US1534065A

US1534065A - Sparking plug

Info

Publication number: US1534065A
Application number: US575790A
Authority: US
Inventors: Korczynski Ludomir
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-07-18
Filing date: 1922-07-18
Publication date: 1925-04-21
Anticipated expiration: 1942-04-21

Description

-Qaeiree LUDOMR KORCZYNSKI, CRCOW, POLAND.

aereas i',

sraiaiaiiie PLUG..

application aiefii'uiy ia, i922. semina. ermee. i

To all whom t ma concern: Y

Be itknown that LUDOMIR KonczYNsKi,

a citizen of Poland, residing at Cracow,

Poland, have invented certain new and useful .improvements in Sparkin-g Rugs, of

which the following is a specification.

My invention has reference to sparking lugs for the ignition of the gas mixture in explosion engines or internal combusl is the drawback of the sometimes very objectionable manner of securing the spar-,ker to the insulating body, the difficulty of cleaning the parts an-d theviinpossibility of adjusting the relative distance of the electrodes which facilitates the cranking of( the motor.,

A spark plug embodying the feature of iny invention, is shown by way of'example upon the accompanying drawing in longitudinal lsectional yiew.

r1`he outer fitting 2 of ordinary size is provided at its upper portion with the usual six-cornered nut portion 2a for the engagement of a wrench or the like, and at its lower portion it is provided with the threaded portion 2b adapted to be threadedly fitted in the wall of the motor cylinder, and provided at its bottom with the two pr jections 2 between which the electrode 9 is secured, the middle portion 9** of which may, for instance, be of globular shape.

The interior insulation of the sparking plug is provided for' by two socket.

pieces

8 and 15 of porcelain or the like which are secured in the fitting 2 by the threaded annulus 1. At the points of pressure the

usual washers

3, 4i, 5 and 6 of mica, asbestos or the like are provided. In the interior of the socket 15 an interiorly threaded tube 12 is secured by means of a nut 13, a flange 12a being provided at the lower end of the tube 12. By the tightening of the threaded annulusl thesockets of porcelain or the like are only submitted to ressurc strain, but at the exclusion of s caring stress so that there is no danger of bursting of said sockets. The current is admitted in the usual manner, by means of a cable which is screw-threadedly secured between the

nuts

13 and 14.

in the interior of the tube 12 another tube 11 is threadedly secured, atl of which thereJ is a notch 11, driver, and is otherwise somewhat funnelshaped in order to facilitate the pouring in of benzene and the like, if desire-d. The lowerportion of the said tube serves as a guide for the stem 10e of a movable valve electrode 10, the lower end of the tube serving as a valve seat. rlhe electrode 10, the stem 10e of which is of four cornered cross section, in order to provide for the passage of air, is provided with a small reduced portion 10d, and below this part there is the semi-globular valve body proper 10, and the plate shaped enlargement 10".y The lower end 10a of substantially hyperboloidy shape constitutes t-he second electrode.

The mode of operation of the device is as follows: At the beginning of the compression stroke the interior pressure causes the lvalve electrode 10 to bevraised, and the semiglobular Valve body 10 to be forced upon its seat. At the same time the waste gases are forced into the space 7 in the interior of the lower part'of'the sparker and between the semi-globular part 10, and the plate 10b, so that the fresh gas mixture is not thereby interfered with. After the pasthe top for the screwsage of the igniting spark the valve electrode 10 remains in the raised position during the explosion and the exhaust stroke. At the beginning' of the suction stroke the movable electrode drops down by the action of the atmospheric outer pressure, and

"thereby strikes against the contact ball 9,

so that by this means the two electrodes are cleaned from any combustion residues. A t 'the same time the gases compressed in the chamber 7 and subsequently thereof the cooling fresh air passes with great velocity through the narrow annular slot between the outer edge of the plate 10b and the inner wall of the socket 8, thereby preventing the depositing of residues of combustion at these points which would be liable to cause shortcircuiting of the sparking plug.

Upon the now following compression cot stroke the operation is repeated inthe same manner.

The distance of the raised electrode 10L from the lower stationary electrode 9a may be adjusted in a. very simple manner by rotating the tube 11 inwards or outwards by means of a screw driver. This distance is preferably made equal to the distance between the upper ends of the

twotubes

11 and 12, so that the length `of the sparking gap may be seen from the outside.

For the cleaning ot the sparker it is, for instance, suilicicnt, without removing the same from the body ot the motor cylinder to merely pour benzene or the like into the upper funnelof the tube 11. The spari-king plug may also be detached and taken apart in a very simple manner so that any portions whicli have become unfit for use, may be easily exchanged.

Among the many advantages ot' a spark plug according to this invention some of the most important are the automatic and permanent cleaning of the electrodes and of the lower portion ot the inner wall of the insulating body, the possibility of adjusting the length of the spark gap from the outside, the very convenient fastening of the insulating sockets, the possibility ot exchanging the several constituent parts and easily cleaning the same. Various changes and modifications both in the construction as well as in the arrangement of parts will suggest themselves to the expert, so as to adapt the device to varying conditions of application, and l wishV it to be understood that my invention is not restricted to the particular form of construction herein shown and described by way of example, except as specified in the claims, hereunto appended.

I claim:

1. Electric sparking plug comprising a metal shell, an electrode fixed in the lower end of said shell, an outer metal tube axially disposed in said shell and insulated against it,an inner -metaltube within and in contact with said outer metal tube and an axially movable electrode intermediate the lower end of said inner tube and said iixed electrode, a short non-cylindrical shaft on said movable electrode extending into the lower end of said inner tube, a valve body on said movable electrode adjoining' said shaft and adapted to close the lower end of said inner tube and an insulating sleeve i `flower end of said inner tube, a valve body on said movab-le electrode adjoining said shaft and adapted to close the lower end of said inner tube, an insulating sleeve surrounding said movable electrode and a plateshaped enlargement on said movable electrode adjoining said valve body.

3. Electric sparking plug comprising a metal shell, a spherical electrode iixed in the lower end of said shell, an outer metal tube axially disposed in said shell and insulated against it, an inner metal tube within and in contact with said outer metal tube and an axially movable electrode intermediate the lower end of said inner tube and said iixed electrode, a short non-cylindricalshaft on said movable electrode extending into the lower end ot said inner tube, a valve body on said movable electrode adjoining said shaft and adapted to close the lower end of said inner tube and an insulating sleeve surrounding said movable electrode.

in testlmony whereof I aix my signature.

LUDOMIR KGRCZYNSKL