Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 407
PUTTING THE JACKET ON THE TUBE OF A BIG GUN. than the steel of the gun, enters into the grooves,is turned by them, and gives the projectile aspinning motion during its flight. 922 THE GUN-FOUNDRY AT WASHINGTON. [Sept. … THE GUN-CARRIAGE SHOP. A BIG GUN MOUNTED. While the gun was being made and rifled,another large block of steel has been made intowhat is called a breech-plug. This plug isnow attached to the rear of the gun, and ismade so as to screw into the gun and close thebreech, or to screw out and swing back,…
Children's literature
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