US2130068A - Fireworks - Google Patents

Description

Patented Sept. 13, 1938 Alberto Cimorosi, Elkton, Md.

, Application May 25, 1937, Serial No. 144,596

5 Claims.

This invention has to do with pyrotechnical devices, and is concerned primarily with a fireworks article which when ignited projects a jet of fiame which preferably has sparks intermingled therewith.

The type of fireworks article with which this invention is primarily concerned-has now assumed a recognizable position in the fireworks field, and may be characterized as including a casing of sufiicient strength to withstand the combustion of the fireworks materials therewithin without rupturing, the casing being formed with a vent through which the jet of flame or smoke,

as the case may be, passes. This casing is generally of a cylindrical formation, so that the reactive forces of combustion which create the jet passing through the vent will cause the fireworks to right itself, and project the jet in a substantially vertically upward direction. Snugly received within the casing is a cartridge containing the fireworks composition which provides the desired display effects. Such a composition generally includes an oxidizing agent for supporting combustion, and also preferably contains materials for producing sparks or flames of any desired color or color combinations.

A typical composition comprises a granular mixture of charcoal, saltpeter, and sulphur, together with aluminum magnesia powder or powders for producing the color effects. A fireworks article of this type is .clearly illustrated and described in the patent to Cimorosi, Number 2,058,567, dated October 27, 1936.

Heretofore the fireworks composition included in the casing has been available only in powdered form, and in view of this condition it has been necessary to avail of a cartridge for containing.

the composition. However, certain developments in the manufacture ofthe fireworks composition itself have rendered this material available in stick form, and the present invention contemplates taking advantage of this condition by providing a fireworks article of the character above described, in which the cartridge is eliminated; the casing being applied directly about the stick of combustible composition.

With the foregoing in mind this invention has in view as an important objective the provision ofa fireworks article of the character described which comprises a combustible fireworks composition in solid form, and about whichis applied a casing capable of withstanding combustion of the composition without rupturing.

In carrying out this idea in a practical embodi- V ment the fireworks composition is in a so-called stick or cylindrical formation having substantially fiat ends, thus shape to the finished imparting a corresponding fireworks article. The casing which is applied about the stick composition is a conglomerate well known to those skilled in this art; being generally made from a mixture 7 of glue, sawdust, and of being applied to confetti, and in the course the stick this composition assumes a shape corresponding to that of the stick.

Another somewhat more detailed object of the A fireworks article of the type above noted is also peculiarly adapted for use as a sky rocket, in which case the vent is so positioned as to cause the jet of combustion emitting therefrom to urge the device upwardly. Accordingly this invention has in view as a further objective the provision of a fireworks article. of the character described, in which means are attached to the casing for maintaining the article in a desired position, and the casing is formed with a vent suitably disposed to utilize the force of the jet emitting therefrom to project the device up- Wardly.

Various other more detailed objects and advantages, will in part become apparent, and in part be hereinafter stated, as the description of the invention proceeds.

The invention, therefore, comprises a fireworks article consisting of solid stick form, and

a fireworks composition in about 'which is applied the casing capable of withstanding combustion of the composition without rupturing. This casing is formed with a vent through which a jet of flame or smoke caused by the combustion is adapted to pass, and a fuse is positioned in thls vent.

Ina

somewhat modified form of the invention the vent is disposed at one end of the casing, and means is associated with the-casing for maintaining the same in such position that the force of the jet emitted through the vent will project the device into the air.

-For a full and mo re complete understanding of the invention reference may be had to the following description and accompanying drawing,

. wherein Figure 1 is a view inside elevation of a stick of fireworks composition employed in making an article in accordance invention,

with the precepts of this Figure 2 is an end view taken at right angles to the showing of Figure 1,

. Figure 3 is a showing partly in section and partly in elevation, showing the casing as applied to the stick of Figure 1,

Figure 4 is a transverse section taken at right angles to the showing of Figure 3,

Figure 5 is a view similar to Figure 3, showing the casing formed with the vent and the fuse extending thereinto,

Figure 6 is a sectional view takenat right angles to the showing of Figure 5, I

Figure 7 is a side elevational showing of the completed fireworks article, while Figure 8 is a view similar to Figure '7, taken at right angles thereto, and

Figure 9 is an elevatlonal showing of a modified form of the invention.

