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Emerging from the chaos of supplying the U.S. Army during the War of 1812, the War Department sought to foster domestic production of standardized muskets. Out of this industrial project arose an invention that laid the foundation for automation and mass production. Thomas Blanchard’s copying lathe was a product of a fluid interchange between public and private interests, expertise, and capital. Born into the mechanical milieu of the nineteenth-century Connecticut River Valley, Blanchard embodied the period’s spirit of ingenuity. His creation enabled complex, irregular three-dimensional wood forms to be manufactured at scale. Prior to the copying lathe, this was an artisanal task accomplished by master craftsmen.
Initially patented in 1819, the machine was applied to gunstock manufacturing at Springfield Armory soon thereafter. Through skillful patent management and licensing, Blanchard facilitated the spread of machines based on the same kinematics to the private sector. Commercial derivatives quickly sprang up to fabricate axe handles, standard-size shoe forms, and wagon-wheel spokes. Its diffusion across civilian industry catalyzed a technology stack and community of practice that gained fame as the American system of manufacturing.
From a historical vantage point, the copying lathe and its subsequent applications appear to have been adopted quickly. In reality, its full effects were not felt for decades. The story of the diffusion of Blanchard’s lathe from military to civilian life demonstrates the imperative for policymakers to exercise strategic patience in the face of long payoff timelines for unproven and experiential technologies. Although the impact of fostering new production approaches may not be immediate, the eventual results can be transformative.
Thomas Blanchard was born in 1788, the fifth son of a Revolutionary War veteran. His father “marched on the alarm” during the battles of Lexington and Concord, and after the war, settled as a farmer in Sutton, Massachusetts. Due to a stutter, Thomas was known in school as “Stammering Tom.” Yet he began to exhibit an early talent for innovation. At the age of thirteen, he crafted his first invention. His mechanical apple peeler was reputedly built to induce a girl he knew to shoulder his plough for a day by promising her a paring machine.
Five years later, his father sent him to work for his eldest brother Stephen making tacks in West Millbury, Massachusetts. Thomas’s role was to hand fasten the head of the tack to its point. Over a period of six years, he developed a machine to automate this tedious process and later sold the rights to it for $5,000. His local reputation for technical skill brought him to the attention of a nearby gun maker, Asa Waters.
The Waters family had entered the arms business as a result of the simmering U.S conflict with Britain, which would erupt into the War of 1812. As the nation prepared for conflict, Congress passed the 1808 Militia Act, requiring the federal government to purchase arms from private armories to equip state militias. Despite his previous lack of experience, Waters received a contract for five thousand muskets, with a 13 percent cash advance. The capital infusion enabled Waters to expand his factory in time to meet the incredible surge in demand as the regular army expanded during the war.
The war revealed problems with the overall quality of muskets and high barrel failure rates, leading to conflict between the government and its suppliers. Muskets had previously been checked only visually against “pattern muskets” by inconsistently trained inspectors. Due to the significant capital investment required on the part of the contractor, repeated rejections by government inspectors carried a real risk of bankruptcy. As these issues surfaced, the government pivoted to a system of gauges to provide an objective, if exacting, dimensional quality control standard.
In the face of the demanding standards of federal contracts, Waters began to invest in machine production. He turned his energies towards developing a system to weld and turn circular gun barrels, a process previously done entirely by hand using a revolving grinding stone. However, when the barrel became elliptical towards the butt of the piece, the machine struggled to produce a uniform thickness. Hearing local stories of Tom Blanchard’s mechanical abilities, Waters asked him to inspect the machine. Blanchard soon suggested a cam motion to alleviate the issue and enable welding of oblique cross sections.
Government inspectors assigned to the Waters Armory identified the potential of the emerging technology and sent word back to the United States Armory in nearby Springfield. Waters’s new contract for 10,000 additional muskets included a provision assigning the government rights to use the barrel-replicating machine. By 1818, Springfield Armory was employing it royalty-free in its production process. Blanchard quickly realized, possibly through conversations with local workmen, that the pattern-tracing concept could also be applied to gunstocks. Indeed, master craftsmen known as stockers were required to use hand tools to fit the metal parts to the wooden stock. This “cut and try” process needed to achieve the stock’s complex profile was tedious and limited throughput.
Blanchard’s invention automated this process by linking a cutting wheel with a friction wheel. When in operation, the friction wheel was placed against a rotating model stock. The pressure against the friction wheel as it traced the model stock was translated into movement by the cutting wheel. The result was a machine that was totally self-acting, other than requiring loading and unloading. Although other machines could duplicate cross-sections, the kinematics of Blanchard’s invention allowed it to reproduce models in three dimensions. It received a patent in September 1819. Although the tool is properly classified as a shaper, due to the use of a rotating wheel for the cutter, it became universally known as Blanchard’s copying lathe.
The superintendent of Springfield Armory, Roswell Lee, in collaboration with Harper’s Ferry Armory, experimented with prototypes of the lathe. These trials culminated in an offer to Blanchard to become an inside contractor at Springfield beginning in May 1823. Through this form of public-private partnership, Blanchard leased facilities and water power directly from the U.S. government while managing his own workforce. He was paid a fixed rate per musket, giving him a strong incentive to reduce his labor costs. In quick succession, he designed 14 total machines to automate tasks previously done exclusively by hand.
