US 1762911 A
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June 10, 1930. c s 1,762,911
SEALING COMPOUND FOR PYROTECHNIC DEVICES Filed Feb. 2, 1926 Swarm 95% w w Z'Md Z Patented June 10, 1930 UNITED STATES PATENT OFFICE HERBERT CLAUSER, OF ELKTON, MARYLAND, ASSIGNOR TO VICTORY SPARKLER & SPECIALTY COMPANY, OF ELKTON, MARYLAND, A CORPORATION OF DELAWARE SEALING COMPOUND FOR PYROTECHNIC DEVICES Application filed February 2, 1926. Serial No. 85,592.
This invention relates to pyrotechnic devices or fireworks and consists in a novel composition for sealing the same to confine the gas generated by explosion or combustion.
I have chosen, as an example of the use of my improved sealing material, the firework known as a toy torpedo or tube torpedo, and have shown such a device in the drawingyin which:
Fig. 1 is an elevation of a tubular toy torpedo;
Fig. 2 is a central vertical section of the same; and
Fig. 3 is a plan View thereof.
In these views, A is the container or tube, of paper, cardboard, or the like; B is a cup of the same material inserted in the lower end of the tube; D is the explosive composition placed in and on said cup; E is the gravel or other detonating medium; C is a disk of cardboard fitt d in the tube on top of the charge, and 1", F epresents tln: sealing material in the extreme en s of the. tube.
Many materials and compositions have. been tried and used for sealing fireworks of this type, but none of them, as far as I am aware, has proved entirely satisfactory, either from the standpoint of its mannfacture or of its behavior under varying climatic conditions.
My improved composition obviates all the defects heretofore existent in the materials used for the purpose in quail W1. For instance, it does not require an excessive time for drying; it does not crack after being dried: it does not expand or contract in unequal relation to the other parts of the device; it does not shatter upon the impact necessary to explode the torpedo, before the explosion takes place, and, when shattered,
the flying pieces cannot do any harm or injure anyone. Further, it is waterproof and fireproof.
The preferred composition of my improved sealing material is as follows: silicate of soda lbs.; kaolin 40 lbs; zinc oxide 9.5 lbs.; and coloring material 0.5 lbs. The latter may be ultramarine blue, Vermilion red, or the like, and may, of course, be
sets very quickly, thus facilitating its transport from one department of the factory to another, and finally set-s more quickly than the compositions heretofore used.
The above proportions of the ingredients have proved very satisfactory, but I do not Wish to limit myself to them.
Having thus described my invention, what I claim to be new and desire to secure by Letters Patent is:
1. A material for sealing fireworks comprising a mixture of substantially 50% of silicate of soda, substantially 10% of a metullic oxide and substantially 40% of silicate of alumina.
2. material for sealing fireworks comprising a mixtu e of substantially 5095' of sili ate of soda, substantially 10% of zinc oxide and substantially 40% of kaolin.
In testimony whereof I hereunto aflix my signature.