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Springfield Armory NHS, US NPS | Improved and innovative methods of manufacture were constantly sought at Springfield Armory. This period model of a barrel rolling machine combines several steps in making a barrel. Note the enlarged indentation in the grooves which permitted shaping the squared breech while rolling the round barrel. |
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Model of barrel rolling machine SPAR711
In 1810 the only tasks performed by machine on the other parts of the musket were hollow milling of tumblers and slitting screws. By 1825 this list had expanded, to include:
Cutting the bands and side plate
Drawing the ramrod
Welding the bands
Boring the bayonet socket and the pan
Turning the bayonet socket and the head of the side screw
Milling the breech plug, bayonet socket, guard bow, band spring, side screw, tang screw, butt plate screw, guard screw, tumbler, bridle, cock pin, and lock screws
Slitting the side screw, tang screw, butt plate screw, lock screws, guard screw, cock pin
Threading the cock pin
Drilling the barrel vent, bands, guard plate & bow, lock plate, frizzen, cock, tumbler, bridle, sear, upper jaw, cock pin, main spring, frizzen spring, and sear spring
Punching the side plate, butt plate, and the square hole in the cock
Countersinking the guard plate and butt plate
Grinding the bayonet, ramrod, bands, guard, side plate, butt plate, and lock plate
Polishing the bayonet, ramrod, bands, swivel, guard, lock plate, trigger, side plate, band spring, butt plate
Turning, boring, inletting (the lock), fitting bands, fitting butt plate of the stock.
Extracted from: FORGE OF INNOVATION: An Industrial History of The Springfield Armory, 1794-1968, Michael S. Raber, Patrick M. Malone, Robert B. Gordon, Carolyn C. Cooper (Raber Associates, South Glastonbury, CT 06073), edited by Richard Colton, 2008, Ch. 7, p. 214.
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