US1932722A - Pyrotechinc product and method of making the same - Google Patents

Description

A. T. BERRY Get. 31, 1933 PYRO'I'ECHNIC PRODUCT AND METHOD OF MAKING THE SAME Filed June 9, 1932 fliizfiffl y @MM 7 W uct, characterized as hereinafter stated, and in Patented Oct. 31, 1933 stares METHOD OF 3 Claims. (01. 1102-30 This invention relates to a pyrotechnic product adapted to be applied to a fireplace fire, i. e. fuel burning in an open fireplace, and artificially color the fire.

The invention is embodied in an improved prodthe method of making the same, all as hereinafter described and claimed.

Of the accompanying drawing forming'a part of this specification,'-

Figure 1 shows in perspective an assembly of elements constituting my improved product, and a box in which said elements are loosely assembled.

1 Figure 2 shows an assembly of said elements united to each other to form a mass adapted to be consumed as a unit. 7

Figure 3 shows in perspective, and much enlarged, a portion of a shred of commercial exicelsior which may constitute the combustiblecore of an element of the product.

Figure 4 shows the element of Figure 3 incross section.

The same reference characters indicate the '1 same parts in all of the figures.

In carrying out my invention I assemble a multiplicity of combustible cores b, and a'semifluid adhesive paste, which includes a refractory comminuted ingredient, a glow-emitting flamecoloring ingredient adapted to color a fireplace fire, and an adhesive constituting a binding ingredient. I then agitate the assembly, preferably by placing it in a rotary cement mixer and tumbling until the paste is deposited in the form of coatings c on the cores. The coatings are then solidified by drying, preferably by spreading the coated cores on trays and subjecting the coatings to a drying temperature.

Each core and its coating constitutes an ele- 9; ment of the improved product.

are formed may be a mixture of ordinary com-' -mercial gelatine and water, or liquid or semiliquid glue,- or' a solution of gumarabic. adhesive may be otherwise constituted.

Said

The refractory comminuted or powdered ingredient may be magnesium silicate, (talc) or calcium sulphate, (native gypsum); orcalcium" Any other suitable comminuted macarbonate. terial or materials maybe employed;

The glow-emitting ingredient may include 'co'pper chloride and copper sulfate, with or without-'- the saltsof other'mineral-found'jin sea water, such as sodium, potassium and magnesiumyall preferably in powdered or comminuted form.

Any other suitable material or materials, either comminuted, or in solution, may be employed.

In making the paste the ingredients thereof are intimately mixed.

The refractory ingredient and the glow-emitting ingredient are held by the binding ingredient diffused through the coating. The refractory ingredient is not aifected by ordinary fireplace heat, and crumbles away while the glow-emitting ingredient, the core and the binding ingredient are being consumed.

When the. product is applied to an open fire, the refractoryingredient retards the combustion of the bindingingredient and the glow-emission by the coloring ingredient, and also retardsthe combustion of the core, so that the flame-coloring efiect is more protracted than would be the case if an uncoated combustible core were treated only with a coloring chemical, or if only a comminuted glow-emitting chemical were applied to the fire.

The elements of my. improved product may be assembled and adhesively united to eachother to form a mass as shown by Figure 2, the mass being of suitable size to bedeposited on'a relatively small area of a fireplace fire, and consumed as a unit, a protracted localized coloring being the result. 1

v Shredded wood, whose shreds constitute what is known as excelsior, is the best material of which I am aware for the elements hereinbefore called the cores.

My pyrotechnic product preferably includes an assemblage of elongated combustible shreds, these being flexible shreds of excelsior, each having the described coating 0. When the shreds are flexed by the action of heat, or otherwise, they cause rupture of the coatings c, the latter being frangible, whereby simultaneous combustion of \the shreds and of the combustible ingredients of the coatings c is permitted, so that during combustion color is emitted simultaneously from the internal and external surfaces of the coatings, the intensity of the emitted color being greater than SOT iii

would be the case if combustion occurred only on, and progressed only inwardly from the external surfaces of the coatings.

Another advantage of the elongated flexible shreds is found in the fact that when a multiplicity of uncoated shreds, and a suitable quantity of the described semi-fluid paste are assembled in a rotary cement mixer and1tumbIed-,;the paste forms the: coatings, c on. the shreds, ,andidetachr, ments of the coated shreds are automatically segregated and accumulated by the tumbling operation to form approximately globular masses? or balls, eachsuch as that shown by Figure 2, the number of such masses depending 'onthe' number of shreds tumbled. These masses'may'bw marketed enclosed in a box.

What is claimed is, r 1. A pyrotechnic product composed ofan'assemblage of elongated combustible shreds inde--- pendent of each other, each having a coating adhering,,thereto,-,- eachcoating; including a come bustible fiame-scolori-ng ingredient,=,a combustible binding ineredient, and a :comminuted refractory combustion-retandmg.- ;ingredient, ,the.- shreds. be-: ing fiexible and,- .-th,e;,--coating's- -fran .ble. .-so-;that-1 the coatings are erupturable-eby flexure; of the; shreds to permit.-.simu1taneouscombustion of they shreds .andeof thereombustiblaingreclientsz ofthe coatings, so ,that, during -combustion; color: is, emittedrsimultaneouslg ,f romtherinternal and exe ternah sunfaces ;-of..-the:co.atings.

are

2. As an article of manufacture, a pyrotechnic product composed of a multiplicity of elements, each including a combustible core and a coating covering and adhering to the core, said coating including a refractory comminuted ingredient, a glow-emitting flame-coloring ingredient, and an adhesive constituting a binding ingredient, said ingredients being intimately mixed, the refractory ingredientretardingthe combustion of the. hinder, the glow emission by the coloring ingredient, and the combustion of the core, when said prodnot is applied to a fireplace fire, so that the flame coloring effect is prolonged, said elements being assembled-toform a mass in which the elements adhere -to-each other, the, mass being of suitable sizettosbeedepositedon a fireplace fire, and consumed as a unit. I I

3." That improvement in the method of making a pyrotechnic product: which consists in assembling a multiplicity of elongated flexible combustible, sshreds and a; semi-fluid adhesive epaste sineluding; a combustible.1flameecoloringingredient;A.

a combustible binding; ingredientand-a:refractory' comminuted combustion-retarding ingredi'ent;;. tumbling the assembly until the paste.- forms coatings ontheshreds,anddetachmentsof the coated;

shreds? are :segrgegatedi; and; assembled to s; f ormz;

globular masses, and th ALTI-IEA: r: BERRXQ:

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