US1338625A

US1338625A - Ignition device

Info

Publication number: US1338625A
Application number: US235441A
Authority: US
Inventors: Alfred H Hoadley
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-05-20
Filing date: 1918-05-20
Publication date: 1920-04-27
Anticipated expiration: 1937-04-27

Description

A. H. HOADLEY.

IGNLTIGN DEVICE.-

APPumoN msn um zo. 191s.

WA4/f,

mvudofo Azffedwadf ALFRED HXHOAIQLEY, F NEW YORK, N, Y.

GNTEN DEVCE.

Specification of Letters Eateiit.

Patented Apr. 27, 1920. v

Application filed May 20, 1218. Serial No. 235,441.

To all whom t may Concern Be it known that I, ALFRED H. HoinLiaY,

citizen of the United States, residing at New York, in the county of New York and State otNew York, have invented new and 'usefullmprovements 'in Ignition Devices, of which the following is a specification.

LThis invention relates to ignition devices Avand has for its' primary object the provision of a plurality of'electrodes in which spark gaps of varying lengths will be constantly produced therebetween and a. multiplicity.

of sparking pointsv provided whereby 'to enable the device to properly .accommodate itself in substantially an automatic manner j to varying conditions of an internal conibustion enginel at all times.

Another object of the invention relates to an improvement in electric ignition ldevices in which, through an arrangement of the several parts ofthe device, the liabilityvof mis-liring is materially reduced and in which the electrodes can beA adjusted relatively to vary the distance therebetween to suit all given or known requirements.

Another object of the invention resides in the provision of an ignition device in which the principal parts thereof will be of stock formation, capable `of being readily assembled-at a minimum cost, while producing a device of ahighly practical nature, and one which will be positive of action.

With the 'above and other objects in view which will appear as the nature of the invention is4 better understood, the same consists in the improved construction and novel arrangements of parts which will hereinafter be fully described and particularly pointed out in the claims.

In the accompanying drawings, has been illustrated,a single and preferred toi-in ci the invention, it being, however, understood that no limitations are necessarily made to the precise structural .details therein exhibited, but that changes, alterations and inodiications within the scope 0i' the claims may be resorted to when desired.

Figure 1 is a side view of my improved ignition device.

Fig. 2 is a vertical section therethrough.

Fig. 3 is a section taken en line' 3--3 oi" Fig. 1.

Fig. i is a section taken en line --t of Fig. 1, looking in the direction ci the arrows.

Through the bore 7 passes an insulator 10 which may be constructed of anyv 'suitable well known material. It is providedwith a bore 11 and a chamber 12, the latter being` in communication with the bore as shown in Fig. 2. The said insulator isprovided with a reduced upper portion 13 and` a similar reduced lower portionv 14, which are spaced apart by the intermediate e larged section y15 of said' insulator. 1n this

manner shoulders

16 and 17 are formed upon the insulator and associated therewith are circular metallic packing rings 18. y A bushing 19 is removably connected with the upper. reduced portion 13 of the insulator and as illustrated, the thread 20 of said bushingis received by the thread 9 of the hase 6, whereby it may bebrought. with pressure `against the packing gasket 18.

electrode 21 is provided with depending arms 23 which are spaced apart to produce openings 24: at the sides of said electrode. These' arms are connected together by an integral flat disk 25 which is arranged right angles to the longitudinal axis of the device.

rThe second electrode is in the form oi" a stem 26 which is received by the bore 11 of the insulator. It is threaded at its upper end at 27 and at its lower end at 2 8, the former thread being projected above the portion 13 of the insulator where it is connected with a set nut 29 and a mating jam nut 30 whereby when once a desired adjustment of the electrode has been obtained, it may be iXedly maintained in such position. In addition thereto, the said jam nut and the set nut are arranged for connection in an elementl is 'a spring j37 which bears against ordinary electric circuit as will be understood. This Aelectrode extends through the chamber 12 and within the chamber it is provided with an integral collar 31 and an asbestos washer 31 which is adapted to contact with a shoulder 32 at the upper end of vthe-mentioned chamber 12 .to establish a seated connection. A

Thel thread 2S of the electrode 26 is re'- ceived in the l'socket 33 of a` sparkling element 34, the same having a head 35 of circular' formationv which is eonvexed and larranged to `oppose the flat face of the 'disk 25 of the mating electrode 21. i In this manner it will be evident that a multiplicity of sparking points is provided, while at the 'substantially elastic manner to varying con- I ditions of internal combustion engines. The two electrodes may be adjusted with 'respect to'eaoh other in order that the gap'there-- between can befvaried at the will of the operator. The sparking elementy 34: can be adjusted on the thread 28 to suit var ing conditions. In the Asocket, of the spar g the lower end of the stern 26 t0 hold said element in its adjusted position.

lVhat is claimed as new is 1. A spark plug comprising a base, an insulator extending through said base, an electrode .connected with said base and extending across the lower end thereof, fa

second. electrode extending through said insulator and having its end toward smid' first named electrode threaded, and a sparking member threaded upon said second named electrode vand adjustable thereon whereby the distance between said sparking member and said first 'named electrode may be varied, thelower end of said sparking member being closed and convex.

2. A spark plug comprising a base, an insulator extending through said base, an electrode connected with the lower end of said base vand having a portion lextending transversely with'respect to the axis of the plug, a second. electrode extending through said'insulaton a sparkling member having an internally;threaded bore engaging upon the end of said second named electrode, andspring disposed within said bore and bearing e against the end wall thereof and against the end -of said second named elecltrede, said sparkingv member being adjust- "able longitudinally of said second named electrode whereb to varythe length ofthe .gap between sai sparking member and the4 transverse portion of said first named elec- In testimony whereof I ax my si nature.

ALFRED H. HoAD EY.