Several U. S. patents have been recently granted to James Weir Graydon for inventions which relate to the use of high explosives for war purposes. U. S. Patent No. 399882, March 19, 1889, is for "A Revolving Air-Gun" for throwing dynamite or other high explosive projectiles, the object of the invention being the production of a gun in which, by the simple turning of a crank, the projectiles may be automatically placed in the barrels, the barrels revolved, and the projectiles discharged under a predetermined regulated degree of air pressure.
U. S. Patent No. 399883, March 19, 1889, is for a "High Explosive Charge," which is to be made by soaking woolen or cotton cloth or like fabric in nitro-glycerine until saturated, and coating the whole with paraffined paper, which is cemented to the cloth, or with shellac or any coating which will prevent the exudation of the nitro-glycerine. The cloth may be in sheets or in ribbons, and the charges may be made up by rolling up the fabric into cylinders. When in ribbons, the charge may be made up by placing the tape-like disks on one another.