Colt Paterson Revolver

On February 25, 1836, Samuel Colt received U.S. Patent 9430X — described in the filing as "a new and useful Improvement in Fire-Arms" — and simultaneously secured patents in England and France. What those documents described was the Colt Paterson revolver, the first commercial repeating firearm to employ a revolving cylinder with multiple chambers aligned to a single, stationary barrel. Every practical revolver built since owes something to that mechanism.

The gun took its name from where it was made: Paterson, New Jersey, home of the Patent Arms Manufacturing Company, Colt's first factory. Between 1836 and 1842, that facility produced roughly 2,350 revolving pistols, 1,450 revolving rifles and carbines, and 462 revolving shotguns before the business failed.

A creditor named John Ehlers continued selling pistols — approximately 500 of the total 2,850 — through 1847. The numbers were small. The consequences were not.

The Paterson did not win its era commercially. It prepared the ground for everything that came after — and in doing so, it rewired how Americans thought about personal firepower.

Origins and Inspiration

Colt himself credited the ship Corvo with the inspiration. Bound from Boston to Calcutta in 1830, he studied the ratchet-and-pawl mechanisms aboard the vessel — a windlass or capstan, depending on which account you read — and carved a wooden model of a rotating cylinder pistol during the voyage. That model is now exhibited at the Wadsworth Atheneum in Hartford, Connecticut. Some historians believe he also saw examples of the Collier Flintlock Revolver when the Corvo docked on the River Thames and he toured the Tower of London. Colt is said to have later acknowledged that the Collier design did influence his own work, and the Collier patents were entered as evidence in a 1851 patent infringement case Colt brought against the Massachusetts Arms Company.

Timeline showing the evolution from early revolving firearms to the Colt Paterson

Prior Art and Patents

The distinction matters because Colt did not invent the revolver. Elisha Haydon Collier of London had produced revolving flintlock pistols, rifles, carbines, and shotguns from roughly 1818 to 1827. Artemus Wheeler of Concord had patented the core revolving design in the United States on June 10, 1818. Revolving matchlocks existed as far back as the 16th century.

What Colt contributed was the first reliable mechanical system for automatically indexing and locking the cylinder in battery using the motion of cocking the hammer.

He built it around the more reliable percussion cap ignition system rather than flintlock.

Manufacturing and Funding

Colt spent the early 1830s developing the concept and secured his funding with help from his second cousin Roswell Colt, a prominent figure in Paterson's industrial establishment whose family had deep ties to Alexander Hamilton's Society for Establishing Useful Manufactures (S.U.M.), the economic engine that made Paterson America's first planned industrial city. Roswell Colt provided financial resources and factory space.

After Colt secured approximately $300,000 in total funding, the Patent Arms Manufacturing Company opened its four-story brownstone Gun Mill on March 5, 1836, just below the Great Falls of the Passaic River. The first revolvers did not leave the factory until the fall of 1836. The company gave Colt a patent monopoly in theory. In practice, it gave him six years to prove the concept before the money ran out.

Model Variants and Specifications

The Paterson family spanned several distinct configurations — No. 1 Pocket Model through No. 5 Holster Model — with calibers ranging from .28 to .36 inches. The No. 5 Holster Model, commonly called the Texas Paterson, was the largest, chambered in .36 caliber with a 7.5-inch barrel, an overall length of 13.75 inches, and a weight of approximately 1.2 kg in its levered configuration. About 1,000 were produced. The smaller pocket and belt models served personal carry markets; the Holster Model was built for cavalry.

Mechanical Operation

Mechanically, the design was single-action throughout: cock the hammer, and the internal hand rotated the cylinder, bringing a fresh chamber in line with the barrel while a spring-loaded bolt dropped into a notch on the cylinder to lock it at full cock. As the hammer came back, the folding trigger dropped down from the frame into firing position — one of the Paterson's signature features, keeping the profile snag-free when holstered. The rear sight was a notch in the tip of the hammer; the front sight was a blade on the barrel. The barrel itself was retained on the central arbor by a transverse wedge — another design feature that flowed directly into subsequent Colt percussion revolvers.

