US1306304A - Gustave x - Google Patents

Description

G.L. HERZ.

SPARK PLUG.

APPLICATION FILED 0CT.25| 1915.y

Patented June 10, 1919.

.eraan-mme.

receso@ To all lwho/ii 'it may C omci'ii:

` va citizen ofthe United States, andresidcnt.-

Be it known thatl, (us'rAvn L.. -l-lniia,

'of the loorough'of ll/Ianhattain'in vthe city and State of New York, have invented a new and useful y `liiiproven'ient in Spark-Plugs,

of which the following is a specification.

The object of my invention is tov providel certain improvements in the construction,

of the sparking electrodes becoming clogged with oil is eliminated; second, the protectionI of theoutwardly projecting portion of between lthe conducting cable and the spark the'insulating bloc-k is '.i1isurcd,.and third, the protectionv of the 'electrical connection plug is insured.

' ,A practical embodiment of my invention -ings, in -ivhich`, Figure 1 is auv oiite'rvendv View of theplug,

- Fig.' 2 is a sideview ofthe plug.

Fig.. 3 is a longitudinal central section vthrough the plug, and Fig. 4 is an inner endview ofthe plug.

The insulator hasn-n enlarged middle portion land' reduced ends 2, 3, forming exiii terior sliouldrs 4, A5: The hollow shell 6 is' "provided with interiorshoulders 7, 8, b etween4 which and the; shoulders 4,5, aretinteiposedgaskets 9`, 10,'for spacing tlie' in` siilator from the inner Walls of the shell;

" insulating coi-o16, against the linner end orf I dii'ctor to the block.

iii

outer end of the `shell Theoiiterend of: the .hood has a. recess 19, the bottom of- Which is substantially-flush with the outer Specification if-Letters Patent.

' portion of the conductor-.i3 and extends vented. A

. A hood .17 of'.'insulating.-material surf ,laitenfied June iid. roi i.

va'ppi'iaiiim nica october 25, 1915." sensi an. amies.

face of the nut lll. exterioranniilai seal;

20 is providedat the outer' end oi. hood. forre'eeivin the annular' @ange 2li of. the 'nougcondueting outer portionoi ao i. the metallic conducting -innerportion El@ i which slides freely along the serevvrvhieaf u'ardly beyoiidthe inneriaee of the nonn vconducting portion 22, into the recess l@ form and `arrangement of the 'several parts v- Afofa spark plug whereby, iirsl', the liabilityy and forms together'with the ilange iii, a cess for receivinw `the annular flange 2li. at

vthe outer end oi; vthe saidhood l?.

.Athunib nut comprising a ii'ietallieiinaer conducting" port-ien 25 `and an outer non# engagement with Vthe outer end'. ofthe conconducting inner portion the can for forcing the cap vinto snug' engagement viii/li the outer end 'of the hood 1f?.-

The electric conducting; cable comprises the usual core 27 and vprotective eovering'id,

which eye surrounds the conductor i3.- The 4screwthreaded portion of the' screw eye is engaged with the core 27 of the electricl conducting cable and the vcoveringn of 'the Vseid cableis inserted betweenv the hood li condi'ictingg portion 26,has a sereviifiireaded '.diictor i8, and lbears, against the ii'ietallie and the cap by cutting away the side Walls i of the hood and nap, as indicatedat 36,31. T he inner end of the shell 6 `foi-'nis one of the sparking `electrodes. In the presentjin'? .stancefthis inner end comprises` a skeletonv disk -11 clamped to the shell, provided with -spirallyarranged.arnis 12' presenting. their ends latw-iseto the opposite sidesof the in-v ner end of the conductor 13 which extends axially t-li'iougli the insulator-,and forms tl.e .oth er spai'kiuibelerfrode.' A iiiit'll--oii-` 'gages the 'screwsthreaded'outer end of the conductor 13- and serves, 4 togifetl-ier with the shoulder 15.' on the said conducto aiidtlie shown at 32. at the cutaway portion 3l, to

pre-vent any danger of the cap l'ieeoiiiii'igl broken at this point when pressurefis ago plied thereto' bythe thumb nui.; j

Froiii-the abovedcsoriptioii'it vi'ill be seen that by iii'ovidingr'spirally arranged arias for the sparking electrode of the shell, the laeeu'in'uhition o foil on the said arms is prelltfwill furthern'iorebe seen that the' pro-- l p vision of the hood materially strengthens which the shoulder bears, to secure the con#v4 the exposed end. of the spark plug; and thi f will the conneeting'end of the conducting cable l' isvery completely andi ed'ectually housed,i not only'the screw eye terminal beingy pro teeted but also the vend. of the covering ,of the cable. 4

ltvvill furthermore be seen that the' cable may lee-ledin any direction from the spar plug by looseningthe thumb nut euiileientljf to periiiittlie rotative movement of hood and its cap, the cable being clamped in any desiredl relative position by simply tighten-' ing the thumb nut to the desired extent.

