. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. ade of stub iron, that is, of oldhorse-shoe nails welded together, and forged into thin bars, or rather narrow one time damascus barrels were much in vogue; they were fashioned either as abovedescribed, from plates made of bars of iron and steel laid parallel, and welded together,or from ribands of the same damascus stuff coiled into a cylinder at a red heat, and thenwelded together at the seams. The best modern barrels for fowling pieces are con-structed of stub-nail iro
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. ade of stub iron, that is, of oldhorse-shoe nails welded together, and forged into thin bars, or rather narrow one time damascus barrels were much in vogue; they were fashioned either as abovedescribed, from plates made of bars of iron and steel laid parallel, and welded together,or from ribands of the same damascus stuff coiled into a cylinder at a red heat, and thenwelded together at the seams. The best modern barrels for fowling pieces are con-structed of stub-nail iron in this manner. The slip or fillet is only half an inch broad,or sometimes less, and is left thicker at the end which is to form the breech, and thinnerat the end which is to form the muzzle, than in the intermediate portion. This filletbeing moderately heated to increase its pliancy, is then lapped round the mandril in aspiral direction till a proper length of cylinder is formed; the edges being made tooverlap a little in order to give them a better hold in the welding process. The coil 478 FIRE ARMS. (^. being taken off the mandril and again heated, is struck down vertically with its muzzleend upon the anvil, whereby the spiral junctions are made closer and more uniform. Itis now welded at several successive heats, hammered by horizontal strokes, called jump-ing, and brought into proper shape on the mandril. The finer barrels are made of stillnarrower stub-iron slips, whence they get the name of wire twist. On the Continent,barrels are made of steel wire, welded together lengthwise, then coiled spirally into acylinder. Barrels that are to be rifled require to be made of thicker iron, and that ofthe very best quality, for they would be spoiled by the least portion of scale upon theirinside. Soldiers muskets are thickened a little at the muzzle, to give a stout holding tothe bayonet. The barrels thus made are annealed with a gentle heat in a proper furnace, andslowly cooled.
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
