To safely and easily manufacture a signal shell flaming or fuming for a long time by equipping it with molding powder or an inner shell or art outer shell, and inserting the plural molding powder or the inner shell into the outer shell.
A desired signal shell is constituted by charging itself with fuming or flaming powder 2 from the top of an inner shell 1, and attaching a perforated plug 5, fire conductive powder 3, and ignition powder 4 to itself after charge. At this time, it will do to manufacture the signal shell by inserting at least two or more pieces of molding powder or inner shells 1 which are charged with fuming or flaming powder 2, or it will do to constitute the signal shell by inserting the inner shells and powder for combustion propagation alternately into the outer shell. An oxygen supply agent is made by putting, for example, 30% of potassium perchlorate, 15% of ammonium perchlorate, 10% of strontium carbonate, and 20% of lead monoxide in a mold after mixing 15% of sulfur as a combustible agent and 10% of celluloid acetone solution as a coupling agent, and molding and drying them.
FUJII AKIHIKO
FUKUDA MITSUTOSHI