Mechanical operation sequence of the Colt Paterson's single-action mechanism

Loading Procedures

The early models (1836–1838) required partial disassembly to reload. The procedure involved:

1. Draw hammer to half-cock
2. Push barrel wedge from right to left
3. Pull barrel and cylinder off arbor
4. Charge each chamber with powder and ball using separate lever tool
5. Reassemble barrel and cylinder
6. Cap each nipple

Colt sold spare cylinders with the guns precisely because field reloading was impractical — the standard tactic was to carry a pre-loaded spare and swap the whole cylinder rather than recharge in place. That presented genuine hazard: a dropped, capped cylinder could discharge.

In 1839, a hinged loading lever and capping window became standard on new production and were retrofitted to most earlier guns. When Patersons with loading levers reached Texas in 1842, Ranger Captain John Coffee Hays noted explicitly that his men could now reload from horseback.

Performance and Limitations

Muzzle velocity ran approximately 879 feet per second with a 22-grain charge of FFFg black powder — comparable in energy to a modern .380 ACP cartridge. Accuracy from a Uberti replica using careful one-handed technique produces groups of 2–3 inches at 60 feet. The No. 5 Belt Revolver was effective to about 50 yards under ideal conditions; from a moving horse, useful range collapsed to feet rather than yards.

The Paterson's weaknesses were real and ultimately fatal to the company:

• Open-top frame structure could flex under hard use
• Tight tolerances made production slow and expensive
• Percussion caps could fall into works causing malfunctions
• Parts were not truly interchangeable
• Fragile for sustained military use

The United States government tested them during the Second Seminole War in Florida, praised the firepower advantage initially, and then condemned them as excessively fragile and prone to malfunction. That assessment wasn't wrong. It was also not the whole story.

Texas Acquisition

The gun's real test came in Texas, and Texas is where it earned its reputation.

The Republic of Texas purchased 180 revolving shotguns, rifles, and handguns for the Texas Navy in 1839. When Samuel Houston disbanded the Navy in 1843, Captain John Coffee "Jack" Hays of the Texas Rangers armed his ranging companies with the surplus pistols. The Comanche were the problem — mounted, fast, and capable of firing arrows faster than any rider could reload a single-shot muzzleloader.

Five shots per cylinder, with a spare cylinder in the belt, changed that equation.

Ranger Combat Experience

The Paterson proved especially decisive at the Battle of Bandera Pass, where each Ranger armed with two pistols had ten rounds available without reloading. In the Battle of Walker's Creek in 1844, a small mounted Ranger force used their Patersons to defeat a larger Comanche group in a running fight — a confrontation where, without the repeating pistols, the Rangers would have been overwhelmed by bow fire the moment their muzzleloaders were empty. The lessons of both engagements were identical: sustained fire from horseback without dismounting to reload was a tactical capability that simply had not existed before.

How Texas Ranger combat experience with Patersons led to Colt's business revival

The Walker Connection

Captains Jack Hays and Samuel Walker became vocal advocates for Colt revolvers inside military circles. When General Zachary Taylor sent Walker to New York in 1846 to meet with Colt and discuss improvements, Walker was serving in the U.S. Mounted Rifles — not the Rangers — but his field experience with the Paterson was the foundation of the entire conversation.

The result was the Colt Model 1847 Walker, manufactured at the Whitneyville Armory run by Eli Whitney Jr. under a U.S. Ordnance Department contract for 1,000 revolvers, plus 100 civilian units. Colt's business was revived. The Walker's bones were pure Paterson, scaled up, simplified, and hardened for sustained military use.

The Walker itself was the most powerful revolver of the 19th century — loadable with a .44 caliber ball and up to 60 grains of powder, a charge more typical of a .54 caliber rifle — and that power level held the record until the introduction of the .357 Magnum in Smith & Wesson Registered Magnum Revolvers in 1935.

