modern wadcutter ammo. The exterior cartridge diameter seems to be .32, which means the projectile and bore diameter are .30 caliber. The base of the cartridge was concave and rested against a flange inside the charge hole; the rear hole of each chamber had a smaller diameter than the front.

Cylinder front:

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Cylinder rear:

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Note the distinctive hawk's beak profile to the hammer nose. When the hammer fell, it actually intruded into the concave base of the cartridge, and the "beak" crushed the primed lower extremity of the cartridge against the wall of the chamber. In this regard it differed from the S&W rimfire revolvers, whose hammers crushed a primed rim against the rear face of the cylinder.

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This gun is in pretty good shape, despite the loss of the ejector rod and the chips out of the stocks where someone tried to remove them without realizing locator pins at the rear of the frame held them in position. I can repair these stocks as soon as I get a couple of scraps of cherry to work with.

The frame is silvered brass. I would say about 80% of the silver remains, though it is pretty tarnished by now. Barrel and cylinder are steel. No blue remains, but exterior pitting is minimal. The chambers and bore are actually in decent shape, considering the gun's age. (I'm guessing this is 1864 production; there are 1859 and 1863 patent stamps on the cylinder.


Chambers:

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Bore:

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I think I may be missing a trigger spring, as the hammer doesn't cock consistently unless I manually push the spur trigger forward to engage the sear at the end of the cocking motion. The mainspring is unbelievably tough. I backed the strain screw out a full turn and a half before I could comfortably cock the gun. It seems to have enough force to fire a round in that position, but of course that is just a supposition on my part.

I understand about 20,000 of these were made. This is number 5949. Next to the serial number on the butt are three small initials APC. Anybody know what those refer to? Other guns like this one also have those initials.

This gun sat on the shelf at my LGS for nearly a year with a ridiculous $900 price on it. When I was in there today, I noticed the price had crashed to a little over $200, and I thought, "What the heck, I'll take a look." It was labeled as a .32 rimfire, and it wasn't until I took the cylinder out and noticed its peculiarities that the light went on. And then I reached for my checkbook.
 
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David,

Thanks for sharing this bit of history. I am always interested in looking a pistol designs that tried to work around the Rollin White patent that S&W had a monopoly on until 1873.

I went online and found a picture of one of these that has the ejector rod still intact. It is kind of neat that the rod sits in that slot on the left side and looks like a bolt action rifle.

There is a picture of it here File:Eagle Arms Co revolver 1822.jpg - Wikimedia Commons
 
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David, You have a Plant Manufacturing Co. .30 caliber Cup Primed Pocket revolver, distributed by Merwin & Bray, New Haven, Conn. They were made in .30 cal & .42 Cal. cup fire cartridges and extra cylinders were availanle in percussion form. Barrel markings vary, some say Eagle Arms Co , like yours. Others have Plant Manufacturing Co,. New Haven, Conn,, or Merwin & Bray Firearms Co., or Reynolds, Plant & Hotchkiss, New Haven, Conn. on the barrel rib. A few are marked "A.L.Ide", a gunsmith in Springfield, Mass. The eagle Arms guns are 6 shots, the others are 5 shots. The patent date of July 12, 1859 was for a patent by Willard C. Ellis and John M. White, of Springfield, MA. for their cup primer cartridge. They improved on their idea with another patent on July 21, 1863. Both dates are on the cylinder of these revolvers. This patent was assigned to Henry Reynolds. Reynolds had previously been involved with Ebenezer Plant, Amzi Plant & Alfred Hotchkiss in making the Prescott revolver and had been forced out of business by Smith & Wesson as the Prescott infringed in the Rollin White paptent held by S&W. The full story is too long to go into here, however there are a number of changes and variations in these Plant revolvers, some have iron frames, most are brass, frames can be solid or hinged, etc. and are an interesting study in firearms evolution. ( David, The trigger spring is a small v shaped spring, easily made out of a piece an old alarm clock mainspring, or a generic spring can be bought from Brownells and cut to fit.) Ed.
 
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Howdy

Thanks for the history lesson. I too am always interested in attempts to get around the White patent. I am not familiar with the cup primer cartridge.

If the rim was in front, what prevented the hammer blow from pushing the cartridge forward?

Thanks
 
Howdy

Thanks for the history lesson. I too am always interested in attempts to get around the White patent. I am not familiar with the cup primer cartridge.

If the rim was in front, what prevented the hammer blow from pushing the cartridge forward?

Thanks

David noted that the bullet was fully seated in the case, like a .38 wadcutter round. Also note that the front of the cylinder is recessed so that the rim is flush with the cylinder. If you visualize the cartridge rim encircling the case mouth instead of being at the base, you can see that the rim would butt up against the end of the barrel when the gun was fired. It would go forward only the amount of the barrel/cylinder gap.

It'd be helpful if someone could post a picture of a cartridge - I suppose they'd be quite rare.

Edit: found a diagram of one, although it doesn't seem to have a prominent rim.

Eagle-h.jpg
 
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Howdy

Thanks for the history lesson. I too am always interested in attempts to get around the White patent. I am not familiar with the cup primer cartridge.

If the rim was in front, what prevented the hammer blow from pushing the cartridge forward?

Thanks

As Tom pointed out, close tolerances. If you look at the photo, you will see that the cylinder is only a couple or three thousandths of an inch away from the front and back faces of the window in the solid frame. There was no way the cartridge could ride forward. Also, because of the design of the hammer nose and cartridge base, the impact that ignited the cartridge was essentially a sideways impact rather than a strike in line with the cartridge. A resolution of forces diagram would show very little (if any) forward component to the hammer impact on the cartridge.

As an aside, the frame is designed so that when a full cylinder is held in position by the cylinder stop, no cartridge has the ability to fall out of the cylinder. You have to partially cock the revolver and rotate it slightly to expose the loading and ejection groove in the frame.
 
Ed, thank you for the additional info. I had heard most of those names but did not know how they interacted with one another. I have a clearer picture of the cup-fire history now.
 
Thanks

This thread is a great example of why I love this place :-))
 
Howdy Again

Thanks for the explanation, it makes perfect sense. I suspected as much, but I was not sure.

Do you know anything about the tapered cartridge Colt developed to get around the White patent? It was tapered back from the bullet so it had to be inserted in the front of the cylinder. I have always wondered why that cartridge was not shoved forward by the hammer blow too.

Might it have been the same, trapped by the barrel from moving forward?
 
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