US1178067A - Electrical ignition system. - Google Patents

Description

E. ASSMANN. ELECTRICAL IGNITION SYSTEM. 'APPLICATIQN FILED `ocT.3o. ma.

1,178,067. Patnd Apr. 4, 1916.

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E. GASSMANN.

ELECTRICAL IGNITION SYSTEM.

APPLICATION FILED 0CT.30I 1913.

Patented Apr. 4, 1916.

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' Ignition lSTATES PATENT OFFICE.

EUGENE eAssnNN, or InooxLYN, NEW Yonx, .assIGNon T o` EISEMANN IIAeNrzToA co., or NEW Yoan, N. Y., A coRPonATIoN or NEW Yonx.

ELncTnIcAI. IGNITION SYSTEM.

Y Specification of Letters Patent.

Patented pr. 4, 1916.

Application led'october 30, 1913. Serial No. 798,266.

'citizen 'of Germany, and a residentV of the borough of Brooklyn, county' of Kings, and

- State of New York, have invented a certain new and useful Improvement in ElectricalA Systems for Internal-Combustion Engines, of which the following is a full, clear, and exact specication.

This invention relates to ignition systems for internal combustion-engines, its 'object is to provide means for producing a strong, voluminous ignition spark, to insure ignition .also at such times when the magneto is run at a low speedfor instance-when the engineis being started by cranking, or

a self-starter, or when otherwise only a weak primary current is available; andthe invention consists in the hereinafter specified improvement in the construction of such igniting devices, whereby an intensifying ofthe current is effected, producing, in the induction coil, a high tension current of sufficient volume to produce under such conditions an intense, voluminous spark in the cylinder ofthe engine.

The construction and arrangement of this improvement,which is applicable to electric ignition devices having a xed, or a rotating armature, and to single or double ignition systems, is illustrated in the accompanying drawings, whereinu Figure 1 is a diagram showing the arrangement and connections of the parts of Ydiagram showing the arrangement and con a double ignition system, wherein the winding of the armature is stationary; Fig. Qis a nections of the parts of a double ignition system, according to my invention, wherein the armature is rotated; Figs.V 3 and 4 are diagrams of ignition systems arranged similarly, as shown in Figs. 1 and 2 respectively,

but showing also thel arrangement and connections of a commutator in su'ch ignition systems devised according to my invention.

` Fig. 5 is an end view, or front elevation, of

the commutator disk. Y,

Referring to Fig. 1, showing the arrangement of the parts and their connections for double ignition systems, whereinthe winding of the `armature is stationary, A represents the core, P the primary and S the secondary coil of the armature winding of the magneto; B the battery; I a mechanically operated circuit breaker, m beingits stationary and n its movable arm; C represents a condenser; c and c being its connections in the circuit, parallel to the circuit breaker I; o and o are wires of the magneto circuit to and withl the circuit breaker I, the wire o connecting at p with the armature winding of the magneto; b, b and b2 are wires'of the battery circuit, connecting at p with the `primary coil of the armature winding; D

designates a switch for connecting, and for cutting out, the battery; t and t are the sparker terminals, the latter being also the l terminal of the secondary armature winding S of the magneto; G is the mass, and glthe groundingl connecting therewith. In this arrangement, it will be noted, the armature winding of the alternating current generator A is connected with the constant current source, the battery B, vand consequently, when the arm o switch Dis shifted to connect the points d and d2 in the battery cir-V cuit, and the contacts of the interrupter I closed, the current from the batteryB will y How through wire b', switch D and wire b2 into the primary coil P, wherewith wireb2 connects at p, and through it to wire o', connected to the other terminal of the primary coilat p', from there through the contact arms n and m and wire 'v' to the magneto and through wire b back to the battery. This battery current reinforces and augments whatever current there may be produced by the magneto, while it is operated at a low speed, as for instance, on the starting of the engine, or whenever the engine is run at a low speed. The confluence of the.

electric currents from both sources, whenever the battery current is turned on, results in producing, when the primary circuit is interrupted, a strong, or rather impulsive, flow of induced current, of high intensity andvolume, in the secondary coil, P of the magneto, and the discharge of an intense and voluminous spark at the terminal tf, and thus 'insures the safe ignition of the charge, irrespective of the speed at which the alternating current generator may then be run. V

The battery current may be cut oif by shifting switch D to the position connecting points d and d2 as shown inthe drawings, whereupon the magneto alone operates to produce the ignition, its low tension current the secondary, induction coil S, to the swi :h D, and wire b2, i'nto theprimary coil P; the high tension current flows through sparker terminal -t whenever the circuit of the primary current is interrupted.

