Title:
Spark plug
United States Patent 2008617
Abstract:
This invention relates to spark plugs for in ternal combustion engines and similar devices an has for the primary object the provision of device of this character wherein the electrics spark thereof may be materially increased to ex tend over a greater area and in annular formatioi which will...


Inventors:
Ivan, Lampitt
Application Number:
US74281934A
Publication Date:
07/16/1935
Filing Date:
09/05/1934
Assignee:
Edwin, Mrs. Lampitt A.
Primary Class:
Other Classes:
313/138, 313/157
International Classes:
H01T13/40
View Patent Images:
Description:

This invention relates to spark plugs for in ternal combustion engines and similar devices an has for the primary object the provision of device of this character wherein the electrics spark thereof may be materially increased to ex tend over a greater area and in annular formatioi which will cause thorough and complete burning of the fuel in the engine and eliminate the cus tomary practice of employing dual ignition sys tems and spark plugs to the engine.

With these and other objects in view this invention consists in certain novel features of construction, combination and arrangement o: parts to be hereinafter more fully described anc claimed.

For a complete understanding of my invention reference is to be had to the following description and accompanying drawing, in which Fig. 1 is a side elevation, partly in section, illustrating a spark plug constructed in accordance with my invention.

Figure 2 is a top plan view illustrating the same.

Figure 3 is a side elevation, partly in section, illustrating a modified form of my invention.

Figure 4 is a top plan view illustrating the same.

Figure 5 is a plan view, partly in section, illustrating an electrode plate.

Referring in detail to the drawing, the numeral I indicates a metallic body constructed similarly to the body of a conventional type of spark plug and has mounted therein the insulator 2, carrying the central electrode 3. A metallic externally screw threaded sleeve 4 is connected to the end of the body I by a non-magnetic sleeve 5 and is spaced from the end of the body I to form an annular groove 6. A perforated electrode plate 7 forms an integral part of the electrode 3 and is arranged within the annular groove having its periphery spaced from the walls of said groove to form a spark gap of annular formation. The sleeve 4 projects outwardly of the non-magnetic sleeve 5 and provides a medium for attaching the spark plug to an engine in the usual manner.

An electro-magnet 8 is arranged adjacent the body I and the terminal posts 9 thereof are adapted to be connected into an electric circuit.

The core of the electromagnet is in the form of sectional clamps 10, one of which is applied to the sleeve 4 and insulated from the non-magnetic sleeve 5 while the other is applied to the body, as shown in Figure 1. The split clamps form the north and south poles to the electro-magnet so that during the use of a spark plug or when n possible to obtain from a spark plug of a cong ventional construction. The increased spark - will more effectively ignite and burn the fuel in - the cylinder of the engine. The spark or arc is compelled to pass through the magnetic field 10 - of the electro-magnet 8 which has a tendency to -suck the spark across the gap defined by the f plate 7 and the walls of the annular groove.

S Referring to my modified form of invention, the body of the spark plug is indicated by the char- 15 ,acter II and its threaded portion has threaded thereto a non-magnetic sleeve 12 and threaded to the sleeve 12 is a metallic shell 13 spaced from the body I1 and is provided at one end with an inwardly extending annular flange 14. The insu- 20 lator of the body I is indicated by the character 15 and carries the central electrode 16 to which is secured an annular cup-shaped plate 17, the flange of which is spaced from the flange 14 forming a spark gap of annular formation. The 25 plates 17 and 7 are perforated to equalize pressure on opposite sides thereof.

A series of electromagnets 18 are associated with the body and the shell 13 and are connected in an electric circuit in any suitable manner. 30 The cores of the electromagnets are of substantially U-shape and are indicated by the character 18'. The ends of the cores are secured in sockets formed in the body II and the shell 13. 35 The spark produced at the spark gap is compelled to pass through the magnetic field of the electromagnets 18.

Having described the invention, I claim: 1. A spark plug comprising a metallic body, an 40 insulator carried by said body, a central electrode carried by said insulator, a metallic sleeve secured to and spaced from the body to form an annular groove, a circular electrode plate integral with said electrode and arranged in said 45 groove to form an annular spark gap, and electro-magnetic means between said sleeve and body and connected in an electric circuit for spreading and increasing the area covered by the spark between the walls of said groove and the 50 plate.

2. A spark plug comprising a metallic body, an insulator carried by said body, an electrode carried by the insulator, a metallic element detachably secured to the body and spaced therefrom, 55 a circular plate carried by the electrode and cooperating with the body and metallic element in forming an annular spark gap, and electro-magnetic means connected to the body and to the metallic element.

3. A spark plug comprising a metallic body, an insulator carried by said body, an electrode carried by the insulator, a metallic element detachably secured to the body and spaced therefrom, a circular plate carried by the electrode and cooperating with the body and metallic element in forming an annular spark gap, an electro-magnet arranged adjacent the body and including a core having sectional end portions applied to the metallic element and to said body.

4. A spark plug comprising a metallic body, an insulator carried by said body, an electrode carried by the insulator, a metallic element detachably secured to the body and spaced therefrom, a circular plate carried by the electrode and cooperating with the body and metallic element in forming an annular spark gap, a series of electro-magnets each including a winding and a core with the ends of said core secured to the body and the metallic element.

IVAN LAMPITT.