The shop at Springfield was an early instance of production automation, but it was not the first. As early as 1795, Oliver Evans of Delaware published plans for an automated flour mill integrating five devices for continuous processing. Blanchard himself was exposed to and readily credited Britain’s Portsmouth Block Mills for the general principle of single-purpose machines, arranged sequentially. Yet despite these early instances, the continuous production line was not yet widely adopted on either side of the Atlantic prior to its implementation at Springfield.
At the time, it was probably easy to underestimate the impact of Blanchard’s lathe since cost and schedule savings were achieved gradually and cumulatively, over successive generations. Although the ideal of complete interchangeability animated much of the initial investment and stringent government requirements, it proved an elusive goal, and handwork was usurped gradually by the lathe.
Overall, eight years after its introduction the machine yielded an impressive 55 percent improvement on the average number of stocks produced each month. Yet piece rates for stocking a musket actually rose after the introduction of the lathe due to tooling costs. It took thirty years and a second generation of design for the Armory to begin realizing a cost savings attributable to the Blanchard lathe.
Techniques developed at Springfield Armory enabled muskets with greater quality control and standardized parts while also providing a national capacity to rapidly scale production. The Armory itself grew into a central node in a technology cluster centered around the Connecticut River Valley. Similar to today’s Silicon Valley, this nineteenth-century “Gun Valley” was home to a lively engineering community of practice. The benefits of this geographic cluster were webs of practice skill and tacit process knowledge that enabled a highly collaborative and iterative approach. Mechanical experts and entrepreneurs apprenticed at Springfield Armory, learning techniques and building personal networks. One prominent example is Horace Smith, who would later go on to found Smith & Wesson.
At the outbreak of the American Civil War, the only other federal armory at Harper’s Ferry was destroyed. In response, Springfield Armory increased its output, reaching an annual production of 276,000 muskets in 1864 — an increase of twenty times its average yearly rate in the 1850s. Wartime surge production was achieved through great effort on many fronts, including workforce and machinery expansion. This rapid growth was possible because of the previous generations of investment in production technology like Blanchard’s lathe. Improved versions of the lathe were also used in later wars to turn stocks for Springfield Model 1861, U.S. Model 1903 Springfield, and the venerable M1 Garand.
The approach to mass replication of irregular shapes impacted civilian and military life. Axe and plough handles and wagon wheel spokes were some of the first products to benefit. Although developed originally for the production of shoulder arms, this general approach spread to the manufacture of clocks, sewing machines, and agricultural equipment. By the 1850s, shoe forms were able to be accurately replicated, making standard shoe sizes possible. Use of Blanchard’s lathe spread westward from Springfield, and overseas to Britain’s Enfield Arsenal.
As his machine became widely used, Blanchard encountered patent infringement, unlicensed production, and challenges to his claims of primacy. Using an array of tools such as reissue, extension, assignment, and license, Blanchard successfully utilized the patent system to grow wealthy from his inventions. He did not hesitate to lobby Congress, in one instance replicating busts of influential members on a turning machine to gain renewal of his patents.
The process of delineating the limits of intellectual property was inherently social and ongoing and required active management by the inventor. Established in Article I of the Constitution and the 1790 Patent Act, the American patent system was designed from the outset to incentivize innovation and broad access to intellectual property protection. By contrast, European patent systems charged high fees, while their bureaucracies were difficult to access by working-class inventors, such as Blanchard. As he moved between the public armory system and the free market, the licensing regime provided sufficient prospect of reward for him to continue creating and refining his ideas.
The defense industrial base rightly feels a deep sense of urgency to rapidly scale in the face of fierce peer competition. Yet, contemporary technologies such as additive manufacturing, robotic assembly, digital engineering, and distributed design-agnostic manufacturing are in their relative infancy. Policy tools which are suitable for optimizing mature industrial systems are not effective for incubating fundamentally new approaches. Cost savings may not materialize for decades and only after cycles of iterative improvements. Strategists should thus avoid the temptation to “eat the seed corn” and solely favor investment in technologies with direct, immediate applications.
Durable public institutions provide a repository of strategic patience which can be drawn upon in times of crisis, much as the Blanchard lathe later enabled dramatic expansion in production rates. The newly established Civil Reserve Manufacturing Network is a particularly promising framework. Government and industry leaders alike should drive action to qualify factories under the initiative. Through this sort of structured collaboration, the newest generation of friction points and copying lathes may be discovered.
Through renewed public interest in industrial policy and corresponding public investments, strong potential exists to catalyze a new American system of manufacturing. The experience of Thomas Blanchard can provide a proven foundation for policymakers to foster public-private collaboration. Springfield Armory’s role highlights the need to maintain the public production capacity of the contemporary Organic Industrial Base. Investments not just in weapon systems, but in production techniques themselves can have a profound impact on national security and prosperity. As Blanchard’s lathe demonstrates, these impacts may not be immediately obvious, predictable, or direct. They are, however, transformative to the American experience.
Aubry Eaton is an Air Force acquisition officer currently serving as the executive officer to the director of the Defense Contract Management Agency. He previously held roles as an intelligence analyst, program manager, and in-plant program integrator. His work has appeared in Joint Force Quarterly. The views expressed are his own and do not represent the Department of the Air Force or Department of Defense.
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Image: Jarek Tuszyński via Wikimedia Commons.
