US1422698A - Kindling device - Google Patents

Description

H. GROSSMANN.

KINDLING DEVICE.

APPUCATION FILED JUNE 27, I92].

. 7-.'- v HANS GROSSHANN, OF ZURICH, SWITZERLAND.

KINDLIZJG DEVICE.

Specification of Letters Patent. Patented July llll, 1922.

Application filed June 27, 1921. Serial No. 480,831.

. ments in Kindling Devices; and I do hereby declare the' following to be a clear, full, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

. The present invention relates to a kindling device which is adapted to be a substitute for matches, and which consists of a pellet having an interior combustion body, the socalled core, and of the kindling or priming material, which is disposed on the surface of the combustion body and acts as external wrapper. Such kindling devices are already known but they exhibit the defects that no guarantee for quiet burning can be given and that bursting of the outer cover may occur and the whole kindling device fly to pieces. This disadvantage is removed by the present invention, wherein the inner combustion body consists of a mixture of combustible or of a mixture of combustible and incombustible materials while the kindling material completely encloses the combustible core. Such a fabrication of the combustible core from a mixture possesses the following advantages:

(1) A flameis produced that burns quite quietly;

(2) The core resulting from such a mixture possesses a certain resiliency which permits it to compensate in itself for expan sions arising from the heating, so that no bursting of the outer covering can occur;

(3) The mixture lastly allows the burning period of the core to be regulated in a simple way, this being also of importance for the manufacture when the volume remains the same because even for different durations of burning the same machines may be employed.

Figure 1 is a cross section of a spherical pellet having a form retaining core and an igniting coating;

Figure 2 is a like section in which the ignition material is embodied in the pellet.

The igniter may also be constructed in such a way that the kindling material 3 is distributed not only on the surface of the core 2, Fig. 1, but also in the interior of the device so that the combustible body and the kindling material form a mixture which constitutes a homogeneous body. -The combustible body, which presents the flameproducing part, is in any known way kindled by friction from the ignition part, which provides the spark.

In shape, the kindling pellet may be spherical, or may have a form resembling that of a sphere, but it may also be oval, oblate, cube-shaped, cylindrical or leafshaped. The shape will be determined mainly,

by the facility of mechanical manufacture.

In the preparation of the core any combustible material may be made use of provided the kindling material which encloses the device on all s1des be of such dimensions as to suffice for the kindling of the combustible core. Besides solid fuels, use may also be made of liquid or gaseous fuels, or

of materials which melt at elevated temperatures. Solid materials and those which remain sol1d at elevated temperatures may be directly employed. Liquid materials or such as melt when the temperature rises may conveniently be made useof in conjunction with such solid substances as do not melt at high temperatures, or mixed with incombustible substances, such admixture preventing the liquid or themelting mass from spreading out and at the same time enabling it to be coated with the kindling material. By the aid of such an arrangement a whole series of fuels may be made-use of which could otherwise never be employed for ignition purposes.

In the process of manufacture, a definite quantity of kindling material may be soaked or mixed with combustible material, though care has to be taken, that the facility for kindling of the ignition material is not im-- a paired, whereafter the mixture may be reduced to any form suitable for kindling. Or the combustible material may be shaped into little balls, cubes, cylinders or flat sheets, these being subsequently coated with kindling material.

The first group of combustible materials to be considered are those solid fuels which instance as wood, paper, coal, peat, celluloid, camphor and the like. The second group to be considered includes such solid fuels as melt when their temperature is raised, such as parafiin, naphthalene, resins, fats, waxes and the like. The third group to be considered contains the liquid fuels, such for example as the liquid derivatives -do not melt when being burned, such for Q I A 1,422,698

of the mineral oils, the liquid products of of preventing the scattering of the liquid the uniform and complete coating of the substance or have mainly an absorbtiveaction, such as silicious marl, pumice-stone, clay powder, talc, etc. and maintain the form of the pellet after it has burnt out.

Practically every incombustible substance may be employed. To prevent the scattering, also, combustible solid materials may be made use of, provided they themselves remain solid at high temperatures and thereby serve the same purpose as the incombustible admixture for instance, wood, peat, paper, coal, celluloid, camphor, etc. Thus, according to the foregoing the combustible substance that forms the core and produces flame may consist of a simple fuel, or of a mixture of fuels, or of a fuel either'simple or composite, and a neutral substance intended for a definite purpose. The proportions to be observed in mixing are optional and may vary within very wide limits. By the operation of admixing the scattering of a melting or naturally liquid ingredient may be prevented, and by making an appropriate choice of substance mixed, a definite duration of burning may be obtained, a feature of great importance in the specifyingof particular ignitions. By varying the mixing ingredients the duration of burning of a given volume in the case of a particular fuel may be determined at will.

The coating of the core with kindling material offers no technical difficulty. As distinguished from the common match, where the provision of the kindling substance at a definite place oflers mechanical difiiculties,

combustible body may be carried out with great simplicity, both from a mechanical and from a chemical point of view".

A great number of the kindling devices according to this invention may be accommodated within a very small space, and certainly considerably more than the quantity of'matches that can be stored in the same space.

When employing the igniter according to the invention, a suitable holder should be made use of, which may be employed for an unlimited succession of kindling operations.

I claim 1. A match substitute, comprising a pellet having a core and an ignition coating, said core comprising a mixture of a combustible substance and a porous substance capable of leaving a form retaining skeleton after burning.

2. A match substitute, comprising a pellet having a core and an ignition coating, said core comprising a mixture of a combustible substance and a porous non-combustible substance capable of leaving a form retaining skeleton after burning.

3. In a match substitute, a pellet comprising a porous pellet-form retaining substance, a combustible and an ignition material.

4. A match substitute comprising a pellet of a porous form-retaining substance, a melta mixture of an elastic pellet-form-retaining substance, a malleable combustible and an ignition substance, the whole coated with an igniting material.

In testimony that I claim the foregoing as my invention, I have signed my name.

DR. HANS GROSSMANN.

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