US1284054A - Ignition system. - Google Patents

Description

ILW. BRQEGGER. I GNITION SYSTEM'.

APPLICATION FILED APR. 26. 19u. J

Patented Nov. 5,1918

VR W. JBREGGIER, 0F

annum lil'EW JERSEY.,

GNITIQN SYSTEME.

incassa..

apecttlcatton or Lettera Patent. l

Patented lltev, d, irrite,

,application lcd April all, i917. tcrial lilo. leal-,t0n

To all 'w'win t may concern.'

Be it lmown that l, ivan W. Bnoreunn, a

subject of the lfing of ltorway, residing at Newark,4 in the county otEssek and State of ew Jersey, have invented certain new and useful Improvements in ignition Systems, of which the following is a specification.

ln order to get good results trom a battery ignition system for internal combustion engines the primary winding of the induction coil is usually made et' relatively low resistn ance in order to help compensate ior the mechanical lag ot' the circuit breaker and the ot .the coil. also in order to,

electrical lag. give the coil a chance to build up the time of contact is made as large .as possible, that is to say, the cam which operates the circuit. breaker or current interrupteris usually constructed with Hats as long as possible..

-With the parts constructed as above the engine will stop a majority ofthe time in such a position that the circuit breaker contacts will be closed, under which condition a heavy current will How through the primary ot the induction coil and it the ignition switch is not thrown to open position the coil is very apt to be destroyed.

lit is the object of my invention-to provide a 'battery ignition system in which. this trouble is overcome. y Another object is to provide an ignition system which is very simple in its construction and hence one that is cheap to manutacture.

@ther and further objects will be apparent, to one skilled in the art, after a study of the specification in connection with the drawing attached thereto.

.linthe drawing'ldigure l. illustrates diagrammatically oneiorm of my ignition system, while liig. Zillustrates a modication ot Fig. l.

Referring particularly to the `two figures ci the drawing, wherein like numbers reier tocorresponding parte,- l is an engine operated driveshaft carrying a cam 2 that is adapted to operate a movable member 3. A. contact 4 is carried on the arm 5 of movable member 3 while a relatively stationary contact'screw 6 carries a contact? adapted to cooperate with contact i 3- is attached to bracket 8, which in common practice is connected. to the `framework or ground "G. rlhe contact 7 is connected to primary P ot the induction coil li.. 'lhe .i opposite end oi" which adapted to be taken to 'during itsoperation `ing relays, closing relationshipwith contact ll t. Movable member A other end or' the primary l? is connected to a movable member 9 ot relay l0. The contact ll, adapted to cooperate with the movable member 9, is connected to battery B, the is grounded. 'lhe secondary S, ot the induction coil, has one terminal grounded and the other terminal is a distributer for distributing the current impulses to the spark gaps ot the engine cylinders. f The distributer is not shown or described herein as its Jfunctions are old and well known. tu auriliary winding t constitutes ay part of the in duction coil ll, enced by the primary l? for a purpose which will hereinafter be described. 'lheterminals of the winding t are connected to the winding let or relay l0. lin some cases the core l5 oi relay 140 may have a comparatively low resistance short circuited winding 16 there on. ln practice, .when soused, l prefer-to use ay heavy copper tube over the core 15. The current set up in the winding-A by the induction coillt, due tothe action et the primary P thereon when the battery current passes through the breaker contacts a and 7 by the engine, ilows lil oi" relay l0, causing e movable member or is, as is usual in slow actot considerable inertia, in circuit against purpose the conthrough the windin the relay to hold t armature 9, which retractilemember l?, used for the ot-pulling the armature 9 away from n tact ll when the engine becomes stationary.

llt is the hsual practice to' drive the cam at one halt crank shaft speed,so that when `the car is being operated at very low speed ondirect drive the impulses per second, through the primary P of the induction coil l', are relatively low and it' an' ordinary relay were use-din placeo the'one shown the connection between the armature 9 and contact ll would become interrupted and would cause misses in, or interrupt the ignition circuits entirely. vvThe 16 on the relay .l0 serves to make the operar tion' of the armature very sluggish, due to the induced current inv he heavy short circuited winding acting to maintain the nur in the core the current impulses take place through the winding ll, hence the special to maintain the armature @and contact ll in circuit ,closingl position. lln order to close said winding fl. being indu-- relayv l0 serves lll@ use of thecopper shell ica iro

the rimar f circuit for startino1 the engine ll ED t.