Referring now to the drawing, wherein like reference characters denote corresponding parts, a stick of a fireworks composition is referred to generally at it, and is shown as being of a stick form defined by the cylindrical surface l2 and flat ends ii. The composition of this stick it may, of course, vary, depending upon the particular display effects to be afforded. However, it will usually include an oxidizing agent for supporting combustion within the casing to be later applied thereabout.

.duced, calcium will result in red, strontium to produce crimson, barium to produce green, potassium to produce violet, and copper to produce blue or red.

Obviously other wellknown pyrotechnic materials may be used to provide the desired display effects. If desired, the stick 16 may also include smoke producing material either alone or in combination with the spark or color producing material.

Referring now more particularly'to Figures 3 and 4, a casing I3 is shown as applied about the stick ID. This casing 83 is a conglomerate wellknown to those skilled in the manufacture of pyrotechnics. Such a conglomerate generally is made from a glue with which is united wood flour, granular material, sawdust and confetti or aluminum flakes or fiitter, the latter affording a pleasing appearance in the finished article.

I to:

The conglomerate constituting the casing 18 As his tumbler is agitated or rotated the sawdust citgranular material is sprinkled over the sticks having the glue applied thereto, and the casings i3 are thus gradually built up.

This casing I3 is illustrated as having end walls It the inner surfaces of which correspond to the flat end walls H of the stick l0, while the outer surfaces of the end walls It are curved to impart a generally rounded appearance to the finished article. The casing l3 also includes the cylindrical wall lfiflcorresponding to the cylindrical wall l2 of the stick it. As shown in Figures 5 and 6,- the cylindrical wall 15 is formed with a vent l6 through which extends a fuse n.

The sticks I0 may be made from any of the well-known pyrotechnic materials, but itis.im portant to note that combustion in these sticks will not be caused by shocks or jars, but only by ignition from the fuse fll. when the fuse I! is ignited it burns down, and the stick m is finally ignited. As combustion of the stick it takes place a jet of either smoke or flame, or a mixture of the twp, depending on the particular materials employed in the composition of the stick it, will pass through the vent ll, and the reactionary forces of the jet will cause the casing lt-to assume a position in which the jet is projected substantially vertically upwardly; the casing readily assuming this position due to its cylindrical formation.

A fireworks article of the same general type hereinbefore described is adapted for use as a sky rocket. In this form of the invention the fuse I'l will be connected to one end wall iii of the casing, as shown at it, while a supporting stick it is secured to the cylindrical wall IE as by being glued thereto, this being represented at M.

As the materials within the casing i3 burn, and the Jet emitted through the opening it disposed in .the end wall It, the forces of this jet will project the casing upwardly in a well-known manner.

While preferred specific embodiments of the invention are herelnbefore set forth, it is to be clearly understood that I am not to be limited to the exact constructions illustrated and described, because various modifications of these details may be provided in putting the invention into practice within the purview of the appended claims.

I claim: I

1. A fireworks article of the character described comprising a cylindrical casing, a combustible non-detonating display composition in solid stick form snugly received within said cylindrical casing, said casing being formed with a vent in its cylindrical wall, and a fuse positioned in said vent.

2. A fireworks article of the character described comprising a solid stick of a combustible nondetonating display fireworks composition, a casing applied about said stick and generally conforming in shape to the shape of said stick, said casing having a cylindrical wall formed with a .vent, and a fuse in said vent.

3. A fireworks article of the character described comprising a solid stick of combustible nondetonatlng display fireworks composition, 9. casing applied about said stick and generally conforming in shape to the shape of said stick, said casing consisting of a conglomerate of glue and sawdust and having a cylindrical wall formed with a vent, and a fuse positioned in said vent.

4. A fireworks article of the character described comprising a solid stick of a combustible nondetonating display fireworks composition, a continuous casing applied about said stick and having end walls connected by a cylindrical wall, said cylindrical and end walls being integral one of said end walls being formed with a vent, a fuse in said vent, and a supporting member having one ALBERTO CIMOROSI.

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