US2384438A

US2384438A - Igniter device

Info

Publication number: US2384438A
Authority: US
Publication date: 1945-09-11
Anticipated expiration: 1962-09-11

Description

Sept. 11, 1945.

P. 1.. BUC Y IGNITER DEVICE Filed Sept. 20, 1943 Ww Z 3L L R M Patented Sept. 11, 1945 UNITED STATES PATENT OFFICE 2,384,438 r v IGNITER DEVICE Perl Lewis Buoy, Oklahoma City, Okla. Application September 20, 1943, SerialNo. 503,109

Claims. (Cl. 123-469) This invention relates generally to the class of ignition devices and pertains particularly to an improved igniter designed for use in connection with internal combustion engines.

An object of the present invention is to provide an improved igniter having associated therewith means for introducing oxygen into the area within the igniter where the igniting spark is formed, whereby to produce a hotter flame and effect the complete oxidation of the fuel and the elimination of carbon deposits from the sparking or igniting chamber and the engine cylinder.

Another object of the invention is to provide an internal combustion engine sparking device of novel construction which is so designed that upon ignition of the charge the burning gases will be forced into the engine cylinder in the form of a flame jet so that the flame will be evenly distributed over the interior of the piston cylinder to effect a smooth even and complete combustion of the fuel.

Another object of the invention is to provide an igniter which is formed in such manner as to provide a relatively heavy or thick body of metal around the sparking chamber, which after being heated by the initial explosion of the fuel mixture, holds its heat so as to raise the temperature of the introduced oxygen and thereby bring about the more ready ignition of subsequent fuel charges.

The invention will be best understood from a consideration of the following detailed description taken in' connection with the accompanying drawing, it being understood, however, that minor changes may be made in the details of construction. so long as such changes do not depart from the spirit of the invention as expressed in the appended claims.

In the drawing- Figure 1 is a, view partly in elevation and partly in section of the device embodying the present invention.

Figure 2 is a vertical section through the device.

Figure 3 is a detail perspective, partly in section, of the cylindrical body.

Figure 4 is a detail section of the check valve.

Referring now more particularly to the drawing it will be seen that the device of the present invention comprises a ball or spherical bodylll which is divided into the two portions l l and I2.

In the center of this spherical body there is formed a cylindrical chamber I3 which extends perpendicular to the opposed flat faces of the two halves of the body and which has one half in each of the body halves. In other words each portion has formed therein and opening through the flat face thereof a circular chamber which when arranged coaxially with the chamber of the adjacent portion forms the complete cylindrical chamber l3.

Within the cylindrical chamber l3 there is fitted a cylindrical body M which has interposed be.-'

tween it and the wall of the chamber, a layer of asbestos l5.

Extending into each end of the cylindrical body l4 through a portion of the length of the body,

is a threaded bore I6 and each of these bores at its inner end is tapered off to form a cone-shaped extension l1. The reduced inner ends of the bore extensions I! are connected by the short longitudinally extending port or passage 18.

. Each, portion of the spherical body H] .has a threaded radial bore [9 which extends from the The mounting stem 20 is-in the form of a nipple which is threaded upon each end and whichhas the nutportion 22 intermediate its end to facilitate its application to the body and to the head of an engine. One of the threaded ends of this stem 20 is inserted into a threaded bore! and intothe adjacent threaded bore it of the body M in the manner shown and a suitable shoulder 23 is provided at the inner end of the threaded portion of the stem, to bear against'the wall of the body I0 so as to draw the adjacent end of the cylinder l4 firmly into position in the cham bar [3.

'I'heother end of the stem 20 is adapted for insertion into the usual spark-plug opening of a motor vehicle or other internal combustion engine cylinder head. I The stem 20 has an axial passage or bore"24, formed therethrough. This bore or passage is of tapered diameter from one end to the other. The opposing conical portions I! of the bores lfi are of different lengths and the body l4 may be turned as desired so as 'to direct either of the bores l6 toward theengine combustion chamber and also the mounting stem 20 may have either of its ends engaged in a bore I6 so as to direct the wide or the narrow end of the bore into the engine cylinder. These different operating positions for the cylinder l4 and for the stem 20 are used for different operating conditions.

The electrode stem 2| has a threaded end adapted to extend through a bore l9 and into and have threaded connection in a bore I6, and this stem 2| is provided with a suitable shoulder 25 for engagement with the wall of the body In so as to draw the adjacent half or portion of the body l and the cylindrical body I4 tightly together. Thus by means of-these stems 20 and 2| it will be seen that the two halves of the spherical body H! are held tightly in assembled relation.

