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Diagram of a Springfield Model 1855 Musket's lock mechanism. The small plate with the eagle on it is the cover for the Maynard tape system. Maynard's new system still required the musket's powder and Minié ball to be loaded conventionally into the barrel, but the tape system meant that the percussion cap no longer needed to be manually loaded onto the percussion lock's nipple.
Larger machines used an assortment of tapers—earlier mills will most likely have either some size of Brown & Sharpe taper or Van Norman's "No. 2" taper. Later mills usually have NMTB milling machine tapers (30, 40, or 50, depending on machine size). It is probable that any machine could be ordered new with any taper the buyer desired.
The Springfield Model 1855 was a rifled musket widely used in the American Civil War. It exploited the advantages of the new conical Minié ball , which could be deadly at over 1,000 yards (910 m). It was a standard infantry weapon for Union and Confederates alike, until the Springfield Model 1861 supplanted it, obviating the use of the ...
The Jacobs Taper (abbreviated JT) is commonly used to secure drill press chucks to an arbor. The taper angles are not consistent varying from 1.41° per side for No. 0 (and the obscure # 2 + 1 ⁄ 2) to 2.33° per side for No. 2 (and No. 2 short). There are also several sizes between No. 2 and No. 3: No. 2 short, No. 6 and No. 33.
Springfield Model 1863 rifled musket and Enfield Pattern 1861 musketoon Springfield and Enfield lockplates. The Springfield Model 1863 was a .58 caliber rifled musket manufactured by the Springfield Armory and independent contractors between 1863 and 1865. The Model 1863 was only a minor improvement over the Springfield Model 1861. As such, it ...
The Model 1816 had a 42-inch (107 cm) long .69 caliber smoothbore barrel, similar to the Model 1812, but had a longer lock plate, a shorter trigger guard, and a longer bayonet than the Model 1812. The Model 1816 also had a more straight lined stock. The overall length of the weapon was 58 inches (147 cm). [3]