Explosives . rms it is made in the form of flakes,for artillery in long tubes, but they have also experimented with powderin strip In 1887, a few years after the invention of Poudre B, Alfred Nobel invented smokeless powder in which the fibrous structure of the nitro-cotton wrasdestroyed not by the use of a volatile solvent, but by dissolving it in anotherexplosive, nitro-glycerine. This substance, to which he gave the nameballistite, is indeed blasting gelatine with the proportion of nitro-celluloselargely At first benzene was added to facilitate the solution,
Explosives . rms it is made in the form of flakes,for artillery in long tubes, but they have also experimented with powderin strip In 1887, a few years after the invention of Poudre B, Alfred Nobel invented smokeless powder in which the fibrous structure of the nitro-cotton wrasdestroyed not by the use of a volatile solvent, but by dissolving it in anotherexplosive, nitro-glycerine. This substance, to which he gave the nameballistite, is indeed blasting gelatine with the proportion of nitro-celluloselargely At first benzene was added to facilitate the solution, 1 , 1911, p. 136. 2 , 1911, p. 1!»7. 3 Schuhmacher, , 1907, p. 82. 4 Buisson, Probleme des Poudres, p. 50. 5 See , 1908, pp. 154, 248, 283; 1910, pp. 161, 188, 416; 1912, p. 479; fromMemorial de Artilleria, Feb. and Apr. 1908 ; July, Sept., Oct., Nov., 1909; July 1912,Buisson, Probleme des Poudres, p. 67. 6 Fr. Pats. 185,179 of 1887, and 199,091 of 1889, and Eng. Pat. 1471 of 1888. EXPLOSIVES. Fig. 60. American Rifle Powder(Thorner. >.>.. 1907, p. L2 and was afterwards evaporated tf. A better method of incorporation wasdiscovered by Lundholm and Sayers l, who place the solublenitro-cotton andnitro-glycerine in hot water and stir it by means of compressed air. Underthese conditions the nitro-cotton gradually dissolves in the nitro-glycerine, orperhaps it would be more correct to Bay that the nitro-glycerine dissolves inthe nitro-cotton. The dough thus produced is then passed between rollsheated to 50 or 60 <.. whereby the water i- pressed out, and the explosiveis made into a sheet. This is folded overand passed through the rolls again, andthe operation is repeated until thematerial ha- been converted into a uni-form colloid. It i- then cut into squaretlako. generally coated with graphite,and rinally it is blended. Various addi-tions have been made at different timesto make the powder more stable or toimprove its physical properties. Thefirst English pat
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