Besides effecting the above stated `object `of my invention, this improvement simplifies and ,cheapens .the construction of such double ignitionr system, by dispensing with theinductioncoil in the battery circuit and its attendantlapparatus and connections, and yet permitsthe employment of the battery ignition, in casel of a break down of the magyLneto, with equal facility and effect, the secv,ondary magneto winding serving then as the induction coil for the battery ignition.

` The diagram Fig. 3, illustrates the arrangement and connections of the parts of arrr ignition device, in which the armature ,Fig 4l, but combined with a commutator.

.winding is stationary, the same as shown in Its corresponding parts and wiring connec- Wtionsv are designated by the same reference letters and .numerals as in Fig. 1. The commutatorlis composed of two disks, designated respectively H and H, which are staticnary, the lcarbon brushes f, holder N, formed in the shape yof cog-wheel, rotatably mounted on ystud L, and. which may be driven by a transmission from the engine shaft, and their connecting conduits. Disks stationary armature of the alternating cur.

- L. The carbon brushes f are set in insulat- Lingbushings It in the rotating brush holder Nin positions to traverse the annular fields of the commutator disks, and are yieldingly pressed against the disks by metallic springs Segment J of disk H is connected by wire b2,with the primary winding P of the rent generatoryandthe corresponding segmenty J of the diskH is connected by the f wire b?, through switch D and wire b, to one ypole of the battery B; the other pole of the battery isvgrounded by wire b, terminating 1n the mass of disk H. Thus when switch D `isin 'the position, indicated in' full line in F 3, the battery .current will How through 'wire` 6,switch D, wire b2, segment J', carbonbrushes f, segment J and wire b2 into theprimary winding P of the armature. By shiftingvtheswitch D to point cl3, the position .indicafte'din.l dotted lines, the battery is cutout, and by shifting the switch D from point to point o', wires and fv, the electrlcal connectlop from 'segment' J to the anchor of the magneto A, are connected, and the magneto circuit closed. The operations ofthe ignition device constructed as shown in Fig. 3, take place in the same way as eX- plained with reference to Fig. 1, the arrangement and connections of the other elements being the same.

In the arrangement, illustrated in diagrams Fig. 2 and 4, which are devised for an ignition apparatus, having a rotating armature, a third coil T is provided, Whose terminals are connected one'to the primary coil P, and the other to the secondary coil S lof the armature. The wiring connections. are made as follows: The wire b2 of the battery circuit is connected at s to the joined terminals of the secondary armature winding S and of the coil T,`- and the Wire w `to the joined terminals at p of the coil T, and of the primary armature winding P, Whose other terminal is connected to the rotating core of the magneto. All other parts and wires are connected in the same way as those of the system illustrated'in Fig. l, except that no connection is made between the switch point d, and the wire b of the battery circuit.

When the switch D is shifted, to close the battery circuit, as, for instance, at the starting of the engine, and the contact points of the interrupter I are closed, thebatterycurrent flows through wire b, switch D, wire b2, the coilT, wire 11 the levers n and m and wire v to the magneto, and through Wire b4 to the battery as there is practically no resistance tothe flow of the current at I and there is resistance to its passage through the winding P. This current is augmented by whatever current is produced by the magneto, and is flowing through the primary winding P ofits armature. When the `primary circuit is interrupted, by' the separatingy of the contacts m and n, the flow of the battery current through wire o is stopped, and its flow through the winding P being resisted, the high tension ofthe current induced in the secondary winding S of the armat-ure and flowing to the terminal t', where the spark is discharged, is thereby increased. It results in no detriment in the functioning of the ignition device that the circuit through battery is closed continuously, as long asthe switch D is closed, because the battery current always acts in support ofor'suppleinentsfthe action of the magneto current, the system being devised toy operate either with the battery and magneto current combined, or with the magneto alone. When the b attery B is cut out, by shifting the switch D to the point d, the magneto operates the ignition in the same way as in any other single or double ignition system, the

coil T functioning then as a part of the secondary armature winding S, whereby the high tension current, induced therein, when v Y nected bythe wire b2 to the joined terminals the primary circuit is interrupted, is corre spondingly intensified. Y