Any liability of the hood becoming broken vis obviated by the copper or other1 soft metal rimat its inner end and the engagement 'of the non-conducting outer portion of the cap with its outer end. At the same time it will be seen that the'pressure appliedby .the screwing up of the 'thumb nut will be chiefiy against 'he vmetallic conducting elements, thus relieving the non-metall1c or non-conducting elements Vfrom this strain. I

It is' evident that varlous changes may be resorted to vin' the form, constructionr'and arrangement of the. several parts. Without departingfrom the spirit and scope of my invention, and hence I do not Wishto limit myself-strietly to the structure herein set I 1 1. In a spark plug, the shell, insulator and conductor, the inner endl of the shell having spirally arranged arms presenting their ends to the inner end of the conductor. l

2. Ina spark plug, the shell, insulator and conductor, the inner end of the shell having flat spirally arranged arms twisted -f to present .their ends to the inner end of 1 the conductor.

- 3. In a spark plug, the shell, insulator and conductor and askeleton disk ai; the inner end of the shell having spirali; arranged arms presenting their ends to the inner end of the conductor.

v Y 4. -In a spark plug, the shell insulator and conductor 4and a skeleton disk at the inner end of the shell provided lWith flat spirally arranged arms twisted to resent their ends latwi'se tothe inner end o the condzctor.

"7. In a sparkfplug, the' shell, insulator and conductor, a nonfconducting' hoo'd and a non-conducting cap arranged to receive loe tween them the terminalof a. 'conducting cable, and means for clamp' 'g the hood, ters minal andcap in pgsition.

8. In a spark plug, the shell,insulatorl and conductor, a 'non-conducting hood 'and a non-'conducting shaped toY snugly leinat the inner i `clamping the hood,'ca) le an .In testimony, that I claim the foregoing 115 brace the terminalof'a conducting cable, and means for clampingV the hood, terminal and. cap in position;

recess in its outer .end .forreceiving the terminal of a conducting oa-ble,1a non-conduct#I 'ing 4cap for fclosingsaid recessy and means forclamping the hood, terminal and cap in po sition. v j v 10. In a sparkplu'g, the shell, insulator' Vand conductor, a nonfcondueting hood having a recess-1n itsvouter end for recelvmg thei terminal of afconducti'ng cable, 'a non-con'-v ducting cap for closino-'said recess and means for clamping the hoo terminal and cap in' position, said cap and ood being-shaped tosnugly embrace the said cable. 1-

11. In a-'spark plug, vthe shell,"ins'u.lator,

`. conductorand its securing nut, a non-conducting hood and a nonlconducting capv for# receivingbetween them' the terminal rof'a `9. In' va's'park plug, the shell, insulatorand i conductorfa non-conducting hood havinga f i protective Acovering of so A.

conducting cable, andinieanswfpr clamping cap having a metallic conducting inner portion for pressing the terminalagainst said:-v nut. 1

conductor and its securn ducting hoodand a cap or receiving between them the terminal of a conductin cable, a thumb nut for clamping the hoo 12. In a'ispark-plug, the shell, insulator, i nut, a non-con- 4' terminal and cap in position, said cap and thumb nut both having non-conductingouter portions and metallic inner portions.. l

13.- In a spark plug, the shell, inslalor and conductor, anon-conducting hood and a non-conducting cap arrangedv to. receive be-v tween them the terminal and protective cov. ering of .a conducting cable and means for clamping the hood, cable and 'ca 4 together.

14. In -a spark plug, the shell? and conductor,- a 4non-conducting hood, a

insulator cap having' a conducting inner portion and a non-conducting- .outer portion, a nut en- :waging the conductor and located Within the"v ood, the hood andthe nonconducting portion of the cap being arranged to vreceive the protective covering of a conducting" cable and the said-nut and conductingplortio'nfofl the cap being arranged'to receivethe-terminal of said conductin cable and means for (I c 'ap together.'

as-my invention, I have 'signed my name '-'v/this'23rd day of October, 1915,'

' GSTAvn Lf;- HER-z.-

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