Method and apparatus for the manufacture of fusecord

F - Mech Eng,Light,Heat,Weapons – 42 – C

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F42C 1/00 (2006.01) C06C 5/08 (2006.01)

Patent

CA 1141208

- 17 - Abstract: Method and apparatus for the manufacture of fusecord A method and apparatus is provided for the manu- facture of dry spun explosive fusecord, the method comprising continuously advancing a carrier tape in a horizontal linear path, partially convoluting the tape to form a longitudinal open trough portion extending over a feed zone of said path, continuously feeding a stream of explosive material into the trough portion at a controlled rate appropriate to the formation of the desired explosive core, said stream being elongated and extending longitudinally over a portion of said feed zone, further convoluting the loaded tape to form a closed tube surrounding the explosive core and subsequently applying reinfor- cing materials around the closed tube. The carrier tape is preferably convoluted by carrying it through guides whilst the tape is supported on an auxiliary transport tape of stronger material. Helically spun layers of textile reinforcing material are advan- tageously applied from supply reels mounted in line co-axially with the path of the carrier tape, the fusecord passing through the centre of each textile supply reel. The method permits higher production rates and more uniform loading of the explosive core of the fusecord.

343933

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