Explosives . Pn • - far Alcoholized Nitro-cellulose SLOW-BURNING SMOKELESS POWDERS 293 is constructed on the same principles as the kneading machines used in bakeries(sec Pigs. 56, 57). It consists of a trough, in which two curved blades rotatein opposite directions, one twice as fast as the other, Loth going Hownwardsin the centre of the trough and upwards by the walls. First, some of thesolvent is poured in to moisten the axles and blades, then the nitrocelluloseand ..thci materials, and finally more solvent. The incorporator is thenstarted and kept running for some hours until the constitue
Explosives . Pn • - far Alcoholized Nitro-cellulose SLOW-BURNING SMOKELESS POWDERS 293 is constructed on the same principles as the kneading machines used in bakeries(sec Pigs. 56, 57). It consists of a trough, in which two curved blades rotatein opposite directions, one twice as fast as the other, Loth going Hownwardsin the centre of the trough and upwards by the walls. First, some of thesolvent is poured in to moisten the axles and blades, then the nitrocelluloseand ..thci materials, and finally more solvent. The incorporator is thenstarted and kept running for some hours until the constituents of the powder. Fir: 56. Incorporating Machine in Working Position(Werner. Pfleiderer and Perkins, Ltd.) are thoroughly mixed, the trough meantime being kept covered to preventloss of solvent. The trough is then tilted up and the blades are made torotate in the opposite direction. The dough falls into a box or other receptacle,and is taken to the buildings where it is pressed into cords, tubes or strip,or is rolled into -licet, according to the form that it is required to give tothe finished powder. If the incorporator he driven by an electric motor, this should be placedso that vapour f the solvent cannot possibly be ignited by spark- of thecommutator. The motor should be provided with an automatic release toprevent danger of the explosive being fired by the application of too muchpower. The lid of the incorporator i- best made of aluminium, domed some-what so as to allow of more material being placed in the machine. The EXPLOSIVES aluminium may be surrounded by a wooden frame held down to t
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Keywords: ., bookcentury1900, bookdecade1910, bookidexp, booksubjectexplosives
