US1492700A - Igniter for gas engines - Google Patents

Description

atented May 6, 1924.

UNITED STATES BENJAMIN P. REMY AND FRANK I. REMY; F INDIANAPOIJIS, INDIANA.

IGNITEIR. FOR Gas ENGINES.

Application filed September so. 1921. Serial No. 504,306.'

b To all whom it may 06mm:

Be it ltnown'that. we, BENJAMIN P. Brent and FRANK I. amt, respectively, citizens of the United States'and residents of Indianapolis, county of Marion and State of Indiana. have invented a certain new and useful I niter for Gas En ines; and we do hereby declare that the following is a full,

, clear. and exact description thercoflreference being bad to the accompanying drawings, in n hichli'ke numerals refer to like parts. v t i This invention relates to a low tension electric igniter of that type adapted for use on internal combustion engines for creating the spark whereby the gas charges will be ignited. The main feature of the invention lies in the bearings of the igniter in which the movable electrode shaft is mounted, and especially a bearing in the igniter block which is provided 'With a reduced bearing surface therein. 'Heretoforefdifiiculty has been had with magnetos ofthis type in the igniter because of carbon forming in the bearings and causing the electrode shaft to stick and become clogged so that no spark would be produced. It has been found that in the use of the ignitcr. the heat and gases from the op eration of the engine causes carbon to accumulate on the heated electrode shaft which is deposited as carbon dust at the inner or hot end of the shaft, which carbon dust is cou'iparatively harmless. Adjacent the carbon dust deposit there will accumulate a deposit of caked carbon on said shaft Which is quite harmful thereto. and adjacent the deposit of caked carbon there will be a deposit of greasy carbon which is also harmful to the operation of the igniter. Toward the outer end of the shaft away from the electrode and igniter block bearing there will be a deposit of rosin-like material which is also harmful to its operation. Said deposits, other than the carbon dust, prevents the free movement of the electrode shaft in that portion of the bearing, wherein such deposits may accumulate.

It is the main object of this invention to provide a bearing in the igniter block for the movable electrode shaft, so formed as to overcome the difliculties arising from such deposits. This is accomplished by reducing the bearing surface of the block and shaft to a minimum and leaving the block and shit ft in spaced relatioh other Where the last three most harmful;depos ts ac cumulate; l p p g The full nature of this invention will be understood from the accompanying draw ings and the following description and claims. I

Fig. 1 is a front elevation ofa magneto mounted in connection With a stationary internal combustion engine. 7 Fi' Q is a section taken on the line '22 of ig. 1, isa plan View looking down on the igniterc In the'drawings there is showri a portion of an internal combustion engine, having a cylinder block 10 mounted on the frame 11 in which the camshaft 12 operates, causing the cam 13 to nevolvc and actuate theengine siderod 14. Bi idly securedto the'side rod. 14 there is a collar 15 upon which is 'pivots ally mounted the actuating arm heldin pe re .tpe y the spira spans 1. The end of the actuating arm; isf in pqsgitipn to engage.a@lug-18 on the operatingmechm nisin which is. transversely; mounted on; the

armature shaft 19 so as to push said lug. and

cause, a partial rotationofsaid mechanism aboutsaid armature shaft Each and of the mechanism. is held in position under spring, tension of the springs 20 which are secured at one end to the frame of the magneto at 21. 95

The ari'nature is carried in the housing 22 secured on the base 23 rigidly mounted on the engine, over which the magnets 24 are mounted. The above described mechanism is old and commonly used in magnetos of this type.

biounted in conjunction with the magneto and rigidly secured in relation thereto there is an igniter block 25 secured in place by the bolts 26, which has drilled therein a hollow sleeve 27, through which an electrode is adapted to extend properly insulated, for connecting the terminal 28 with the igniter 29. the terminal 28 being electrically connected with the armature by the Wire 30 and the igniter 29 being rigid With the block 25. The sleeve 27 carries an arm 31 extending parallel with the hltick 2.5 and provided with a bearing through which the movable electrode shaft 32 extends, supported at the other end in the hearing formed in the block 25. 011 the end of said shaft away from said block there is a tripping lever 34 pinned thereon, and between the block 25 and the arm 31 there is a spiral spring 35, having one end secured to the block 25 and the other end to a co llar 36 whichris pinned on the Shaft attests Pin er. he oiheeeha 0f the shfi t 3? is sfipported ill the bearing portion 38 of the block 25. Rigidly secured on the and of said shaft there is an electrode lever 39 having an igniter point thereon adapted to contact with the poihf of the igniter 29 between which the spark generated passes.

As g eat difficulty has heen had with degios'ils iking on h s sage 32 and i the beirifig o the hide 25, t 'e" shaft is t mid from the shoulder or hearing s iifiice 40 which is rim-owe dowii to a cut five s teeliths (if an inch, r if; other whds the bearing sfirface is raised e p'i-eoiafi jmver the surface of the shaft, the dlameter of said Shah bein apiiif'ecialil larger at the heariii point him through the remainder "011stion df said shaft. A bejveledishoulder 41 formed integral Wit ate start; is eaped to fit snugly in the fveld ,ejarihg fornied in the port n 42 of said block so hs to prevent the exhaust gasesfi'fifii pisssi thiehgh the hearing and dbos itip carh'o therein a; silbstaiiti'al glegi p. The greater ojrtioh of the. hearing 3' menial-gem it 43, ivheia siilistaiitiali nai'ifpwportion 44, cbi ii5- spohding ahead hate haring surfac'e 40 of said shift is reduced in (liaziieter, ivhei-ehy were wili e h s ag men bearing S hface between theheei ihg p n: on 4 1 ha the shoulder in of the shaft. his beggin hontri hi a pe mits fly Efi i o 6 let-t an the bhnh huifah, w i'ch is hari h less, and t e chlie d, Qrea'syfiiid rosin-like iiiati'ial vvi 1 either escape. or term on he non-Bearing pdtiofi of the shaft, father thaii on the contacting bearing surface as has the slicnlder 41 and the lever 39 there is provided a reduced portion 45 which permits of the firhfair fidjilstffieiit arid Wtifiii iii of the beveled surface of the shoulder 41 in the correspo'iid'ing bearing surface of the bean 1. In combination with a magneto and an igniter block therefor, of ah electrode shaft, means for oscillatin said shaft an electrode, a rduced hehrihgi in said lilocli edjsehz the electrcd, adaptedctdslipport the shaft, and a shouldei' on said shaft forming a bearin slit-face adapted to register with said reducea hearing. whereby the remaining surface 0 said shaft will be spaced froin the inner shrface of said block. 7

2. Ari ig iter block having a bearin openiiifj flierethrough, a support space fihm said block, an electrode shaft extending through said opening" 3nd said support, means for oscillating sai shaft anhannulaf bearing portion prc'ecting inwardly from the inner slirface of t w opening in sai block for sup'porting one end of said shaft threw upon a reduced hearihg siirface his to niiaintaih it inspiicel'l relationto the iniie'isxirfac'e thereof, and abearingi' for Said shaft in the support Sijaced from said block for sillfihor ting the opposite end of said shaft, sugst'aiitially e described.

v n 'vl'itiiess whereof, we fifid 0111" signatures.

h when 1 121cm: FEANK 1. REMY.

have hi-euiite af-

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