. have shown'in Fig. l a special svvitch arm switch arm l2 may also be used Jfor drawing the armature 9 from the stop ll for the pur pose et opening the battery circuit to the primary of ,the induction coil for shutting' down the engine. The exact details relating to these switching features form no part of my inventionand will not be further re ferred to, however, if desired the armature 9 may be drawn to closed position avainst the contact l1 by .means of an additional winding 9 .0 placed on the relay 10, current being applied to the winding 2O by means of a special switch or the switch 19 which is used for applying` current to the starting' motor llll may be utilized, all as shown in Figc 2, reference to which will readily show that While the starting motor is cranking the engine, current also vflows from battery B through the 'Winding Q0 closing the battery circuit through the primary P of the induction coil l, automatically and as soon as the engine begins to rotate under the influence ot the starting motor M or under its own power the' impulses from the primary l? will act on the windinga le as previously described to hold the relay l() in circuit closing; position so that the battery circuit to the in- 'duction coil will be held closed after the starting motor has been stopped by releasing; switch 19.

lt Will also be observed that after the starting motor is stopped by the opening of the switch 19 the Winding 20 of relay l0 is closed trom ground G through the starting motor to the saine ground Gr. lt being understood that Wherever ground is shown it indicates the framework ot the apparatus or car on which it is placed lnasmuch as the armature of the starting motor is of eX- tremely low resistance the effect is a second short circuited Winding on the relay l() which assists the copper shell 16 to make the relay l0 slow in its action of releasing the armature 9, The relay 10 `can be made very small'and inexpensive and it will thus be seen that have provided a very simple Away of taking care of the trouble hcreinbefore referred to. The exact construction of the relay 10, switching means, or induction coil l, or the circuit breaker operated by the engine may be varied over a Wide range and 'l therefore do not Wish to be limited to any particular form of each.

incanta tlfavingr thus described my invention wluit l claim is l. ln an ignition system the combination of an engine operated circuit breaker. an. in duction coil haring' one end o t its primary Winding connected to an eliuncnt ot said cir cuitl breaker, a. relay device having 'its an mature connected to the other end ot said primary winding' and a contact :ulapted to coperate with said relay ar1nalurc und means for connecting' a source ot energy in the prin'mry circuit et said induction coil, said relay being;` held in running: position by current from a whirling` on said induction coil..

2. lin an ignition system the combination oi a circuit breaker, an induction coil having its primary connected iu circuit with said circuit breaker, an auxiliary winding' ou .said induction coil,y a relay fflevicc normally holding the pri-mary circuitl open, inc-ans `tor closing the primary circuit through au clcnient ot the relay device which then adapt ed to be held in operati vc position by cui rent from said auxiliary iviiirliiugg, and u. "source ot current adapted to be connor-.ted

circuit with said primary winding; by said relay device.

3. In an ignition system the combination of a circuit breaker, an induction coil luivinfrgI its primary winding` connected in circuit with said circuit breaker, a source ot current, a. relaydevice adapted to connect said source of current in circuit ivith said primary ivinding and circuit brealvcr, and au uuviliary Winding1 on said induction coil connected to said relay device `)for holding' said relay device in operative position.

ln an ignition system the combination of a circuit breaker, an induction coil having its primary winding;V adapted to be connected in'circuit with said circuit breaker, a source of current, an auxiliary winding? on said iuduction coil, a relay device having a `winding thereon adapted to be connected in circuit with said source ot current tor bifine'iiui` said relay device into ol'lcrative position, und a second winding on said relay device adapted to be connected with said auxiliary winding' for the purpose ot holding .said relay device in opeative position utter said source o't current has been removed from .said first Winding.

