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Eli Terry was using interchangeable parts using a milling machine as early as 1800. Ward Francillon, a horologist, concluded in a study that Terry had already accomplished interchangeable parts as early as 1800. The study examined several of Terry's clocks produced between 1800–1807. The parts were labelled and interchanged as needed.
Eli Whitney has often been incorrectly credited with inventing the idea of interchangeable parts, which he championed for years as a maker of muskets; however, the idea predated Whitney, and Whitney's role in it was one of promotion and popularizing, not invention. [14]
Blanc, and the interchangeable musket parts experiment, is highlighted in a multi-page footnote in Mémoire sur la fabrication des armes portatives de guerre by Gaspard Hermann Cotty (1806). [5] There were "50 or 60" rifles and LeBlanc first developed the technique in 1777, demonstrating it just before the French Revolution.
The museum's main building is located on a portion of the Eli Whitney Gun Factory site, a gun factory erected by Eli Whitney in 1798. The museum focuses on teaching experiments that are the roots of design and invention, featuring hands-on building projects and exhibits on Whitney and A. C. Gilbert .
In the case of each function, the system of interchangeable parts typically involved substituting specialized machinery to replace hand tools. Interchangeability of parts was finally achieved by combining a number of innovations and improvements in machining operations and machine tools, which were developed primarily for making textile machinery.
While Whitney did not realize financial success from his invention, he moved on to manufacturing rifles and other armaments under a government contract that could be made with "expedition, uniformity, and exactness"—the foundational ideas for interchangeable parts. [22] However, Whitney's vision of interchangeable parts would not be achieved ...
Eli Whitney and Simeon North proved the feasibility of the notion of interchangeable parts in the manufacture of muskets and pistols for the US Government. Under this system, individual parts were mass-produced to tolerances to enable their use in any finished product.
Eli Whitney perfected a system of producing muskets with interchangeable parts. Prior to Whitney's invention, most muskets—and all other goods—had been handmade with parts specially designed for each particular musket. The trigger of one musket, for example, could not be used to replace a broken trigger on another musket.