An asbestos gasket 26 is interposed between the two halves of the body |0 whereby, in association with the gasket or lining l5, compression leakage is avoided.

Extending axially through the stem 2| ably insulated therefrom, is the electrode 21 which extends at its inner end beyond the inner end of the, stem 2| in which it is mounted. The inner end of the electrode 21 terminates in laterally directed points 28 and the length of the electrode is such as to bring thesepoints into the adjacent conical portion ll of the bore in which the inner end of the electrode is secured, and into spaced relation with the wall of such conical portion so that a spark will be formed between each of points 28 and the adjacent bore wall.

The outer end of the electrode is suitably formed for the convenient attachment of a current conductor thereto.

, One of the two sections of the body ID has formed therethrough a lateral passage 29 which opens into the chamber I3. Joining or connected with this passage 29 is a lateral passage 30 formed in the cylindrical body I4, which passage 30 opens through the outer side of the body and also opens into the upper or shorter conical portion of the upper bore l6.

In the use of this sparking or firing head device there is provided a suitable receptacle 3| containing oxygen under pressur and from this receptacle a suitable conduit or tube 32 carries the oxygen to the passage 29, in which the other end of the conduit is connected as shown.

Within the passage 29 is a check valve 33 which opens toward the firing chamber which constitutes the aligned bores IS in the cylindrical body 4. By this means oxygen may be admitted into the firing chamber when the pressure therein is lower than the pressure within the oxygen container 3| but when the pressure within the firing chamber exceeds that in the container 3| the valve 33 will prevent such back pressure entering the oxygen container.

As previously stated the mounting stem is designed to be connected with the firing chamber in the cylindrical body l4 to have either the wide or the narrow end of the bore 24 opening into the firing chamber. When the use of gasoline in the engine fuel system is necessary the mounting stem will be connected with the body H as illustrated, that is, with the narrow end of the bore 24 opening into the firing chamber. When any other form of fuel oil is to be used the mounting stem is reversed so that the larger end of the bore 24 opens into the firing or ignition chamber and the smaller end opens into the motor cylinder.

In the use of this device the motor fuel is drawn into the cylinder in the usual manner but there is at the same time introduced into the cylinder and into the double conical firing chamber which constitutes the two conical inner portions of the bores It, a portion of oxygen from th receptacle 3|. As previously stated this oxygen flows into and suit-:

the firing chamber when the pressure therein is below that in the container or receptacle for the oxygen. However when the engine piston is moving upwardly on its compression strokes the pressure within the firing chamber will be raised'above that in the oxygen cylinder and the check valve will close thus preventing any of the fuel being forced back into the oxygen cylinder.

When the device is fired aportion of the fuel charge mixed with oxygen will be ignited in the double conical or hour-glass firing chamber and this will be discharged as a jet from this remainder of the fuel will be ignited. Due to the jetting of the ignited fuel under high pressure into the engine cylinder the flame will be distributed through the cylinder and the fuel charge therein will be smoothly and progressively ignited in the manner most desirable for obtaining the'maximum amount of power from the fuel. At the same time, due to the introduction of additional oxygen the fuel mixture will be completely consumed and there will be no carbon residue either in the firing chamberof the ignition device or in the engine cylinder.

Iclaim:

1. An ignition device comprising a body having an hour-glass shaped ignition chamber, an electrode extending into the upper end of such chamber and having spaced relation with the wall of the latter, amounting stem connected with the lower end of said chamber and having a bore extending longitudinally therethrough and opening into the chamber, and a conduit means for introducing a combustion supporting gas into the ignition chamber.

2. An igniter device as set forth in claim 1, in which said conduit means enters the ignition chamber in the narrowest part thereof.

3. An igniter device comprising a body having a cylindrical chamber therein, said body being divided into'two portions 'on a plane passing transversely through the" cylindrical'chamber, a cylinder body within the cylindrical chamber havingrthreaded bores in the ends thereof, the bores being coimectedby a double cone-shaped ignition chamber, each of the said halves of said body having a bore extending, into the adjacent end of the cylindrical chamber, a shouldered mounting stem extending through one bore-and having one end extended through one of the'last mentioned bores and having threaded engage-' means for introducing oxygen into said ignition chamber,

4. An igniter device as set forth in claim 3 in which said oxygen admitting means comprises a passage leading through the first body and through the cylinder body into the central part of the ignition chamber; and an inwardlyopen ing check valve in said passage. I i

5. An igniter device as set forth in claim 3, in which the passage through said mounting stem is tapered throughout and the mounting stem is adapted to have either of its ends connected in bore leading into the ignition chamber.

- c PERL LEWIS BUCY;