5. ln an ignition system for internal conibustion engines having; means 'for crankingr the engine, a circuit breaker operated by thc engine, an induction coil having its primary winding adapted to bc coiu'icctcd in circuit with said circuit breaker, a source of current, an auxiliary Winding on said induction coil, a relay device hayinfr a winding` adapt ed to be connected in circuit will said source et current when said cranking` means is operated whereby said relay device if: put in operative position for .inclriding4 said source lim lltl

of current in circuit with the primary of said induction coil, a second winding on said relay device adapted to be connected in circuit with said auxiliary winding for the purpose ci holding said relay device in operative position after said cranking means has been disconnected from the engine.

6. lln an ignition system the combination of a circuit breaker, an induction coil having its primary winding connected in circuit with said circuit breaker, a source of current, a relay device adapted to connect said source of current in circuit with said primary winding and circuit breaker, an auxiliary winding on said induction coll, a winding on said relay device connected to said auxiliary winding, and a short circuited winding on saidlirelay device for maintaining iiux in the core of said relay device between currentv impulses from said auxiliary winding,

7. ln an ignition system the combination oi a circuit breaker, an induction coil having its primary winding connected in circuit with said circuit breaker, a source of current, a relay device adapted to connect said source of current in circuit with said primary winding and circuit breaker, an auxiliary winding on said relay device connected to said auxiliary winding, and a short circuitedl winding on said relay device formaintaining flux in the core of said relay device when the current impulses from the auxiliary winding are relatively slow.

8. in an ignition system the combination of a circuit breaker, an induction coil having its primary winding connected in circuit with said circuit breaker, a sourceof current, a relay device adapted to connect said source of current in circuit with said primary winding and circuit breaker, an aux lliary Winding on'said .induction coil, a winding on said relay device connected to said auxiliary winding, a heavy short circuited winding on saidvrelay device for maintaining iiux in the core thereof when the current impulsesyfrom the auxiliary winding are slow, and a second winding on said relay device adapted to place the same in operative position.

9. lln an ignition system the combination of a circuit breaker, an induction coil having its primary winding connected in circuit with said circuit breaker, a source of eurrent, a relay device adapted to connectsaid source of current in circuit with said primary winding and circuit breaker, an auxiliary winding on said induction coil, a winding on said relay device connected to said auxiliary winding, a heavy short circuited winding on said relay device for i maintaining flux in the core thereof when the current impulses from the auxiliary winding are slow, and a second winding on said relay device adapted to place the same in operative position, said second winding also serving to assist the heavy short circuited 'winding to maintain liux in the core of the relay device as described.

10. ln an ignition system for internal combustion engines having an electric motor for cranking the engine, a circuit breaker operated by the engine, an induction coil having its primary windingI adapted to be connected in circuit with the circuit breaker, a source of current and a .switch to connect same to the electric motor, a relay haying three windings, one short circuited Within y the relay structure another short circuited through the electric motor but adapted to take current from said source when the starting switch is operated whereby the relay acts to close the source of current through the said primary winding, a winding on the induction coil connected to the third winding of the relay for holdinor it in operative position, said winding serving to maintain the dux in the relay core when the current impulses from the induction coil are a minimum.

ll. lin an ignition system the combination l of a circuit breaker, a source of current, an induction coil having primaryand secondary windings, means for closing a circuit from the sourceof current through the said primary winding and circuit breaker and means associated With the induction coil and the iirst mentioned means for maintaining the primary circuit closed during normal operation oi.l the circuit breaker, said means also acting to open the primary circuit whenv the circuit ceases operation.

- 12. lin an ignition system, a source of electric current, a main circuit including a current interrupter, and the primary of an induction coil, a relay for controlling circuit connections between the current source and main circuit, said relay in operative position being under the control of the current impulses in the main circuit.

13. In an ignition system for internal combustion engines, a main circuit including the primary of an induction coil and a source of electric current, a relay having -a contact in said main clrcuit, an mterrupter adapted to be operated by the engine, means :for closing 'said contact and means controlled by said interrupter for maintaining lsaid contact continually closed while the engine is in operation.

In witness whereof ll allix my signature.

IVAR `W. BROEGGER.

short circuited

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