The adding, in thev arrangements shown diagrammatically in Figs. 2 and 4, of the 'third coil T on -the armature of the magneto, and the connecting of it to the primary, and also to the secondary winding of the arma,- -ture, and to the battery and magneto circuits, as described, also prevents all loss of current in the transmission from the Contact ring to the brush, which otherwise must be provided in every apparatus in the magneto and in the battery circuit as well. l In the arrangement illustrated in Fig. 4, the one commutator disk H, is secured to and rotates with, the armature of the magneto and the wiring connections are correspondingly simplified in the arrangement A shown in Fig. 4. In this arrangement the segment J of the commutator disk H is conof the coil T, and of the secondary armature winding S, at s and the brushes f and f are connected, one by the wire b, and the other by wire b2, through switch D and wire b', with the poles of the battery B. The connecting, and the cutting out, of the battery is effected by `shitting the switch D, as "eX- plained with reference to the diagram Fig. 2. When switch D is set to close the battery circuit and the contact points of the circuit breaker I are closed, the battery current iiows during the periods when brush f contacts with the segment J of the disk H,

through the coil Ty and wire i1', etc., and thesame effect is produced by the cooperation of the co-acting elements of the system, as explained with reference to the diagram in Fig. 2. When the battery B is cut out, the device operates as a single and in case of a break inthe operation of a magneto. the device may be operated as a single (battery) ignition acting in both cases the same way explained above. p

I claim as my invention:

1. An electrical ignition system for internal combustion engines comprising an alter.

nating current generator,-` a primary circuit, an interrupter in the primary-circuiha high tension circuit and a sparking device connected therein; a coil on the armature of the generator connected with the terminals of the primary and of the secondary armature windings of the generator; a battery; an electrical conduit from the battery connecting with the joined terminals of the 1 coil and of the secondary armature winding of the-generator; a switch in the conduit; and an electrical conduit completing the battery circuit: substantially as herein shown and described.

2. An e1ectrical 'ignition system for internal combustion engines comprising an alterx a primary circuit,

natinglcurrent generator high aninterrupter in the primary circuit, a

tension circuit and a sparking device connected therein; and an intermediate coil between the primary and the secondary windings of the' alternating current generator,

and connecting therewith; a commutator electrically connected with the primary armature winding of the generator; a battery;

electrical conduits from the poles of the battery to the commutator; .a switch therein and an electrical conduit from the cut out terminal of the switch to the alternating current generator, substantially as herein shown and described.

3. An electrical ignition system for 'internal combustion engines comprising an alternating current generator, al primary circuit, aninterrupter in the primary circuit,

a high tension circuit and a sparkingdeofthe battery to the-commutator; and a switch in the conduit from the battery to the commutator, substantially as herein` shown and described.

4. The combination in an electrical igni-V tion'lsystem for internal combustion engines comprising an alternating current generator, a primary circuit, an interrup'ter in the pri,- mary circuit, a high tension )circuit and a sparking device connected therein; of an intermediate coil between the primary and the secondary Vwindings of the alternating current generator and connecting therewith; an independent source of electrical current;

a coinmutator, an` electrical conduit connect ing it with the' terminalofthe primary armature winding of the alternating current generator, the independent source of electric current-to and from the commutator; a switch therein and an electrical conduit from the cut out terminal of-l the switchto the alternating current generator, substantially as herein g shown and described.l f l5-. The combination in an electrical ignition system for internal lcombustion engines comprising an alternating current generator,

a primary circuit, an interrupter in the primary circuit, a high tension circuit vand a sparking device connected therein; ofA a coil having its terminals joined with the terminals of the primary and of the vsecondary armature windings of the alternating cur.- rent generator, an-` independent source of .electrical current. a' conduit therefrom con-- necting it 'withthe' joined terminals ofthe coil and of the secondary armature lwinding of the generator; a switch i'n the conduit,

electricalconduits from and to and an .electrical conduit completing the cirnrfctininleners Patent No'. 1,178,067. c

cuit of the independent source of electrical current7 substantially as herein shown and described.

6. The combination in an electrical ignition system for 'internal combustion engines comprising an alternating current generator, a. primary circuit, an interrupter in the primary circuit, a high tension circuit and a -sparkingldevice connected therein; of a coil having its terminals joined With the terminals of the primary and of the secondary armature windings of the alternating current generator, a commutator electrically case .the Patent ice.

. [amiral` v l'eadwith` this correction therein that the signed @deemed this @ai day'o-f May, E'.K D., 191e.` t

EUGENE GASSMANN.

f Witnesses R. A. PIPER, VERONICA BRAUN.

l It is hereby@erarialiv that in Letters Patent' No. 1,1782067, 'granted April'li, v 1916, upon the application of Eugene Grassmann,i of Y Brooklyn, New York, for an improvementuin Electrical Ignition Systems, an error appears in the printed y speciiicationrequiring correction as, follows: Page 3, lines 40u-43; strike out the -words and incase of a break inl the` operation of ax magneto, the device may be operated 4as a vsingle (battery) ,ignition acting in botli cases the 4same Way and v insert the Words (magneto) ignition; andtht the said Letters Patent should be I s'ame may conform to the record of the EF. WHrrEHEAD, gliding. 'qfPatenta 'I

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