US1473874A - Fuse for the production of heat - Google Patents

Description

Nom 113 H923.,

L. RISK FUSE FOR THE PRODUCTION OF HEAT Filed Sept. ll, 1922 lli atented Nov. 13, 1923..

lTED

LOREN RISK, OF MINNEAPOLIS, MINNESOTA.

FUSE ron THE 'ritonucrrom or HEAT.

Application med september 11, 1922. serial No. 587,640.

To aZZ whom t may concern:

of Minnesota, have invented certain new and useful Improvements inFuses for the Production of Heat, and I do hereby declare the following to be a full, clear, 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.

ly present invention provides an improved fuse adapted for the quick or almost instantaneous production of heat in devices such as tire-patch-applying devices, flat irons, branding irons, curling irons and the like. articularly, the fuse is designed for use in connection with tools for applying cement patches to the inner tubes of pneumatic tires and its more general utility will be obvious from its description in connection with the tool of the character disclosed and claimed in my pending application Serial Number 577.877, filed July 27, 1922.

'F or use in the particular tool above noted, the

varied, at will. The salient feature of novelty is found in the fact thatat least one of f the fuse plates or elements is corrugated. Fuses of this general character, as is well known, have within themselves the elements necessary to support combustion independently of air supply or, in other words, said fuses are slowly explosive or -almost instantaneously combus'ted, so lthat if the gases produced were confined, the-force of the explosion would be more or less destructive. The function ofthe corrugations in the fuse is to permit free escape of the gases from all points ofthe fuse, thereby permitting a complete and lalmost instantaneous combustion of the entire fuse without damage to tthe tool. The corrugated fuse may be constructed in various different ways and combined either with other corrugated fuse elements or with one or more immediately adjacent flat or uncorrugated fuses. Where two corrugated fuses or two fuse elements are placed together, the corrugatio'ns of the oner should be transversely ofthe corrugations of the other.

' In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

eferring lto the drawings:

fuses are made rectangular in contour,y but for other tools, the coutour might be ving the subject-matter of Fig. l is a perspective with. some parts broken away, showing the improved fuse applied wit'hin a tool ot the character disclosed and claimed in my co-pending application above identified;

Fig. 2 is an enlarged transverse section taken on the line 2-2 of Fig. 1 and showing also an'inner tube and a patch to which the tool is applied;

Fig. 8 is a perspective showing a corrugated fuse made up of two plates or elements, said elements being separated;

Fig. 4 is a section on the line -t-eof Fig. 3, showing the two corrugated fuse elements placed together; Fig. 5 is a perspective showing a fuse element corrugated on two faces;

Fig. 6 is a section on the line 6-.6 of Fig. 5, some parts being broken away;

ig. 7 is a section showing two corrugated fuse elements and one intervening flat or uncorrugated'fuse element;

Fig. 8 is a fragmentar section .showing a fuse element corrugatedY on both sides by pressing a normally fiat sheet into the form illustrated; and

Fig. 9 is a perspective showing a flat or uncorrugated fuse plate or element adapted or use with any one or more of the corrugated fuse elements.

The tool shown in Figs. 1 and 2, not bethe present application, may be briefly described as folows: f

The numeral 10 designates the body portion of the tool, the same being in the form of ceptacle or body 10 is provided with a suitable handle 12. rectangular cover 13, which, as shown, has upstandin flanges and is itself in the form of a pan, is inged to the body 10 by pintles 14 and raised, as shown by dotted lines in Fig. 1 to permit the placed on body 10 an as shown by full lines in Figs. 1 and 2.

The fuse shown in Figs. 3 and 4 comprises two fuse elements or plates that are corrugated on one side, as indicated at 16. These fuse elements may be used separately ortogether, but in Figs. 1 and 2, both of these elements are shown as placed in the tool with the corru ations 16 of the two elements at right angles to each other.

The fuse element 17 shown in Figs. 5 and 6 is-corrugated on both faces, as indicated at 18, and thevupper and lower corrugations are at right angles to each other. The fuse shown in Fig. 7 is made up of two fuse elements 15 and an intervening flat fuse element 19. In this arrangement, the corrugations 16 of the two fuse elements 15 are shown as in parallel arrangement, but with a flat intervening fuse plate, the corrugations of the two plates may be run at right angles.

he fuse shown in Fig. 8 is made of a single plate 20 that is normally fiat but is pressed to form corrugations on both sides. This fuse element 20 may be used alone or with any of the other fuse elements, but would generally be used in connection with a flat fuse element 19,- such as shown-in ll of the fuse elements described will be made of some suitable and absorbent material, such as straw board, paper board or other material that is more or less combustible and is porous enough to absorb the required amount of combustible material. As a combustible material for the fuse, I have generally employed potassium nitrate and potassium chlorate in solution or in an emulsion with water and in the approximate proportions of two pounds ofpotassium nitrate, two ounces of potassium chlorate and one gallon of water. The porous body of the fuse is then thoroughly saturated with this solution or emulsion and when the water or liquid substance has evaporated, the fuse will be ready for use and may be quickly and easily ignited by the llamefrom a match or the like.

It will, of course, be understood that the number of fuse elements in the combination 'or arrangement of the fuse elements such as illustrated or other design on the plan illustrated, would depend largely on the amount of heat that is to be produced for anyparticular kind of work. By the use of these fusesf the heating device may be brought to the desired high temperature almost instantly, and it will remain hot for a considerable time, as not only are the iron elements of the heater brought to the desired high temperature, but .the unconsurned bod portion of the fuse will, after the slow exp osion, remain as a red hot element that gradually cools and, hence, holds a considerable amount of stored-up heat units.

It is highly important to note that at least i one of the fuse elements or plates is corrugated and that its corrugated surface is placed in contact with one or the other combustible fuse elements. This is important because in such an arrangement, the contacting surfaces of the two fuse elements are capable of simultaneous combustion, which will take place in the channels afforded by the corrugated surface of the corrugated plate. This simultaneous or double combustion produces lthe most intense heat, because the combustion will be complete both above and below all of the approximately horizontal air passages.

The tool .or heating device may be used in a good many different ways and, as indicated, for different purposes, but the preferred manner'of using the tool in applying patches to pneumatic inner tubes is clearly set forth in my said prior application.

lVhat I claim is:

1. A fuse of the character disclosed comprising several plate-like fuse elements, at least one of which has a corrugated surface placed in contact with the opposing surfaces of the adjacent combustible plate-like fuse element.

2. A fuse of the character disclosed comprising several plate-like fuse elements, at least one of whichhas a iiat surface and at least one of which has a corrugated surface, the fiat and corrugated portions of said fuse elements being in contact and capable of simultaneous combustion whereby intense heat will be produced.

In testimony whereof I affix my signature. LOREN RISK.

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