US2195953A

US2195953A - Spark plug

Info

Publication number: US2195953A
Application number: US292704A
Authority: US
Inventors: Ceccon Joe
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-08-30
Filing date: 1939-08-30
Publication date: 1940-04-02
Anticipated expiration: 1957-04-02

Description

J. CECCON April 2, 1940.

SPARK PLUG Filed Aug. 30, 1939 2 Sheets-Sheet 1 w 0 c y. C

- Aprilz, 1940; I 7.1. CECCON 2,195,953

S PARK PLUG Filed Aug. 30. 1959 2 Sheets-Sheet 2 Patented Apr. 2, 1940 This invention relates to improvements in spark plugs and more particularly to that type of spark plug wherein the electrodes in the same are ad- .iustable.

An object of the invention is to provide a spark plug wherein the spark gap may be ad J'usted.

- Another object of the invention is to provide a spark plug .wherein the spark gap may be' adjusted while the spark plug is mounted in an internal combustion engine or other device.

Allof the foregoing and still further objects and advantages of the invention will become apparent from a study of' the following specification, taken in connection with the accompanyingdrawings, wherein like characters of reference designate corresponding. parts throughout the several views, and wherein:

Figure 1 is an elevational view of a device embodying my invention.

Fig. 2 is a vertical transverse sectional view of the invention. Fig. 3 is' an holder.

Fig. 4 is a transverse sectional'view taken substantially on the line 4-4 of Fig. 3. Fig. 5 is a top plan view of the device with-th terminal cap removed.

- Fig. 6 is a transverse sectional view taken substantially on the line 6-6 of Fig. 2, and

Fig. 7 is an elevational view of the adjustable electrode.

Referringnow to the drawings, in detail, it will be seen that the reference numeral l0 designates the usual housing nut provided with a threaded tubular shank -II for securing the same in an internal combustion engine (not shown). The shank I I has secured to and extending from the bottom edge thereof, an L-shaped electrode- Mounted in the housing nut l0 and sealed therein by gaskets I3 and I4, is a dielectric elec-' trode holder l5 having a. smooth b reJG which enlarges to form a pocket I}. The top portion of the dielectric electrode holder has anchored therein a metallic member 18 of tubular construction wherein the bore thereof is threaded as at I9. This tubular metallic member 18 is provided at its top end portion with threads 20 and a flange 2| while its bottom end portion has formed in the 'side surfaces thereof pockets 22. This pocketed portion has a baked porcelain coating.

elevational view of one electrode 2,195.95: smax ewe Y n Ceceon. Moran', Iowa Application August .30; 1939', Serial mnzazaoi 2 Claims. (Ol..123169) just'edposition.

23 and I2 may be varied.

adjustment is made.

Although I have shown a threaded .bore I3. I A kerf 25 is cut in the top end of the electrode 23 forengagement with a screw driver or otherlmanipulating tool when an adjustment of the electrode is to be made. After adjustment a lock nut 26 is threaded on the I electrode 23 to securely hold the same in ad- A conductor terminal in the form of an' internally threaded cap 21 having a headed post 28 pro-'- jecting therefrom-is screwed onto the threads 20 of the tubular member IE to cover the top end of the electrode 23. A gasket 29 is mounted between the bottom end of the cap 21 and the flange 2!.

When the spark gap between the bottom end of the electrode 23 and L-shaped electrode l2 becomes so great as to diminish the efliciency of the spark plug or to render it inoperative, it isunnecessary to remove the plug fromthe engine or other. device in order to. reset the electrode.

The cap 21 is removed, the lock nut 26 unscrewed, and by screwing .the electrode 23in or out of the member It the distance between the electrodes The pocket I! is provided receive the enlarged portion 24 of the electrode 23 when an nd describedherein a preferred embodiment of my invention, it is to be definitely understood that. I do. not desire to limit the application of the invention thereto, and any change or changes may be made'in the materials andin the structure and arrangement as claimed.

What is claimed is:

of electric current.

of,the parts. within the spirit of the invention '1. In a device of the; character described, a spark plug including a. housing nut member, an electrode mounted on said housing nut 'member, a dielectric member having a small bore and a counterbore m'ounted'in said housing nut member, an electric conducting member mounted in v and anchored to the walls of'said counterbore, an electrode adjustably mounted in said electric conducting member and extending through said small bore at one end portion and extendingbeyond said electric conducting member at its other end portion, a cap mounted on said electric conducting member and over -'said electrode, and apost on saidcap for connection with a source ducting member at its other end portion, a cap mounted on said electric conducting member and over said extending electrode portion, and a post on said cap for connection with a. source of electric current.

JOE CECCON.