. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. The safety lock of Dr. Somerville is a truly humane invention. Its essential featureis a slide stop or catch, placed under the trigger a, fig. 401. It is pulled forward intoa notch in the trigger, by means of a spring b, upon the front of the guard, which is?worked by a key c, pressing upon the spring when the piece is discharged. In anothersafety plan there is a small moveable curved piece of iron, a, which rises through an openingB, in the lock-plate c, and prevents the cock from
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. The safety lock of Dr. Somerville is a truly humane invention. Its essential featureis a slide stop or catch, placed under the trigger a, fig. 401. It is pulled forward intoa notch in the trigger, by means of a spring b, upon the front of the guard, which is?worked by a key c, pressing upon the spring when the piece is discharged. In anothersafety plan there is a small moveable curved piece of iron, a, which rises through an openingB, in the lock-plate c, and prevents the cock from reaching the nipple, as represented inthe figure, until it is drawn back within the plate of the lock when the piece is fired. 401. To fire this gun, two diflferent points must be pressed at the same time. If byaccident the key which works the safety be touched, nothing happens, because the triggeris not drawn ; and the trigger touched alone can produce no effect, because it is pressure must be applied to the trigger and the key at the same instant, otherwisethe lock will not work. The French musket is longer than the British, in the proportion of 44*72 inches to 42;but the French bayonet is 15 inches, whereas the British is 17. FIRE ARMS. 481 Eng. Dimensions. - 0-676 - 1-0612-2559-00 Fr. Diameter of the bore Diameter of the ball . ^ Weight of the ball in oz. AVeight of the firelock and bayonet in lbs. Length of the barrel and bayonet -Within these few years a great many contrivances have been brought forward, andseveral have been patented for fire arms. The first I shall notice is that of CharlesRandom, Baron de Berenger. Fig. 402 shows the lock and b
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