Commercial vs. Technical Success

The Patent Arms Company closed in 1842. By any standard measure of commercial success, the Paterson was a failure. Roughly 2,850 pistols in six years, a bankrupt manufacturer, and a government customer that thought the guns were too delicate — that is not a winning record.

What the Paterson accomplished was something different: it took the repeating handgun from theoretical curiosity to proven battlefield tool. The Collier revolver, for all its mechanical ingenuity, had been produced in fewer than 250 examples and never moved beyond the armories of the well-to-do. The Miller patent revolving rifles, manufactured in the 1830s in Rochester, New York, and later produced by William Billinghurst, numbered only a few hundred total. Pepperbox pistols — clusters of rotating barrels popular in the 1840s and 1850s — offered multiple shots but were notoriously inaccurate and unsuitable for military use. The Paterson was none of those things.

It was manufactured in the thousands, issued to military units, carried across two wars, and used in combat conditions that exposed every flaw in the design — and it still demonstrated that the revolving cylinder concept was sound.

Subsequent Colt Models

Colt's subsequent patent renewal in 1849 and aggressive litigation against infringers gave him a domestic monopoly on revolver development until the mid-1850s. That window allowed the Walker, the Dragoon series, the Model 1849 Pocket (over 300,000 produced), the Model 1851 Navy (approximately 272,000 produced), and the Model 1860 Army (129,730 purchased by the U.S. Ordnance Department alone during the Civil War) to define the revolver in American culture.

Every one of those guns traces its mechanical lineage — the wedge-retained barrel, the open-frame architecture, the single-action lockwork — directly to the Paterson.

Manufacturing Innovation

Colt's manufacturing approach at Paterson also pointed toward what American industrial production would become. His use of machine-made, interchangeable components — imperfectly realized in the Paterson but refined in Hartford — was central to what became known internationally as "the American system" of manufacturing. Colt himself explained the principle to the Institution of Civil Engineers in London, arguing that his manufacturing methods mattered as much as his guns. He was right. He died on January 10, 1862, as one of the wealthiest men in America.

Historic Preservation and Collecting

The physical site of the Patent Arms Manufacturing Company still exists within the Great Falls/S.U.M. National Historic District in Paterson, New Jersey. Listed as a Priority One threatened National Historic Landmark since 1988, the ruins of the Colt Gun Mill have received grant funding from the New Jersey Historical Trust — $359,000 in 1996 and $50,000 in 2020 — with additional funding sought through the New Jersey Department of Environmental Protection as of 2021. In 2015, the site was announced as part of a planned state historic park.

For collectors, original Patersons command extraordinary prices. In 2011, a cased 1836 Colt Paterson package sold at auction in Texas for $977,500 — at the time, the fourth most expensive gun ever sold at auction.

The Paterson is one of those guns that gets more interesting the more you understand what came before it. If you've handled a Collier flintlock revolver — or even just studied one closely — you appreciate immediately what Colt solved. The Collier's automatic priming mechanism was brilliant and fragile, the kind of mechanism a watchmaker would love and a cavalryman would destroy in a week. The Paterson stripped all of that away and replaced it with something a soldier could actually operate under stress.

That said, the Paterson deserves its reputation for mechanical fussiness. Tight tolerances plus black powder fouling plus small springs equals a gun that demands maintenance. The folding trigger is elegant until it jams. The absence of a top strap is a real structural compromise.

And reloading without the lever — which is how the gun shipped for its first three years — is genuinely tedious in a way that makes you understand why Rangers carried spare cylinders rather than recharging in the field.

That chain from battlefield failure to engineering improvement is exactly how military firearms development is supposed to work, and the Paterson is where that loop started in American history.

The gun that came out the other end — the Walker, then the Dragoon, then the 1851 Navy — is a direct product of everything the Paterson got wrong.

That's not a small contribution. That's the whole foundation.

• Wikipedia: Colt Paterson
• Athlon Outdoors: The Colt Paterson Revolver
• Mr. Local History: Col. Samuel Colt Got His Start in Paterson, New Jersey
• Rock Island Auction Company: The Colt Paterson and its Predecessors

Last Updated: February 27, 2026