A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . .s Elliptic Rife.—So called, although the elliptical rifle is very old. Thebore in this rifle is slightly oblate ; the twist found by experience, to be most advantageousis one turn in 52 inches, the approved diameter of the bore 498 inches, the length of thebarrel being 32 inches. An eccentricity of 01 inch in half an inch is found sufficient tomake the bullet spin on its axis to the extreme verge of its flight. The length of the bulletfound to answer best with
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . .s Elliptic Rife.—So called, although the elliptical rifle is very old. Thebore in this rifle is slightly oblate ; the twist found by experience, to be most advantageousis one turn in 52 inches, the approved diameter of the bore 498 inches, the length of thebarrel being 32 inches. An eccentricity of 01 inch in half an inch is found sufficient tomake the bullet spin on its axis to the extreme verge of its flight. The length of the bulletfound to answer best with these rifles is 2^ diameters in length, with a windage of four orfive thousandths of an inch. Major JVuthaWs Rifie.—In the ordinary mode of grooving rifles, sharp angles are leftbetween the groove and land, (those parts of the smooth bore left in their original stateafter the process of grooving has been completed.) These create great friction with theprojectile, both in loading and discharging. Major Nuthall removes these objections byrounding off the lands into the grooves, that is, making them a series of convex and con-. 956 EIFLES. There are also General Boileaus rifle, and some others, wliich our space will not admi(of our noticing. Breicli-loading Jiijfes have been introduced, and they prove so satisfactory that the prin-ciple of breech-loading is applied to ordinary fowling pieces. Princes breech-loader has beenhighly recommended. In this rifle, Ji(/. 5JO, the barrel has attached to it a lever with a knob 596
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
